platform/kernel/linux-rpi.git
3 years agousb: gadget: u_audio: add real feedback implementation
Ruslan Bilovol [Thu, 3 Jun 2021 22:01:04 +0000 (00:01 +0200)]
usb: gadget: u_audio: add real feedback implementation

This adds interface between userspace and feedback endpoint to report real
feedback frequency to the Host.

Current implementation adds new userspace interface ALSA mixer control
"Capture Pitch 1000000" (similar to aloop driver's "PCM Rate Shift 100000"
mixer control)

Value in PPM is chosen to have correction value agnostic of the actual HW
rate, which the application is not necessarily dealing with, while still
retaining a good enough precision to allow smooth clock correction on the
playback side, if necessary.

Similar to sound/usb/endpoint.c, a slow down is allowed up to 25%. This
has no impact on the required bandwidth. Speedup correction has an impact
on the bandwidth reserved for the isochronous endpoint. The default
allowed speedup is 500ppm. This seems to be more than enough but, if
necessary, this is configurable through a module parameter. The reserved
bandwidth is rounded up to the next packet size.

Usage of this new control is easy to implement in existing userspace tools
like alsaloop from alsa-utils.

Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20210603220104.1216001-4-jbrunet@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: gadget: f_uac2: add adaptive sync support for capture
Ruslan Bilovol [Thu, 3 Jun 2021 22:01:03 +0000 (00:01 +0200)]
usb: gadget: f_uac2: add adaptive sync support for capture

Current f_uac2 USB OUT (aka 'capture') synchronization
implements 'ASYNC' scenario which means USB Gadget has
it's own freerunning clock and can update Host about
real clock frequency through feedback endpoint so Host
can align number of samples sent to the USB gadget to
prevent overruns/underruns

In case if Gadget can has no it's internal clock and
can consume audio samples at any rate (for example,
on the Gadget side someone records audio directly to
a file, or audio samples are played through an
external DAC as soon as they arrive), UAC2 spec
suggests 'ADAPTIVE' synchronization type.

Change UAC2 driver to make it configurable through
additional 'c_sync' configfs file.

Default remains 'asynchronous' with possibility to
switch it to 'adaptive'

Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20210603220104.1216001-3-jbrunet@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: gadget: f_uac2/u_audio: add feedback endpoint support
Ruslan Bilovol [Thu, 3 Jun 2021 22:01:02 +0000 (00:01 +0200)]
usb: gadget: f_uac2/u_audio: add feedback endpoint support

As per USB and UAC2 specs, asynchronous audio sink endpoint
requires explicit synchronization mechanism (Isochronous
Feedback Endpoint)

Implement feedback companion endpoint for ISO OUT endpoint

This patch adds all required infrastructure and USB requests
handling for feedback endpoint. Syncrhonization itself is
still dummy (feedback ep always reports 'nomimal frequency'
 e.g. no adjustement is needed). This satisfies hosts that
require feedback endpoint (like Win10) and poll it periodically

Actual synchronization mechanism should be implemented
separately

Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20210603220104.1216001-2-jbrunet@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc2: Don't reset the core after setting turnaround time
Clément Lassieur [Thu, 3 Jun 2021 15:59:21 +0000 (17:59 +0200)]
usb: dwc2: Don't reset the core after setting turnaround time

Every time the hub signals a reset while we (device) are hsotg->connected,
dwc2_hsotg_core_init_disconnected() is called, which in turn calls
dwc2_hs_phy_init().

GUSBCFG.USBTrdTim is cleared upon Core Soft Reset, so if
hsotg->params.phy_utmi_width is 8-bit, the value of GUSBCFG.USBTrdTim (the
default one: 0x5, corresponding to 16-bit) is always different from
hsotg->params.phy_utmi_width, thus dwc2_core_reset() is called every
time (usbcfg != usbcfg_old), which causes 2 issues:

1) The call to dwc2_core_reset() does another reset 300us after the initial
Chirp K of the first reset (which should last at least Tuch = 1ms), and
messes up the High-speed Detection Handshake: both hub and device drive
current into the D+ and D- lines at the same time.

2) GUSBCFG.USBTrdTim is cleared by the second reset, so its value is always
the default one (0x5).

Setting GUSBCFG.USBTrdTim after the potential call to dwc2_core_reset()
fixes both issues.  It is now set even when select_phy is false because the
cost of the Core Soft Reset is removed.

Fixes: 1e868545f2bb ("usb: dwc2: gadget: Move gadget phy init into core phy init")
Signed-off-by: Clément Lassieur <clement@lassieur.org>
Link: https://lore.kernel.org/r/20210603155921.940651-1-clement@lassieur.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: gadget: f_fs: Fix setting of device and driver data cross-references
Andrew Gabbasov [Thu, 3 Jun 2021 17:15:07 +0000 (12:15 -0500)]
usb: gadget: f_fs: Fix setting of device and driver data cross-references

FunctionFS device structure 'struct ffs_dev' and driver data structure
'struct ffs_data' are bound to each other with cross-reference pointers
'ffs_data->private_data' and 'ffs_dev->ffs_data'. While the first one
is supposed to be valid through the whole life of 'struct ffs_data'
(and while 'struct ffs_dev' exists non-freed), the second one is cleared
in 'ffs_closed()' (called from 'ffs_data_reset()' or the last
'ffs_data_put()'). This can be called several times, alternating in
different order with 'ffs_free_inst()', that, if possible, clears
the other cross-reference.

As a result, different cases of these calls order may leave stale
cross-reference pointers, used when the pointed structure is already
freed. Even if it occasionally doesn't cause kernel crash, this error
is reported by KASAN-enabled kernel configuration.

For example, the case [last 'ffs_data_put()' - 'ffs_free_inst()'] was
fixed by commit cdafb6d8b8da ("usb: gadget: f_fs: Fix use-after-free in
ffs_free_inst").

The other case ['ffs_data_reset()' - 'ffs_free_inst()' - 'ffs_data_put()']
now causes KASAN reported error [1], when 'ffs_data_reset()' clears
'ffs_dev->ffs_data', then 'ffs_free_inst()' frees the 'struct ffs_dev',
but can't clear 'ffs_data->private_data', which is then accessed
in 'ffs_closed()' called from 'ffs_data_put()'. This happens since
'ffs_dev->ffs_data' reference is cleared too early.

Moreover, one more use case, when 'ffs_free_inst()' is called immediately
after mounting FunctionFS device (that is before the descriptors are
written and 'ffs_ready()' is called), and then 'ffs_data_reset()'
or 'ffs_data_put()' is called from accessing "ep0" file or unmounting
the device. This causes KASAN error report like [2], since
'ffs_dev->ffs_data' is not yet set when 'ffs_free_inst()' can't properly
clear 'ffs_data->private_data', that is later accessed to freed structure.

Fix these (and may be other) cases of stale pointers access by moving
setting and clearing of the mentioned cross-references to the single
places, setting both of them when 'struct ffs_data' is created and
bound to 'struct ffs_dev', and clearing both of them when one of the
structures is destroyed. It seems convenient to make this pointer
initialization and structures binding in 'ffs_acquire_dev()' and
make pointers clearing in 'ffs_release_dev()'. This required some
changes in these functions parameters and return types.

Also, 'ffs_release_dev()' calling requires some cleanup, fixing minor
issues, like (1) 'ffs_release_dev()' is not called if 'ffs_free_inst()'
is called without unmounting the device, and "release_dev" callback
is not called at all, or (2) "release_dev" callback is called before
"ffs_closed" callback on unmounting, which seems to be not correctly
nested with "acquire_dev" and "ffs_ready" callbacks.
Make this cleanup togther with other mentioned 'ffs_release_dev()' changes.

[1]
==================================================================
root@rcar-gen3:~# mkdir /dev/cfs
root@rcar-gen3:~# mkdir /dev/ffs
root@rcar-gen3:~# modprobe libcomposite
root@rcar-gen3:~# mount -t configfs none /dev/cfs
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   64.340664] file system registered
root@rcar-gen3:~# mount -t functionfs ffs /dev/ffs
root@rcar-gen3:~# cd /dev/ffs
root@rcar-gen3:/dev/ffs# /home/root/ffs-test
ffs-test: info: ep0: writing descriptors (in v2 format)
[   83.181442] read descriptors
[   83.186085] read strings
ffs-test: info: ep0: writing strings
ffs-test: dbg:  ep1: starting
ffs-test: dbg:  ep2: starting
ffs-test: info: ep1: starts
ffs-test: info: ep2: starts
ffs-test: info: ep0: starts

^C
root@rcar-gen3:/dev/ffs# cd /home/root/
root@rcar-gen3:~# rmdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   98.935061] unloading
root@rcar-gen3:~# umount /dev/ffs
[  102.734301] ==================================================================
[  102.742059] BUG: KASAN: use-after-free in ffs_release_dev+0x64/0xa8 [usb_f_fs]
[  102.749683] Write of size 1 at addr ffff0004d46ff549 by task umount/2997
[  102.756709]
[  102.758311] CPU: 0 PID: 2997 Comm: umount Not tainted 5.13.0-rc4+ #8
[  102.764971] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[  102.772179] Call trace:
[  102.774779]  dump_backtrace+0x0/0x330
[  102.778653]  show_stack+0x20/0x2c
[  102.782152]  dump_stack+0x11c/0x1ac
[  102.785833]  print_address_description.constprop.0+0x30/0x274
[  102.791862]  kasan_report+0x14c/0x1c8
[  102.795719]  __asan_report_store1_noabort+0x34/0x58
[  102.800840]  ffs_release_dev+0x64/0xa8 [usb_f_fs]
[  102.805801]  ffs_fs_kill_sb+0x50/0x84 [usb_f_fs]
[  102.810663]  deactivate_locked_super+0xa0/0xf0
[  102.815339]  deactivate_super+0x98/0xac
[  102.819378]  cleanup_mnt+0xd0/0x1b0
[  102.823057]  __cleanup_mnt+0x1c/0x28
[  102.826823]  task_work_run+0x104/0x180
[  102.830774]  do_notify_resume+0x458/0x14e0
[  102.835083]  work_pending+0xc/0x5f8
[  102.838762]
[  102.840357] Allocated by task 2988:
[  102.844032]  kasan_save_stack+0x28/0x58
[  102.848071]  kasan_set_track+0x28/0x3c
[  102.852016]  ____kasan_kmalloc+0x84/0x9c
[  102.856142]  __kasan_kmalloc+0x10/0x1c
[  102.860088]  __kmalloc+0x214/0x2f8
[  102.863678]  kzalloc.constprop.0+0x14/0x20 [usb_f_fs]
[  102.868990]  ffs_alloc_inst+0x8c/0x208 [usb_f_fs]
[  102.873942]  try_get_usb_function_instance+0xf0/0x164 [libcomposite]
[  102.880629]  usb_get_function_instance+0x64/0x68 [libcomposite]
[  102.886858]  function_make+0x128/0x1ec [libcomposite]
[  102.892185]  configfs_mkdir+0x330/0x590 [configfs]
[  102.897245]  vfs_mkdir+0x12c/0x1bc
[  102.900835]  do_mkdirat+0x180/0x1d0
[  102.904513]  __arm64_sys_mkdirat+0x80/0x94
[  102.908822]  invoke_syscall+0xf8/0x25c
[  102.912772]  el0_svc_common.constprop.0+0x150/0x1a0
[  102.917891]  do_el0_svc+0xa0/0xd4
[  102.921386]  el0_svc+0x24/0x34
[  102.924613]  el0_sync_handler+0xcc/0x154
[  102.928743]  el0_sync+0x198/0x1c0
[  102.932238]
[  102.933832] Freed by task 2996:
[  102.937144]  kasan_save_stack+0x28/0x58
[  102.941181]  kasan_set_track+0x28/0x3c
[  102.945128]  kasan_set_free_info+0x28/0x4c
[  102.949435]  ____kasan_slab_free+0x104/0x118
[  102.953921]  __kasan_slab_free+0x18/0x24
[  102.958047]  slab_free_freelist_hook+0x148/0x1f0
[  102.962897]  kfree+0x318/0x440
[  102.966123]  ffs_free_inst+0x164/0x2d8 [usb_f_fs]
[  102.971075]  usb_put_function_instance+0x84/0xa4 [libcomposite]
[  102.977302]  ffs_attr_release+0x18/0x24 [usb_f_fs]
[  102.982344]  config_item_put+0x140/0x1a4 [configfs]
[  102.987486]  configfs_rmdir+0x3fc/0x518 [configfs]
[  102.992535]  vfs_rmdir+0x114/0x234
[  102.996122]  do_rmdir+0x274/0x2b0
[  102.999617]  __arm64_sys_unlinkat+0x94/0xc8
[  103.004015]  invoke_syscall+0xf8/0x25c
[  103.007961]  el0_svc_common.constprop.0+0x150/0x1a0
[  103.013080]  do_el0_svc+0xa0/0xd4
[  103.016575]  el0_svc+0x24/0x34
[  103.019801]  el0_sync_handler+0xcc/0x154
[  103.023930]  el0_sync+0x198/0x1c0
[  103.027426]
[  103.029020] The buggy address belongs to the object at ffff0004d46ff500
[  103.029020]  which belongs to the cache kmalloc-128 of size 128
[  103.042079] The buggy address is located 73 bytes inside of
[  103.042079]  128-byte region [ffff0004d46ff500ffff0004d46ff580)
[  103.054236] The buggy address belongs to the page:
[  103.059262] page:0000000021aa849b refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0004d46fee00 pfn:0x5146fe
[  103.070437] head:0000000021aa849b order:1 compound_mapcount:0
[  103.076456] flags: 0x8000000000010200(slab|head|zone=2)
[  103.081948] raw: 8000000000010200 fffffc0013521a80 0000000d0000000d ffff0004c0002300
[  103.090052] raw: ffff0004d46fee00 000000008020001e 00000001ffffffff 0000000000000000
[  103.098150] page dumped because: kasan: bad access detected
[  103.103985]
[  103.105578] Memory state around the buggy address:
[  103.110602]  ffff0004d46ff400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  103.118161]  ffff0004d46ff480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  103.125726] >ffff0004d46ff500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  103.133284]                                               ^
[  103.139120]  ffff0004d46ff580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  103.146679]  ffff0004d46ff600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  103.154238] ==================================================================
[  103.161792] Disabling lock debugging due to kernel taint
[  103.167319] Unable to handle kernel paging request at virtual address 0037801d6000018e
[  103.175406] Mem abort info:
[  103.178457]   ESR = 0x96000004
[  103.181609]   EC = 0x25: DABT (current EL), IL = 32 bits
[  103.187020]   SET = 0, FnV = 0
[  103.190185]   EA = 0, S1PTW = 0
[  103.193417] Data abort info:
[  103.196385]   ISV = 0, ISS = 0x00000004
[  103.200315]   CM = 0, WnR = 0
[  103.203366] [0037801d6000018e] address between user and kernel address ranges
[  103.210611] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[  103.216231] Modules linked in: usb_f_fs libcomposite configfs ath9k_htc led_class mac80211 libarc4 ath9k_common ath9k_hw ath cfg80211 aes_ce_blk sata_rc4
[  103.259233] CPU: 0 PID: 2997 Comm: umount Tainted: G    B             5.13.0-rc4+ #8
[  103.267031] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[  103.273951] pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--)
[  103.280001] pc : ffs_data_clear+0x138/0x370 [usb_f_fs]
[  103.285197] lr : ffs_data_clear+0x124/0x370 [usb_f_fs]
[  103.290385] sp : ffff800014777a80
[  103.293725] x29: ffff800014777a80 x28: ffff0004d7649c80 x27: 0000000000000000
[  103.300931] x26: ffff800014777fb0 x25: ffff60009aec9394 x24: ffff0004d7649ca4
[  103.308136] x23: 1fffe0009a3d063a x22: dfff800000000000 x21: ffff0004d1e831d0
[  103.315340] x20: e1c000eb00000bb4 x19: ffff0004d1e83000 x18: 0000000000000000
[  103.322545] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[  103.329748] x14: 0720072007200720 x13: 0720072007200720 x12: 1ffff000012ef658
[  103.336952] x11: ffff7000012ef658 x10: 0720072007200720 x9 : ffff800011322648
[  103.344157] x8 : ffff800014777818 x7 : ffff80000977b2c7 x6 : 0000000000000000
[  103.351359] x5 : 0000000000000001 x4 : ffff7000012ef659 x3 : 0000000000000001
[  103.358562] x2 : 0000000000000000 x1 : 1c38001d6000018e x0 : e1c000eb00000c70
[  103.365766] Call trace:
[  103.368235]  ffs_data_clear+0x138/0x370 [usb_f_fs]
[  103.373076]  ffs_data_reset+0x20/0x304 [usb_f_fs]
[  103.377829]  ffs_data_closed+0x1ec/0x244 [usb_f_fs]
[  103.382755]  ffs_fs_kill_sb+0x70/0x84 [usb_f_fs]
[  103.387420]  deactivate_locked_super+0xa0/0xf0
[  103.391905]  deactivate_super+0x98/0xac
[  103.395776]  cleanup_mnt+0xd0/0x1b0
[  103.399299]  __cleanup_mnt+0x1c/0x28
[  103.402906]  task_work_run+0x104/0x180
[  103.406691]  do_notify_resume+0x458/0x14e0
[  103.410823]  work_pending+0xc/0x5f8
[  103.414351] Code: b4000a54 9102f280 12000802 d343fc01 (38f66821)
[  103.420490] ---[ end trace 57b43a50e8244f57 ]---
Segmentation fault
root@rcar-gen3:~#
==================================================================

