Vadim Pasternak [Mon, 7 May 2018 06:48:53 +0000 (06:48 +0000)]
platform/x86: mlx-platform: Add LED platform driver activation
Add LED platform driver activation from mlx-platform. This LED driver uses
the same regmap infrastructure as others Mellanox platform drivers, so LED
specific registers description is added.
System LED configuration depends on system type. To support all the
relevant types per system type LED descriptions are defined for passing
to LED platform driver.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Vadim Pasternak [Mon, 7 May 2018 06:48:52 +0000 (06:48 +0000)]
platform/mellanox: Add new ODM system types to mlx-platform
Add new ODM system types, matched according to DMI_BOARD_NAME. The
supported ODM Ids are: VMOD0001, VMOD0002, VMOD0003, VMOD0004, VMOD0005.
Patch does not introduce new systems, but allows to ODM companies to set
DMI_BOARD_VENDOR and DMI_PRODUCT_NAME on their own. It assumes that ODM
company can't change DMI_BOARD_NAME.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Vadim Pasternak [Mon, 7 May 2018 06:48:51 +0000 (06:48 +0000)]
platform/mellanox: mlxreg-hotplug: add extra cycle for hotplug work queue
Add extra cycle for hotplug work queue to handle the case when a signal is
It adds missed logic for signal acknowledge, by adding an extra run for
received, but no specific signal assertion is detected. Such case
theoretically can happen for example in case several units are removed or
inserted at the same time. In this situation acknowledge for some signal
can be missed at signal top aggreagation status level. The extra run will
allow to handler to acknowledge the missed signal.
The interrupt handling flow performs the next steps:
(1)
Enter mlxreg_hotplug_work_handler due to signal assertion.
Aggregation status register is changed for example from 0xff to 0xfd
(event signal group related to bit 1).
(2)
Mask aggregation interrupts, read aggregation status register and save it
(0xfd) in aggr_cache, then traverse down to handle signal from groups
related to the changed bit.
(3)
Read and mask group related signal.
Acknowledge and unmask group related signal (acknowledge should clear
aggregation status register from 0xfd back to 0xff).
(4)
Re-schedule work queue for the immediate execution.
(5)
Enter mlxreg_hotplug_work_handler due to re-scheduling.
Aggregation status is changed from previous 0xfd to 0xff.
Go over steps (2) - (5) and in case no new signal assertion
is detected - unmask aggregation interrupts.
The possible race could happen in case new signal from the same group is
asserted after step (3) and prior step (5). In such case aggregation
status will change back from 0xff to 0xfd and the value read from the
aggregation status register will be the same as a value saved in
aggr_cache. As a result the handler will not traverse down and signal
will stay unhandled.
Example of faulty flow:
The signal routing flow is as following (f.e. for of FANi removing):
- FAN status and event registers related bit is changed;
-- intermediate aggregation status register is changed;
--- top aggregation status register is changed;
---- interrupt routed to CPU and interrupt handler is invoked.
When interrupt handler is invoked it follows the next simple logic (f.e
FAN3 is removed):
(a1) mask top aggregation interrupt mask register;
(a2) read top aggregation interrupt status register and test to which
underling group belongs a signal (FANs in this case and is changed
from 0xff to 0xfb and 0xfb is saved as a last status value);
(b1) mask FANs interrupt mask register;
(b2) read FANs status register and test which FAN has been changed
FAN3 in this example);
(c1) perform relevant action;
<--------------- (FAN2 is removed at this point)
(b3) clear FANs interrupt event register to acknowledge FAN3 signal;
(b4) unmask FANs interrupt mask register
(a3) unmask top aggregation interrupt mask register;
An interrupt handler is invoked, since FAN2 interrupt is not acknowledge.
It should set top aggregation interrupt status register bit 6 (0xfb).
In step (a2)
(a2) read top aggregation interrupt and comparing it with saved value
does not show change (same 0xfb) and after (a2) execution jumps to
(a3) and signal leaved unhandled
The fix will enforce handler to traverse down in case the signal is
received, but signal assertion is not detected.
Fixes:
304887041d95 ("platform/x86: Introduce support for Mellanox hotplug driver")
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
dylanchu [Mon, 28 May 2018 11:44:48 +0000 (19:44 +0800)]
platform/x86: ideapad-laptop: Add E42-80 to no_hw_rfkill
Lenovo Zhaoyang E42-80 is another Lenovo model without a hw rfkill switch,
resulting in wifi always reported as hard blocked.
Add the model to the list of models without rfkill switch.
Signed-off-by: dylanchu <chdy.uuid@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Hans de Goede [Wed, 30 May 2018 10:43:41 +0000 (12:43 +0200)]
platform/x86: silead_dmi: Add touchscreen info for the Onda V891w tablet
Add touchscreen info for the Onda V891w 8.9" windows tablet.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Hans de Goede [Wed, 30 May 2018 10:43:40 +0000 (12:43 +0200)]
platform/x86: silead_dmi: Add info for the PoV mobii TAB-P800W (v2.0)
This commit adds the necessary device-properties to make the touchscreen
on Point of View mobii TAB-P800W (v2.0) tablets work.
Note that we already have an entry for the Point of View mobii
TAB-P800W (v2.1), that version uses a different digitizer and different
firmware, so the v2.0 version needs its own entry.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Hans de Goede [Wed, 30 May 2018 10:43:39 +0000 (12:43 +0200)]
platform/x86: silead_dmi: Add touchscreen info for the Jumper EZpad 6 Pro
Add touchscreen info for the Jumper EZpad 6 Pro.
Cc: zy <574249312@qq.com>
Reported-and-tested-by: zy <574249312@qq.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
João Paulo Rechi Vita [Tue, 22 May 2018 21:29:56 +0000 (14:29 -0700)]
platform/x86: asus-wireless: Fix format specifier
u64 should be printed with %llx instead of %x and cast to uint.
Signed-off-by: João Paulo Rechi Vita <jprvita@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
João Paulo Rechi Vita [Tue, 22 May 2018 21:30:15 +0000 (14:30 -0700)]
platform/x86: asus-wmi: Fix NULL pointer dereference
Do not perform the rfkill cleanup routine when
(asus->driver->wlan_ctrl_by_user && ashs_present()) is true, since
nothing is registered with the rfkill subsystem in that case. Doing so
leads to the following kernel NULL pointer dereference:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<
ffffffff816c7348>] __mutex_lock_slowpath+0x98/0x120
PGD
1a3aa8067
PUD
1a3b3d067
PMD 0
Oops: 0002 [#1] PREEMPT SMP
Modules linked in: bnep ccm binfmt_misc uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core hid_a4tech videodev x86_pkg_temp_thermal intel_powerclamp coretemp ath3k btusb btrtl btintel bluetooth kvm_intel snd_hda_codec_hdmi kvm snd_hda_codec_realtek snd_hda_codec_generic irqbypass crc32c_intel arc4 i915 snd_hda_intel snd_hda_codec ath9k ath9k_common ath9k_hw ath i2c_algo_bit snd_hwdep mac80211 ghash_clmulni_intel snd_hda_core snd_pcm snd_timer cfg80211 ehci_pci xhci_pci drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm xhci_hcd ehci_hcd asus_nb_wmi(-) asus_wmi sparse_keymap r8169 rfkill mxm_wmi serio_raw snd mii mei_me lpc_ich i2c_i801 video soundcore mei i2c_smbus wmi i2c_core mfd_core
CPU: 3 PID: 3275 Comm: modprobe Not tainted 4.9.34-gentoo #34
Hardware name: ASUSTeK COMPUTER INC. K56CM/K56CM, BIOS K56CM.206 08/21/2012
task:
ffff8801a639ba00 task.stack:
ffffc900014cc000
RIP: 0010:[<
ffffffff816c7348>] [<
ffffffff816c7348>] __mutex_lock_slowpath+0x98/0x120
RSP: 0018:
ffffc900014cfce0 EFLAGS:
00010282
RAX:
0000000000000000 RBX:
ffff8801a54315b0 RCX:
00000000c0000100
RDX:
0000000000000001 RSI:
0000000000000000 RDI:
ffff8801a54315b4
RBP:
ffffc900014cfd30 R08:
0000000000000000 R09:
0000000000000002
R10:
0000000000000000 R11:
0000000000000000 R12:
ffff8801a54315b4
R13:
ffff8801a639ba00 R14:
00000000ffffffff R15:
ffff8801a54315b8
FS:
00007faa254fb700(0000) GS:
ffff8801aef80000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
0000000000000000 CR3:
00000001a3b1b000 CR4:
00000000001406e0
Stack:
ffff8801a54315b8 0000000000000000 ffffffff814733ae ffffc900014cfd28
ffffffff8146a28c ffff8801a54315b0 0000000000000000 ffff8801a54315b0
ffff8801a66f3820 0000000000000000 ffffc900014cfd48 ffffffff816c73e7
Call Trace:
[<
ffffffff814733ae>] ? acpi_ut_release_mutex+0x5d/0x61
[<
ffffffff8146a28c>] ? acpi_ns_get_node+0x49/0x52
[<
ffffffff816c73e7>] mutex_lock+0x17/0x30
[<
ffffffffa00a3bb4>] asus_rfkill_hotplug+0x24/0x1a0 [asus_wmi]
[<
ffffffffa00a4421>] asus_wmi_rfkill_exit+0x61/0x150 [asus_wmi]
[<
ffffffffa00a49f1>] asus_wmi_remove+0x61/0xb0 [asus_wmi]
[<
ffffffff814a5128>] platform_drv_remove+0x28/0x40
[<
ffffffff814a2901>] __device_release_driver+0xa1/0x160
[<
ffffffff814a29e3>] device_release_driver+0x23/0x30
[<
ffffffff814a1ffd>] bus_remove_device+0xfd/0x170
[<
ffffffff8149e5a9>] device_del+0x139/0x270
[<
ffffffff814a5028>] platform_device_del+0x28/0x90
[<
ffffffff814a50a2>] platform_device_unregister+0x12/0x30
[<
ffffffffa00a4209>] asus_wmi_unregister_driver+0x19/0x30 [asus_wmi]
[<
ffffffffa00da0ea>] asus_nb_wmi_exit+0x10/0xf26 [asus_nb_wmi]
[<
ffffffff8110c692>] SyS_delete_module+0x192/0x270
[<
ffffffff810022b2>] ? exit_to_usermode_loop+0x92/0xa0
[<
ffffffff816ca560>] entry_SYSCALL_64_fastpath+0x13/0x94
Code: e8 5e 30 00 00 8b 03 83 f8 01 0f 84 93 00 00 00 48 8b 43 10 4c 8d 7b 08 48 89 63 10 41 be ff ff ff ff 4c 89 3c 24 48 89 44 24 08 <48> 89 20 4c 89 6c 24 10 eb 1d 4c 89 e7 49 c7 45 08 02 00 00 00
RIP [<
ffffffff816c7348>] __mutex_lock_slowpath+0x98/0x120
RSP <
ffffc900014cfce0>
CR2:
0000000000000000
---[ end trace
8d484233fa7cb512 ]---
note: modprobe[3275] exited with preempt_count 2
https://bugzilla.kernel.org/show_bug.cgi?id=196467
Reported-by: red.f0xyz@gmail.com
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Henk [Tue, 1 May 2018 11:11:54 +0000 (13:11 +0200)]
platform/x86: dell-wmi: Set correct keycode for Fn + left arrow
Fn + left arrow hotkey combination is used for enabling/disabling automatic
display brightness based on integrated ALS sensor. For this purpose there
is standard Linux key KEY_BRIGHTNESS_AUTO so use it instead of KEY_UNKNOWN.
Tested on Dell Lattitude E6500.
Signed-off-by: Henk Vergonet <henk.vergonet@gmail.com>
Reviewed-By: Pali Rohár <pali.rohar@gmail.com>
Reviewed-By: Mario Limonciello <mario.limonciello@dell.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Antonio Rosario Intilisano [Fri, 27 Apr 2018 21:50:21 +0000 (23:50 +0200)]
platform/x86: acer-wmi: add another KEY_POWER keycode
Now that we have informed the firmware that the Power Button driver is active,
laptops such as the Acer Swift 3 will generate a WMI key event with code 0x87
when the power button key is pressed.
Add this keycode to the table so that it is converted to
an appropriate input event.
Signed-off-by: Antonio Rosario Intilisano <antonio.intilisano@gmail.com>
Acked-by: Gianfranco Costamagna <locutusofborg@debian.org>
Tested-by: Antonio Rosario Intilisano <antonio.intilisano@gmail.com>
Cc: Chris Chiu <chiu@endlessm.com>
Cc: Daniel Drake <drake@endlessm.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Oleg Keri [Sun, 13 May 2018 16:05:07 +0000 (19:05 +0300)]
platform/x86: ideapad-laptop: Add fn-lock setting
Some of latest Lenovo ideapad laptops do not have UEFI/BIOS setting for
switching fn-lock mode. This commit adds related acpi calls to ideapad
platform driver. However setting is available via sysfs.
