Arik Nemtsov [Mon, 29 Aug 2016 09:37:35 +0000 (12:37 +0300)]
mac80211: TDLS: don't require beaconing for AP BW
Stop downgrading TDLS chandef when reaching the AP BW. The AP provides
the necessary regulatory protection in this case.
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=153961, which
reported an infinite loop here.
Reported-by: Kamil Toman <kamil.toman@gmail.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 8 Aug 2016 06:45:33 +0000 (08:45 +0200)]
Revert "wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel"
This reverts commit
3d5fdff46c4b2b9534fa2f9fc78e90a48e0ff724.
Ben Hutchings pointed out that the commit isn't safe since it assumes
that the structure used by the driver is iw_point, when in fact there's
no way to know about that.
Fortunately, the only driver in the tree that ever runs this code path
is the wilc1000 staging driver, so it doesn't really matter.
Clearly I should have investigated this better before applying, sorry.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org [though I guess it doesn't matter much]
Fixes:
3d5fdff46c4b ("wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Maxim Altshul [Thu, 4 Aug 2016 12:43:04 +0000 (15:43 +0300)]
mac80211: Add ieee80211_hw pointer to get_expected_throughput
The variable is added to allow the driver an easy access to
it's own hw->priv when the op is invoked.
This fixes a crash in wlcore because it was relying on a
station pointer that wasn't initialized yet. It's the wrong
way to fix the crash, but it solves the problem for now and
it does make sense to have the hw pointer here.
Signed-off-by: Maxim Altshul <maxim.altshul@ti.com>
[rewrite commit message, fix indentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Masashi Honma [Wed, 3 Aug 2016 01:07:44 +0000 (10:07 +0900)]
nl80211: correct checks for NL80211_MESHCONF_HT_OPMODE value
Previously, NL80211_MESHCONF_HT_OPMODE validation rejected correct
flag combinations, e.g. IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED |
IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT.
Doing just a range-check allows setting flags that don't exist (0x8)
and invalid flag combinations.
Implements some checks based on IEEE 802.11 2012 8.4.2.59 "HT
Operation element".
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
[reword commit message, simplify a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Masashi Honma [Tue, 2 Aug 2016 08:16:57 +0000 (17:16 +0900)]
mac80211: End the MPSP even if EOSP frame was not acked
If QoS frame with EOSP (end of service period) subfield=1 sent by local
peer was not acked by remote peer, local peer did not end the MPSP. This
prevents local peer from going to DOZE state. And if the remote peer
goes away without closing connection, local peer continues AWAKE state
and wastes battery.
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Felix Fietkau [Tue, 2 Aug 2016 09:13:41 +0000 (11:13 +0200)]
mac80211: fix purging multicast PS buffer queue
The code currently assumes that buffered multicast PS frames don't have
a pending ACK frame for tx status reporting.
However, hostapd sends a broadcast deauth frame on teardown for which tx
status is requested. This can lead to the "Have pending ack frames"
warning on module reload.
Fix this by using ieee80211_free_txskb/ieee80211_purge_tx_queue.
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Maital Hahn [Wed, 13 Jul 2016 11:44:41 +0000 (14:44 +0300)]
mac80211: mesh: flush stations before beacons are stopped
Some drivers (e.g. wl18xx) expect that the last stage in the
de-initialization process will be stopping the beacons, similar to AP flow.
Update ieee80211_stop_mesh() flow accordingly.
As peers can be removed dynamically, this would not impact other drivers.
Tested also on Ralink RT3572 chipset.
Signed-off-by: Maital Hahn <maitalm@ti.com>
Signed-off-by: Yaniv Machani <yanivma@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Felix Fietkau [Mon, 11 Jul 2016 13:09:15 +0000 (15:09 +0200)]
mac80211: fix check for buffered powersave frames with txq
The logic was inverted here, set the bit if frames are pending.
Fixes:
ba8c3d6f16a1 ("mac80211: add an intermediate software queue implementation")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Colin Ian King [Sun, 17 Jul 2016 18:55:27 +0000 (19:55 +0100)]
cfg80211: fix missing break in NL8211_CHAN_WIDTH_80P80 case
The switch on chandef->width is missing a break on the
NL8211_CHAN_WIDTH_80P80 case; currently we get a WARN_ON when
center_freq2 is non-zero because of the missing break.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Alexander Stein [Fri, 29 Jul 2016 10:12:08 +0000 (12:12 +0200)]
phy/micrel: Change phy_id_mask for KSZ8721
There are KSZ8721 PHYs with phy_id 0x00221619. In order to detect them
as PHY_ID_KSZ8001 compatible while staying different to PHY_ID_KSZ9021
ignore the last two bits when matching PHY_ID
Signed-off-by: Alexander Stein <alexanders83@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 1 Aug 2016 03:34:06 +0000 (20:34 -0700)]
Merge branch 'r8169-fixes'
Chunhao Lin says:
====================
r8169: fix 3 runtime pm related issues.
v2:
use "struct device *d = &tp->pci_dev->dev" instead of "struct pci_dev *pdev = tp->pci_dev"
v1:
This series of patches fix 3 runtime pm related issues that are listed below.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Chun-Hao Lin [Fri, 29 Jul 2016 08:37:56 +0000 (16:37 +0800)]
r8169: fix nic may not work after changing mac address.