[2]
==================================================================
root@rcar-gen3:~# mkdir /dev/ffs
root@rcar-gen3:~# modprobe libcomposite
root@rcar-gen3:~#
root@rcar-gen3:~# mount -t configfs none /dev/cfs
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1
root@rcar-gen3:~# mkdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   54.766480] file system registered
root@rcar-gen3:~# mount -t functionfs ffs /dev/ffs
root@rcar-gen3:~# rmdir /dev/cfs/usb_gadget/g1/functions/ffs.ffs
[   63.197597] unloading
root@rcar-gen3:~# cat /dev/ffs/ep0
cat: read error:[   67.213506] ==================================================================
[   67.222095] BUG: KASAN: use-after-free in ffs_data_clear+0x70/0x370 [usb_f_fs]
[   67.229699] Write of size 1 at addr ffff0004c26e974a by task cat/2994
[   67.236446]
[   67.238045] CPU: 0 PID: 2994 Comm: cat Not tainted 5.13.0-rc4+ #8
[   67.244431] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[   67.251624] Call trace:
[   67.254212]  dump_backtrace+0x0/0x330
[   67.258081]  show_stack+0x20/0x2c
[   67.261579]  dump_stack+0x11c/0x1ac
[   67.265260]  print_address_description.constprop.0+0x30/0x274
[   67.271286]  kasan_report+0x14c/0x1c8
[   67.275143]  __asan_report_store1_noabort+0x34/0x58
[   67.280265]  ffs_data_clear+0x70/0x370 [usb_f_fs]
[   67.285220]  ffs_data_reset+0x20/0x304 [usb_f_fs]
[   67.290172]  ffs_data_closed+0x240/0x244 [usb_f_fs]
[   67.295305]  ffs_ep0_release+0x40/0x54 [usb_f_fs]
[   67.300256]  __fput+0x304/0x580
[   67.303576]  ____fput+0x18/0x24
[   67.306893]  task_work_run+0x104/0x180
[   67.310846]  do_notify_resume+0x458/0x14e0
[   67.315154]  work_pending+0xc/0x5f8
[   67.318834]
[   67.320429] Allocated by task 2988:
[   67.324105]  kasan_save_stack+0x28/0x58
[   67.328144]  kasan_set_track+0x28/0x3c
[   67.332090]  ____kasan_kmalloc+0x84/0x9c
[   67.336217]  __kasan_kmalloc+0x10/0x1c
[   67.340163]  __kmalloc+0x214/0x2f8
[   67.343754]  kzalloc.constprop.0+0x14/0x20 [usb_f_fs]
[   67.349066]  ffs_alloc_inst+0x8c/0x208 [usb_f_fs]
[   67.354017]  try_get_usb_function_instance+0xf0/0x164 [libcomposite]
[   67.360705]  usb_get_function_instance+0x64/0x68 [libcomposite]
[   67.366934]  function_make+0x128/0x1ec [libcomposite]
[   67.372260]  configfs_mkdir+0x330/0x590 [configfs]
[   67.377320]  vfs_mkdir+0x12c/0x1bc
[   67.380911]  do_mkdirat+0x180/0x1d0
[   67.384589]  __arm64_sys_mkdirat+0x80/0x94
[   67.388899]  invoke_syscall+0xf8/0x25c
[   67.392850]  el0_svc_common.constprop.0+0x150/0x1a0
[   67.397969]  do_el0_svc+0xa0/0xd4
[   67.401464]  el0_svc+0x24/0x34
[   67.404691]  el0_sync_handler+0xcc/0x154
[   67.408819]  el0_sync+0x198/0x1c0
[   67.412315]
[   67.413909] Freed by task 2993:
[   67.417220]  kasan_save_stack+0x28/0x58
[   67.421257]  kasan_set_track+0x28/0x3c
[   67.425204]  kasan_set_free_info+0x28/0x4c
[   67.429513]  ____kasan_slab_free+0x104/0x118
[   67.434001]  __kasan_slab_free+0x18/0x24
[   67.438128]  slab_free_freelist_hook+0x148/0x1f0
[   67.442978]  kfree+0x318/0x440
[   67.446205]  ffs_free_inst+0x164/0x2d8 [usb_f_fs]
[   67.451156]  usb_put_function_instance+0x84/0xa4 [libcomposite]
[   67.457385]  ffs_attr_release+0x18/0x24 [usb_f_fs]
[   67.462428]  config_item_put+0x140/0x1a4 [configfs]
[   67.467570]  configfs_rmdir+0x3fc/0x518 [configfs]
[   67.472626]  vfs_rmdir+0x114/0x234
[   67.476215]  do_rmdir+0x274/0x2b0
[   67.479710]  __arm64_sys_unlinkat+0x94/0xc8
[   67.484108]  invoke_syscall+0xf8/0x25c
[   67.488055]  el0_svc_common.constprop.0+0x150/0x1a0
[   67.493175]  do_el0_svc+0xa0/0xd4
[   67.496671]  el0_svc+0x24/0x34
[   67.499896]  el0_sync_handler+0xcc/0x154
[   67.504024]  el0_sync+0x198/0x1c0
[   67.507520]
[   67.509114] The buggy address belongs to the object at ffff0004c26e9700
[   67.509114]  which belongs to the cache kmalloc-128 of size 128
[   67.522171] The buggy address is located 74 bytes inside of
[   67.522171]  128-byte region [ffff0004c26e9700ffff0004c26e9780)
[   67.534328] The buggy address belongs to the page:
[   67.539355] page:000000003177a217 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5026e8
[   67.549175] head:000000003177a217 order:1 compound_mapcount:0
[   67.555195] flags: 0x8000000000010200(slab|head|zone=2)
[   67.560687] raw: 8000000000010200 fffffc0013037100 0000000c00000002 ffff0004c0002300
[   67.568791] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000
[   67.576890] page dumped because: kasan: bad access detected
[   67.582725]
[   67.584318] Memory state around the buggy address:
[   67.589343]  ffff0004c26e9600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   67.596903]  ffff0004c26e9680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   67.604463] >ffff0004c26e9700: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   67.612022]                                               ^
[   67.617860]  ffff0004c26e9780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   67.625421]  ffff0004c26e9800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   67.632981] ==================================================================
[   67.640535] Disabling lock debugging due to kernel taint
 File descriptor[   67.646100] Unable to handle kernel paging request at virtual address fabb801d4000018d
 in bad state
[   67.655456] Mem abort info:
[   67.659619]   ESR = 0x96000004
[   67.662801]   EC = 0x25: DABT (current EL), IL = 32 bits
[   67.668225]   SET = 0, FnV = 0
[   67.671375]   EA = 0, S1PTW = 0
[   67.674613] Data abort info:
[   67.677587]   ISV = 0, ISS = 0x00000004
[   67.681522]   CM = 0, WnR = 0
[   67.684588] [fabb801d4000018d] address between user and kernel address ranges
[   67.691849] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[   67.697470] Modules linked in: usb_f_fs libcomposite configfs ath9k_htc led_class mac80211 libarc4 ath9k_common ath9k_hw ath cfg80211 aes_ce_blk crypto_simd cryptd aes_ce_cipher ghash_ce gf128mul sha2_ce sha1_ce evdev sata_rcar libata xhci_plat_hcd scsi_mod xhci_hcd rene4
[   67.740467] CPU: 0 PID: 2994 Comm: cat Tainted: G    B             5.13.0-rc4+ #8
[   67.748005] Hardware name: Renesas Salvator-X board based on r8a77951 (DT)
[   67.754924] pstate: 00000005 (nzcv daif -PAN -UAO -TCO BTYPE=--)
[   67.760974] pc : ffs_data_clear+0x138/0x370 [usb_f_fs]
[   67.766178] lr : ffs_data_clear+0x124/0x370 [usb_f_fs]
[   67.771365] sp : ffff800014767ad0
[   67.774706] x29: ffff800014767ad0 x28: ffff800009cf91c0 x27: ffff0004c54861a0
[   67.781913] x26: ffff0004dc90b288 x25: 1fffe00099ec10f5 x24: 00000000000a801d
[   67.789118] x23: 1fffe00099f6953a x22: dfff800000000000 x21: ffff0004cfb4a9d0
[   67.796322] x20: d5e000ea00000bb1 x19: ffff0004cfb4a800 x18: 0000000000000000
[   67.803526] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[   67.810730] x14: 0720072007200720 x13: 0720072007200720 x12: 1ffff000028ecefa
[   67.817934] x11: ffff7000028ecefa x10: 0720072007200720 x9 : ffff80001132c014
[   67.825137] x8 : ffff8000147677d8 x7 : ffff8000147677d7 x6 : 0000000000000000
[   67.832341] x5 : 0000000000000001 x4 : ffff7000028ecefb x3 : 0000000000000001
[   67.839544] x2 : 0000000000000005 x1 : 1abc001d4000018d x0 : d5e000ea00000c6d
[   67.846748] Call trace:
[   67.849218]  ffs_data_clear+0x138/0x370 [usb_f_fs]
[   67.854058]  ffs_data_reset+0x20/0x304 [usb_f_fs]
[   67.858810]  ffs_data_closed+0x240/0x244 [usb_f_fs]
[   67.863736]  ffs_ep0_release+0x40/0x54 [usb_f_fs]
[   67.868488]  __fput+0x304/0x580
[   67.871665]  ____fput+0x18/0x24
[   67.874837]  task_work_run+0x104/0x180
[   67.878622]  do_notify_resume+0x458/0x14e0
[   67.882754]  work_pending+0xc/0x5f8
[   67.886282] Code: b4000a54 9102f280 12000802 d343fc01 (38f66821)
[   67.892422] ---[ end trace 6d7cedf53d7abbea ]---
Segmentation fault
root@rcar-gen3:~#
==================================================================