Signed-off-by: Oleg Keri <ezhi99@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Takashi Iwai [Mon, 14 May 2018 13:31:28 +0000 (15:31 +0200)]
platform/x86: ideapad-laptop: Add MIIX 720-12IKB to no_hw_rfkill
Yet another Lenovo model to be added to the no_hw_rfkill blacklist:
ideapad MIIX 720-12IKB. Otherwise it's always hard-blocked.
Reported-by: Robin Roevens <robin.roevens1@pandora.be>
Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=1093035
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Andy Shevchenko [Fri, 4 May 2018 01:13:45 +0000 (04:13 +0300)]
lib/string_helpers: Add missed declaration of struct task_struct
Starting from the commit
0d0443288f22 the new function has been
introduced which takes struct task_struct as a parameter. Though,
compiler doesn't know where to get information about it at this stage.
Add missed declaration of struct task_struct to satisfy compiler.
Fixes:
0d0443288f22 ("string_helpers: add kstrdup_quotable_cmdline")
Cc: Kees Cook <keescook@chromium.org>
Cc: James Morris <james.l.morris@oracle.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Kees Cook <keescook@chromium.org>
Darren Hart [Sat, 12 May 2018 19:10:07 +0000 (12:10 -0700)]
platform/x86: DELL_WMI use depends on instead of select for DELL_SMBIOS
If DELL_WMI "select"s DELL_SMBIOS, the DELL_SMBIOS dependencies are
ignored and it is still possible to end up with unmet direct
dependencies.
Change the select to a depends on.
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Vadim Pasternak [Tue, 27 Mar 2018 10:02:02 +0000 (10:02 +0000)]
platform/mellanox: mlxreg-hotplug: Document fixes for hotplug private data
Add missing description of dev, regmap, dwork_irq, after_probe in struct
mlxreg_hotplug_priv_data.
Remove dwork field from the structure mlxreg_hotplug_priv_data itself and
for the descriptions, since it is not used.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Vadim Pasternak [Tue, 27 Mar 2018 10:02:01 +0000 (10:02 +0000)]
platform_data/mlxreg: Document fixes for hotplug device
Remove redunadant description of label in struct mlxreg_hotplug_device.
Change location of access_mode in struct mlxreg_hotplug_device.
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Henrique de Moraes Holschuh [Tue, 24 Apr 2018 19:56:05 +0000 (16:56 -0300)]
platform/x86: thinkpad_acpi: silence false-positive-prone pr_warn
Do not consider unknown HKEY events in the 0x6000 range to be thermal
warnings. Instead, handle them as a generic unknown HKEY event, which
are reported to the kernel log at priority "notice", and do not trigger
a thermal registers state dump to the log.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Tested-by: Jordan Glover <Golden_Miller83@protonmail.ch>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Henrique de Moraes Holschuh [Tue, 24 Apr 2018 19:56:04 +0000 (16:56 -0300)]
platform/x86: thinkpad_acpi: do not report thermal sensor state for tablet mode switch
We should not do a thermal sensors state dump to the kernel log just
because the laptop is reporting that it changed into or out of tablet
mode.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Tested-by: Jordan Glover <Golden_Miller83@protonmail.ch>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Henrique de Moraes Holschuh [Tue, 24 Apr 2018 19:56:03 +0000 (16:56 -0300)]
platform/x86: thinkpad_acpi: silence HKEY 0x6032, 0x60f0, 0x6030
Demote to debug level one existing thermal-control related event, and
also add two new ones that would otherwise trigger unknown event
warnings. These events are Windows-only for now.
We do report them to userspace in case they become useful in the future.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Reported-by: Jordan Glover <Golden_Miller83@protonmail.ch>
Tested-by: Jordan Glover <Golden_Miller83@protonmail.ch>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Luc Van Oostenryck [Tue, 24 Apr 2018 13:15:43 +0000 (15:15 +0200)]
platform/x86: apple-gmux: fix gmux_get_client_id()'s return type
The method struct vga_switcheroo_handler::get_client_id() is defined
as returning an 'enum vga_switcheroo_client_id' but the implementation
in this driver, gmux_get_client_id(), returns an 'int'.
Fix this by returning 'enum vga_switcheroo_client_id' in this driver too.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Mario Limonciello [Fri, 20 Apr 2018 17:42:11 +0000 (12:42 -0500)]
platform/x86: Kconfig: Fix dell-laptop dependency chain.
As reported by Randy Dunlap:
>> WARNING: unmet direct dependencies detected for DELL_SMBIOS
>> Depends on [m]: X86 [=y] && X86_PLATFORM_DEVICES [=y]
>> && (DCDBAS [=m] ||
>> DCDBAS [=m]=n) && (ACPI_WMI [=n] || ACPI_WMI [=n]=n)
>> Selected by [y]:
>> - DELL_LAPTOP [=y] && X86 [=y] && X86_PLATFORM_DEVICES [=y]
>> && DMI [=y]
>> && BACKLIGHT_CLASS_DEVICE [=y] && (ACPI_VIDEO [=n] ||
>> ACPI_VIDEO [=n]=n)
>> && (RFKILL [=n] || RFKILL [=n]=n) && SERIO_I8042 [=y]
>>
Right now it's possible to set dell laptop to compile in but this
causes dell-smbios to compile in which breaks if dcdbas is a module.
Dell laptop shouldn't select dell-smbios anymore, but depend on it.
Fixes:
32d7b19bad96 (platform/x86: dell-smbios: Resolve dependency error on DCDBAS)
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Cc: stable@vger.kernel.org
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Wolfram Sang [Thu, 19 Apr 2018 14:06:10 +0000 (16:06 +0200)]
platform/x86: Simplify getting .drvdata
We should get drvdata from struct device directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
João Paulo Rechi Vita [Thu, 19 Apr 2018 14:04:34 +0000 (07:04 -0700)]
platform/x86: asus-wireless: Fix NULL pointer dereference
When the module is removed the led workqueue is destroyed in the remove
callback, before the led device is unregistered from the led subsystem.
This leads to a NULL pointer derefence when the led device is
unregistered automatically later as part of the module removal cleanup.
Bellow is the backtrace showing the problem.
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: __queue_work+0x8c/0x410
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
Modules linked in: ccm edac_mce_amd kvm_amd kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 joydev crypto_simd asus_nb_wmi glue_helper uvcvideo snd_hda_codec_conexant snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel asus_wmi snd_hda_codec cryptd snd_hda_core sparse_keymap videobuf2_vmalloc arc4 videobuf2_memops snd_hwdep input_leds videobuf2_v4l2 ath9k psmouse videobuf2_core videodev ath9k_common snd_pcm ath9k_hw media fam15h_power ath k10temp snd_timer mac80211 i2c_piix4 r8169 mii mac_hid cfg80211 asus_wireless(-) snd soundcore wmi shpchp 8250_dw ip_tables x_tables amdkfd amd_iommu_v2 amdgpu radeon chash i2c_algo_bit drm_kms_helper syscopyarea serio_raw sysfillrect sysimgblt fb_sys_fops ahci ttm libahci drm video
CPU: 3 PID: 2177 Comm: rmmod Not tainted 4.15.0-5-generic #6+dev94.b4287e5bem1-Endless
Hardware name: ASUSTeK COMPUTER INC. X555DG/X555DG, BIOS 5.011 05/05/2015
RIP: 0010:__queue_work+0x8c/0x410
RSP: 0018:
ffffbe8cc249fcd8 EFLAGS:
00010086
RAX:
ffff992ac6810800 RBX:
0000000000000000 RCX:
0000000000000008
RDX:
0000000000000000 RSI:
0000000000000008 RDI:
ffff992ac6400e18
RBP:
ffffbe8cc249fd18 R08:
ffff992ac6400db0 R09:
0000000000000000
R10:
0000000000000040 R11:
ffff992ac6400dd8 R12:
0000000000002000
R13:
ffff992abd762e00 R14:
ffff992abd763e38 R15:
000000000001ebe0
FS:
00007f318203e700(0000) GS:
ffff992aced80000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
0000000000000000 CR3:
00000001c720e000 CR4:
00000000001406e0
Call Trace:
queue_work_on+0x38/0x40
led_state_set+0x2c/0x40 [asus_wireless]
led_set_brightness_nopm+0x14/0x40
led_set_brightness+0x37/0x60
led_trigger_set+0xfc/0x1d0
led_classdev_unregister+0x32/0xd0
devm_led_classdev_release+0x11/0x20
release_nodes+0x109/0x1f0
devres_release_all+0x3c/0x50
device_release_driver_internal+0x16d/0x220
driver_detach+0x3f/0x80
bus_remove_driver+0x55/0xd0
driver_unregister+0x2c/0x40
acpi_bus_unregister_driver+0x15/0x20
asus_wireless_driver_exit+0x10/0xb7c [asus_wireless]
SyS_delete_module+0x1da/0x2b0
entry_SYSCALL_64_fastpath+0x24/0x87
RIP: 0033:0x7f3181b65fd7
RSP: 002b:
00007ffe74bcbe18 EFLAGS:
00000206 ORIG_RAX:
00000000000000b0
RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f3181b65fd7
RDX:
000000000000000a RSI:
0000000000000800 RDI:
0000555ea2559258
RBP:
0000555ea25591f0 R08:
00007ffe74bcad91 R09:
000000000000000a
R10:
0000000000000000 R11:
0000000000000206 R12:
0000000000000003
R13:
00007ffe74bcae00 R14:
0000000000000000 R15:
0000555ea25591f0
Code: 01 00 00 02 0f 85 7d 01 00 00 48 63 45 d4 48 c7 c6 00 f4 fa 87 49 8b 9d 08 01 00 00 48 03 1c c6 4c 89 f7 e8 87 fb ff ff 48 85 c0 <48> 8b 3b 0f 84 c5 01 00 00 48 39 f8 0f 84 bc 01 00 00 48 89 c7
RIP: __queue_work+0x8c/0x410 RSP:
ffffbe8cc249fcd8
CR2:
0000000000000000
---[ end trace
7aa4f4a232e9c39c ]---
Unregistering the led device on the remove callback before destroying the
workqueue avoids this problem.
https://bugzilla.kernel.org/show_bug.cgi?id=196097
Reported-by: Dun Hum <bitter.taste@gmx.com>
Cc: stable@vger.kernel.org
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Mario Limonciello [Tue, 17 Apr 2018 19:45:56 +0000 (14:45 -0500)]
platform/x86: dell-smbios: Match on dell.com in OEM strings too
Sergey reported that some much older Dell systems don't support
the OEM string "Dell System" but instead supported www.dell.com
in OEM strings.
Match both of these to indicate that this driver is running on
a Dell system.
Reported-by: Sergey Kubushyn <ksi@koi8.net>
Tested-by: Sergey Kubushyn <ksi@koi8.net>
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
[dvhart: Simplify DMI logic and eliminate unnecessary variables]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Jia-Ju Bai [Tue, 10 Apr 2018 12:57:56 +0000 (20:57 +0800)]
platform: x86: intel_scu_ipc: Replace mdelay with usleep_range in intel_scu_ipc_i2c_cntrl
intel_scu_ipc_i2c_cntrl() calls mutex_lock(), which indicates
this function is not called in atomic context.
Despite never getting called from atomic context,
intel_scu_ipc_i2c_cntrl() calls mdelay to busily wait.
This is not necessary and can be replaced with usleep_range to
avoid busy waiting.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Darren Hart (VMware) [Fri, 23 Mar 2018 01:11:22 +0000 (18:11 -0700)]
platform/x86: fujitsu-laptop: Simplify soft key handling
The hardcoded BIT(X) used in the soft key handling can be confusing and
prone to errors.
Instead, use the status FLAG_* defines for the sparse keymap index.
Rather than check for each known bit, use a bitmask to filter for all
known soft keys, and use the for_each_set_bit iterator.