When there is no AC power, NIC may not work after changing mac address.
Please refer to following link.
http://www.spinics.net/lists/netdev/msg356572.html
This issue is caused by runtime power management. When there is no AC
power, if we put NIC down (ifconfig down), the driver will be in runtime
suspend state and hardware will be put into D3 state. During this time,
driver cannot access hardware regisers. So if you set new mac address
during this time, it will not be set to hardware. After resume, NIC will
keep using the old mac address and the network will not work normally.
In this patch I add detecting runtime pm status when setting mac address.
If driver is in runtime suspend state, it will skip setting mac address, keep
the new mac address, and set the new mac address during runtime resume.
Signed-off-by: Chunhao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chun-Hao Lin [Fri, 29 Jul 2016 08:37:55 +0000 (16:37 +0800)]
r8169: add checking driver's runtime pm status in rtl8169_get_ethtool_stats()
Not to call rtl8169_update_counters() to dump tally counter when driver
is in runtime suspend state.
Calling rtl8169_update_counters() in runtime suspend state will produce
warning message "rtl_counters_cond == 1 (loop: 1000, delay: 10)".
Signed-off-by: Chunhao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chun-Hao Lin [Fri, 29 Jul 2016 08:37:54 +0000 (16:37 +0800)]
r8169: fix kernel log spam when set or get hardware wol setting.
NIC will be put into D3 state during runtime suspend state. When set or
get hardware wol setting, driver will write or read hardware registers.
If we set or get hardware wol setting in runtime suspend state, because
NIC will in D3 state, the hardware registers read by driver will return all
0xff. That will let driver thinking register flag is not toggled and
then prints the warning message "rtl_counters_cond == 1 (loop: 1000,
delay: 10)" to kernel log.
For fixing this issue, add checking driver's pm runtime status in
rtl8169_get_wol() and rtl8169_set_wol().
Signed-off-by: Chunhao Lin <hau@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Fri, 29 Jul 2016 19:35:57 +0000 (12:35 -0700)]
net: dsa: bcm_sf2: Unwind errors in correct order
In case we cannot complete bcm_sf2_sw_setup() for any reason, and we
go to the out_unmap label, but the MDIO bus has not been registered yet,
we will hit the BUG condition in drivers/net/phy/mdio_bus.c about the
bus not being registered. Fix this by dedicating a specific lable for
when we fail after the MDIO bus has been successfully registered.
Fixes:
461cd1b03e32 ("net: dsa: bcm_sf2: Register our slave MDIO bus")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Sat, 30 Jul 2016 16:47:07 +0000 (17:47 +0100)]
net: tulip: fix spelling mistake: "attemping" -> "attempting"
trivial fix to spelling mistake in printk message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sat, 30 Jul 2016 06:14:41 +0000 (14:14 +0800)]
sctp: allow receiving msg when TCP-style sk is in CLOSED state
Commit
141ddefce7c8 ("sctp: change sk state to CLOSED instead of
CLOSING in sctp_sock_migrate") changed sk state to CLOSED if the
assoc is closed when sctp_accept clones a new sk.
If there is still data in sk receive queue, users will not be able
to read it any more, as sctp_recvmsg returns directly if sk state
is CLOSED.
This patch is to add CLOSED state check in sctp_recvmsg to allow
reading data from TCP-style sk with CLOSED state as what TCP does.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sat, 30 Jul 2016 06:09:09 +0000 (14:09 +0800)]
sctp: allow delivering notifications after receiving SHUTDOWN
Prior to this patch, once sctp received SHUTDOWN or shutdown with RD,
sk->sk_shutdown would be set with RCV_SHUTDOWN, and all events would
be dropped in sctp_ulpq_tail_event(). It would cause:
1. some notifications couldn't be received by users. like
SCTP_SHUTDOWN_COMP generated by sctp_sf_do_4_C().
2. sctp would also never trigger sk_data_ready when the association
was closed, making it harder to identify the end of the association
by calling recvmsg() and getting an EOF. It was not convenient for
kernel users.
The check here should be stopping delivering DATA chunks after receiving
SHUTDOWN, and stopping delivering ANY chunks after sctp_close().