Fixes: 4b187fceec3c ("usb: gadget: FunctionFS: add devices management code")
Fixes: 3262ad824307 ("usb: gadget: f_fs: Stop ffs_closed NULL pointer dereference")
Fixes: cdafb6d8b8da ("usb: gadget: f_fs: Fix use-after-free in ffs_free_inst")
Reported-by: Bhuvanesh Surachari <bhuvanesh_surachari@mentor.com>
Tested-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Reviewed-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
Link: https://lore.kernel.org/r/20210603171507.22514-1-andrew_gabbasov@mentor.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc3: support 64 bit DMA in platform driver
Sven Peter [Mon, 7 Jun 2021 06:17:51 +0000 (08:17 +0200)]
usb: dwc3: support 64 bit DMA in platform driver

Currently, the dwc3 platform driver does not explicitly ask for
a DMA mask. This makes it fall back to the default 32-bit mask which
breaks the driver on systems that only have RAM starting above the
first 4G like the Apple M1 SoC.

Fix this by calling dma_set_mask_and_coherent with a 64bit mask.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/r/20210607061751.89752-1-sven@svenpeter.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoUSB: core: Avoid WARNings for 0-length descriptor requests
Alan Stern [Mon, 7 Jun 2021 15:23:07 +0000 (11:23 -0400)]
USB: core: Avoid WARNings for 0-length descriptor requests

The USB core has utility routines to retrieve various types of
descriptors.  These routines will now provoke a WARN if they are asked
to retrieve 0 bytes (USB "receive" requests must not have zero
length), so avert this by checking the size argument at the start.

CC: Johan Hovold <johan@kernel.org>
Reported-and-tested-by: syzbot+7dbcd9ff34dc4ed45240@syzkaller.appspotmail.com
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20210607152307.GD1768031@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: gadget: function: printer: use list_move instead of list_del/list_add
Baokun Li [Wed, 9 Jun 2021 07:06:12 +0000 (15:06 +0800)]
usb: gadget: function: printer: use list_move instead of list_del/list_add

Using list_move() instead of list_del() + list_add().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Link: https://lore.kernel.org/r/20210609070612.1325044-1-libaokun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc3: core: fix kernel panic when do reboot
Peter Chen [Tue, 8 Jun 2021 10:56:56 +0000 (18:56 +0800)]
usb: dwc3: core: fix kernel panic when do reboot

When do system reboot, it calls dwc3_shutdown and the whole debugfs
for dwc3 has removed first, when the gadget tries to do deinit, and
remove debugfs for its endpoints, it meets NULL pointer dereference
issue when call debugfs_lookup. Fix it by removing the whole dwc3
debugfs later than dwc3_drd_exit.

[ 2924.958838] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000002
....
[ 2925.030994] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
[ 2925.037005] pc : inode_permission+0x2c/0x198
[ 2925.041281] lr : lookup_one_len_common+0xb0/0xf8
[ 2925.045903] sp : ffff80001276ba70
[ 2925.049218] x29: ffff80001276ba70 x28: ffff0000c01f0000 x27: 0000000000000000
[ 2925.056364] x26: ffff800011791e70 x25: 0000000000000008 x24: dead000000000100
[ 2925.063510] x23: dead000000000122 x22: 0000000000000000 x21: 0000000000000001
[ 2925.070652] x20: ffff8000122c6188 x19: 0000000000000000 x18: 0000000000000000
[ 2925.077797] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000004
[ 2925.084943] x14: ffffffffffffffff x13: 0000000000000000 x12: 0000000000000030
[ 2925.092087] x11: 0101010101010101 x10: 7f7f7f7f7f7f7f7f x9 : ffff8000102b2420
[ 2925.099232] x8 : 7f7f7f7f7f7f7f7f x7 : feff73746e2f6f64 x6 : 0000000000008080
[ 2925.106378] x5 : 61c8864680b583eb x4 : 209e6ec2d263dbb7 x3 : 000074756f307065
[ 2925.113523] x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffff8000122c6188
[ 2925.120671] Call trace:
[ 2925.123119]  inode_permission+0x2c/0x198
[ 2925.127042]  lookup_one_len_common+0xb0/0xf8
[ 2925.131315]  lookup_one_len_unlocked+0x34/0xb0
[ 2925.135764]  lookup_positive_unlocked+0x14/0x50
[ 2925.140296]  debugfs_lookup+0x68/0xa0
[ 2925.143964]  dwc3_gadget_free_endpoints+0x84/0xb0
[ 2925.148675]  dwc3_gadget_exit+0x28/0x78
[ 2925.152518]  dwc3_drd_exit+0x100/0x1f8
[ 2925.156267]  dwc3_remove+0x11c/0x120
[ 2925.159851]  dwc3_shutdown+0x14/0x20
[ 2925.163432]  platform_shutdown+0x28/0x38
[ 2925.167360]  device_shutdown+0x15c/0x378
[ 2925.171291]  kernel_restart_prepare+0x3c/0x48
[ 2925.175650]  kernel_restart+0x1c/0x68
[ 2925.179316]  __do_sys_reboot+0x218/0x240
[ 2925.183247]  __arm64_sys_reboot+0x28/0x30
[ 2925.187262]  invoke_syscall+0x48/0x100
[ 2925.191017]  el0_svc_common.constprop.0+0x48/0xc8
[ 2925.195726]  do_el0_svc+0x28/0x88
[ 2925.199045]  el0_svc+0x20/0x30
[ 2925.202104]  el0_sync_handler+0xa8/0xb0
[ 2925.205942]  el0_sync+0x148/0x180
[ 2925.209270] Code: a9025bf5 2a0203f5 121f0056 370802b5 (79400660)
[ 2925.215372] ---[ end trace 124254d8e485a58b ]---
[ 2925.220012] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 2925.227676] Kernel Offset: disabled
[ 2925.231164] CPU features: 0x00001001,20000846
[ 2925.235521] Memory Limit: none
[ 2925.238580] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---

Fixes: 5ff90af9da8f ("usb: dwc3: debugfs: Add and remove endpoint dirs dynamically")
Cc: Jack Pham <jackp@codeaurora.org>
Tested-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20210608105656.10795-1-peter.chen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoUSB: UDC: Implement udc_async_callbacks in net2272
Alan Stern [Thu, 20 May 2021 20:22:06 +0000 (16:22 -0400)]
USB: UDC: Implement udc_async_callbacks in net2272

This patch adds a udc_async_callbacks handler to the net2272 UDC
driver, which will prevent a theoretical race during gadget unbinding.

The net2272 driver is sufficiently complicated that I didn't want to
mess around with IRQ settings.  Instead, the patch simply adds a new
flag to control async callbacks, and checks the flag before issuing
any of them.

Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20210520202206.GF1216852@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoUSB: UDC: Implement udc_async_callbacks in net2280
Alan Stern [Thu, 20 May 2021 20:22:00 +0000 (16:22 -0400)]
USB: UDC: Implement udc_async_callbacks in net2280

This patch adds a udc_async_callbacks handler to the net2280 UDC
driver, which will prevent a theoretical race during gadget unbinding.

The net2280 driver is sufficiently complicated that I didn't want to
mess around with IRQ settings.  Instead, the patch simply adds a new
flag to control async callbacks, and checks the flag before issuing
any of them.

Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20210520202200.GE1216852@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoUSB: UDC: Implement udc_async_callbacks in dummy-hcd
Alan Stern [Thu, 20 May 2021 20:21:52 +0000 (16:21 -0400)]
USB: UDC: Implement udc_async_callbacks in dummy-hcd

This patch adds a udc_async_callbacks handler to the dummy-hcd UDC
driver, which will prevent a theoretical race during gadget unbinding.

The implementation is simple, since dummy-hcd already has a flag to
keep track of whether emulated IRQs are enabled.  All the handler has
to do is store the enable value in the flag, and avoid setting the
flag prematurely.

Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20210520202152.GD1216852@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoUSB: UDC core: Add udc_async_callbacks gadget op
Alan Stern [Thu, 20 May 2021 20:21:44 +0000 (16:21 -0400)]
USB: UDC core: Add udc_async_callbacks gadget op

The Gadget API has a theoretical race when a gadget driver is unbound.
Although the pull-up is turned off before the driver's ->unbind
callback runs, if the USB cable were to be unplugged at just the wrong
moment there would be nothing to prevent the UDC driver from invoking
the ->disconnect callback after the unbind has finished.  In theory,
other asynchronous callbacks could also happen during the time before
the UDC driver's udc_stop routine is called, and the gadget driver
would not be prepared to handle any of them.

We need a way to tell UDC drivers to stop issuing asynchronous (that is,
->suspend, ->resume, ->disconnect, ->reset, or ->setup) callbacks at
some point after the pull-up has been turned off and before the
->unbind callback runs.  This patch adds a new ->udc_async_callbacks
callback to the usb_gadget_ops structure for precisely this purpose,
and it adds the corresponding support to the UDC core.

Later patches in this series add support for udc_async_callbacks to
several UDC drivers.

Acked-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20210520202144.GC1216852@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agodoc: dt-binding: cdns,usb3: Add interrupt-names property under required
Aswath Govindraju [Fri, 28 May 2021 06:06:57 +0000 (11:36 +0530)]
doc: dt-binding: cdns,usb3: Add interrupt-names property under required

In the driver the interrupts are fetched by name. Therefore, add
interrupt names in the list of required properties

Fixes: 68989fe1c39d ("dt-bindings: usb: Convert cdns-usb3.txt to YAML schema")
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Link: https://lore.kernel.org/r/20210528060657.29100-1-a-govindraju@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: typec: intel_pmc_mux: Update IOM port status offset for AlderLake
Azhar Shaikh [Tue, 1 Jun 2021 03:58:43 +0000 (20:58 -0700)]
usb: typec: intel_pmc_mux: Update IOM port status offset for AlderLake

Intel AlderLake(ADL) IOM has a different IOM port status offset than
Intel TigerLake.
Add a new ACPI ID for ADL and use the IOM port status offset as per
the platform.

Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com>
Link: https://lore.kernel.org/r/20210601035843.71150-1-azhar.shaikh@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: phy: introduce usb_phy device type with its own uevent handler
Grzegorz Jaszczyk [Mon, 31 May 2021 12:22:22 +0000 (14:22 +0200)]
usb: phy: introduce usb_phy device type with its own uevent handler

The USB charger type and status was already propagated to userspace
through kobject_uevent_env during charger notify work. Nevertheless the
uevent could be lost e.g. because it could be fired at an early kernel
boot stage, way before udev daemon or any other user-space app was able
to catch it. Registering uevent hook for introduced usb_phy_dev_type
will allow to query sysfs 'uevent' file to restore that information at
any time.

Reviewed-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org>
Link: https://lore.kernel.org/r/20210531122222.453628-1-grzegorz.jaszczyk@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agodt-bindings: usb: cdns,usb3: Fix interrupts order
Geert Uytterhoeven [Thu, 27 May 2021 19:39:52 +0000 (21:39 +0200)]
dt-bindings: usb: cdns,usb3: Fix interrupts order

Correct the order of the descriptions for the "interrupts" property to
match the order of the "interrupt-names" property.