Cc: Jan-Marek Glogowski <glogow@fbihome.de>
Cc: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Linus Torvalds [Mon, 16 Apr 2018 01:24:20 +0000 (18:24 -0700)]
Linux 4.17-rc1
Linus Torvalds [Mon, 16 Apr 2018 01:08:35 +0000 (18:08 -0700)]
Merge tag 'for-4.17-part2-tag' of git://git./linux/kernel/git/kdave/linux
Pull more btrfs updates from David Sterba:
"We have queued a few more fixes (error handling, log replay,
softlockup) and the rest is SPDX updates that touche almost all files
so the diffstat is long"
* tag 'for-4.17-part2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: Only check first key for committed tree blocks
btrfs: add SPDX header to Kconfig
btrfs: replace GPL boilerplate by SPDX -- sources
btrfs: replace GPL boilerplate by SPDX -- headers
Btrfs: fix loss of prealloc extents past i_size after fsync log replay
Btrfs: clean up resources during umount after trans is aborted
btrfs: Fix possible softlock on single core machines
Btrfs: bail out on error during replay_dir_deletes
Btrfs: fix NULL pointer dereference in log_dir_items
Linus Torvalds [Mon, 16 Apr 2018 01:06:22 +0000 (18:06 -0700)]
Merge tag '4.17-rc1SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"SMB3 fixes, a few for stable, and some important cleanup work from
Ronnie of the smb3 transport code"
* tag '4.17-rc1SMB3-Fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: change validate_buf to validate_iov
cifs: remove rfc1002 hardcoded constants from cifs_discard_remaining_data()
cifs: Change SMB2_open to return an iov for the error parameter
cifs: add resp_buf_size to the mid_q_entry structure
smb3.11: replace a 4 with server->vals->header_preamble_size
cifs: replace a 4 with server->vals->header_preamble_size
cifs: add pdu_size to the TCP_Server_Info structure
SMB311: Improve checking of negotiate security contexts
SMB3: Fix length checking of SMB3.11 negotiate request
CIFS: add ONCE flag for cifs_dbg type
cifs: Use ULL suffix for 64-bit constant
SMB3: Log at least once if tree connect fails during reconnect
cifs: smb2pdu: Fix potential NULL pointer dereference
Linus Torvalds [Mon, 16 Apr 2018 00:24:12 +0000 (17:24 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of minor (and safe changes) that didn't make the initial
pull request plus some bug fixes.
The status handling code is actually a running regression from the
previous merge window which had an incomplete fix (now reverted) and
most of the remaining bug fixes are for problems older than the
current merge window"
[ Side note: this merge also takes the base kernel git repository to 6+
million objects for the first time. Technically we hit it a couple of
merges ago already if you count all the tag objects, but now it
reaches 6M+ objects reachable from HEAD.
I was joking around that that's when I should switch to 5.0, because
3.0 happened at the 2M mark, and 4.0 happened at 4M objects. But
probably not, even if numerology is about as good a reason as any.
- Linus ]
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: devinfo: Add Microsoft iSCSI target to 1024 sector blacklist
scsi: cxgb4i: silence overflow warning in t4_uld_rx_handler()
scsi: dpt_i2o: Use after free in I2ORESETCMD ioctl
scsi: core: Make scsi_result_to_blk_status() recognize CONDITION MET
scsi: core: Rename __scsi_error_from_host_byte() into scsi_result_to_blk_status()
Revert "scsi: core: return BLK_STS_OK for DID_OK in __scsi_error_from_host_byte()"
scsi: aacraid: Insure command thread is not recursively stopped
scsi: qla2xxx: Correct setting of SAM_STAT_CHECK_CONDITION
scsi: qla2xxx: correctly shift host byte
scsi: qla2xxx: Fix race condition between iocb timeout and initialisation
scsi: qla2xxx: Avoid double completion of abort command
scsi: qla2xxx: Fix small memory leak in qla2x00_probe_one on probe failure
scsi: scsi_dh: Don't look for NULL devices handlers by name
scsi: core: remove redundant assignment to shost->use_blk_mq
Linus Torvalds [Mon, 16 Apr 2018 00:21:30 +0000 (17:21 -0700)]
Merge tag 'kbuild-v4.17-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- pass HOSTLDFLAGS when compiling single .c host programs
- build genksyms lexer and parser files instead of using shipped
versions
- rename *-asn1.[ch] to *.asn1.[ch] for suffix consistency
- let the top .gitignore globally ignore artifacts generated by flex,
bison, and asn1_compiler
- let the top Makefile globally clean artifacts generated by flex,
bison, and asn1_compiler
- use safer .SECONDARY marker instead of .PRECIOUS to prevent
intermediate files from being removed
- support -fmacro-prefix-map option to make __FILE__ a relative path
- fix # escaping to prepare for the future GNU Make release
- clean up deb-pkg by using debian tools instead of handrolled
source/changes generation
- improve rpm-pkg portability by supporting kernel-install as a
fallback of new-kernel-pkg
- extend Kconfig listnewconfig target to provide more information
* tag 'kbuild-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: extend output of 'listnewconfig'
kbuild: rpm-pkg: use kernel-install as a fallback for new-kernel-pkg
Kbuild: fix # escaping in .cmd files for future Make
kbuild: deb-pkg: split generating packaging and build
kbuild: use -fmacro-prefix-map to make __FILE__ a relative path
kbuild: mark $(targets) as .SECONDARY and remove .PRECIOUS markers
kbuild: rename *-asn1.[ch] to *.asn1.[ch]
kbuild: clean up *-asn1.[ch] patterns from top-level Makefile
.gitignore: move *-asn1.[ch] patterns to the top-level .gitignore
kbuild: add %.dtb.S and %.dtb to 'targets' automatically
kbuild: add %.lex.c and %.tab.[ch] to 'targets' automatically
genksyms: generate lexer and parser during build instead of shipping
kbuild: clean up *.lex.c and *.tab.[ch] patterns from top-level Makefile
.gitignore: move *.lex.c *.tab.[ch] patterns to the top-level .gitignore
kbuild: use HOSTLDFLAGS for single .c executables
Linus Torvalds [Sun, 15 Apr 2018 23:12:35 +0000 (16:12 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes and updates for x86:
- Address a swiotlb regression which was caused by the recent DMA
rework and made driver fail because dma_direct_supported() returned
false
- Fix a signedness bug in the APIC ID validation which caused invalid
APIC IDs to be detected as valid thereby bloating the CPU possible
space.
- Fix inconsisten config dependcy/select magic for the MFD_CS5535
driver.
- Fix a corruption of the physical address space bits when encryption
has reduced the address space and late cpuinfo updates overwrite
the reduced bit information with the original value.
- Dominiks syscall rework which consolidates the architecture
specific syscall functions so all syscalls can be wrapped with the
same macros. This allows to switch x86/64 to struct pt_regs based
syscalls. Extend the clearing of user space controlled registers in
the entry patch to the lower registers"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Fix signedness bug in APIC ID validity checks
x86/cpu: Prevent cpuinfo_x86::x86_phys_bits adjustment corruption
x86/olpc: Fix inconsistent MFD_CS5535 configuration
swiotlb: Use dma_direct_supported() for swiotlb_ops
syscalls/x86: Adapt syscall_wrapper.h to the new syscall stub naming convention
syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()
syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
syscalls/core, syscalls/x86: Clean up syscall stub naming convention
syscalls/x86: Extend register clearing on syscall entry to lower registers
syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64
syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32
syscalls/core: Prepare CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y for compat syscalls
syscalls/x86: Use 'struct pt_regs' based syscall calling convention for 64-bit syscalls
syscalls/core: Introduce CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
x86/syscalls: Don't pointlessly reload the system call number
x86/mm: Fix documentation of module mapping range with 4-level paging
x86/cpuid: Switch to 'static const' specifier
Linus Torvalds [Sun, 15 Apr 2018 20:35:29 +0000 (13:35 -0700)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 pti updates from Thomas Gleixner:
"Another series of PTI related changes:
- Remove the manual stack switch for user entries from the idtentry
code. This debloats entry by 5k+ bytes of text.
- Use the proper types for the asm/bootparam.h defines to prevent
user space compile errors.
- Use PAGE_GLOBAL for !PCID systems to gain back performance
- Prevent setting of huge PUD/PMD entries when the entries are not
leaf entries otherwise the entries to which the PUD/PMD points to
and are populated get lost"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/pgtable: Don't set huge PUD/PMD on non-leaf entries
x86/pti: Leave kernel text global for !PCID
x86/pti: Never implicitly clear _PAGE_GLOBAL for kernel image
x86/pti: Enable global pages for shared areas
x86/mm: Do not forbid _PAGE_RW before init for __ro_after_init
x86/mm: Comment _PAGE_GLOBAL mystery
x86/mm: Remove extra filtering in pageattr code
x86/mm: Do not auto-massage page protections
x86/espfix: Document use of _PAGE_GLOBAL
x86/mm: Introduce "default" kernel PTE mask
x86/mm: Undo double _PAGE_PSE clearing
x86/mm: Factor out pageattr _PAGE_GLOBAL setting
x86/entry/64: Drop idtentry's manual stack switch for user entries
x86/uapi: Fix asm/bootparam.h userspace compilation errors
Linus Torvalds [Sun, 15 Apr 2018 19:43:30 +0000 (12:43 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"A few scheduler fixes:
- Prevent a bogus warning vs. runqueue clock update flags in
do_sched_rt_period_timer()
- Simplify the helper functions which handle requests for skipping
the runqueue clock updat.
- Do not unlock the tunables mutex in the error path of the cpu
frequency scheduler utils. Its not held.
- Enforce proper alignement for 'struct util_est' in sched_avg to
prevent a misalignment fault on IA64"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Force proper alignment of 'struct util_est'
sched/core: Simplify helpers for rq clock update skip requests
sched/rt: Fix rq->clock_update_flags < RQCF_ACT_SKIP warning
sched/cpufreq/schedutil: Fix error path mutex unlock
Linus Torvalds [Sun, 15 Apr 2018 19:36:31 +0000 (12:36 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull more perf updates from Thomas Gleixner:
"A rather large set of perf updates:
Kernel:
- Fix various initialization issues
- Prevent creating [ku]probes for not CAP_SYS_ADMIN users
Tooling:
- Show only failing syscalls with 'perf trace --failure' (Arnaldo
Carvalho de Melo)
e.g: See what 'openat' syscalls are failing:
# perf trace --failure -e openat
762.323 ( 0.007 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video2) = -1 ENOENT No such file or directory
<SNIP N /dev/videoN open attempts... sigh, where is that improvised camera lid?!? >
790.228 ( 0.008 ms): VideoCapture/4566 openat(dfd: CWD, filename: /dev/video63) = -1 ENOENT No such file or directory
^C#
- Show information about the event (freq, nr_samples, total
period/nr_events) in the annotate --tui and --stdio2 'perf
annotate' output, similar to the first line in the 'perf report
--tui', but just for the samples for a the annotated symbol
(Arnaldo Carvalho de Melo)
- Introduce 'perf version --build-options' to show what features were
linked, aliased as well as a shorter 'perf -vv' (Jin Yao)
- Add a "dso_size" sort order (Kim Phillips)
- Remove redundant ')' in the tracepoint output in 'perf trace'
(Changbin Du)
- Synchronize x86's cpufeatures.h, no effect on toolss (Arnaldo
Carvalho de Melo)
- Show group details on the title line in the annotate browser and
'perf annotate --stdio2' output, so that the per-event columns can
have headers (Arnaldo Carvalho de Melo)
- Fixup vertical line separating metrics from instructions and
cleaning unused lines at the bottom, both in the annotate TUI
browser (Arnaldo Carvalho de Melo)
- Remove duplicated 'samples' in lost samples warning in
'perf report' (Arnaldo Carvalho de Melo)
- Synchronize i915_drm.h, silencing the perf build process,
automagically adding support for the new DRM_I915_QUERY ioctl
(Arnaldo Carvalho de Melo)
- Make auxtrace_queues__add_buffer() allocate struct buffer, from a
patchkit already applied (Adrian Hunter)
- Fix the --stdio2/TUI annotate output to include group details, be
it for a recorded '{a,b,f}' explicit event group or when forcing
group display using 'perf report --group' for a set of events not
recorded as a group (Arnaldo Carvalho de Melo)
- Fix display artifacts in the ui browser (base class for the
annotate and main report/top TUI browser) related to the extra
title lines work (Arnaldo Carvalho de Melo)
- perf auxtrace refactorings, leftovers from a previously partially
processed patchset (Adrian Hunter)
- Fix the builtin clang build (Sandipan Das, Arnaldo Carvalho de
Melo)
- Synchronize i915_drm.h, silencing a perf build warning and in the
process automagically adding support for a new ioctl command
(Arnaldo Carvalho de Melo)
- Fix a strncpy issue in uprobe tracing"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
perf/core: Need CAP_SYS_ADMIN to create k/uprobe with perf_event_open()
tracing/uprobe_event: Fix strncpy corner case
perf/core: Fix perf_uprobe_init()
perf/core: Fix perf_kprobe_init()
perf/core: Fix use-after-free in uprobe_perf_close()
perf tests clang: Fix function name for clang IR test
perf clang: Add support for recent clang versions
perf tools: Fix perf builds with clang support
perf tools: No need to include namespaces.h in util.h
perf hists browser: Remove leftover from row returned from refresh
perf hists browser: Show extra_title_lines in the 'D' debug hotkey
perf auxtrace: Make auxtrace_queues__add_buffer() do CPU filtering
tools headers uapi: Synchronize i915_drm.h
perf report: Remove duplicated 'samples' in lost samples warning
perf ui browser: Fixup cleaning unused lines at the bottom
perf annotate browser: Fixup vertical line separating metrics from instructions
perf annotate: Show group details on the title line
perf auxtrace: Make auxtrace_queues__add_buffer() allocate struct buffer
perf/x86/intel: Move regs->flags EXACT bit init
perf trace: Remove redundant ')'
...