So this patch is to allow notifications to enqueue into receive queue
even if sk->sk_shutdown is set to RCV_SHUTDOWN in sctp_ulpq_tail_event,
but if sk->sk_shutdown == RCV_SHUTDOWN | SEND_SHUTDOWN, it drops all
events.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sat, 30 Jul 2016 05:58:35 +0000 (13:58 +0800)]
sctp: fix the issue sctp requeue auth chunk incorrectly
sctp needs to queue auth chunk back when we know that we are going
to generate another segment. But commit
f1533cce60d1 ("sctp: fix
panic when sending auth chunks") requeues the last chunk processed
which is probably not the auth chunk.
It causes panic when calculating the MAC in sctp_auth_calculate_hmac(),
as the incorrect offset of the auth chunk in skb->data.
This fix is to requeue it by using packet->auth.
Fixes:
f1533cce60d1 ("sctp: fix panic when sending auth chunks")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Soheil Hassas Yeganeh [Fri, 29 Jul 2016 13:34:02 +0000 (09:34 -0400)]
tcp: consider recv buf for the initial window scale
tcp_select_initial_window() intends to advertise a window
scaling for the maximum possible window size. To do so,
it considers the maximum of net.ipv4.tcp_rmem[2] and
net.core.rmem_max as the only possible upper-bounds.
However, users with CAP_NET_ADMIN can use SO_RCVBUFFORCE
to set the socket's receive buffer size to values
larger than net.ipv4.tcp_rmem[2] and net.core.rmem_max.
Thus, SO_RCVBUFFORCE is effectively ignored by
tcp_select_initial_window().
To fix this, consider the maximum of net.ipv4.tcp_rmem[2],
net.core.rmem_max and socket's initial buffer space.
Fixes:
b0573dea1fb3 ("[NET]: Introduce SO_{SND,RCV}BUFFORCE socket options")
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Suggested-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 31 Jul 2016 04:11:08 +0000 (21:11 -0700)]
Merge branch 'macsec-fixes'
Sabrina Dubroca says:
====================
macsec: reference counting fixes
Patch 1 adds explicit reference counting on RXSCs, instead of the
current implicit reference counting using the RXSA's refcount.
Patch 2 fixes possible kernel panics during module unload caused by an
RCU callback that schedules another RCU callback, which the
rcu_barrier() added in
b196c22af5c3 ("macsec: add rcu_barrier() on
module exit") didn't protect against.
Patch 3 fixes a refcounting issue with the underlying device for a
macsec device when link creation fails.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 29 Jul 2016 13:37:55 +0000 (15:37 +0200)]
macsec: fix negative refcnt on parent link
When creation of a macsec device fails because an identical device
already exists on this link, the current code decrements the refcnt on
the parent link (in ->destructor for the macsec device), but it had not
been incremented yet.
Move the dev_hold(parent_link) call earlier during macsec device
creation.
Fixes:
c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 29 Jul 2016 13:37:54 +0000 (15:37 +0200)]
macsec: RXSAs don't need to hold a reference on RXSCs
Following the previous patch, RXSCs are held and properly refcounted in
the RX path (instead of being implicitly held by their SA), so the SA
doesn't need to hold a reference on its parent RXSC.
This also avoids panics on module unload caused by the double layer of
RCU callbacks (call_rcu frees the RXSA, which puts the final reference
on the RXSC and allows to free it in its own call_rcu) that commit
b196c22af5c3 ("macsec: add rcu_barrier() on module exit") didn't
protect against.
There were also some refcounting bugs in macsec_add_rxsa where I didn't
put the reference on the RXSC on the error paths, which would lead to
memory leaks.
Fixes:
c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 29 Jul 2016 13:37:53 +0000 (15:37 +0200)]
macsec: fix reference counting on RXSC in macsec_handle_frame
Currently, we lookup the RXSC without taking a reference on it. The
RXSA holds a reference on the RXSC, but the SA and SC could still both
disappear before we take a reference on the SA.
Take a reference on the RXSC in macsec_handle_frame.
Fixes:
c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 31 Jul 2016 04:00:34 +0000 (21:00 -0700)]
Merge branch 'cpsw-fixes'
Grygorii Strashko says:
====================
drivers: net: cpsw: fix driver loading/unloading
This series fixes set of isssues observed when CPSW driver module is unloaded/loaded:
1) rmmod: deadlock in cpdma_ctlr_destroy
2) rmmod: L3 back-trace and crash if all net interfaces are down, because CPSW
can be powerred down by PM runtime in this case.
3) insmod: mdio device is not recreated on next insmod
- need to use of_platform_depopulate() in cpsw_remove().