Fixes: 68989fe1c39d9b32 ("dt-bindings: usb: Convert cdns-usb3.txt to YAML schema")
Acked-by: Peter Chen <peter.chen@nxp.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20210527193952.1705127-1-geert@linux-m68k.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: mtu3: skip getting extcon when use manual drd switch
Chunfeng Yun [Fri, 28 May 2021 06:11:00 +0000 (14:11 +0800)]
usb: mtu3: skip getting extcon when use manual drd switch

When use manual drd switch, extcon is not used in fact, so no
need get it even it exists, just skip it like using role switch.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1622182260-23767-5-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: mtu3: use dev_err_probe to print error log about extcon
Chunfeng Yun [Fri, 28 May 2021 06:10:59 +0000 (14:10 +0800)]
usb: mtu3: use dev_err_probe to print error log about extcon

Print an error log when the error number is not -EPROBE_DEFER

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1622182260-23767-4-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: mtu3: dump a status register of IPPC
Chunfeng Yun [Fri, 28 May 2021 06:10:58 +0000 (14:10 +0800)]
usb: mtu3: dump a status register of IPPC

Add a SSUSB_IP_PW_STS1 register to show ip sleep status

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1622182260-23767-3-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: mtu3: remove repeated setting of speed
Chunfeng Yun [Fri, 28 May 2021 06:10:57 +0000 (14:10 +0800)]
usb: mtu3: remove repeated setting of speed

mtu3_gadget_start() will set speed, no need set it again in
mtu3_gadget_set_speed(), just save the desired speed.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1622182260-23767-2-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: mtu3: remove mtu3_ep0_setup() declaration in mtu3.h
Chunfeng Yun [Fri, 28 May 2021 06:10:56 +0000 (14:10 +0800)]
usb: mtu3: remove mtu3_ep0_setup() declaration in mtu3.h

It's defined and only used in the same file, so remove its declaration
in mtu3.h, and make it static

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1622182260-23767-1-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agousb: dwc3: debugfs: Add and remove endpoint dirs dynamically
Jack Pham [Sat, 29 May 2021 19:29:32 +0000 (12:29 -0700)]
usb: dwc3: debugfs: Add and remove endpoint dirs dynamically

The DWC3 DebugFS directory and files are currently created once
during probe.  This includes creation of subdirectories for each
of the gadget's endpoints.  This works fine for peripheral-only
controllers, as dwc3_core_init_mode() calls dwc3_gadget_init()
just prior to calling dwc3_debugfs_init().

However, for dual-role controllers, dwc3_core_init_mode() will
instead call dwc3_drd_init() which is problematic in a few ways.
First, the initial state must be determined, then dwc3_set_mode()
will have to schedule drd_work and by then dwc3_debugfs_init()
could have already been invoked.  Even if the initial mode is
peripheral, dwc3_gadget_init() happens after the DebugFS files
are created, and worse so if the initial state is host and the
controller switches to peripheral much later.  And secondly,
even if the gadget endpoints' debug entries were successfully
created, if the controller exits peripheral mode, its dwc3_eps
are freed so the debug files would now hold stale references.

So it is best if the DebugFS endpoint entries are created and
removed dynamically at the same time the underlying dwc3_eps are.
Do this by calling dwc3_debugfs_create_endpoint_dir() as each
endpoint is created, and conversely remove the DebugFS entry when
the endpoint is freed.

Fixes: 41ce1456e1db ("usb: dwc3: core: make dwc3_set_mode() work properly")
Reviewed-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Jack Pham <jackp@codeaurora.org>
Link: https://lore.kernel.org/r/20210529192932.22912-1-jackp@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoUSB: gr_udc: remove dentry storage for debugfs file
Greg Kroah-Hartman [Thu, 27 May 2021 10:14:26 +0000 (12:14 +0200)]
USB: gr_udc: remove dentry storage for debugfs file

There is no need to store the dentry pointer for a debugfs file that we
only use to remove it when the device goes away.  debugfs can do the
lookup for us instead, saving us some trouble, and making things smaller
overall.

Cc: Felipe Balbi <balbi@kernel.org>
Link: https://lore.kernel.org/r/20210527101426.3283214-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoRevert "usb: typec: mux: Remove requirement for the "orientation-switch" device property"
Heikki Krogerus [Wed, 2 Jun 2021 11:22:53 +0000 (14:22 +0300)]
Revert "usb: typec: mux: Remove requirement for the "orientation-switch" device property"

This reverts commit acad3e9c7250c5fd20d9778a163f2adc95de38f5.

The device property that can be used to identify the device
class/type of the remote port parent when device graph is
used is always needed after all. Without it there is no real
way to know is the requested connection actually described
in the device graph or not.

If the connection is described in the device graph but the
device instance is still missing for what ever reason, the
code defers probe for now.

Adding a comment to the code to explain this.

Reviewed-by: Li Jun <jun.li@nxp.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20210602112253.70200-1-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMerge 5.13-rc4 into usb-next
Greg Kroah-Hartman [Mon, 31 May 2021 07:50:26 +0000 (09:50 +0200)]
Merge 5.13-rc4 into usb-next

We need the usb/thunderbolt fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoLinux 5.13-rc4
Linus Torvalds [Sun, 30 May 2021 21:58:25 +0000 (11:58 -1000)]
Linux 5.13-rc4

3 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sun, 30 May 2021 04:24:00 +0000 (18:24 -1000)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "This is a bit larger than usual at rc4 time. The reason is due to
  Lee's work of fixing newly reported build warnings.

  The rest is fixes as usual"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (22 commits)
  MAINTAINERS: adjust to removing i2c designware platform data
  i2c: s3c2410: fix possible NULL pointer deref on read message after write
  i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
  i2c: i801: Don't generate an interrupt on bus reset
  i2c: mpc: implement erratum A-004447 workaround
  powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
  powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
  dt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag
  i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
  i2c: busses: i2c-st: Fix copy/paste function misnaming issues
  i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
  i2c: busses: i2c-ocores: Place the expected function names into the documentation headers
  i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
  i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
  i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'
  i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
  i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers
  i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
  i2c: sh_mobile: Use new clock calculation formulas for RZ/G2E
  i2c: I2C_HISI should depend on ACPI
  ...

3 years agoMerge tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 30 May 2021 04:16:09 +0000 (18:16 -1000)]
Merge tag 'seccomp-fixes-v5.13-rc4' of git://git./linux/kernel/git/kees/linux

Pull seccomp fixes from Kees Cook:
 "This fixes a hard-to-hit race condition in the addfd user_notif
  feature of seccomp, visible since v5.9.

  And a small documentation fix"

* tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  seccomp: Refactor notification handler to prepare for new semantics
  Documentation: seccomp: Fix user notification documentation

3 years agoMerge tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 30 May 2021 04:10:10 +0000 (18:10 -1000)]
Merge tag 'riscv-for-linus-5.13-rc4' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:
 "A handful of RISC-V related fixes:

   - avoid errors when the stack tracing code is tracing itself.

   - resurrect the memtest= kernel command line argument on RISC-V,
     which was briefly enabled during the merge window before a
     refactoring disabled it.

   - build fix and some warning cleanups"

* tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: kexec: Fix W=1 build warnings
  riscv: kprobes: Fix build error when MMU=n
  riscv: Select ARCH_USE_MEMTEST
  riscv: stacktrace: fix the riscv stacktrace when CONFIG_FRAME_POINTER enabled

3 years agoMerge tag 'xfs-5.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sun, 30 May 2021 03:47:19 +0000 (17:47 -1000)]
Merge tag 'xfs-5.13-fixes-3' of git://git./fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:
 "This week's pile mitigates some decades-old problems in how extent
  size hints interact with realtime volumes, fixes some failures in
  online shrink, and fixes a problem where directory and symlink
  shrinking on extremely fragmented filesystems could fail.

  The most user-notable change here is to point users at our (new) IRC
  channel on OFTC. Freedom isn't free, it costs folks like you and me;
  and if you don't kowtow, they'll expel everyone and take over your
  channel. (Ok, ok, that didn't fit the song lyrics...)

  Summary:

   - Fix a bug where unmapping operations end earlier than expected,
     which can cause chaos on multi-block directory and symlink shrink
     operations.

   - Fix an erroneous assert that can trigger if we try to transition a
     bmap structure from btree format to extents format with zero
     extents. This was exposed by xfs/538"

* tag 'xfs-5.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: bunmapi has unnecessary AG lock ordering issues
  xfs: btree format inode forks can have zero extents
  xfs: add new IRC channel to MAINTAINERS
  xfs: validate extsz hints against rt extent size when rtinherit is set
  xfs: standardize extent size hint validation
  xfs: check free AG space when making per-AG reservations

3 years agoseccomp: Refactor notification handler to prepare for new semantics
Sargun Dhillon [Mon, 17 May 2021 19:39:06 +0000 (12:39 -0700)]
seccomp: Refactor notification handler to prepare for new semantics

This refactors the user notification code to have a do / while loop around
the completion condition. This has a small change in semantic, in that
previously we ignored addfd calls upon wakeup if the notification had been
responded to, but instead with the new change we check for an outstanding
addfd calls prior to returning to userspace.

Rodrigo Campos also identified a bug that can result in addfd causing
an early return, when the supervisor didn't actually handle the
syscall [1].

[1]: https://lore.kernel.org/lkml/20210413160151.3301-1-rodrigo@kinvolk.io/

Fixes: 7cf97b125455 ("seccomp: Introduce addfd ioctl to seccomp user notifier")
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Rodrigo Campos <rodrigo@kinvolk.io>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210517193908.3113-3-sargun@sargun.me
3 years agoMerge tag 'thermal-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/therma...
Linus Torvalds [Sat, 29 May 2021 16:55:55 +0000 (06:55 -1000)]
Merge tag 'thermal-v5.13-rc4' of git://git./linux/kernel/git/thermal/linux

Pull thermal fixes from Daniel Lezcano:

 - Fix uninitialized error code value for the SPMI adc driver (Yang
   Yingliang)

 - Fix kernel doc warning (Yang Li)

 - Fix wrong read-write thermal trip point initialization (Srinivas
   Pandruvada)

* tag 'thermal-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
  thermal/drivers/qcom: Fix error code in adc_tm5_get_dt_channel_data()
  thermal/ti-soc-thermal: Fix kernel-doc
  thermal/drivers/intel: Initialize RW trip to THERMAL_TEMP_INVALID

3 years agoMerge tag 'char-misc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sat, 29 May 2021 16:41:50 +0000 (06:41 -1000)]
Merge tag 'char-misc-5.13-rc4' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some tiny char/misc driver fixes for 5.13-rc4.

  Nothing huge here, just some tiny fixes for reported issues:

   - two interconnect driver fixes

   - kgdb build warning fix for gcc-11

   - hgafb regression fix

   - soundwire driver fix

   - mei driver fix

  All have been in linux-next with no reported issues"

* tag 'char-misc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mei: request autosuspend after sending rx flow control
  kgdb: fix gcc-11 warnings harder
  video: hgafb: correctly handle card detect failure during probe
  soundwire: qcom: fix handling of qcom,ports-block-pack-mode
  interconnect: qcom: Add missing MODULE_DEVICE_TABLE
  interconnect: qcom: bcm-voter: add a missing of_node_put()

3 years agoMerge tag 'driver-core-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 29 May 2021 16:33:28 +0000 (06:33 -1000)]
Merge tag 'driver-core-5.13-rc4' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are three small driver core / debugfs fixes for 5.13-rc4:

   - debugfs fix for incorrect "lockdown" mode for selinux accesses

   - two device link changes, one bugfix and one cleanup

  All of these have been in linux-next for over a week with no reported
  problems"

* tag 'driver-core-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  drivers: base: Reduce device link removal code duplication
  drivers: base: Fix device link removal
  debugfs: fix security_locked_down() call for SELinux

3 years agoMerge tag 'staging-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sat, 29 May 2021 16:29:13 +0000 (06:29 -1000)]
Merge tag 'staging-5.13-rc4' of git://git./linux/kernel/git/gregkh/staging

Pull staging and IIO driver fixes from Greg KH:
 "Here are some small IIO and staging driver fixes for reported issues
  for 5.13-rc4.

  Nothing major here, tiny changes for reported problems, full details
  are in the shortlog if people are curious.

  All have been in linux-next for a while with no reported problems"

* tag 'staging-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: adc: ad7793: Add missing error code in ad7793_setup()
  iio: adc: ad7923: Fix undersized rx buffer.
  iio: adc: ad7768-1: Fix too small buffer passed to iio_push_to_buffers_with_timestamp()
  iio: dac: ad5770r: Put fwnode in error case during ->probe()
  iio: gyro: fxas21002c: balance runtime power in error path
  staging: emxx_udc: fix loop in _nbu2ss_nuke()
  staging: iio: cdc: ad7746: avoid overwrite of num_channels
  iio: adc: ad7192: handle regulator voltage error first
  iio: adc: ad7192: Avoid disabling a clock that was never enabled.
  iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers
  iio: adc: ad7124: Fix missbalanced regulator enable / disable on error.

3 years agoMerge tag 'tty-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sat, 29 May 2021 16:25:16 +0000 (06:25 -1000)]
Merge tag 'tty-5.13-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull tty / serial driver fixes from Greg KH:
 "Here are some small fixes for reported problems for tty and serial
  drivers for 5.13-rc4.

  They consist of:

   - 8250 bugfixes and new device support

   - lockdown security mode fixup

   - syzbot found problems fixed

   - 8250_omap fix for interrupt storm

   - revert of 8250_omap driver fix as it caused worse problem than the
     original issue

  All but the last patch have been in linux-next for a while, the last
  one is a revert of a problem found in linux-next with the 8250_omap
  driver change"

* tag 'tty-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "serial: 8250: 8250_omap: Fix possible interrupt storm"
  serial: 8250_pci: handle FL_NOIRQ board flag
  serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
  serial: 8250_pci: Add support for new HPE serial device
  serial: 8250: 8250_omap: Fix possible interrupt storm
  serial: 8250: Use BIT(x) for UART_{CAP,BUG}_*
  serial: 8250: Add UART_BUG_TXRACE workaround for Aspeed VUART
  serial: 8250_dw: Add device HID for new AMD UART controller
  serial: sh-sci: Fix off-by-one error in FIFO threshold register setting
  serial: core: fix suspicious security_locked_down() call
  serial: tegra: Fix a mask operation that is always true

3 years agoMerge tag 'usb-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sat, 29 May 2021 16:11:21 +0000 (06:11 -1000)]
Merge tag 'usb-5.13-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt fixes from Greg KH:
 "Here are a number of tiny USB and Thunderbolt driver fixes for
  5.13-rc4.