Linus Torvalds [Sun, 15 Apr 2018 19:32:06 +0000 (12:32 -0700)]
Merge branch 'efi-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 EFI bootup fixlet from Thomas Gleixner:
"A single fix for an early boot warning caused by invoking
this_cpu_has() before SMP initialization"
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Fix bogus warning during EFI bootup, use boot_cpu_has() instead of this_cpu_has() in build_cr3_noflush()
Linus Torvalds [Sun, 15 Apr 2018 19:29:46 +0000 (12:29 -0700)]
Merge branch 'irq-core-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irq affinity fixes from Thomas Gleixner:
- Fix error path handling in the affinity spreading code
- Make affinity spreading smarter to avoid issues on systems which
claim to have hotpluggable CPUs while in fact they can't hotplug
anything.
So instead of trying to spread the vectors (and thereby the
associated device queues) to all possibe CPUs, spread them on all
present CPUs first. If there are left over vectors after that first
step they are spread among the possible, but not present CPUs which
keeps the code backwards compatible for virtual decives and NVME
which allocate a queue per possible CPU, but makes the spreading
smarter for devices which have less queues than possible or present
CPUs.
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/affinity: Spread irq vectors among present CPUs as far as possible
genirq/affinity: Allow irq spreading from a given starting point
genirq/affinity: Move actual irq vector spreading into a helper function
genirq/affinity: Rename *node_to_possible_cpumask as *node_to_cpumask
genirq/affinity: Don't return with empty affinity masks on error
Linus Torvalds [Sun, 15 Apr 2018 19:27:58 +0000 (12:27 -0700)]
Merge tag 'for-linus' of git://github.com/openrisc/linux
Pull OpenRISC fixlet from Stafford Horne:
"Just one small thing here, it came in a while back but I didnt have
anything in my 4.16 queue, still its the only thing for 4.17 so
sending it alone.
Small cleanup: remove unused __ARCH_HAVE_MMU define"
* tag 'for-linus' of git://github.com/openrisc/linux:
openrisc: remove unused __ARCH_HAVE_MMU define
Linus Torvalds [Sun, 15 Apr 2018 18:57:12 +0000 (11:57 -0700)]
Merge tag 'powerpc-4.17-2' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix crashes when loading modules built with a different
CONFIG_RELOCATABLE value by adding CONFIG_RELOCATABLE to vermagic.
- Fix busy loops in the OPAL NVRAM driver if we get certain error
conditions from firmware.
- Remove tlbie trace points from KVM code that's called in real mode,
because it causes crashes.
- Fix checkstops caused by invalid tlbiel on Power9 Radix.
- Ensure the set of CPU features we "know" are always enabled is
actually the minimal set when we build with support for firmware
supplied CPU features.
Thanks to: Aneesh Kumar K.V, Anshuman Khandual, Nicholas Piggin.
* tag 'powerpc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Fix CPU_FTRS_ALWAYS vs DT CPU features
powerpc/mm/radix: Fix checkstops caused by invalid tlbiel
KVM: PPC: Book3S HV: trace_tlbie must not be called in realmode
powerpc/8xx: Fix build with hugetlbfs enabled
powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops
powerpc/powernv: define a standard delay for OPAL_BUSY type retry loops
powerpc/fscr: Enable interrupts earlier before calling get_user()
powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()
powerpc/modules: Fix crashes by adding CONFIG_RELOCATABLE to vermagic
Linus Torvalds [Sat, 14 Apr 2018 15:50:50 +0000 (08:50 -0700)]
Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton:
- various hotfixes
- kexec_file updates and feature work
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (27 commits)
kernel/kexec_file.c: move purgatories sha256 to common code
kernel/kexec_file.c: allow archs to set purgatory load address
kernel/kexec_file.c: remove mis-use of sh_offset field during purgatory load
kernel/kexec_file.c: remove unneeded variables in kexec_purgatory_setup_sechdrs
kernel/kexec_file.c: remove unneeded for-loop in kexec_purgatory_setup_sechdrs
kernel/kexec_file.c: split up __kexec_load_puragory
kernel/kexec_file.c: use read-only sections in arch_kexec_apply_relocations*
kernel/kexec_file.c: search symbols in read-only kexec_purgatory
kernel/kexec_file.c: make purgatory_info->ehdr const
kernel/kexec_file.c: remove checks in kexec_purgatory_load
include/linux/kexec.h: silence compile warnings
kexec_file, x86: move re-factored code to generic side
x86: kexec_file: clean up prepare_elf64_headers()
x86: kexec_file: lift CRASH_MAX_RANGES limit on crash_mem buffer
x86: kexec_file: remove X86_64 dependency from prepare_elf64_headers()
x86: kexec_file: purge system-ram walking from prepare_elf64_headers()
kexec_file,x86,powerpc: factor out kexec_file_ops functions
kexec_file: make use of purgatory optional
proc: revalidate misc dentries
mm, slab: reschedule cache_reap() on the same CPU
...
Philipp Rudo [Fri, 13 Apr 2018 22:36:46 +0000 (15:36 -0700)]
kernel/kexec_file.c: move purgatories sha256 to common code
The code to verify the new kernels sha digest is applicable for all
architectures. Move it to common code.
One problem is the string.c implementation on x86. Currently sha256
includes x86/boot/string.h which defines memcpy and memset to be gcc
builtins. By moving the sha256 implementation to common code and
changing the include to linux/string.h both functions are no longer
defined. Thus definitions have to be provided in x86/purgatory/string.c
Link: http://lkml.kernel.org/r/20180321112751.22196-12-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:43 +0000 (15:36 -0700)]
kernel/kexec_file.c: allow archs to set purgatory load address
For s390 new kernels are loaded to fixed addresses in memory before they
are booted. With the current code this is a problem as it assumes the
kernel will be loaded to an 'arbitrary' address. In particular,
kexec_locate_mem_hole searches for a large enough memory region and sets
the load address (kexec_bufer->mem) to it.
Luckily there is a simple workaround for this problem. By returning 1
in arch_kexec_walk_mem, kexec_locate_mem_hole is turned off. This
allows the architecture to set kbuf->mem by hand. While the trick works
fine for the kernel it does not for the purgatory as here the
architectures don't have access to its kexec_buffer.
Give architectures access to the purgatories kexec_buffer by changing
kexec_load_purgatory to take a pointer to it. With this change
architectures have access to the buffer and can edit it as they need.
A nice side effect of this change is that we can get rid of the
purgatory_info->purgatory_load_address field. As now the information
stored there can directly be accessed from kbuf->mem.
Link: http://lkml.kernel.org/r/20180321112751.22196-11-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:39 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove mis-use of sh_offset field during purgatory load
The current code uses the sh_offset field in purgatory_info->sechdrs to
store a pointer to the current load address of the section. Depending
whether the section will be loaded or not this is either a pointer into
purgatory_info->purgatory_buf or kexec_purgatory. This is not only a
violation of the ELF standard but also makes the code very hard to
understand as you cannot tell if the memory you are using is read-only
or not.
Remove this misuse and store the offset of the section in
pugaroty_info->purgatory_buf in sh_offset.
Link: http://lkml.kernel.org/r/20180321112751.22196-10-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:35 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove unneeded variables in kexec_purgatory_setup_sechdrs
The main loop currently uses quite a lot of variables to update the
section headers. Some of them are unnecessary. So clean them up a
little.
Link: http://lkml.kernel.org/r/20180321112751.22196-9-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:32 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove unneeded for-loop in kexec_purgatory_setup_sechdrs
To update the entry point there is an extra loop over all section
headers although this can be done in the main loop. So move it there
and eliminate the extra loop and variable to store the 'entry section
index'.
Also, in the main loop, move the usual case, i.e. non-bss section, out
of the extra if-block.
Link: http://lkml.kernel.org/r/20180321112751.22196-8-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:28 +0000 (15:36 -0700)]
kernel/kexec_file.c: split up __kexec_load_puragory
When inspecting __kexec_load_purgatory you find that it has two tasks
1) setting up the kexec_buffer for the new kernel and,
2) setting up pi->sechdrs for the final load address.
The two tasks are independent of each other. To improve readability
split up __kexec_load_purgatory into two functions, one for each task,
and call them directly from kexec_load_purgatory.
Link: http://lkml.kernel.org/r/20180321112751.22196-7-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:24 +0000 (15:36 -0700)]
kernel/kexec_file.c: use read-only sections in arch_kexec_apply_relocations*
When the relocations are applied to the purgatory only the section the
relocations are applied to is writable. The other sections, i.e. the
symtab and .rel/.rela, are in read-only kexec_purgatory. Highlight this
by marking the corresponding variables as 'const'.
While at it also change the signatures of arch_kexec_apply_relocations* to
take section pointers instead of just the index of the relocation section.
This removes the second lookup and sanity check of the sections in arch
code.
Link: http://lkml.kernel.org/r/20180321112751.22196-6-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:21 +0000 (15:36 -0700)]
kernel/kexec_file.c: search symbols in read-only kexec_purgatory
The stripped purgatory does not contain a symtab. So when looking for
symbols this is done in read-only kexec_purgatory. Highlight this by
marking the corresponding variables as 'const'.
Link: http://lkml.kernel.org/r/20180321112751.22196-5-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:17 +0000 (15:36 -0700)]
kernel/kexec_file.c: make purgatory_info->ehdr const
The kexec_purgatory buffer is read-only. Thus all pointers into
kexec_purgatory are read-only, too. Point this out by explicitly
marking purgatory_info->ehdr as 'const' and update the comments in
purgatory_info.
Link: http://lkml.kernel.org/r/20180321112751.22196-4-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:13 +0000 (15:36 -0700)]
kernel/kexec_file.c: remove checks in kexec_purgatory_load
Before the purgatory is loaded several checks are done whether the ELF
file in kexec_purgatory is valid or not. These checks are incomplete.
For example they don't check for the total size of the sections defined
in the section header table or if the entry point actually points into
the purgatory.
On the other hand the purgatory, although an ELF file on its own, is
part of the kernel. Thus not trusting the purgatory means not trusting
the kernel build itself.
So remove all validity checks on the purgatory and just trust the kernel
build.
Link: http://lkml.kernel.org/r/20180321112751.22196-3-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Philipp Rudo [Fri, 13 Apr 2018 22:36:10 +0000 (15:36 -0700)]
include/linux/kexec.h: silence compile warnings
Patch series "kexec_file: Clean up purgatory load", v2.
Following the discussion with Dave and AKASHI, here are the common code
patches extracted from my recent patch set (Add kexec_file_load support
to s390) [1]. The patches were extracted to allow upstream integration
together with AKASHI's common code patches before the arch code gets
adjusted to the new base.
The reason for this series is to prepare common code for adding
kexec_file_load to s390 as well as cleaning up the mis-use of the
sh_offset field during purgatory load. In detail this series contains:
Patch #1&2: Minor cleanups/fixes.
Patch #3-9: Clean up the purgatory load/relocation code. Especially
remove the mis-use of the purgatory_info->sechdrs->sh_offset field,
currently holding a pointer into either kexec_purgatory (ro) or
purgatory_buf (rw) depending on the section. With these patches the
section address will be calculated verbosely and sh_offset will contain
the offset of the section in the stripped purgatory binary
(purgatory_buf).
Patch #10: Allows architectures to set the purgatory load address. This
patch is important for s390 as the kernel and purgatory have to be
loaded to fixed addresses. In current code this is impossible as the
purgatory load is opaque to the architecture.
Patch #11: Moves x86 purgatories sha implementation to common lib/
directory to allow reuse in other architectures.
This patch (of 11)
When building the kernel with CONFIG_KEXEC_FILE enabled gcc prints a
compile warning multiple times.
In file included from <path>/linux/init/initramfs.c:526:0:
<path>/include/linux/kexec.h:120:9: warning: `struct kimage' declared inside parameter list [enabled by default]
unsigned long cmdline_len);
^
This is because the typedefs for kexec_file_load uses struct kimage
before it is declared. Fix this by simply forward declaring struct
kimage.