4) rmmod: system crash on omap_device removal
Tested on: am437x-idk, am57xx-beagle-x15
Changes in v2:
- build warning fixed
- added fix for correct omap_device removal
Link on v1:
https://lkml.org/lkml/2016/7/22/240
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Thu, 28 Jul 2016 17:50:37 +0000 (20:50 +0300)]
ARM: OMAP2+: omap_device: fix crash on omap_device removal
Below call chain causes system crash when OMAP device is
removed by calling of_platform_depopulate()/device_del():
device_del()
- blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_DEL_DEVICE, dev);
- _omap_device_notifier_call()
- omap_device_delete()
- od->pdev->archdata.od = NULL;
kfree(od->hwmods);
kfree(od);
- bus_remove_device()
- device_release_driver()
- __device_release_driver()
- pm_runtime_get_sync()
- _od_runtime_resume()
- omap_hwmod_enable() <- OOPS od's delted already
Backtrace:
Unable to handle kernel NULL pointer dereference at virtual address
0000000d
pgd =
eb100000
[
0000000d] *pgd=
ad6e1831, *pte=
00000000, *ppte=
00000000
Internal error: Oops: 17 [#1] PREEMPT SMP ARM
CPU: 1 PID: 1273 Comm: modprobe Not tainted 4.4.15-rt19-00115-ge4d3cd3-dirty #68
Hardware name: Generic DRA74X (Flattened Device Tree)
task:
eb1ee800 ti:
ec962000 task.ti:
ec962000
PC is at omap_device_enable+0x10/0x90
LR is at _od_runtime_resume+0x10/0x24
[...]
[<
c00299dc>] (omap_device_enable) from [<
c0029a6c>] (_od_runtime_resume+0x10/0x24)
[<
c0029a6c>] (_od_runtime_resume) from [<
c04ad404>] (__rpm_callback+0x20/0x34)
[<
c04ad404>] (__rpm_callback) from [<
c04ad438>] (rpm_callback+0x20/0x80)
[<
c04ad438>] (rpm_callback) from [<
c04aee28>] (rpm_resume+0x48c/0x964)
[<
c04aee28>] (rpm_resume) from [<
c04af360>] (__pm_runtime_resume+0x60/0x88)
[<
c04af360>] (__pm_runtime_resume) from [<
c04a4974>] (__device_release_driver+0x30/0x100)
[<
c04a4974>] (__device_release_driver) from [<
c04a4a60>] (device_release_driver+0x1c/0x28)
[<
c04a4a60>] (device_release_driver) from [<
c04a38c0>] (bus_remove_device+0xec/0x144)
[<
c04a38c0>] (bus_remove_device) from [<
c04a0764>] (device_del+0x10c/0x210)
[<
c04a0764>] (device_del) from [<
c04a67b0>] (platform_device_del+0x18/0x84)
[<
c04a67b0>] (platform_device_del) from [<
c04a6828>] (platform_device_unregister+0xc/0x20)
[<
c04a6828>] (platform_device_unregister) from [<
c05adcfc>] (of_platform_device_destroy+0x8c/0x90)
[<
c05adcfc>] (of_platform_device_destroy) from [<
c04a02f0>] (device_for_each_child+0x4c/0x78)
[<
c04a02f0>] (device_for_each_child) from [<
c05adc5c>] (of_platform_depopulate+0x30/0x44)
[<
c05adc5c>] (of_platform_depopulate) from [<
bf123920>] (cpsw_remove+0x68/0xf4 [ti_cpsw])
[<
bf123920>] (cpsw_remove [ti_cpsw]) from [<
c04a68d8>] (platform_drv_remove+0x24/0x3c)
[<
c04a68d8>] (platform_drv_remove) from [<
c04a49c8>] (__device_release_driver+0x84/0x100)
[<
c04a49c8>] (__device_release_driver) from [<
c04a4b20>] (driver_detach+0xac/0xb0)
[<
c04a4b20>] (driver_detach) from [<
c04a3be8>] (bus_remove_driver+0x60/0xd4)
[<
c04a3be8>] (bus_remove_driver) from [<
c00d9870>] (SyS_delete_module+0x184/0x20c)
[<
c00d9870>] (SyS_delete_module) from [<
c0010540>] (ret_fast_syscall+0x0/0x1c)
Code:
e3500000 e92d4070 1590630c 01a06000 (
e5d6300d)
Hence, fix it by using BUS_NOTIFY_REMOVED_DEVICE event for OMAP device
deletion which is sent when DD has finished processing of device
deletion.
Cc: Tony Lindgren <tony@atomide.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Thu, 28 Jul 2016 17:50:36 +0000 (20:50 +0300)]
drivers: net: cpsw: use of_platform_depopulate()
Use of_platform_depopulate() in cpsw_remove() instead of
of_device_unregister(), because CSPW child devices will not be
recreated otherwise on next insmod. of_platform_depopulate() is
correct way now as it will ensure that all steps done in
of_platform_populate() are reverted, including cleaning up of
OF_POPULATED flag.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Thu, 28 Jul 2016 17:50:35 +0000 (20:50 +0300)]
drivers: net: cpsw: fix wrong regs access in cpsw_remove
The L3 error will be generated and system will crash during unloading
of CPSW driver if CPSW is used as module and ethX devices are down.