  They consist of:

   - thunderbolt fixes for some NVM bound issues

   - xhci fixes for reported problems

   - control-request fixups

   - documentation build warning fixes

   - new usb-serial driver device ids

   - typec bugfixes for reported issues

   - usbfs warning fixups (could be triggered from userspace)

   - other tiny fixes for reported problems.

  All of these have been in linux-next with no reported issues"

* tag 'usb-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
  xhci: Fix 5.12 regression of missing xHC cache clearing command after a Stall
  xhci: fix giving back URB with incorrect status regression in 5.12
  usb: gadget: udc: renesas_usb3: Fix a race in usb3_start_pipen()
  usb: typec: tcpm: Respond Not_Supported if no snk_vdo
  usb: typec: tcpm: Properly interrupt VDM AMS
  USB: trancevibrator: fix control-request direction
  usb: Restore the usb_header label
  usb: typec: tcpm: Use LE to CPU conversion when accessing msg->header
  usb: typec: ucsi: Clear pending after acking connector change
  usb: typec: mux: Fix matching with typec_altmode_desc
  misc/uss720: fix memory leak in uss720_probe
  usb: dwc3: gadget: Properly track pending and queued SG
  USB: usbfs: Don't WARN about excessively large memory allocations
  thunderbolt: usb4: Fix NVM read buffer bounds and offset issue
  thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue
  usb: chipidea: udc: assign interrupt number to USB gadget structure
  usb: cdnsp: Fix lack of removing request from pending list.
  usb: cdns3: Fix runtime PM imbalance on error
  USB: serial: pl2303: add device id for ADLINK ND-6530 GC
  USB: serial: ti_usb_3410_5052: add startech.com device id
  ...

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 29 May 2021 16:02:25 +0000 (06:02 -1000)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "ARM fixes:

   - Another state update on exit to userspace fix

   - Prevent the creation of mixed 32/64 VMs

   - Fix regression with irqbypass not restarting the guest on failed
     connect

   - Fix regression with debug register decoding resulting in
     overlapping access

   - Commit exception state on exit to usrspace

   - Fix the MMU notifier return values

   - Add missing 'static' qualifiers in the new host stage-2 code

  x86 fixes:

   - fix guest missed wakeup with assigned devices

   - fix WARN reported by syzkaller

   - do not use BIT() in UAPI headers

   - make the kvm_amd.avic parameter bool

  PPC fixes:

   - make halt polling heuristics consistent with other architectures

  selftests:

   - various fixes

   - new performance selftest memslot_perf_test

   - test UFFD minor faults in demand_paging_test"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (44 commits)
  selftests: kvm: fix overlapping addresses in memslot_perf_test
  KVM: X86: Kill off ctxt->ud
  KVM: X86: Fix warning caused by stale emulation context
  KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
  KVM: x86/mmu: Fix comment mentioning skip_4k
  KVM: VMX: update vcpu posted-interrupt descriptor when assigning device
  KVM: rename KVM_REQ_PENDING_TIMER to KVM_REQ_UNBLOCK
  KVM: x86: add start_assignment hook to kvm_x86_ops
  KVM: LAPIC: Narrow the timer latency between wait_lapic_expire and world switch
  selftests: kvm: do only 1 memslot_perf_test run by default
  KVM: X86: Use _BITUL() macro in UAPI headers
  KVM: selftests: add shared hugetlbfs backing source type
  KVM: selftests: allow using UFFD minor faults for demand paging
  KVM: selftests: create alias mappings when using shared memory
  KVM: selftests: add shmem backing source type
  KVM: selftests: refactor vm_mem_backing_src_type flags
  KVM: selftests: allow different backing source types
  KVM: selftests: compute correct demand paging size
  KVM: selftests: simplify setup_demand_paging error handling
  KVM: selftests: Print a message if /dev/kvm is missing
  ...

3 years agoMerge tag 's390-5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Sat, 29 May 2021 15:51:53 +0000 (05:51 -1000)]
Merge tag 's390-5.13-3' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:
 "Fix races in vfio-ccw request handling"

* tag 's390-5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  vfio-ccw: Serialize FSM IDLE state with I/O completion
  vfio-ccw: Reset FSM state to IDLE inside FSM
  vfio-ccw: Check initialized flag in cp_init()

3 years agoselftests: kvm: fix overlapping addresses in memslot_perf_test
Paolo Bonzini [Fri, 28 May 2021 19:10:58 +0000 (15:10 -0400)]
selftests: kvm: fix overlapping addresses in memslot_perf_test

vm_create allocates memory and maps it close to GPA.  This memory
is separate from what is allocated in subsequent calls to
vm_userspace_mem_region_add, so it is incorrect to pass the
test memory size to vm_create_default.  Just pass a small
fixed amount of memory which can be used later for page table,
otherwise GPAs are already allocated at MEM_GPA and the
test aborts.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 29 May 2021 00:47:48 +0000 (14:47 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Ten small fixes, all in drivers"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal
  scsi: hisi_sas: Drop free_irq() of devm_request_irq() allocated irq
  scsi: vmw_pvscsi: Set correct residual data length
  scsi: bnx2fc: Return failure if io_req is already in ABTS processing
  scsi: aic7xxx: Remove multiple definition of globals
  scsi: aic7xxx: Restore several defines for aic7xxx firmware build
  scsi: target: iblock: Fix smp_processor_id() BUG messages
  scsi: libsas: Use _safe() loop in sas_resume_port()
  scsi: target: tcmu: Fix xarray RCU warning
  scsi: target: core: Avoid smp_processor_id() in preemptible code

3 years agoMerge tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 29 May 2021 00:42:37 +0000 (14:42 -1000)]
Merge tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request (Christoph):
      - fix a memory leak in nvme_cdev_add (Guoqing Jiang)
      - fix inline data size comparison in nvmet_tcp_queue_response (Hou
        Pu)
      - fix false keep-alive timeout when a controller is torn down
        (Sagi Grimberg)
      - fix a nvme-tcp Kconfig dependency (Sagi Grimberg)
      - short-circuit reconnect retries for FC (Hannes Reinecke)
      - decode host pathing error for connect (Hannes Reinecke)

 - MD pull request (Song):
      - Fix incorrect chunk boundary assert (Christoph)

 - Fix s390/dasd verification panic (Stefan)

* tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
  nvmet: fix false keep-alive timeout when a controller is torn down
  nvmet-tcp: fix inline data size comparison in nvmet_tcp_queue_response
  nvme-tcp: remove incorrect Kconfig dep in BLK_DEV_NVME
  md/raid5: remove an incorrect assert in in_chunk_boundary
  s390/dasd: add missing discipline function
  nvme-fabrics: decode host pathing error for connect
  nvme-fc: short-circuit reconnect retries
  nvme: fix potential memory leaks in nvme_cdev_add

3 years agoMerge tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 29 May 2021 00:35:55 +0000 (14:35 -1000)]
Merge tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A few minor fixes:

   - Fix an issue with hashed wait removal on exit (Zqiang, Pavel)

   - Fix a recent data race introduced in this series (Marco)"

* tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
  io_uring: fix data race to avoid potential NULL-deref
  io-wq: Fix UAF when wakeup wqe in hash waitqueue
  io_uring/io-wq: close io-wq full-stop gap

3 years agoMerge tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Sat, 29 May 2021 00:28:58 +0000 (14:28 -1000)]
Merge tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Pretty quiet this week, couple of amdgpu, one i915, and a few misc otherwise.

  ttm:
   - prevent irrelevant swapout

  amdgpu:
   - MultiGPU fan fix
   - VCN powergating fixes

  amdkfd:
   - Fix SDMA register offset error

  meson:
   - fix shutdown crash

  i915:
   - Re-enable LTTPR non-transparent LT mode for DPCD_REV < 1.4"

* tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm:
  drm/ttm: Skip swapout if ttm object is not populated
  drm/i915: Reenable LTTPR non-transparent LT mode for DPCD_REV<1.4
  drm/meson: fix shutdown crash when component not probed
  drm/amdgpu/jpeg3: add cancel_delayed_work_sync before power gate
  drm/amdgpu/jpeg2.5: add cancel_delayed_work_sync before power gate
  drm/amdgpu/jpeg2.0: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn3: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn2.5: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn1: add cancel_delayed_work_sync before power gate
  drm/amdkfd: correct sienna_cichlid SDMA RLC register offset error
  drm/amd/pm: correct MGpuFanBoost setting

3 years agoMerge tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sat, 29 May 2021 00:23:05 +0000 (14:23 -1000)]
Merge tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix error checking of BPF prog attachment in 'perf stat'.

 - Fix getting maximum number of fds in the vendor events JSON parser.

 - Move debug initialization earlier, fixing a segfault in some cases.

 - Fix eventcode of power10 JSON events.

* tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf vendor events powerpc: Fix eventcode of power10 JSON events
  perf stat: Fix error check for bpf_program__attach
  perf debug: Move debug initialization earlier
  perf jevents: Fix getting maximum number of fds

3 years agoMerge tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 29 May 2021 00:15:47 +0000 (14:15 -1000)]
Merge tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three SMB3 fixes.

  Two for stable, and the other fixes a problem pointed out with a
  recently added ioctl"

* tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: change format of CIFS_FULL_KEY_DUMP ioctl
  cifs: fix string declarations and assignments in tracepoints
  cifs: set server->cipher_type to AES-128-CCM for SMB3.0

3 years agoMerge tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Fri, 28 May 2021 18:53:19 +0000 (08:53 -1000)]
Merge tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
"Stable fixes:
   - Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
   - Fix Oops in xs_tcp_send_request() when transport is disconnected
   - Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()

  Bugfixes:
   - Fix instances where signal_pending() should be fatal_signal_pending()
   - fix an incorrect limit in filelayout_decode_layout()
   - Fixes for the SUNRPC backlogged RPC queue
   - Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
   - Revert commit 586a0787ce35 ("Clean up rpcrdma_prepare_readch()")"

* tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: Remove trailing semicolon in macros
  xprtrdma: Revert 586a0787ce35
  NFSv4: Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
  NFS: Clean up reset of the mirror accounting variables
  NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
  NFS: Fix an Oopsable condition in __nfs_pageio_add_request()
  SUNRPC: More fixes for backlog congestion
  SUNRPC: Fix Oops in xs_tcp_send_request() when transport is disconnected
  NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
  SUNRPC in case of backlog, hand free slots directly to waiting task
  pNFS/NFSv4: Remove redundant initialization of 'rd_size'
  NFS: fix an incorrect limit in filelayout_decode_layout()
  fs/nfs: Use fatal_signal_pending instead of signal_pending

3 years agoMerge tag 'sound-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 28 May 2021 18:47:50 +0000 (08:47 -1000)]
Merge tag 'sound-5.13-rc4' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A slightly high volume at this time due to pending ASoC fixes.

  While there are a few generic simple-card fixes for regressions, most
  of the changes are device-specific fixes: ASoC Intel SOF, codec
  clocks, other codec / platform fixes as well as usual HD-audio and
  USB-audio"

* tag 'sound-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (37 commits)
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 17 G8
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 15 G8
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook G8
  ALSA: hda/realtek: fix mute/micmute LEDs for HP 855 G8
  ALSA: hda/realtek: Chain in pop reduction fixup for ThinkStation P340
  ALSA: usb-audio: scarlett2: snd_scarlett_gen2_controls_create() can be static
  ALSA: hda/realtek: the bass speaker can't output sound on Yoga 9i
  ALSA: hda/realtek: Headphone volume is controlled by Front mixer
  ALSA: usb-audio: scarlett2: Improve driver startup messages
  ALSA: usb-audio: scarlett2: Fix device hang with ehci-pci
  ALSA: usb-audio: fix control-request direction
  ASoC: qcom: lpass-cpu: Use optional clk APIs
  ASoC: cs35l33: fix an error code in probe()
  ASoC: SOF: Intel: hda: don't send DAI_CONFIG IPC for older firmware
  ASoC: fsl: fix SND_SOC_IMX_RPMSG dependency
  ASoC: cs42l52: Minor tidy up of error paths
  ASoC: cs35l32: Add missing regmap use_single config
  ASoC: cs35l34: Add missing regmap use_single config
  ASoC: cs42l73: Add missing regmap use_single config
  ASoC: cs53l30: Add missing regmap use_single config
  ...