Link: http://lkml.kernel.org/r/20180321112751.22196-2-prudo@linux.vnet.ibm.com
Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:36:06 +0000 (15:36 -0700)]
kexec_file, x86: move re-factored code to generic side
In the previous patches, commonly-used routines, exclude_mem_range() and
prepare_elf64_headers(), were carved out. Now place them in kexec
common code. A prefix "crash_" is given to each of their names to avoid
possible name collisions.
Link: http://lkml.kernel.org/r/20180306102303.9063-8-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:36:03 +0000 (15:36 -0700)]
x86: kexec_file: clean up prepare_elf64_headers()
Removing bufp variable in prepare_elf64_headers() makes the code simpler
and more understandable.
Link: http://lkml.kernel.org/r/20180306102303.9063-7-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:59 +0000 (15:35 -0700)]
x86: kexec_file: lift CRASH_MAX_RANGES limit on crash_mem buffer
While CRASH_MAX_RANGES (== 16) seems to be good enough, fixed-number
array is not a good idea in general.
In this patch, size of crash_mem buffer is calculated as before and the
buffer is now dynamically allocated. This change also allows removing
crash_elf_data structure.
Link: http://lkml.kernel.org/r/20180306102303.9063-6-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:56 +0000 (15:35 -0700)]
x86: kexec_file: remove X86_64 dependency from prepare_elf64_headers()
The code guarded by CONFIG_X86_64 is necessary on some architectures
which have a dedicated kernel mapping outside of linear memory mapping.
(arm64 is among those.)
In this patch, an additional argument, kernel_map, is added to enable/
disable the code removing #ifdef.
Link: http://lkml.kernel.org/r/20180306102303.9063-5-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:53 +0000 (15:35 -0700)]
x86: kexec_file: purge system-ram walking from prepare_elf64_headers()
While prepare_elf64_headers() in x86 looks pretty generic for other
architectures' use, it contains some code which tries to list crash
memory regions by walking through system resources, which is not always
architecture agnostic. To make this function more generic, the related
code should be purged.
In this patch, prepare_elf64_headers() simply scans crash_mem buffer
passed and add all the listed regions to elf header as a PT_LOAD
segment. So walk_system_ram_res(prepare_elf64_headers_callback) have
been moved forward before prepare_elf64_headers() where the callback,
prepare_elf64_headers_callback(), is now responsible for filling up
crash_mem buffer.
Meanwhile exclude_elf_header_ranges() used to be called every time in
this callback it is rather redundant and now called only once in
prepare_elf_headers() as well.
Link: http://lkml.kernel.org/r/20180306102303.9063-4-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:49 +0000 (15:35 -0700)]
kexec_file,x86,powerpc: factor out kexec_file_ops functions
As arch_kexec_kernel_image_{probe,load}(),
arch_kimage_file_post_load_cleanup() and arch_kexec_kernel_verify_sig()
are almost duplicated among architectures, they can be commonalized with
an architecture-defined kexec_file_ops array. So let's factor them out.
Link: http://lkml.kernel.org/r/20180306102303.9063-3-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
AKASHI Takahiro [Fri, 13 Apr 2018 22:35:45 +0000 (15:35 -0700)]
kexec_file: make use of purgatory optional
Patch series "kexec_file, x86, powerpc: refactoring for other
architecutres", v2.
This is a preparatory patchset for adding kexec_file support on arm64.
It was originally included in a arm64 patch set[1], but Philipp is also
working on their kexec_file support on s390[2] and some changes are now
conflicting.
So these common parts were extracted and put into a separate patch set
for better integration. What's more, my original patch#4 was split into
a few small chunks for easier review after Dave's comment.
As such, the resulting code is basically identical with my original, and
the only *visible* differences are:
- renaming of _kexec_kernel_image_probe() and _kimage_file_post_load_cleanup()
- change one of types of arguments at prepare_elf64_headers()
Those, unfortunately, require a couple of trivial changes on the rest
(#1, #6 to #13) of my arm64 kexec_file patch set[1].
Patch #1 allows making a use of purgatory optional, particularly useful
for arm64.
Patch #2 commonalizes arch_kexec_kernel_{image_probe, image_load,
verify_sig}() and arch_kimage_file_post_load_cleanup() across
architectures.
Patches #3-#7 are also intended to generalize parse_elf64_headers(),
along with exclude_mem_range(), to be made best re-use of.
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-February/561182.html
[2] http://lkml.iu.edu//hypermail/linux/kernel/1802.1/02596.html
This patch (of 7):
On arm64, crash dump kernel's usable memory is protected by *unmapping*
it from kernel virtual space unlike other architectures where the region
is just made read-only. It is highly unlikely that the region is
accidentally corrupted and this observation rationalizes that digest
check code can also be dropped from purgatory. The resulting code is so
simple as it doesn't require a bit ugly re-linking/relocation stuff,
i.e. arch_kexec_apply_relocations_add().
Please see:
http://lists.infradead.org/pipermail/linux-arm-kernel/2017-December/545428.html
All that the purgatory does is to shuffle arguments and jump into a new
kernel, while we still need to have some space for a hash value
(purgatory_sha256_digest) which is never checked against.
As such, it doesn't make sense to have trampline code between old kernel
and new kernel on arm64.
This patch introduces a new configuration, ARCH_HAS_KEXEC_PURGATORY, and
allows related code to be compiled in only if necessary.
[takahiro.akashi@linaro.org: fix trivial screwup]
Link: http://lkml.kernel.org/r/20180309093346.GF25863@linaro.org
Link: http://lkml.kernel.org/r/20180306102303.9063-2-takahiro.akashi@linaro.org
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Acked-by: Dave Young <dyoung@redhat.com>
Tested-by: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alexey Dobriyan [Fri, 13 Apr 2018 22:35:42 +0000 (15:35 -0700)]
proc: revalidate misc dentries
If module removes proc directory while another process pins it by
chdir'ing to it, then subsequent recreation of proc entry and all
entries down the tree will not be visible to any process until pinning
process unchdir from directory and unpins everything.
Steps to reproduce:
proc_mkdir("aaa", NULL);
proc_create("aaa/bbb", ...);
chdir("/proc/aaa");
remove_proc_entry("aaa/bbb", NULL);
remove_proc_entry("aaa", NULL);
proc_mkdir("aaa", NULL);
# inaccessible because "aaa" dentry still points
# to the original "aaa".
proc_create("aaa/bbb", ...);
Fix is to implement ->d_revalidate and ->d_delete.
Link: http://lkml.kernel.org/r/20180312201938.GA4871@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlastimil Babka [Fri, 13 Apr 2018 22:35:38 +0000 (15:35 -0700)]
mm, slab: reschedule cache_reap() on the same CPU
cache_reap() is initially scheduled in start_cpu_timer() via
schedule_delayed_work_on(). But then the next iterations are scheduled
via schedule_delayed_work(), i.e. using WORK_CPU_UNBOUND.
Thus since commit
ef557180447f ("workqueue: schedule WORK_CPU_UNBOUND
work on wq_unbound_cpumask CPUs") there is no guarantee the future
iterations will run on the originally intended cpu, although it's still
preferred. I was able to demonstrate this with
/sys/module/workqueue/parameters/debug_force_rr_cpu. IIUC, it may also
happen due to migrating timers in nohz context. As a result, some cpu's
would be calling cache_reap() more frequently and others never.
This patch uses schedule_delayed_work_on() with the current cpu when
scheduling the next iteration.
Link: http://lkml.kernel.org/r/20180411070007.32225-1-vbabka@suse.cz
Fixes:
ef557180447f ("workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs")
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Petr Tesarik [Fri, 13 Apr 2018 22:35:34 +0000 (15:35 -0700)]
kexec: export PG_swapbacked to VMCOREINFO
Since commit
6326fec1122c ("mm: Use owner_priv bit for PageSwapCache,
valid when PageSwapBacked"), PG_swapcache is an alias for
PG_owner_priv_1, which may be also used for other purposes.
To know whether the bit indeed has the PG_swapcache meaning, it is
necessary to check PG_swapbacked, hence this bit must be exported.
Link: http://lkml.kernel.org/r/20180410161345.142e142d@ezekiel.suse.cz
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Young <dyoung@redhat.com>
Cc: Xunlei Pang <xlpang@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Hari Bathini <hbathini@linux.vnet.ibm.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: "Marc-Andr Lureau" <marcandre.lureau@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Biggers [Fri, 13 Apr 2018 22:35:30 +0000 (15:35 -0700)]
ipc/shm: fix use-after-free of shm file via remap_file_pages()
syzbot reported a use-after-free of shm_file_data(file)->file->f_op in
shm_get_unmapped_area(), called via sys_remap_file_pages().
Unfortunately it couldn't generate a reproducer, but I found a bug which
I think caused it. When remap_file_pages() is passed a full System V
shared memory segment, the memory is first unmapped, then a new map is
created using the ->vm_file. Between these steps, the shm ID can be
removed and reused for a new shm segment. But, shm_mmap() only checks
whether the ID is currently valid before calling the underlying file's
->mmap(); it doesn't check whether it was reused. Thus it can use the
wrong underlying file, one that was already freed.
Fix this by making the "outer" shm file (the one that gets put in
->vm_file) hold a reference to the real shm file, and by making
__shm_open() require that the file associated with the shm ID matches
the one associated with the "outer" file.
Taking the reference to the real shm file is needed to fully solve the
problem, since otherwise sfd->file could point to a freed file, which
then could be reallocated for the reused shm ID, causing the wrong shm
segment to be mapped (and without the required permission checks).
Commit
1ac0b6dec656 ("ipc/shm: handle removed segments gracefully in
shm_mmap()") almost fixed this bug, but it didn't go far enough because
it didn't consider the case where the shm ID is reused.
The following program usually reproduces this bug:
#include <stdlib.h>
#include <sys/shm.h>
#include <sys/syscall.h>
#include <unistd.h>
int main()
{
int is_parent = (fork() != 0);
srand(getpid());
for (;;) {
int id = shmget(0xF00F, 4096, IPC_CREAT|0700);
if (is_parent) {
void *addr = shmat(id, NULL, 0);
usleep(rand() % 50);
while (!syscall(__NR_remap_file_pages, addr, 4096, 0, 0, 0));
} else {
usleep(rand() % 50);
shmctl(id, IPC_RMID, NULL);
}
}
}
It causes the following NULL pointer dereference due to a 'struct file'
being used while it's being freed. (I couldn't actually get a KASAN
use-after-free splat like in the syzbot report. But I think it's
possible with this bug; it would just take a more extraordinary race...)
BUG: unable to handle kernel NULL pointer dereference at
0000000000000058
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
CPU: 9 PID: 258 Comm: syz_ipc Not tainted 4.16.0-05140-gf8cf2f16a7c95 #189
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-20171110_100015-anatol 04/01/2014
RIP: 0010:d_inode include/linux/dcache.h:519 [inline]
RIP: 0010:touch_atime+0x25/0xd0 fs/inode.c:1724
[...]
Call Trace:
file_accessed include/linux/fs.h:2063 [inline]
shmem_mmap+0x25/0x40 mm/shmem.c:2149
call_mmap include/linux/fs.h:1789 [inline]
shm_mmap+0x34/0x80 ipc/shm.c:465
call_mmap include/linux/fs.h:1789 [inline]
mmap_region+0x309/0x5b0 mm/mmap.c:1712
do_mmap+0x294/0x4a0 mm/mmap.c:1483
do_mmap_pgoff include/linux/mm.h:2235 [inline]
SYSC_remap_file_pages mm/mmap.c:2853 [inline]
SyS_remap_file_pages+0x232/0x310 mm/mmap.c:2769
do_syscall_64+0x64/0x1a0 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ebiggers@google.com: add comment]
Link: http://lkml.kernel.org/r/20180410192850.235835-1-ebiggers3@gmail.com
Link: http://lkml.kernel.org/r/20180409043039.28915-1-ebiggers3@gmail.com
Reported-by: syzbot+d11f321e7f1923157eac80aa990b446596f46439@syzkaller.appspotmail.com
Fixes:
c8d78c1823f4 ("mm: replace remap_file_pages() syscall with emulation")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Fri, 13 Apr 2018 22:35:27 +0000 (15:35 -0700)]
mm/filemap.c: provide dummy filemap_page_mkwrite() for NOMMU
Building orangefs on MMU-less machines now results in a link error
because of the newly introduced use of the filemap_page_mkwrite()
function:
ERROR: "filemap_page_mkwrite" [fs/orangefs/orangefs.ko] undefined!
This adds a dummy version for it, similar to the existing
generic_file_mmap and generic_file_readonly_mmap stubs in the same file,
to avoid the link error without adding #ifdefs in each file system that
uses these.