This happens because CPSW can be power off by PM runtime now when ethX
devices are down.
Hence, ensure that CPSW powered up by PM runtime before performing any
deinitialization actions which require CPSW registers access. In case
of PM runtime error just leave cpsw_remove() as we can't do anything
anymore.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Grygorii Strashko [Thu, 28 Jul 2016 17:50:34 +0000 (20:50 +0300)]
net: ethernet: ti: cpdma: fix lockup in cpdma_ctlr_destroy()
Fix deadlock in cpdma_ctlr_destroy() which is triggered now on
cpsw module removal:
cpsw_remove()
- cpdma_ctlr_destroy()
- spin_lock_irqsave(&ctlr->lock, flags)
- cpdma_ctlr_stop()
- spin_lock_irqsave(&ctlr->lock, flags);
- cpdma_chan_destroy()
- spin_lock_irqsave(&ctlr->lock, flags);
The issue has not been observed before because CPDMA channels have
been destroyed manually by CPSW until commit
d941ebe88a41 ("net:
ethernet: ti: cpsw: use destroy ctlr to destroy channels") was merged.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Thu, 28 Jul 2016 16:19:03 +0000 (16:19 +0000)]
net: ipv6: use list_move instead of list_del/list_add
Using list_move() instead of list_del() + list_add().
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hariprasad Shenai [Thu, 28 Jul 2016 07:58:57 +0000 (13:28 +0530)]
cxgb4/cxgb4vf: Fixes regression in perf when tx vlan offload is disabled
The commit
637d3e997351 ("cxgb4: Discard the packet if the length is
greater than mtu") introduced a regression in the VLAN interface
performance when Tx VLAN offload is disabled.
Check if skb is tagged, regardless of whether it is hardware accelerated
or not. Presently we were checking only for hardware acclereated one,
which caused performance to drop to ~0.17Mbps on a 10GbE adapter for
VLAN interface, when tx vlan offload is turned off using ethtool.
The ethernet head length calculation was going wrong in this case, and
driver ended up dropping packets.
Fixes:
637d3e997351 ("cxgb4: Discard the packet if the length is greater than mtu")
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Thu, 28 Jul 2016 02:12:17 +0000 (02:12 +0000)]
drivers: net: phy: xgene: Remove redundant dev_err call in xgene_mdio_probe()
There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Acked-By: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Thu, 28 Jul 2016 02:07:49 +0000 (02:07 +0000)]
tipc: fix imbalance read_unlock_bh in __tipc_nl_add_monitor()
In the error handling case of nla_nest_start() failed read_unlock_bh()
is called to unlock a lock that had not been taken yet. sparse warns
about the context imbalance as the following:
net/tipc/monitor.c:799:23: warning:
context imbalance in '__tipc_nl_add_monitor' - different lock contexts for basic block
Fixes:
cf6f7e1d5109 ('tipc: dump monitor attributes')
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 31 Jul 2016 03:34:13 +0000 (20:34 -0700)]
Merge branch 'qed-fixes'
Yuval Mintz says:
====================
qed*: Small fixes series
This contains several small [and straight-forward] fixes to qed*
drivers.
Please consider applying this to `net'.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Wed, 27 Jul 2016 11:45:24 +0000 (14:45 +0300)]
qed: Prevent over-usage of vlan credits by PF
Each PF/VF has a limited number of vlan filters for
configuration purposes; This information is passed to qede
and is used to prevent over-usage - once a vlan is to be
configured and no filter credit is available, the driver
would switch into working in vlan-promisc mode.
Problem is the credit pool is shared by both PFs and VFs,
and currently PFs aren't deducting the filters that are
reserved for their VFs from their quota, which may lead
to some vlan filters failing unknowingly due to lack of credit.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Wed, 27 Jul 2016 11:45:23 +0000 (14:45 +0300)]
qed: Correct min bandwidth for 100g
Driver uses reverse logic when checking if minimum
bandwidth configuration applied, causing it to
configure the guarantee only on the first hw-function.
Fixes:
a0d26d5a4fc8 ("qed*: Don't reset statistics on inner reload")
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Wed, 27 Jul 2016 11:45:22 +0000 (14:45 +0300)]
qede: Reset statistics on explicit down
Adding the necessary logic to prevet statistics reset
on inner-reload introduced a bug, and now statistics
are reset only when re-probing the driver.