3 years agoMerge tag 'clang-features-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 28 May 2021 18:31:48 +0000 (08:31 -1000)]
Merge tag 'clang-features-v5.13-rc4' of git://git./linux/kernel/git/kees/linux

Pull clang feature fixes from Kees Cook:

 - Correctly pass stack frame size checking under LTO (Nick Desaulniers)

 - Avoid CFI mismatches by checking initcall_t types (Marco Elver)

* tag 'clang-features-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  Makefile: LTO: have linker check -Wframe-larger-than
  init: verify that function is initcall_t at compile-time

3 years agoMerge tag 'mips-fixes_5.13_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips...
Linus Torvalds [Fri, 28 May 2021 18:24:13 +0000 (08:24 -1000)]
Merge tag 'mips-fixes_5.13_1' of git://git./linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:

 - fix function/preempt trace hangs

 - a few build fixes

* tag 'mips-fixes_5.13_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER
  MIPS: ralink: export rt_sysc_membase for rt2880_wdt.c
  MIPS: launch.h: add include guard to prevent build errors
  MIPS: alchemy: xxs1500: add gpio-au1000.h header file

3 years agoMerge tag 'kvmarm-fixes-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Paolo Bonzini [Fri, 28 May 2021 17:02:03 +0000 (13:02 -0400)]
Merge tag 'kvmarm-fixes-5.13-2' of git://git./linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 5.13, take #2

- Another state update on exit to userspace fix
- Prevent the creation of mixed 32/64 VMs

3 years agoKVM: X86: Kill off ctxt->ud
Wanpeng Li [Fri, 28 May 2021 00:01:37 +0000 (17:01 -0700)]
KVM: X86: Kill off ctxt->ud

ctxt->ud is consumed only by x86_decode_insn(), we can kill it off by
passing emulation_type to x86_decode_insn() and dropping ctxt->ud
altogether. Tracking that info in ctxt for literally one call is silly.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <1622160097-37633-2-git-send-email-wanpengli@tencent.com>

3 years agoKVM: X86: Fix warning caused by stale emulation context
Wanpeng Li [Fri, 28 May 2021 00:01:36 +0000 (17:01 -0700)]
KVM: X86: Fix warning caused by stale emulation context

Reported by syzkaller:

  WARNING: CPU: 7 PID: 10526 at linux/arch/x86/kvm//x86.c:7621 x86_emulate_instruction+0x41b/0x510 [kvm]
  RIP: 0010:x86_emulate_instruction+0x41b/0x510 [kvm]
  Call Trace:
   kvm_mmu_page_fault+0x126/0x8f0 [kvm]
   vmx_handle_exit+0x11e/0x680 [kvm_intel]
   vcpu_enter_guest+0xd95/0x1b40 [kvm]
   kvm_arch_vcpu_ioctl_run+0x377/0x6a0 [kvm]
   kvm_vcpu_ioctl+0x389/0x630 [kvm]
   __x64_sys_ioctl+0x8e/0xd0
   do_syscall_64+0x3c/0xb0
   entry_SYSCALL_64_after_hwframe+0x44/0xae

Commit 4a1e10d5b5d8 ("KVM: x86: handle hardware breakpoints during emulation())
adds hardware breakpoints check before emulation the instruction and parts of
emulation context initialization, actually we don't have the EMULTYPE_NO_DECODE flag
here and the emulation context will not be reused. Commit c8848cee74ff ("KVM: x86:
set ctxt->have_exception in x86_decode_insn()) triggers the warning because it
catches the stale emulation context has #UD, however, it is not during instruction
decoding which should result in EMULATION_FAILED. This patch fixes it by moving
the second part emulation context initialization into init_emulate_ctxt() and
before hardware breakpoints check. The ctxt->ud will be dropped by a follow-up
patch.

syzkaller source: https://syzkaller.appspot.com/x/repro.c?x=134683fdd00000

Reported-by: syzbot+71271244f206d17f6441@syzkaller.appspotmail.com
Fixes: 4a1e10d5b5d8 (KVM: x86: handle hardware breakpoints during emulation)
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <1622160097-37633-1-git-send-email-wanpengli@tencent.com>

3 years agoKVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
Yuan Yao [Wed, 26 May 2021 06:38:28 +0000 (14:38 +0800)]
KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception

The kvm_get_linear_rip() handles x86/long mode cases well and has
better readability, __kvm_set_rflags() also use the paired
function kvm_is_linear_rip() to check the vcpu->arch.singlestep_rip
set in kvm_arch_vcpu_ioctl_set_guest_debug(), so change the
"CS.BASE + RIP" code in kvm_arch_vcpu_ioctl_set_guest_debug() and
handle_exception_nmi() to this one.

Signed-off-by: Yuan Yao <yuan.yao@intel.com>
Message-Id: <20210526063828.1173-1-yuan.yao@linux.intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoDocumentation: seccomp: Fix user notification documentation
Sargun Dhillon [Mon, 17 May 2021 19:39:05 +0000 (12:39 -0700)]
Documentation: seccomp: Fix user notification documentation

The documentation had some previously incorrect information about how
userspace notifications (and responses) were handled due to a change
from a previously proposed patchset.

Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210517193908.3113-2-sargun@sargun.me
3 years agoMAINTAINERS: adjust to removing i2c designware platform data
Lukas Bulwahn [Mon, 19 Apr 2021 06:18:09 +0000 (08:18 +0200)]
MAINTAINERS: adjust to removing i2c designware platform data

Commit 5a517b5bf687 ("i2c: designware: Get rid of legacy platform data")
removes ./include/linux/platform_data/i2c-designware.h, but misses to
adjust the SYNOPSYS DESIGNWARE I2C DRIVER section in MAINTAINERS.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches F: include/linux/platform_data/i2c-designware.h

Remove the file entry to this removed file as well.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoperf vendor events powerpc: Fix eventcode of power10 JSON events
Kajol Jain [Tue, 25 May 2021 06:37:23 +0000 (12:07 +0530)]
perf vendor events powerpc: Fix eventcode of power10 JSON events

Fixed the eventcode values in the power10 JSON event files to prepend
"0x" since these are hexadecimal values.

The patch also changes the event description of the PM_EXEC_STALL_LOAD_FINISH
and PM_EXEC_STALL_NTC_FLUSH event and move some events to correct files.

Fixes: 32daa5d7899e ("perf vendor events: Initial JSON/events list for power10 platform")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Paul A. Clarke <pc@us.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20210525063723.1191514-1-kjain@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoRevert "serial: 8250: 8250_omap: Fix possible interrupt storm"
Greg Kroah-Hartman [Fri, 28 May 2021 08:58:49 +0000 (10:58 +0200)]
Revert "serial: 8250: 8250_omap: Fix possible interrupt storm"

This reverts commit 31fae7c8b18c3f8029a2a5dce97a3182c1a167a0.

Tony writes:
I just noticed this causes the following regression in Linux
next when pressing a key on uart console after boot at least on
omap3. This seems to happen on serial_port_in(port, UART_RX) in
the quirk handling.

So let's drop this.

Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/YLCCJzkkB4N7LTQS@atomide.com
Fixes: 31fae7c8b18c ("serial: 8250: 8250_omap: Fix possible interrupt storm")
Reported-by: Tony Lindgren <tony@atomide.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoi2c: s3c2410: fix possible NULL pointer deref on read message after write
Krzysztof Kozlowski [Wed, 26 May 2021 12:39:37 +0000 (08:39 -0400)]
i2c: s3c2410: fix possible NULL pointer deref on read message after write

Interrupt handler processes multiple message write requests one after
another, till the driver message queue is drained.  However if driver
encounters a read message without preceding START, it stops the I2C
transfer as it is an invalid condition for the controller.  At least the
comment describes a requirement "the controller forces us to send a new
START when we change direction".  This stop results in clearing the
message queue (i2c->msg = NULL).

The code however immediately jumped back to label "retry_write" which
dereferenced the "i2c->msg" making it a possible NULL pointer
dereference.

The Coverity analysis:
1. Condition !is_msgend(i2c), taking false branch.
   if (!is_msgend(i2c)) {

2. Condition !is_lastmsg(i2c), taking true branch.
   } else if (!is_lastmsg(i2c)) {

3. Condition i2c->msg->flags & 1, taking true branch.
   if (i2c->msg->flags & I2C_M_RD) {

4. write_zero_model: Passing i2c to s3c24xx_i2c_stop, which sets i2c->msg to NULL.
   s3c24xx_i2c_stop(i2c, -EINVAL);

5. Jumping to label retry_write.
   goto retry_write;

6. var_deref_model: Passing i2c to is_msgend, which dereferences null i2c->msg.
   if (!is_msgend(i2c)) {"

All previous calls to s3c24xx_i2c_stop() in this interrupt service
routine are followed by jumping to end of function (acknowledging
the interrupt and returning).  This seems a reasonable choice also here
since message buffer was entirely emptied.

Addresses-Coverity: Explicit null dereferenced
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
Qii Wang [Thu, 27 May 2021 12:04:04 +0000 (20:04 +0800)]
i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset

The i2c controller driver do dma reset after transfer timeout,
but sometimes dma reset will trigger an unexpected DMA_ERR irq.
It will cause the i2c controller to continuously send interrupts
to the system and cause soft lock-up. So we need to disable i2c
start_en and clear intr_stat to stop i2c controller before dma
reset when transfer timeout.

Fixes: aafced673c06("i2c: mediatek: move dma reset before i2c reset")
Signed-off-by: Qii Wang <qii.wang@mediatek.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoMerge tag 'drm-intel-fixes-2021-05-27' of ssh://git.freedesktop.org/git/drm/drm-intel...
Dave Airlie [Fri, 28 May 2021 03:28:18 +0000 (13:28 +1000)]
Merge tag 'drm-intel-fixes-2021-05-27' of ssh://git.freedesktop.org/git/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.13-rc4:
- Re-enable LTTPR non-transparent LT mode for DPCD_REV<1.4

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/875yz4bnmj.fsf@intel.com
3 years agoMerge tag 'drm-misc-fixes-2021-05-27' of ssh://git.freedesktop.org/git/drm/drm-misc...
Dave Airlie [Fri, 28 May 2021 03:24:25 +0000 (13:24 +1000)]
Merge tag 'drm-misc-fixes-2021-05-27' of ssh://git.freedesktop.org/git/drm/drm-misc into drm-fixes

A fix in meson for a crash at shutdown and one for TTM to prevent
irrelevant swapout

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527120828.3w7f53krzkslc4ii@gilmour
3 years agoperf stat: Fix error check for bpf_program__attach
Namhyung Kim [Thu, 27 May 2021 22:00:52 +0000 (15:00 -0700)]
perf stat: Fix error check for bpf_program__attach

It seems the bpf_program__attach() returns a negative error code instead
of a NULL pointer in case of error.

Fixes: 7fac83aaf2ee ("perf stat: Introduce 'bperf' to share hardware PMCs with BPF")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Link: http://lore.kernel.org/lkml/20210527220052.1657578-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge tag 'amd-drm-fixes-5.13-2021-05-26' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Thu, 27 May 2021 23:18:04 +0000 (09:18 +1000)]
Merge tag 'amd-drm-fixes-5.13-2021-05-26' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.13-2021-05-26:

amdgpu:
- MultiGPU fan fix
- VCN powergating fixes

amdkfd:
- Fix SDMA register offset error

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527031831.4057-1-alexander.deucher@amd.com
3 years agoMerge branch 'for-5.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis...
Linus Torvalds [Thu, 27 May 2021 22:01:26 +0000 (12:01 -1000)]
Merge branch 'for-5.13-fixes' of git://git./linux/kernel/git/dennis/percpu

Pull percpu fixes from Dennis Zhou:
 "This contains a cleanup to lib/percpu-refcount.c and an update to the
  MAINTAINERS file to more formally take over support for lib/percpu*"

* 'for-5.13-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
  MAINTAINERS: Add lib/percpu* as part of percpu entry
  percpu_ref: Don't opencode percpu_ref_is_dying

3 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Thu, 27 May 2021 21:58:26 +0000 (11:58 -1000)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Don't use contiguous or block mappings for the linear map when KFENCE
   is enabled.

 - Fix link in the arch_counter_enforce_ordering() comment.

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: don't use CON and BLK mapping if KFENCE is enabled
  arm64: Fix stale link in the arch_counter_enforce_ordering() comment

3 years agoMerge tag 'for-5.13/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 27 May 2021 21:54:36 +0000 (11:54 -1000)]
Merge tag 'for-5.13/dm-fixes-2' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix DM verity target's 'require_signatures' module_param permissions.

 - Revert DM snapshot fix from v5.13-rc3 and then properly fix crash
   when an origin has no snapshots. This allows only the proper fix to
   go to stable@ (since the original fix was successfully dropped).

* tag 'for-5.13/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm snapshot: properly fix a crash when an origin has no snapshots
  dm snapshot: revert "fix a crash when an origin has no snapshots"
  dm verity: fix require_signatures module_param permissions

3 years agocifs: change format of CIFS_FULL_KEY_DUMP ioctl
Aurelien Aptel [Fri, 21 May 2021 15:19:28 +0000 (17:19 +0200)]
cifs: change format of CIFS_FULL_KEY_DUMP ioctl

Make CIFS_FULL_KEY_DUMP ioctl able to return variable-length keys.

* userspace needs to pass the struct size along with optional
  session_id and some space at the end to store keys
* if there is enough space kernel returns keys in the extra space and
  sets the length of each key via xyz_key_length fields

This also fixes the build error for get_user() on ARM.