Link: http://lkml.kernel.org/r/20180409105555.2439976-1-arnd@arndb.de
Fixes:
a5135eeab2e5 ("orangefs: implement vm_ops->fault")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Martin Brandenburg <martin@omnibond.com>
Cc: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael S. Tsirkin [Fri, 13 Apr 2018 22:35:23 +0000 (15:35 -0700)]
mm/gup.c: document return value
__get_user_pages_fast handles errors differently from
get_user_pages_fast: the former always returns the number of pages
pinned, the later might return a negative error code.
Link: http://lkml.kernel.org/r/1522962072-182137-6-git-send-email-mst@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael S. Tsirkin [Fri, 13 Apr 2018 22:35:20 +0000 (15:35 -0700)]
get_user_pages_fast(): return -EFAULT on access_ok failure
get_user_pages_fast is supposed to be a faster drop-in equivalent of
get_user_pages. As such, callers expect it to return a negative return
code when passed an invalid address, and never expect it to return 0
when passed a positive number of pages, since its documentation says:
* Returns number of pages pinned. This may be fewer than the number
* requested. If nr_pages is 0 or negative, returns 0. If no pages
* were pinned, returns -errno.
When get_user_pages_fast fall back on get_user_pages this is exactly
what happens. Unfortunately the implementation is inconsistent: it
returns 0 if passed a kernel address, confusing callers: for example,
the following is pretty common but does not appear to do the right thing
with a kernel address:
ret = get_user_pages_fast(addr, 1, writeable, &page);
if (ret < 0)
return ret;
Change get_user_pages_fast to return -EFAULT when supplied a kernel
address to make it match expectations.
All callers have been audited for consistency with the documented
semantics.
Link: http://lkml.kernel.org/r/1522962072-182137-4-git-send-email-mst@redhat.com
Fixes:
5b65c4677a57 ("mm, x86/mm: Fix performance regression in get_user_pages_fast()")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reported-by: syzbot+6304bf97ef436580fede@syzkaller.appspotmail.com
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael S. Tsirkin [Fri, 13 Apr 2018 22:35:16 +0000 (15:35 -0700)]
mm/gup_benchmark: handle gup failures
Patch series "mm/get_user_pages_fast fixes, cleanups", v2.
Turns out get_user_pages_fast and __get_user_pages_fast return different
values on error when given a single page: __get_user_pages_fast returns
0. get_user_pages_fast returns either 0 or an error.
Callers of get_user_pages_fast expect an error so fix it up to return an
error consistently.
Stress the difference between get_user_pages_fast and
__get_user_pages_fast to make sure callers aren't confused.
This patch (of 3):
__gup_benchmark_ioctl does not handle the case where get_user_pages_fast
fails:
- a negative return code will cause a buffer overrun
- returning with partial success will cause use of uninitialized
memory.
[akpm@linux-foundation.org: simplification]
Link: http://lkml.kernel.org/r/1522962072-182137-3-git-send-email-mst@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Takashi Iwai [Fri, 13 Apr 2018 22:35:13 +0000 (15:35 -0700)]
resource: fix integer overflow at reallocation
We've got a bug report indicating a kernel panic at booting on an x86-32
system, and it turned out to be the invalid PCI resource assigned after
reallocation. __find_resource() first aligns the resource start address
and resets the end address with start+size-1 accordingly, then checks
whether it's contained. Here the end address may overflow the integer,
although resource_contains() still returns true because the function
validates only start and end address. So this ends up with returning an
invalid resource (start > end).
There was already an attempt to cover such a problem in the commit
47ea91b4052d ("Resource: fix wrong resource window calculation"), but
this case is an overseen one.
This patch adds the validity check of the newly calculated resource for
avoiding the integer overflow problem.
Bugzilla: http://bugzilla.opensuse.org/show_bug.cgi?id=1086739
Link: http://lkml.kernel.org/r/s5hpo37d5l8.wl-tiwai@suse.de
Fixes:
23c570a67448 ("resource: ability to resize an allocated resource")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reported-by: Michael Henders <hendersm@shaw.ca>
Tested-by: Michael Henders <hendersm@shaw.ca>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 13 Apr 2018 23:55:41 +0000 (16:55 -0700)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi:
"In addition to bug fixes and cleanups there are two new features from
Amir:
- Consistent inode number support for the case when layers are not
all on the same filesystem (feature is dubbed "xino").
- Optimize overlayfs file handle decoding. This one touches the
exportfs interface to allow detecting the disconnected directory
case"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: update documentation w.r.t "xino" feature
ovl: add support for "xino" mount and config options
ovl: consistent d_ino for non-samefs with xino
ovl: consistent i_ino for non-samefs with xino
ovl: constant st_ino for non-samefs with xino
ovl: allocate anon bdev per unique lower fs
ovl: factor out ovl_map_dev_ino() helper
ovl: cleanup ovl_update_time()
ovl: add WARN_ON() for non-dir redirect cases
ovl: cleanup setting OVL_INDEX
ovl: set d->is_dir and d->opaque for last path element
ovl: Do not check for redirect if this is last layer
ovl: lookup in inode cache first when decoding lower file handle
ovl: do not try to reconnect a disconnected origin dentry
ovl: disambiguate ovl_encode_fh()
ovl: set lower layer st_dev only if setting lower st_ino
ovl: fix lookup with middle layer opaque dir and absolute path redirects
ovl: Set d->last properly during lookup
ovl: set i_ino to the value of st_ino for NFS export
Linus Torvalds [Fri, 13 Apr 2018 23:52:26 +0000 (16:52 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/rzhang/linux
Pull thermal management update from Zhang Rui:
- Fix race condition in imx_thermal_probe() (Mikhail Lappo)
- Add cooling device's statistics in sysfs (Viresh Kumar)
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
thermal: Add cooling device's statistics in sysfs
thermal: imx: Fix race condition in imx_thermal_probe()
Linus Torvalds [Fri, 13 Apr 2018 23:32:16 +0000 (16:32 -0700)]
Merge branch 'dmi-for-linus' of git://git./linux/kernel/git/jdelvare/staging
Pull dmi updates from Jean Delvare.
* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
firmware: dmi_scan: Use lowercase letters for UUID
firmware: dmi_scan: Add DMI_OEM_STRING support to dmi_matches
firmware: dmi_scan: Fix UUID length safety check
Linus Torvalds [Fri, 13 Apr 2018 23:20:36 +0000 (16:20 -0700)]
Merge tag 'chrome-platform-for-linus-4.17' of git://git./linux/kernel/git/bleung/chrome-platform
Pull chrome platform updates from Benson Leung:
- a series from Dmitry to remove platform data from chromeos_laptop.c,
which was the only user of platform data for the atmel_mxt_ts driver.
- a series to clean up sysfs and debugfs for cros_ec
- other misc cleanups
* tag 'chrome-platform-for-linus-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bleung/chrome-platform: (22 commits)
platform/chrome: mfd/cros_ec_dev: Add sysfs entry to set keyboard wake lid angle
platform/chrome: cros_ec_debugfs: Add PD port info to debugfs
platform/chrome: cros_ec_debugfs: Use octal permissions '0444'
platform/chrome: cros_ec_sysfs: use permission-specific DEVICE_ATTR variants
platform/chrome: cros_ec_sysfs: introduce to_cros_ec_dev define.
platform/chrome: cros_ec_sysfs: Modify error handling
platform/chrome: cros_ec_lpc: Add support for Google devices using custom coreboot firmware
platform/chrome: cros_ec_lpc: wake up from s2idle on Chrome EC
Input: atmel_mxt_ts - remove platform data support
platform/chrome: chromeos_laptop - discard data for unneeded boards
platform/chrome: chromeos_laptop - use device properties for Pixel
platform/chrome: chromeos_laptop - rely on I2C to set up interrupt trigger
platform/chrome: chromeos_laptop - use I2C notifier to create devices
platform/chrome: chromeos_laptop - parse DMI IRQ data once
platform/chrome: chromeos_laptop - rework i2c peripherals initialization
platform/chrome: chromeos_laptop - factor out getting IRQ from DMI
platform/chrome: chromeos_laptop - introduce pr_fmt()
platform/chrome: chromeos_laptop - stop setting suspend mode for Atmel devices
platform/chrome: chromeos_laptop - add SPDX identifier
Input: atmel_mxt_ts - switch ChromeOS ACPI devices to generic props
...
Linus Torvalds [Fri, 13 Apr 2018 22:51:06 +0000 (15:51 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"The large diff this time around is from the addition of a new clk
driver for the TI Davinci family of SoCs. So far those clks have been
supported with a custom implementation of the clk API in the arch port
instead of in the CCF. With this driver merged we're one step closer
to having a single clk API implementation.
The other large diff is from the Amlogic clk driver that underwent
some major surgery to use regmap. Beyond that, the biggest hitter is
Samsung which needed some reworks to properly handle clk provider
power domains and a bunch of PLL rate updates.
The core framework was fairly quiet this round, just getting some
cleanups and small fixes for some of the more esoteric features. And
the usual set of driver non-critical fixes, cleanups, and minor
additions are here as well.
Core:
- Rejig clk_ops::init() to be a little earlier for phase/accuracy ops
- debugfs ops macroized to shave some lines of boilerplate code
- Always calculate the phase instead of caching it in clk_get_phase()
- More __must_check on bulk clk APIs
New Drivers:
- TI's Davinci family of SoCs
- Intel's Stratix10 SoC
- stm32mp157 SoC
- Allwinner H6 CCU
- Silicon Labs SI544 clock generator chip
- Renesas R-Car M3-N and V3H SoCs
- i.MX6SLL SoCs
Removed Drivers:
- ST-Ericsson AB8540/9540
Updates:
- Mediatek MT2701 and MT7622 audsys support and MT2712 updates
- STM32F469 DSI and STM32F769 sdmmc2 support
- GPIO clks can sleep now
- Spreadtrum SC9860 RTC clks
- Nvidia Tegra MBIST workarounds and various minor fixes
- Rockchip phase handling fixes and a memory leak plugged
- Renesas drivers switch to readl/writel from clk_readl/clk_writel
- Renesas gained CPU (Z/Z2) and watchdog support
- Rockchip rk3328 display clks and rk3399 1.6GHz PLL support
- Qualcomm PM8921 PMIC XO buffers
- Amlogic migrates to regmap APIs
- TI Keystone clk latching support
- Allwinner H3 and H5 video clk fixes
- Broadcom BCM2835 PLLs needed another bit to enable
- i.MX6SX CKO mux fix and i.MX7D Video PLL divider fix
- i.MX6UL/ULL epdc_podf support
- Hi3798CV200 COMBPHY0 and USB2_OTG_UTMI and phase support for eMMC"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (233 commits)
clk: davinci: add a reset lookup table for psc0
clk: imx: add clock driver for imx6sll
dt-bindings: imx: update clock doc for imx6sll
clk: imx: add new gate/gate2 wrapper funtion
clk: imx: Add CLK_IS_CRITICAL flag for busy divider and busy mux
clk: cs2000: set pm_ops in hibernate-compatible way
clk: bcm2835: De-assert/assert PLL reset signal when appropriate
clk: imx7d: Move clks_init_on before any clock operations
clk: imx7d: Correct ahb clk parent select
clk: imx7d: Correct dram pll type
clk: imx7d: Add USB clock information
clk: socfpga: stratix10: add clock driver for Stratix10 platform
dt-bindings: documentation: add clock bindings information for Stratix10
clk: ti: fix flag space conflict with clkctrl clocks
clk: uniphier: add additional ethernet clock lines for Pro4
clk: uniphier: add SATA clock control support
clk: uniphier: add PCIe clock control support
clk: Add driver for the si544 clock generator chip
clk: davinci: Remove redundant dev_err calls
clk: uniphier: add ethernet clock control support for PXs3
...
Linus Torvalds [Fri, 13 Apr 2018 22:46:21 +0000 (15:46 -0700)]
Merge tag 'pwm/for-4.17-rc1' of git://git./linux/kernel/git/thierry.reding/linux-pwm
Pull pwm updates from Thierry Reding:
"This set of changes adds support for more generations of the RCar
controller as well as runtime PM support. The JZ4740 driver gains
support for device tree and can now be used on all Ingenic SoCs.
Rounding things off is a random assortment of fixes and cleanups all
across the board"
* tag 'pwm/for-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (29 commits)
pwm: rcar: Add suspend/resume support
pwm: rcar: Use PM Runtime to control module clock
dt-bindings: pwm: rcar: Add bindings for R-Car M3N support
pwm: rcar: Fix a condition to prevent mismatch value setting to duty
pwm: sysfs: Use put_device() instead of kfree()
dt-bindings: pwm: sunxi: Add new compatible strings
pwm: sun4i: Simplify controller mapping
pwm: sun4i: Drop unused .has_rdy member
pwm: sun4i: Properly check current state
pwm: Remove depends on AVR32
pwm: stm32: LPTimer: Use 3 cells ->of_xlate()
dt-bindings: pwm-stm32-lp: Add #pwm-cells
pwm: stm32: Protect common prescaler for all channels
pwm: stm32: Remove unused struct device
pwm: mediatek: Improve precision in rate calculation
pwm: mediatek: Remove redundant MODULE_ALIAS entries
pwm: mediatek: Fix up PWM4 and PWM5 malfunction on MT7623
pwm: jz4740: Enable for all Ingenic SoCs
pwm: jz4740: Add support for devicetree
pwm: jz4740: Implement ->set_polarity()
...