Fixes:
a0d26d5a4fc8e ("qed*: Don't reset statistics on inner reload")
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Wed, 27 Jul 2016 11:45:21 +0000 (14:45 +0300)]
qed: Don't over-do producer cleanup for Rx
Before requesting the firmware to start Rx queues,
driver goes and sets the queue producer in the device to 0.
But while the producer is 32-bit, the driver currently clears 64 bits,
effectively zeroing an additional CID's producer as well.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Wed, 27 Jul 2016 11:45:20 +0000 (14:45 +0300)]
qed: Fix removal of spoof checking for VFs
Driver has reverse logic for checking the result of the
spoof-checking configuration. As a result, it would log that
the configuration failed [even though it succeeded], and will
no longer do anything when requested to remove the configuration,
as it's accounting of the feature will be incorrect.
Fixes:
6ddc7608258d5 ("qed*: IOV support spoof-checking")
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Wed, 27 Jul 2016 11:45:19 +0000 (14:45 +0300)]
qede: Don't try removing unconfigured vlans
As part of ndo_vlan_rx_kill_vid() implementation,
qede is requesting firmware to remove the vlan filter.
This currently happens even if the vlan wasn't previously
added [In case device ran out of vlan credits].
For PFs this doesn't cause any issues as the firmware
would simply ignore the removal request. But for VFs their
parent PF is holding an accounting of the configured vlans,
and such a request would cause the PF to fail the VF's
removal request.
Simply fix this for both PFs & VFs and don't remove filters
that were not previously added.
Fixes:
7c1bfcad9f3c8 ("qede: Add vlan filtering offload support")
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 30 Jul 2016 00:54:17 +0000 (17:54 -0700)]
Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit
Pull audit updates from Paul Moore:
"Six audit patches for 4.8.
There are a couple of style and minor whitespace tweaks for the logs,
as well as a minor fixup to catch errors on user filter rules, however
the major improvements are a fix to the s390 syscall argument masking
code (reviewed by the nice s390 folks), some consolidation around the
exclude filtering (less code, always a win), and a double-fetch fix
for recording the execve arguments"
* 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit:
audit: fix a double fetch in audit_log_single_execve_arg()
audit: fix whitespace in CWD record
audit: add fields to exclude filter by reusing user filter
s390: ensure that syscall arguments are properly masked on s390
audit: fix some horrible switch statement style crimes
audit: fixup: log on errors from filter user rules
Linus Torvalds [Sat, 30 Jul 2016 00:38:46 +0000 (17:38 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
"Highlights:
- TPM core and driver updates/fixes
- IPv6 security labeling (CALIPSO)
- Lots of Apparmor fixes
- Seccomp: remove 2-phase API, close hole where ptrace can change
syscall #"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (156 commits)
apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling
tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family)
tpm: Factor out common startup code
tpm: use devm_add_action_or_reset
tpm2_i2c_nuvoton: add irq validity check
tpm: read burstcount from TPM_STS in one 32-bit transaction
tpm: fix byte-order for the value read by tpm2_get_tpm_pt
tpm_tis_core: convert max timeouts from msec to jiffies
apparmor: fix arg_size computation for when setprocattr is null terminated
apparmor: fix oops, validate buffer size in apparmor_setprocattr()
apparmor: do not expose kernel stack
apparmor: fix module parameters can be changed after policy is locked
apparmor: fix oops in profile_unpack() when policy_db is not present
apparmor: don't check for vmalloc_addr if kvzalloc() failed
apparmor: add missing id bounds check on dfa verification
apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task
apparmor: use list_next_entry instead of list_entry_next
apparmor: fix refcount race when finding a child profile
apparmor: fix ref count leak when profile sha1 hash is read
apparmor: check that xindex is in trans_table bounds
...
Linus Torvalds [Fri, 29 Jul 2016 22:54:19 +0000 (15:54 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ebiederm/user-namespace
Pull userns vfs updates from Eric Biederman:
"This tree contains some very long awaited work on generalizing the
user namespace support for mounting filesystems to include filesystems
with a backing store. The real world target is fuse but the goal is
to update the vfs to allow any filesystem to be supported. This
patchset is based on a lot of code review and testing to approach that
goal.
While looking at what is needed to support the fuse filesystem it
became clear that there were things like xattrs for security modules
that needed special treatment. That the resolution of those concerns
would not be fuse specific. That sorting out these general issues
made most sense at the generic level, where the right people could be
drawn into the conversation, and the issues could be solved for
everyone.
At a high level what this patchset does a couple of simple things:
- Add a user namespace owner (s_user_ns) to struct super_block.
- Teach the vfs to handle filesystem uids and gids not mapping into
to kuids and kgids and being reported as INVALID_UID and
INVALID_GID in vfs data structures.