Sample program:

#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>

struct smb3_full_key_debug_info {
        uint32_t   in_size;
        uint64_t   session_id;
        uint16_t   cipher_type;
        uint8_t    session_key_length;
        uint8_t    server_in_key_length;
        uint8_t    server_out_key_length;
        uint8_t    data[];
        /*
         * return this struct with the keys appended at the end:
         * uint8_t session_key[session_key_length];
         * uint8_t server_in_key[server_in_key_length];
         * uint8_t server_out_key[server_out_key_length];
         */
} __attribute__((packed));

#define CIFS_IOCTL_MAGIC 0xCF
#define CIFS_DUMP_FULL_KEY _IOWR(CIFS_IOCTL_MAGIC, 10, struct smb3_full_key_debug_info)

void dump(const void *p, size_t len) {
        const char *hex = "0123456789ABCDEF";
        const uint8_t *b = p;
        for (int i = 0; i < len; i++)
                printf("%c%c ", hex[(b[i]>>4)&0xf], hex[b[i]&0xf]);
        putchar('\n');
}

int main(int argc, char **argv)
{
        struct smb3_full_key_debug_info *keys;
        uint8_t buf[sizeof(*keys)+1024] = {0};
        size_t off = 0;
        int fd, rc;

        keys = (struct smb3_full_key_debug_info *)&buf;
        keys->in_size = sizeof(buf);

        fd = open(argv[1], O_RDONLY);
        if (fd < 0)
                perror("open"), exit(1);

        rc = ioctl(fd, CIFS_DUMP_FULL_KEY, keys);
        if (rc < 0)
                perror("ioctl"), exit(1);

        printf("SessionId      ");
        dump(&keys->session_id, 8);
        printf("Cipher         %04x\n", keys->cipher_type);

        printf("SessionKey     ");
        dump(keys->data+off, keys->session_key_length);
        off += keys->session_key_length;

        printf("ServerIn Key   ");
        dump(keys->data+off, keys->server_in_key_length);
        off += keys->server_in_key_length;

        printf("ServerOut Key  ");
        dump(keys->data+off, keys->server_out_key_length);

        return 0;
}

Usage:

$ gcc -o dumpkeys dumpkeys.c

Against Windows Server 2020 preview (with AES-256-GCM support):

# mount.cifs //$ip/test /mnt -o "username=administrator,password=foo,vers=3.0,seal"
# ./dumpkeys /mnt/somefile
SessionId      0D 00 00 00 00 0C 00 00
Cipher         0002
SessionKey     AB CD CC 0D E4 15 05 0C 6F 3C 92 90 19 F3 0D 25
ServerIn Key   73 C6 6A C8 6B 08 CF A2 CB 8E A5 7D 10 D1 5B DC
ServerOut Key  6D 7E 2B A1 71 9D D7 2B 94 7B BA C4 F0 A5 A4 F8
# umount /mnt

With 256 bit keys:

# echo 1 > /sys/module/cifs/parameters/require_gcm_256
# mount.cifs //$ip/test /mnt -o "username=administrator,password=foo,vers=3.11,seal"
# ./dumpkeys /mnt/somefile
SessionId      09 00 00 00 00 0C 00 00
Cipher         0004
SessionKey     93 F5 82 3B 2F B7 2A 50 0B B9 BA 26 FB 8C 8B 03
ServerIn Key   6C 6A 89 B2 CB 7B 78 E8 04 93 37 DA 22 53 47 DF B3 2C 5F 02 26 70 43 DB 8D 33 7B DC 66 D3 75 A9
ServerOut Key  04 11 AA D7 52 C7 A8 0F ED E3 93 3A 65 FE 03 AD 3F 63 03 01 2B C0 1B D7 D7 E5 52 19 7F CC 46 B4

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agoi2c: i801: Don't generate an interrupt on bus reset
Jean Delvare [Tue, 25 May 2021 15:03:36 +0000 (17:03 +0200)]
i2c: i801: Don't generate an interrupt on bus reset

Now that the i2c-i801 driver supports interrupts, setting the KILL bit
in a attempt to recover from a timed out transaction triggers an
interrupt. Unfortunately, the interrupt handler (i801_isr) is not
prepared for this situation and will try to process the interrupt as
if it was signaling the end of a successful transaction. In the case
of a block transaction, this can result in an out-of-range memory
access.

This condition was reproduced several times by syzbot:
https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e
https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e
https://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e
https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb
https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a
https://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79

So disable interrupts while trying to reset the bus. Interrupts will
be enabled again for the following transaction.

Fixes: 636752bcb517 ("i2c-i801: Enable IRQ for SMBus transactions")
Reported-by: syzbot+b4d3fd1dfd53e90afd79@syzkaller.appspotmail.com
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: mpc: implement erratum A-004447 workaround
Chris Packham [Tue, 11 May 2021 21:20:52 +0000 (09:20 +1200)]
i2c: mpc: implement erratum A-004447 workaround

The P2040/P2041 has an erratum where the normal i2c recovery mechanism
does not work. Implement the alternative recovery mechanism documented
in the P2040 Chip Errata Rev Q.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agopowerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
Chris Packham [Tue, 11 May 2021 21:20:51 +0000 (09:20 +1200)]
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers

The i2c controllers on the P1010 have an erratum where the documented
scheme for i2c bus recovery will not work (A-004447). A different
mechanism is needed which is documented in the P1010 Chip Errata Rev L.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agopowerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
Chris Packham [Tue, 11 May 2021 21:20:50 +0000 (09:20 +1200)]
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers

The i2c controllers on the P2040/P2041 have an erratum where the
documented scheme for i2c bus recovery will not work (A-004447). A
different mechanism is needed which is documented in the P2040 Chip
Errata Rev Q (latest available at the time of writing).

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agodt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag
Chris Packham [Tue, 11 May 2021 21:20:49 +0000 (09:20 +1200)]
dt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag

Document the fsl,i2c-erratum-a004447 flag which indicates the presence
of an i2c erratum on some QorIQ SoCs.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
Lee Jones [Thu, 20 May 2021 19:01:03 +0000 (20:01 +0100)]
i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-stm32f4.c:321: warning: expecting prototype for stm32f4_i2c_write_ byte()(). Prototype was for stm32f4_i2c_write_byte() instead

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-st: Fix copy/paste function misnaming issues
Lee Jones [Thu, 20 May 2021 19:01:02 +0000 (20:01 +0100)]
i2c: busses: i2c-st: Fix copy/paste function misnaming issues

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-st.c:531: warning: expecting prototype for st_i2c_handle_write(). Prototype was for st_i2c_handle_read() instead
 drivers/i2c/busses/i2c-st.c:566: warning: expecting prototype for st_i2c_isr(). Prototype was for st_i2c_isr_thread() instead

Fix the "enmpty" typo while here.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
Lee Jones [Thu, 20 May 2021 19:01:00 +0000 (20:01 +0100)]
i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-pnx.c:147: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_start'
 drivers/i2c/busses/i2c-pnx.c:147: warning: Excess function parameter 'adap' description in 'i2c_pnx_start'
 drivers/i2c/busses/i2c-pnx.c:202: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_stop'
 drivers/i2c/busses/i2c-pnx.c:202: warning: Excess function parameter 'adap' description in 'i2c_pnx_stop'
 drivers/i2c/busses/i2c-pnx.c:231: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_master_xmit'
 drivers/i2c/busses/i2c-pnx.c:231: warning: Excess function parameter 'adap' description in 'i2c_pnx_master_xmit'
 drivers/i2c/busses/i2c-pnx.c:301: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_master_rcv'
 drivers/i2c/busses/i2c-pnx.c:301: warning: Excess function parameter 'adap' description in 'i2c_pnx_master_rcv'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-ocores: Place the expected function names into the documentation...
Lee Jones [Thu, 20 May 2021 19:00:59 +0000 (20:00 +0100)]
i2c: busses: i2c-ocores: Place the expected function names into the documentation headers

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-ocores.c:253: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 drivers/i2c/busses/i2c-ocores.c:267: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 drivers/i2c/busses/i2c-ocores.c:299: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
 drivers/i2c/busses/i2c-ocores.c:347: warning: expecting prototype for It handles an IRQ(). Prototype was for ocores_process_polling() instead

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
Lee Jones [Thu, 20 May 2021 19:00:57 +0000 (20:00 +0100)]
i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-eg20t.c:151: warning: bad line:                          PCH i2c controller
 drivers/i2c/busses/i2c-eg20t.c:369: warning: Function parameter or member 'msgs' not described in 'pch_i2c_writebytes'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
Lee Jones [Thu, 20 May 2021 19:00:56 +0000 (20:00 +0100)]
i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-designware-master.c:176: warning: expecting prototype for i2c_dw_init(). Prototype was for i2c_dw_init_master() instead

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'
Lee Jones [Thu, 20 May 2021 19:00:55 +0000 (20:00 +0100)]
i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-cadence.c:157: warning: expecting prototype for enum cdns_i2c_slave_mode. Prototype was for enum cdns_i2c_slave_state instead

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
Lee Jones [Thu, 20 May 2021 19:00:52 +0000 (20:00 +0100)]
i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-ali1563.c:24: warning: expecting prototype for i2c(). Prototype was for ALI1563_MAX_TIMEOUT() instead

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers
Lee Jones [Thu, 20 May 2021 19:00:51 +0000 (20:00 +0100)]
i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/muxes/i2c-arb-gpio-challenge.c:43: warning: Function parameter or member 'muxc' not described in 'i2c_arbitrator_select'
 drivers/i2c/muxes/i2c-arb-gpio-challenge.c:43: warning: Function parameter or member 'chan' not described in 'i2c_arbitrator_select'
 drivers/i2c/muxes/i2c-arb-gpio-challenge.c:86: warning: Function parameter or member 'muxc' not described in 'i2c_arbitrator_deselect'
 drivers/i2c/muxes/i2c-arb-gpio-challenge.c:86: warning: Function parameter or member 'chan' not described in 'i2c_arbitrator_deselect'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoi2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
Lee Jones [Thu, 20 May 2021 19:00:50 +0000 (20:00 +0100)]
i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'

Fixes the following W=1 kernel build warning(s):

 drivers/i2c/busses/i2c-nomadik.c:184: warning: Function parameter or member 'timeout' not described in 'nmk_i2c_dev'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agocifs: fix string declarations and assignments in tracepoints
Shyam Prasad N [Fri, 21 May 2021 06:35:52 +0000 (06:35 +0000)]
cifs: fix string declarations and assignments in tracepoints

We missed using the variable length string macros in several
tracepoints. Fixed them in this change.

There's probably more useful macros that we can use to print
others like flags etc. But I'll submit sepawrate patches for
those at a future date.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Cc: <stable@vger.kernel.org> # v5.12
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agocifs: set server->cipher_type to AES-128-CCM for SMB3.0
Aurelien Aptel [Fri, 21 May 2021 15:19:27 +0000 (17:19 +0200)]
cifs: set server->cipher_type to AES-128-CCM for SMB3.0

SMB3.0 doesn't have encryption negotiate context but simply uses
the SMB2_GLOBAL_CAP_ENCRYPTION flag.

When that flag is present in the neg response cifs.ko uses AES-128-CCM
which is the only cipher available in this context.

cipher_type was set to the server cipher only when parsing encryption
negotiate context (SMB3.1.1).

For SMB3.0 it was set to 0. This means cipher_type value can be 0 or 1
for AES-128-CCM.

Fix this by checking for SMB3.0 and encryption capability and setting
cipher_type appropriately.

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
3 years agoMerge tag 'acpi-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Thu, 27 May 2021 18:39:05 +0000 (08:39 -1000)]
Merge tag 'acpi-5.13-rc4' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a recent ACPI power management regression causing boot issues to
  occur on some systems due to attempts to turn off ACPI power resources
  that are already off (which should work according to the ACPI
  specification)"

* tag 'acpi-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: power: Refine turning off unused power resources

3 years agoMerge tag 'iommu-fixes-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 27 May 2021 18:06:36 +0000 (08:06 -1000)]
Merge tag 'iommu-fixes-v5.13-rc3' of git://git./linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:

 - Important fix for the AMD IOMMU driver in the recently added
   page-specific invalidation code to fix a calculation.

 - Fix a NULL-ptr dereference in the AMD IOMMU driver when a device
   switches domain types.

 - Fixes for the Intel VT-d driver to check for allocation failure and
   do correct cleanup.

 - Another fix for Intel VT-d to not allow supervisor page requests from
   devices when using second level page translation.

 - Add a MODULE_DEVICE_TABLE to the VIRTIO IOMMU driver

* tag 'iommu-fixes-v5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/vt-d: Fix sysfs leak in alloc_iommu()
  iommu/vt-d: Use user privilege for RID2PASID translation
  iommu/vt-d: Check for allocation failure in aux_detach_device()
  iommu/virtio: Add missing MODULE_DEVICE_TABLE
  iommu/amd: Fix wrong parentheses on page-specific invalidations
  iommu/amd: Clear DMA ops when switching domain

3 years agoperf debug: Move debug initialization earlier
Ian Rogers [Wed, 19 May 2021 16:44:47 +0000 (09:44 -0700)]
perf debug: Move debug initialization earlier

This avoids segfaults during option handlers that use pr_err. For
example, "perf --debug nopager list" segfaults before this change.