Linus Torvalds [Fri, 13 Apr 2018 22:43:50 +0000 (15:43 -0700)]
Merge tag 'linux-watchdog-4.17-rc1' of git://linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
- Add Nuvoton NPCM watchdog driver
- renesas_wdt: Add R-Car Gen2 support
- renesas_wdt: add suspend/resume and restart handler support
- hpwdt: convert to watchdog core and improve NMI
- improve timeout setting/handling in various drivers
- coh901327: make license text and module licence match
- fix error handling in asm9260_wdt, sprd_wdt and davinci_wdt
- aspeed imrovements
- dw improvements (for control register & suspend/resume)
- add SPDX identifiers for watchdog subsystem
* tag 'linux-watchdog-4.17-rc1' of git://www.linux-watchdog.org/linux-watchdog: (35 commits)
watchdog: davinci_wdt: fix error handling in davinci_wdt_probe()
watchdog: add SPDX identifiers for watchdog subsystem
watchdog: aspeed: Allow configuring for alternate boot
watchdog: Add Nuvoton NPCM watchdog driver
dt-bindings: watchdog: Add Nuvoton NPCM description
watchdog: dw: save/restore control and timeout across suspend/resume
watchdog: dw: RMW the control register
watchdog: sprd_wdt: Fix error handling in sprd_wdt_enable()
watchdog: aspeed: Fix translation of reset mode to ctrl register
watchdog: renesas_wdt: Add restart handler
watchdog: renesas_wdt: Add R-Car Gen2 support
watchdog: renesas_wdt: Add suspend/resume support
watchdog: f71808e_wdt: Fix WD_EN register read
watchdog: hpwdt: Update driver version.
watchdog: hpwdt: Add dynamic debug
watchdog: hpwdt: Programable Pretimeout NMI
watchdog: hpwdt: remove allow_kdump module parameter.
watchdog: hpwdt: condition early return of NMI handler on iLO5
watchdog: hpwdt: Modify to use watchdog core.
watchdog: hpwdt: Update nmi_panic message.
...
Linus Torvalds [Fri, 13 Apr 2018 22:38:53 +0000 (15:38 -0700)]
Merge tag 'apparmor-pr-2018-04-10' of git://git./linux/kernel/git/jj/linux-apparmor
Pull apparmor updates from John Johansen:
"Features:
- add base infrastructure for socket mediation. ABI bump and
additional checks to ensure only v8 compliant policy uses socket af
mediation.
- improve and cleanup dfa verification
- improve profile attachment logic
- improve overlapping expression handling
- add the xattr matching to the attachment logic
- improve signal mediation handling with stacked labels
- improve handling of no_new_privs in a label stack
Cleanups and changes:
- use dfa to parse string split
- bounded version of label_parse
- proper line wrap nulldfa.in
- split context out into task and cred naming to better match usage
- simplify code in aafs
Bug fixes:
- fix display of .ns_name for containers
- fix resource audit messages when auditing peer
- fix logging of the existence test for signals
- fix resource audit messages when auditing peer
- fix display of .ns_name for containers
- fix an error code in verify_table_headers()
- fix memory leak on buffer on error exit path
- fix error returns checks by making size a ssize_t"
* tag 'apparmor-pr-2018-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor: (36 commits)
apparmor: fix memory leak on buffer on error exit path
apparmor: fix dangling symlinks to policy rawdata after replacement
apparmor: Fix an error code in verify_table_headers()
apparmor: fix error returns checks by making size a ssize_t
apparmor: update MAINTAINERS file git and wiki locations
apparmor: remove POLICY_MEDIATES_SAFE
apparmor: add base infastructure for socket mediation
apparmor: improve overlapping domain attachment resolution
apparmor: convert attaching profiles via xattrs to use dfa matching
apparmor: Add support for attaching profiles via xattr, presence and value
apparmor: cleanup: simplify code to get ns symlink name
apparmor: cleanup create_aafs() error path
apparmor: dfa split verification of table headers
apparmor: dfa add support for state differential encoding
apparmor: dfa move character match into a macro
apparmor: update domain transitions that are subsets of confinement at nnp
apparmor: move context.h to cred.h
apparmor: move task related defines and fns to task.X files
apparmor: cleanup, drop unused fn __aa_task_is_confined()
apparmor: cleanup fixup description of aa_replace_profiles
...
Linus Torvalds [Fri, 13 Apr 2018 22:15:15 +0000 (15:15 -0700)]
Merge tag 'for-linus-
20180413' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Followup fixes for this merge window. This contains:
- Series from Ming, fixing corner cases in our CPU <-> queue mapping.
This triggered repeated warnings on especially s390, but I also hit
it in cpu hot plug/unplug testing while doing IO on NVMe on x86-64.
- Another fix from Ming, ensuring that we always order budget and
driver tag identically, avoiding a deadlock on QD=1 devices.
- Loop locking regression fix from this merge window, from Omar.
- Another loop locking fix, this time missing an unlock, from Tetsuo
Handa.
- Fix for racing IO submission with device removal from Bart.
- sr reference fix from me, fixing a case where disk change or
getevents can race with device removal.
- Set of nvme fixes by way of Keith, from various contributors"
* tag 'for-linus-
20180413' of git://git.kernel.dk/linux-block: (28 commits)
nvme: expand nvmf_check_if_ready checks
nvme: Use admin command effects for admin commands
nvmet: fix space padding in serial number
nvme: check return value of init_srcu_struct function
nvmet: Fix nvmet_execute_write_zeroes sector count
nvme-pci: Separate IO and admin queue IRQ vectors
nvme-pci: Remove unused queue parameter
nvme-pci: Skip queue deletion if there are no queues
nvme: target: fix buffer overflow
nvme: don't send keep-alives to the discovery controller
nvme: unexport nvme_start_keep_alive
nvme-loop: fix kernel oops in case of unhandled command
nvme: enforce 64bit offset for nvme_get_log_ext fn
sr: get/drop reference to device in revalidate and check_events
blk-mq: Revert "blk-mq: reimplement blk_mq_hw_queue_mapped"
blk-mq: Avoid that submitting a bio concurrently with device removal triggers a crash
backing: silence compiler warning using __printf
blk-mq: remove code for dealing with remapping queue
blk-mq: reimplement blk_mq_hw_queue_mapped
blk-mq: don't check queue mapped in __blk_mq_delay_run_hw_queue()
...
Linus Torvalds [Fri, 13 Apr 2018 22:13:18 +0000 (15:13 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:
- hot bugfix for i801 to make laptops with strange BIOS reboot again
when using SMBUS Host notify
- change to MAINTAINERS creating a specific fallback entry for I2C host
drivers and settings its status to "Odd fixes"
- a long overdue param checking for the I2C core
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: add param sanity check to i2c_transfer()
MAINTAINERS: add maintainer for Renesas I2C related drivers
MAINTAINERS: remove me as maintainer for I2C host drivers
i2c: i801: Restore configuration at shutdown
i2c: i801: Save register SMBSLVCMD value only once
Linus Torvalds [Fri, 13 Apr 2018 19:27:11 +0000 (12:27 -0700)]
Merge tag 'sh-for-4.17' of git://git.libc.org/linux-sh
Pull arch/sh updates from Rich Felker:
"Fixes for bugs in futex, device tree, and userspace breakpoint traps,
and for PCI issues on SH7786"
* tag 'sh-for-4.17' of git://git.libc.org/linux-sh:
arch/sh: pcie-sh7786: handle non-zero DMA offset
arch/sh: pcie-sh7786: adjust the memory mapping
arch/sh: pcie-sh7786: adjust PCI MEM and IO regions
arch/sh: pcie-sh7786: exclude unusable PCI MEM areas
arch/sh: pcie-sh7786: mark unavailable PCI resource as disabled
arch/sh: pci: don't use disabled resources
arch/sh: make the DMA mapping operations observe dev->dma_pfn_offset
arch/sh: add sh7786_mm_sel() function
sh: fix debug trap failure to process signals before return to user
sh: fix memory corruption of unflattened device tree
sh: fix futex FUTEX_OP_SET op on userspace addresses
Linus Torvalds [Fri, 13 Apr 2018 18:24:18 +0000 (11:24 -0700)]
Merge tag 'arm64-upstream' of git://git./linux/kernel/git/arm64/linux
Pull more arm64 updates from Will Deacon:
"A few late updates to address some issues arising from conflicts with
other trees:
- Removal of Qualcomm-specific Spectre-v2 mitigation in favour of the
generic SMCCC-based firmware call
- Fix EL2 hardening capability checking, which was bodged to reduce
conflicts with the KVM tree
- Add some currently unused assembler macros for managing SIMD
registers which will be used by some crypto code in the next merge
window"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: assembler: add macros to conditionally yield the NEON under PREEMPT
arm64: assembler: add utility macros to push/pop stack frames
arm64: Move the content of bpi.S to hyp-entry.S
arm64: Get rid of __smccc_workaround_1_hvc_*
arm64: capabilities: Rework EL2 vector hardening entry
arm64: KVM: Use SMCCC_ARCH_WORKAROUND_1 for Falkor BP hardening
Linus Torvalds [Fri, 13 Apr 2018 16:43:20 +0000 (09:43 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull more s390 updates from Martin Schwidefsky:
"Three notable larger changes next to the usual bug fixing:
- update the email addresses in MAINTAINERS for the s390 folks to use
the simpler linux.ibm.com domain instead of the old
linux.vnet.ibm.com
- an update for the zcrypt device driver that removes some old and
obsolete interfaces and add support for up to 256 crypto adapters
- a rework of the IPL aka boot code"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (23 commits)
s390: correct nospec auto detection init order
s390/zcrypt: Support up to 256 crypto adapters.
s390/zcrypt: Remove deprecated zcrypt proc interface.
s390/zcrypt: Remove deprecated ioctls.
s390/zcrypt: Make ap init functions static.
MAINTAINERS: update s390 maintainers email addresses
s390/ipl: remove reipl_method and dump_method
s390/ipl: correct kdump reipl block checksum calculation
s390/ipl: remove non-existing functions declaration
s390: assume diag308 set always works
s390/ipl: avoid adding scpdata to cmdline during ftp/dvd boot
s390/ipl: correct ipl parmblock valid checks
s390/ipl: rely on diag308 store to get ipl info
s390/ipl: move ipl_flags to ipl.c
s390/ipl: get rid of ipl_ssid and ipl_devno
s390/ipl: unite diag308 and scsi boot ipl blocks
s390/ipl: ensure loadparm valid flag is set
s390/qdio: lock device while installing IRQ handler
s390/qdio: clear intparm during shutdown
s390/ccwgroup: require at least one ccw device
...
Don Zickus [Wed, 11 Apr 2018 19:15:37 +0000 (15:15 -0400)]
kconfig: extend output of 'listnewconfig'
We at Red Hat/Fedora have generally tried to have a per file breakdown of
every config option we set. This makes it easy for us to add new options
when they are exposed and keep a changelog of why they were set.
A Fedora example is here:
https://src.fedoraproject.org/cgit/rpms/kernel.git/tree/configs/fedora/generic
Using various merge scripts, we build up a config file and run it through
'make listnewconfig' and 'make oldnoconfig'. The idea is to print out new
config options that haven't been manually set and use the default until
a patch is posted to set it properly.
To speed things up, it would be nice to make it easier to generate a
patch to post the default setting. The output of 'make listnewconfig'
has two issues that limit us:
- it doesn't provide the default value
- it doesn't provide the new 'choice' options that get flagged in
'oldconfig'
This patch extends 'listnewconfig' to address the above two issues.
This allows us to run a script
make listnewconfig | rhconfig-tool -o patches; git send-email patches/
The output of 'make listnewconfig':
CONFIG_NET_EMATCH_IPT
CONFIG_IPVLAN
CONFIG_ICE
CONFIG_NET_VENDOR_NI
CONFIG_IEEE802154_MCR20A
CONFIG_IR_IMON_DECODER
CONFIG_IR_IMON_RAW
The new output of 'make listnewconfig':
CONFIG_KERNEL_XZ=n
CONFIG_KERNEL_LZO=n
CONFIG_NET_EMATCH_IPT=n
CONFIG_IPVLAN=n
CONFIG_ICE=n
CONFIG_NET_VENDOR_NI=y
CONFIG_IEEE802154_MCR20A=n
CONFIG_IR_IMON_DECODER=n
CONFIG_IR_IMON_RAW=n
Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Javier Martinez Canillas [Wed, 11 Apr 2018 18:15:24 +0000 (20:15 +0200)]
kbuild: rpm-pkg: use kernel-install as a fallback for new-kernel-pkg
The new-kernel-pkg script is only present when grubby is installed, but it
may not always be the case. So if the script isn't present, attempt to use
the kernel-install script as a fallback instead.