By assigning a user namespace owner filesystems that are mounted with
only user namespace privilege can be detected. This allows security
modules and the like to know which mounts may not be trusted. This
also allows the set of uids and gids that are communicated to the
filesystem to be capped at the set of kuids and kgids that are in the
owning user namespace of the filesystem.
One of the crazier corner casees this handles is the case of inodes
whose i_uid or i_gid are not mapped into the vfs. Most of the code
simply doesn't care but it is easy to confuse the inode writeback path
so no operation that could cause an inode write-back is permitted for
such inodes (aka only reads are allowed).
This set of changes starts out by cleaning up the code paths involved
in user namespace permirted mounts. Then when things are clean enough
adds code that cleanly sets s_user_ns. Then additional restrictions
are added that are possible now that the filesystem superblock
contains owner information.
These changes should not affect anyone in practice, but there are some
parts of these restrictions that are changes in behavior.
- Andy's restriction on suid executables that does not honor the
suid bit when the path is from another mount namespace (think
/proc/[pid]/fd/) or when the filesystem was mounted by a less
privileged user.
- The replacement of the user namespace implicit setting of MNT_NODEV
with implicitly setting SB_I_NODEV on the filesystem superblock
instead.
Using SB_I_NODEV is a stronger form that happens to make this state
user invisible. The user visibility can be managed but it caused
problems when it was introduced from applications reasonably
expecting mount flags to be what they were set to.
There is a little bit of work remaining before it is safe to support
mounting filesystems with backing store in user namespaces, beyond
what is in this set of changes.
- Verifying the mounter has permission to read/write the block device
during mount.
- Teaching the integrity modules IMA and EVM to handle filesystems
mounted with only user namespace root and to reduce trust in their
security xattrs accordingly.
- Capturing the mounters credentials and using that for permission
checks in d_automount and the like. (Given that overlayfs already
does this, and we need the work in d_automount it make sense to
generalize this case).
Furthermore there are a few changes that are on the wishlist:
- Get all filesystems supporting posix acls using the generic posix
acls so that posix_acl_fix_xattr_from_user and
posix_acl_fix_xattr_to_user may be removed. [Maintainability]
- Reducing the permission checks in places such as remount to allow
the superblock owner to perform them.
- Allowing the superblock owner to chown files with unmapped uids and
gids to something that is mapped so the files may be treated
normally.
I am not considering even obvious relaxations of permission checks
until it is clear there are no more corner cases that need to be
locked down and handled generically.
Many thanks to Seth Forshee who kept this code alive, and putting up
with me rewriting substantial portions of what he did to handle more
corner cases, and for his diligent testing and reviewing of my
changes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (30 commits)
fs: Call d_automount with the filesystems creds
fs: Update i_[ug]id_(read|write) to translate relative to s_user_ns
evm: Translate user/group ids relative to s_user_ns when computing HMAC
dquot: For now explicitly don't support filesystems outside of init_user_ns
quota: Handle quota data stored in s_user_ns in quota_setxquota
quota: Ensure qids map to the filesystem
vfs: Don't create inodes with a uid or gid unknown to the vfs
vfs: Don't modify inodes with a uid or gid unknown to the vfs
cred: Reject inodes with invalid ids in set_create_file_as()
fs: Check for invalid i_uid in may_follow_link()
vfs: Verify acls are valid within superblock's s_user_ns.
userns: Handle -1 in k[ug]id_has_mapping when !CONFIG_USER_NS
fs: Refuse uid/gid changes which don't map into s_user_ns
selinux: Add support for unprivileged mounts from user namespaces
Smack: Handle labels consistently in untrusted mounts
Smack: Add support for unprivileged mounts from user namespaces
fs: Treat foreign mounts as nosuid
fs: Limit file caps to the user namespace of the super block
userns: Remove the now unnecessary FS_USERNS_DEV_MOUNT flag
userns: Remove implicit MNT_NODEV fragility.
...
Linus Torvalds [Fri, 29 Jul 2016 21:34:55 +0000 (14:34 -0700)]
Merge tag 'pm-urgent-4.8-rc1' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix a nasty (and really hard to debug) memory corruption during resume
from hibernation on x86-64 (that leads to a kernel panic most of the
time) due to the use of a stale stack pointer value in FRAME_BEGIN
(Josh Poimboeuf)"
* tag 'pm-urgent-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
x86/power/64: Fix hibernation return address corruption
Linus Torvalds [Fri, 29 Jul 2016 21:29:04 +0000 (14:29 -0700)]
Merge branch 'for-4.7-fixes' of git://git./linux/kernel/git/tj/cgroup
Pull more cgroup updates from Tejun Heo:
"I forgot to include the patches which got applied to for-4.7-fixes
late during last cycle.