Fixes: 8abceacff87d (perf debug: Add debug_set_file function)
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210519164447.2672030-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoafs: Fix the nlink handling of dir-over-dir rename
David Howells [Thu, 27 May 2021 10:24:33 +0000 (11:24 +0100)]
afs: Fix the nlink handling of dir-over-dir rename

Fix rename of one directory over another such that the nlink on the deleted
directory is cleared to 0 rather than being decremented to 1.

This was causing the generic/035 xfstest to fail.

Fixes: e49c7b2f6de7 ("afs: Build an abstraction around an "operation" concept")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/162194384460.3999479.7605572278074191079.stgit@warthog.procyon.org.uk/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoxfs: bunmapi has unnecessary AG lock ordering issues
Dave Chinner [Thu, 27 May 2021 15:11:01 +0000 (08:11 -0700)]
xfs: bunmapi has unnecessary AG lock ordering issues

large directory block size operations are assert failing because
xfs_bunmapi() is not completely removing fragmented directory blocks
like so:

XFS: Assertion failed: done, file: fs/xfs/libxfs/xfs_dir2.c, line: 677
....
Call Trace:
 xfs_dir2_shrink_inode+0x1a8/0x210
 xfs_dir2_block_to_sf+0x2ae/0x410
 xfs_dir2_block_removename+0x21a/0x280
 xfs_dir_removename+0x195/0x1d0
 xfs_rename+0xb79/0xc50
 ? avc_has_perm+0x8d/0x1a0
 ? avc_has_perm_noaudit+0x9a/0x120
 xfs_vn_rename+0xdb/0x150
 vfs_rename+0x719/0xb50
 ? __lookup_hash+0x6a/0xa0
 do_renameat2+0x413/0x5e0
 __x64_sys_rename+0x45/0x50
 do_syscall_64+0x3a/0x70
 entry_SYSCALL_64_after_hwframe+0x44/0xae

We are aborting the bunmapi() pass because of this specific chunk of
code:

                /*
                 * Make sure we don't touch multiple AGF headers out of order
                 * in a single transaction, as that could cause AB-BA deadlocks.
                 */
                if (!wasdel && !isrt) {
                        agno = XFS_FSB_TO_AGNO(mp, del.br_startblock);
                        if (prev_agno != NULLAGNUMBER && prev_agno > agno)
                                break;
                        prev_agno = agno;
                }

This is designed to prevent deadlocks in AGF locking when freeing
multiple extents by ensuring that we only ever lock in increasing
AG number order. Unfortunately, this also violates the "bunmapi will
always succeed" semantic that some high level callers depend on,
such as xfs_dir2_shrink_inode(), xfs_da_shrink_inode() and
xfs_inactive_symlink_rmt().

This AG lock ordering was introduced back in 2017 to fix deadlocks
triggered by generic/299 as reported here:

https://lore.kernel.org/linux-xfs/800468eb-3ded-9166-20a4-047de8018582@gmail.com/

This codebase is old enough that it was before we were defering all
AG based extent freeing from within xfs_bunmapi(). THat is, we never
actually lock AGs in xfs_bunmapi() any more - every non-rt based
extent free is added to the defer ops list, as is all BMBT block
freeing. And RT extents are not RT based, so there's no lock
ordering issues associated with them.

Hence this AGF lock ordering code is both broken and dead. Let's
just remove it so that the large directory block code works reliably
again.

Tested against xfs/538 and generic/299 which is the original test
that exposed the deadlocks that this code fixed.

Fixes: 5b094d6dac04 ("xfs: fix multi-AG deadlock in xfs_bunmapi")
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
3 years agoxfs: btree format inode forks can have zero extents
Dave Chinner [Thu, 27 May 2021 02:57:42 +0000 (19:57 -0700)]
xfs: btree format inode forks can have zero extents

xfs/538 is assert failing with this trace when testing with
directory block sizes of 64kB:

XFS: Assertion failed: !xfs_need_iread_extents(ifp), file: fs/xfs/libxfs/xfs_bmap.c, line: 608
....
Call Trace:
 xfs_bmap_btree_to_extents+0x2a9/0x470
 ? kmem_cache_alloc+0xe7/0x220
 __xfs_bunmapi+0x4ca/0xdf0
 xfs_bunmapi+0x1a/0x30
 xfs_dir2_shrink_inode+0x71/0x210
 xfs_dir2_block_to_sf+0x2ae/0x410
 xfs_dir2_block_removename+0x21a/0x280
 xfs_dir_removename+0x195/0x1d0
 xfs_remove+0x244/0x460
 xfs_vn_unlink+0x53/0xa0
 ? selinux_inode_unlink+0x13/0x20
 vfs_unlink+0x117/0x220
 do_unlinkat+0x1a2/0x2d0
 __x64_sys_unlink+0x42/0x60
 do_syscall_64+0x3a/0x70
 entry_SYSCALL_64_after_hwframe+0x44/0xae

This is a check to ensure that the extents have been read into
memory before we are doing a ifork btree manipulation. This assert
is bogus in the above case.

We have a fragmented directory block that has more extents in it
than can fit in extent format, so the inode data fork is in btree
format. xfs_dir2_shrink_inode() asks to remove all remaining 16
filesystem blocks from the inode so it can convert to short form,
and __xfs_bunmapi() removes all the extents. We now have a data fork
in btree format but have zero extents in the fork. This incorrectly
trips the xfs_need_iread_extents() assert because it assumes that an
empty extent btree means the extent tree has not been read into
memory yet. This is clearly not the case with xfs_bunmapi(), as it
has an explicit call to xfs_iread_extents() in it to pull the
extents into memory before it starts unmapping.

Also, the assert directly after this bogus one is:

ASSERT(ifp->if_format == XFS_DINODE_FMT_BTREE);

Which covers the context in which it is legal to call
xfs_bmap_btree_to_extents just fine. Hence we should just remove the
bogus assert as it is clearly wrong and causes a regression.

The returns the test behaviour to the pre-existing assert failure in
xfs_dir2_shrink_inode() that indicates xfs_bunmapi() has failed to
remove all the extents in the range it was asked to unmap.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
3 years agoiommu/vt-d: Fix sysfs leak in alloc_iommu()
Rolf Eike Beer [Tue, 25 May 2021 07:08:02 +0000 (15:08 +0800)]
iommu/vt-d: Fix sysfs leak in alloc_iommu()

iommu_device_sysfs_add() is called before, so is has to be cleaned on subsequent
errors.

Fixes: 39ab9555c2411 ("iommu: Add sysfs bindings for struct iommu_device")
Cc: stable@vger.kernel.org # 4.11.x
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/17411490.HIIP88n32C@mobilepool36.emlix.com
Link: https://lore.kernel.org/r/20210525070802.361755-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
3 years agoio_uring: fix data race to avoid potential NULL-deref
Marco Elver [Thu, 27 May 2021 09:25:48 +0000 (11:25 +0200)]
io_uring: fix data race to avoid potential NULL-deref

Commit ba5ef6dc8a82 ("io_uring: fortify tctx/io_wq cleanup") introduced
setting tctx->io_wq to NULL a bit earlier. This has caused KCSAN to
detect a data race between accesses to tctx->io_wq:

  write to 0xffff88811d8df330 of 8 bytes by task 3709 on cpu 1:
   io_uring_clean_tctx                  fs/io_uring.c:9042 [inline]
   __io_uring_cancel                    fs/io_uring.c:9136
   io_uring_files_cancel                include/linux/io_uring.h:16 [inline]
   do_exit                              kernel/exit.c:781
   do_group_exit                        kernel/exit.c:923
   get_signal                           kernel/signal.c:2835
   arch_do_signal_or_restart            arch/x86/kernel/signal.c:789
   handle_signal_work                   kernel/entry/common.c:147 [inline]
   exit_to_user_mode_loop               kernel/entry/common.c:171 [inline]
   ...
  read to 0xffff88811d8df330 of 8 bytes by task 6412 on cpu 0:
   io_uring_try_cancel_iowq             fs/io_uring.c:8911 [inline]
   io_uring_try_cancel_requests         fs/io_uring.c:8933
   io_ring_exit_work                    fs/io_uring.c:8736
   process_one_work                     kernel/workqueue.c:2276
   ...

With the config used, KCSAN only reports data races with value changes:
this implies that in the case here we also know that tctx->io_wq was
non-NULL. Therefore, depending on interleaving, we may end up with:

              [CPU 0]                 |        [CPU 1]
  io_uring_try_cancel_iowq()          | io_uring_clean_tctx()
    if (!tctx->io_wq) // false        |   ...
    ...                               |   tctx->io_wq = NULL
    io_wq_cancel_cb(tctx->io_wq, ...) |   ...
      -> NULL-deref                   |

Note: It is likely that thus far we've gotten lucky and the compiler
optimizes the double-read into a single read into a register -- but this
is never guaranteed, and can easily change with a different config!

Fix the data race by restoring the previous behaviour, where both
setting io_wq to NULL and put of the wq are _serialized_ after
concurrent io_uring_try_cancel_iowq() via acquisition of the uring_lock
and removal of the node in io_uring_del_task_file().

Fixes: ba5ef6dc8a82 ("io_uring: fortify tctx/io_wq cleanup")
Suggested-by: Pavel Begunkov <asml.silence@gmail.com>
Reported-by: syzbot+bf2b3d0435b9b728946c@syzkaller.appspotmail.com
Signed-off-by: Marco Elver <elver@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20210527092547.2656514-1-elver@google.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoMerge tag 'nvme-5.13-2021-05-27' of git://git.infradead.org/nvme into block-5.13
Jens Axboe [Thu, 27 May 2021 13:38:12 +0000 (07:38 -0600)]
Merge tag 'nvme-5.13-2021-05-27' of git://git.infradead.org/nvme into block-5.13

Pull NVMe fixes from Christoph:

"nvme fixes for Linux 5.13

 - fix a memory leak in nvme_cdev_add (Guoqing Jiang)
 - fix inline data size comparison in nvmet_tcp_queue_response (Hou Pu)
 - fix false keep-alive timeout when a controller is torn down
   (Sagi Grimberg)
 - fix a nvme-tcp Kconfig dependency (Sagi Grimberg)
 - short-circuit reconnect retries for FC (Hannes Reinecke)
 - decode host pathing error for connect (Hannes Reinecke)"

* tag 'nvme-5.13-2021-05-27' of git://git.infradead.org/nvme:
  nvmet: fix false keep-alive timeout when a controller is torn down
  nvmet-tcp: fix inline data size comparison in nvmet_tcp_queue_response
  nvme-tcp: remove incorrect Kconfig dep in BLK_DEV_NVME
  nvme-fabrics: decode host pathing error for connect
  nvme-fc: short-circuit reconnect retries
  nvme: fix potential memory leaks in nvme_cdev_add

3 years agoserial: 8250_pci: handle FL_NOIRQ board flag
Christian Gmeiner [Thu, 27 May 2021 09:54:40 +0000 (11:54 +0200)]
serial: 8250_pci: handle FL_NOIRQ board flag

In commit 8428413b1d14 ("serial: 8250_pci: Implement MSI(-X) support")
the way the irq gets allocated was changed. With that change the
handling FL_NOIRQ got lost. Restore the old behaviour.

Fixes: 8428413b1d14 ("serial: 8250_pci: Implement MSI(-X) support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Link: https://lore.kernel.org/r/20210527095529.26281-1-christian.gmeiner@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agonfs: Remove trailing semicolon in macros
Huilong Deng [Fri, 21 May 2021 14:07:37 +0000 (22:07 +0800)]
nfs: Remove trailing semicolon in macros

Macros should not use a trailing semicolon.

Signed-off-by: Huilong Deng <denghuilong@cdjrlc.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
3 years agomei: request autosuspend after sending rx flow control
Alexander Usyskin [Wed, 26 May 2021 19:33:34 +0000 (22:33 +0300)]
mei: request autosuspend after sending rx flow control

A rx flow control waiting in the control queue may block autosuspend.
Re-request autosuspend after flow control been sent to unblock
the transition to the low power state.

Cc: <stable@vger.kernel.org>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20210526193334.445759-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMerge tag 'icc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov...
Greg Kroah-Hartman [Thu, 27 May 2021 13:06:33 +0000 (15:06 +0200)]
Merge tag 'icc-5.13-rc4' of git://git./linux/kernel/git/djakov/icc into char-misc-linus

Grorgi writes:

interconnect fixes for v5.13

This contains two tiny driver fixes:

- bcm-voter: Add missing MODULE_DEVICE_TABLE
- bcm-voter: Add a missing of_node_put()

Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
  interconnect: qcom: Add missing MODULE_DEVICE_TABLE
  interconnect: qcom: bcm-voter: add a missing of_node_put()

3 years agoKVM: x86/mmu: Fix comment mentioning skip_4k
David Matlack [Wed, 26 May 2021 16:32:27 +0000 (16:32 +0000)]
KVM: x86/mmu: Fix comment mentioning skip_4k

This comment was left over from a previous version of the patch that
introduced wrprot_gfn_range, when skip_4k was passed in instead of
min_level.

Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20210526163227.3113557-1-dmatlack@google.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>