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Qu Wenruo [Thu, 12 Apr 2018 22:32:47 +0000 (06:32 +0800)]
btrfs: Only check first key for committed tree blocks
When looping btrfs/074 with many cpus (>= 8), it's possible to trigger
kernel warning due to first key verification:
[ 4239.523446] WARNING: CPU: 5 PID: 2381 at fs/btrfs/disk-io.c:460 btree_read_extent_buffer_pages+0x1ad/0x210
[ 4239.523830] Modules linked in:
[ 4239.524630] RIP: 0010:btree_read_extent_buffer_pages+0x1ad/0x210
[ 4239.527101] Call Trace:
[ 4239.527251] read_tree_block+0x42/0x70
[ 4239.527434] read_node_slot+0xd2/0x110
[ 4239.527632] push_leaf_right+0xad/0x1b0
[ 4239.527809] split_leaf+0x4ea/0x700
[ 4239.527988] ? leaf_space_used+0xbc/0xe0
[ 4239.528192] ? btrfs_set_lock_blocking_rw+0x99/0xb0
[ 4239.528416] btrfs_search_slot+0x8cc/0xa40
[ 4239.528605] btrfs_insert_empty_items+0x71/0xc0
[ 4239.528798] __btrfs_run_delayed_refs+0xa98/0x1680
[ 4239.529013] btrfs_run_delayed_refs+0x10b/0x1b0
[ 4239.529205] btrfs_commit_transaction+0x33/0xaf0
[ 4239.529445] ? start_transaction+0xa8/0x4f0
[ 4239.529630] btrfs_alloc_data_chunk_ondemand+0x1b0/0x4e0
[ 4239.529833] btrfs_check_data_free_space+0x54/0xa0
[ 4239.530045] btrfs_delalloc_reserve_space+0x25/0x70
[ 4239.531907] btrfs_direct_IO+0x233/0x3d0
[ 4239.532098] generic_file_direct_write+0xcb/0x170
[ 4239.532296] btrfs_file_write_iter+0x2bb/0x5f4
[ 4239.532491] aio_write+0xe2/0x180
[ 4239.532669] ? lock_acquire+0xac/0x1e0
[ 4239.532839] ? __might_fault+0x3e/0x90
[ 4239.533032] do_io_submit+0x594/0x860
[ 4239.533223] ? do_io_submit+0x594/0x860
[ 4239.533398] SyS_io_submit+0x10/0x20
[ 4239.533560] ? SyS_io_submit+0x10/0x20
[ 4239.533729] do_syscall_64+0x75/0x1d0
[ 4239.533979] entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 4239.534182] RIP: 0033:0x7f8519741697
The problem here is, at btree_read_extent_buffer_pages() we don't have
acquired read/write lock on that extent buffer, only basic info like
level/bytenr is reliable.
So race condition leads to such false alert.
However in current call site, it's impossible to acquire proper lock
without race window.
To fix the problem, we only verify first key for committed tree blocks
(whose generation is no larger than fs_info->last_trans_committed), so
the content of such tree blocks will not change and there is no need to
get read/write lock.
Reported-by: Nikolay Borisov <nborisov@suse.com>
Fixes:
581c1760415c ("btrfs: Validate child tree block's level and first key")
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Michael Ellerman [Thu, 12 Apr 2018 12:24:45 +0000 (22:24 +1000)]
powerpc/64s: Fix CPU_FTRS_ALWAYS vs DT CPU features
The cpu_has_feature() mechanism has an optimisation where at build
time we construct a mask of the CPU feature bits that will always be
true for the given .config, based on the platform/bitness/etc. that we
are building for.
That is incompatible with DT CPU features, where the set of CPU
features is dependent on feature flags that are given to us by
firmware.
The result is that some feature bits can not be *disabled* by DT CPU
features. Or more accurately, they can be disabled but they will still
appear in the ALWAYS mask, meaning cpu_has_feature() will always
return true for them.
In the past this hasn't really been a problem because on Book3S
64 (where we support DT CPU features), the set of ALWAYS bits has been
very small. That was because we always built for POWER4 and later,
meaning the set of common bits was small.
The only bit that could be cleared by DT CPU features that was also in
the ALWAYS mask was CPU_FTR_NODSISRALIGN, and that was only used in
the alignment handler to create a fake DSISR. That code was itself
deleted in
31bfdb036f12 ("powerpc: Use instruction emulation
infrastructure to handle alignment faults") (Sep 2017).
However the set of ALWAYS features changed with the recent commit
db5ae1c155af ("powerpc/64s: Refine feature sets for little endian
builds") which restricted the set of feature flags when building
little endian to Power7 or later. That caused the ALWAYS mask to
become much larger for little endian builds.
The result is that the following feature bits can currently not
be *disabled* by DT CPU features:
CPU_FTR_REAL_LE, CPU_FTR_MMCRA, CPU_FTR_CTRL, CPU_FTR_SMT,
CPU_FTR_PURR, CPU_FTR_SPURR, CPU_FTR_DSCR, CPU_FTR_PKEY,
CPU_FTR_VMX_COPY, CPU_FTR_CFAR, CPU_FTR_HAS_PPR.
To fix it we need to mask the set of ALWAYS features with the base set
of DT CPU features, ie. the features that are always enabled by DT CPU
features. That way there are no bits in the ALWAYS mask that are not
also always set by DT CPU features.
Fixes:
db5ae1c155af ("powerpc/64s: Refine feature sets for little endian builds")
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Jean Delvare [Fri, 13 Apr 2018 13:37:59 +0000 (15:37 +0200)]
firmware: dmi_scan: Use lowercase letters for UUID
RFC 4122 asks for letters a-f in UUID to be lowercase. Follow this
recommendation.
Suggested by Paul Dagnelie at:
https://savannah.nongnu.org/bugs/index.php?53569
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Alex Hung [Fri, 13 Apr 2018 13:37:59 +0000 (15:37 +0200)]
firmware: dmi_scan: Add DMI_OEM_STRING support to dmi_matches
OEM strings are defined by each OEM and they contain customized and
useful OEM information. Supporting it provides more flexible uses of
the dmi_matches function.
Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Jean Delvare [Fri, 13 Apr 2018 13:37:59 +0000 (15:37 +0200)]
firmware: dmi_scan: Fix UUID length safety check
The test which ensures that the DMI type 1 structure is long enough
to hold the UUID is off by one. It would fail if the structure is
exactly 24 bytes long, while that's sufficient to hold the UUID.
I don't expect this bug to cause problem in practice because all
implementations I have seen had length 8, 25 or 27 bytes, in line
with the SMBIOS specifications. But let's fix it still.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes:
a814c3597a6b ("firmware: dmi_scan: Check DMI structure length")
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Zhang Rui [Fri, 13 Apr 2018 06:11:53 +0000 (14:11 +0800)]
Merge branches 'thermal-core' and 'thermal-soc' into next
Linus Torvalds [Fri, 13 Apr 2018 03:56:10 +0000 (20:56 -0700)]
Merge tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"One omap, and one alsa pm fix (we merged the breaking patch via drm
tree).
Otherwise it's two bunches of amdgpu fixes, removing an unneeded file,
some DC fixes, HDMI audio regression fix, and some vega12 fixes"
* tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux: (27 commits)
Revert "drm/amd/display: disable CRTCs with NULL FB on their primary plane (V2)"
Revert "drm/amd/display: fix dereferencing possible ERR_PTR()"
drm/amd/display: Fix regamma not affecting full-intensity color values
drm/amd/display: Fix FBC text console corruption
drm/amd/display: Only register backlight device if embedded panel connected
drm/amd/display: fix brightness level after resume from suspend
drm/amd/display: HDMI has no sound after Panel power off/on
drm/amdgpu: add MP1 and THM hw ip base reg offset
drm/amdgpu: fix null pointer panic with direct fw loading on gpu reset
drm/radeon: add PX quirk for Asus K73TK
drm/omap: fix crash if there's no video PLL
drm/amdgpu: Fix memory leaks at amdgpu_init() error path
drm/amdgpu: Fix PCIe lane width calculation
drm/radeon: Fix PCIe lane width calculation
drm/amdgpu/si: implement get/set pcie_lanes asic callback
drm/amdgpu: Add support for SRBM selection v3
Revert "drm/amdgpu: Don't change preferred domian when fallback GTT v5"
drm/amd/powerply: fix power reading on Fiji
drm/amd/powerplay: Enable ACG SS feature
drm/amdgpu/sdma: fix mask in emit_pipeline_sync
...
Linus Torvalds [Fri, 13 Apr 2018 03:54:01 +0000 (20:54 -0700)]
Merge tag 'trace-v4.17-2' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"A few clean ups and bug fixes:
- replace open coded "ARRAY_SIZE()" with macro
- updates to uprobes
- bug fix for perf event filter on error path"
* tag 'trace-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Enforce passing in filter=NULL to create_filter()
trace_uprobe: Simplify probes_seq_show()
trace_uprobe: Use %lx to display offset
tracing/uprobe: Add support for overlayfs
tracing: Use ARRAY_SIZE() macro instead of open coding it
Alexey Dobriyan [Thu, 12 Apr 2018 20:31:17 +0000 (23:31 +0300)]
proc: fixup copyright sign
Add copyright in two files before they get autorubberstamped.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 13 Apr 2018 03:50:38 +0000 (20:50 -0700)]
Merge tag 'pci-v4.17-changes-2' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- mark Extended Tags as broken on Broadcom HT1100 and HT2000 Root Ports
to fix drm/Xorg hangs and unresponsive keyboards (Sinan Kaya)
- remove useless messages during resource reassignment (Desnes A. Nunes
do Rosario)
* tag 'pci-v4.17-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Remove messages about reassigning resources
PCI: Mark Broadcom HT1100 and HT2000 Root Port Extended Tags as broken
Ronnie Sahlberg [Mon, 9 Apr 2018 08:06:30 +0000 (18:06 +1000)]
cifs: change validate_buf to validate_iov
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Ronnie Sahlberg [Mon, 9 Apr 2018 08:06:31 +0000 (18:06 +1000)]
cifs: remove rfc1002 hardcoded constants from cifs_discard_remaining_data()
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Ronnie Sahlberg [Thu, 12 Apr 2018 23:03:19 +0000 (09:03 +1000)]
cifs: Change SMB2_open to return an iov for the error parameter
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Ronnie Sahlberg [Mon, 9 Apr 2018 08:06:28 +0000 (18:06 +1000)]
cifs: add resp_buf_size to the mid_q_entry structure
and get rid of some more calls to get_rfc1002_length()
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Steve French [Fri, 13 Apr 2018 01:32:13 +0000 (20:32 -0500)]
smb3.11: replace a 4 with server->vals->header_preamble_size
More cleanup of use of hardcoded 4 byte RFC1001 field size
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Linus Torvalds [Fri, 13 Apr 2018 00:07:04 +0000 (17:07 -0700)]
Merge branch 'parisc-4.17-2' of git://git./linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
- fix panic when halting system via "shutdown -h now"
- drop own coding in favour of generic CONFIG_COMPAT_BINFMT_ELF
implementation
- add FPE_CONDTRAP constant: last outstanding parisc-specific cleanup
for Eric Biedermans siginfo patches
- move some functions to .init and some to .text.hot linker sections
* 'parisc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Prevent panic at system halt
parisc: Switch to generic COMPAT_BINFMT_ELF
parisc: Move cache flush functions into .text.hot section
parisc/signal: Add FPE_CONDTRAP for conditional trap handling
Thomas Petazzoni [Mon, 4 Dec 2017 15:09:07 +0000 (16:09 +0100)]
arch/sh: pcie-sh7786: handle non-zero DMA offset
On SuperH, the base of the physical memory might be different from
zero. In this case, PCI address zero will map to a non-zero physical
address. In order to make sure that the DMA mapping API takes care of
this DMA offset, we must fill in the dev->dma_pfn_offset field for PCI
devices. This gets done in the pcibios_bus_add_device() hook, called
for each new PCI device detected.
The dma_pfn_offset global variable is re-calculated for every PCI
controller available on the platform, but that's not an issue because
its value will each time be exactly the same, as it only depends on
the memory start address and memory size.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>