Eric's three patches fix bugs introduced with the namespace support"
* 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroupns: Only allow creation of hierarchies in the initial cgroup namespace
cgroupns: Close race between cgroup_post_fork and copy_cgroup_ns
cgroupns: Fix the locking in copy_cgroup_ns
Linus Torvalds [Fri, 29 Jul 2016 20:55:30 +0000 (13:55 -0700)]
Merge branch 'smp-hotplug-for-linus' of git://git./linux/kernel/git/tip/tip
Pull smp hotplug updates from Thomas Gleixner:
"This is the next part of the hotplug rework.
- Convert all notifiers with a priority assigned
- Convert all CPU_STARTING/DYING notifiers
The final removal of the STARTING/DYING infrastructure will happen
when the merge window closes.
Another 700 hundred line of unpenetrable maze gone :)"
* 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (70 commits)
timers/core: Correct callback order during CPU hot plug
leds/trigger/cpu: Move from CPU_STARTING to ONLINE level
powerpc/numa: Convert to hotplug state machine
arm/perf: Fix hotplug state machine conversion
irqchip/armada: Avoid unused function warnings
ARC/time: Convert to hotplug state machine
clocksource/atlas7: Convert to hotplug state machine
clocksource/armada-370-xp: Convert to hotplug state machine
clocksource/exynos_mct: Convert to hotplug state machine
clocksource/arm_global_timer: Convert to hotplug state machine
rcu: Convert rcutree to hotplug state machine
KVM/arm/arm64/vgic-new: Convert to hotplug state machine
smp/cfd: Convert core to hotplug state machine
x86/x2apic: Convert to CPU hotplug state machine
profile: Convert to hotplug state machine
timers/core: Convert to hotplug state machine
hrtimer: Convert to hotplug state machine
x86/tboot: Convert to hotplug state machine
arm64/armv8 deprecated: Convert to hotplug state machine
hwtracing/coresight-etm4x: Convert to hotplug state machine
...
Linus Torvalds [Fri, 29 Jul 2016 20:29:06 +0000 (13:29 -0700)]
Merge git://git./linux/kernel/git/davem/ide
Pull IDE updates from David Miller:
"Just a couple small bug fixes, nothing overly exciting in here"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
ide: missing break statement in set_timings_mdma()
ide: hpt366: fix incorrect mask when checking at cmd_high_time
ide-tape: fix misprint in failure handling in idetape_init()
cmd640: add __init attribute
Linus Torvalds [Fri, 29 Jul 2016 20:23:18 +0000 (13:23 -0700)]
Merge git://git./linux/kernel/git/davem/sparc
Pull sparc updates from David Miller:
1) Double spin lock bug in sunhv serial driver, from Dan Carpenter.
2) Use correct RSS estimate when determining whether to grow the huge
TSB or not, from Mike Kravetz.
3) Don't use full three level page tables for hugepages, PMD level is
sufficient. From Nitin Gupta.
4) Mask out extraneous bits from TSB_TAG_ACCESS register, we only want
the address bits.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Trim page tables for 8M hugepages
sparc64 mm: Fix base TSB sizing when hugetlb pages are used
sparc: serial: sunhv: fix a double lock bug
sparc32: off by ones in BUG_ON()
sparc: Don't leak context bits into thread->fault_address
Linus Torvalds [Fri, 29 Jul 2016 20:17:34 +0000 (13:17 -0700)]
Merge tag 'arc-4.8-rc1' of git://git./linux/kernel/git/vgupta/arc
Pull ARC updates from Vineet Gupta:
"Things have been calm here - nothing much except for a few fixes"
* tag 'arc-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: mm: don't loose PTE_SPECIAL in pte_modify()
ARC: dma: fix address translation in arc_dma_free
ARC: typo fix in mm/ioremap.c
ARC: fix linux-next build breakage
Rafael J. Wysocki [Fri, 29 Jul 2016 20:12:54 +0000 (22:12 +0200)]
Merge branch 'pm-sleep'
* pm-sleep:
x86/power/64: Fix hibernation return address corruption
Linus Torvalds [Fri, 29 Jul 2016 20:09:55 +0000 (13:09 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/egtvedt/linux-avr32
Pull AVR32 updates from Hans-Christian Noren Egtvedt.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32:
avr32: off by one in at32_init_pio()
avr32: fixup code style in unistd.h and syscall_table.S
avr32: wire up preadv2 and pwritev2 syscalls
Linus Torvalds [Fri, 29 Jul 2016 20:03:49 +0000 (13:03 -0700)]
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
"Included in this update are:
- Patches from Gregory Clement to fix the coherent DMA cases in our
dma-mapping code.
- A number of CPU errata updates and fixes.
- ARM cpuidle improvements from Jisheng Zhang.
- Fix from Kees for the location of _etext.
- Cleanups from Masahiro Yamada to avoid duplicated messages during
the kernel build, and remove CONFIG_ARCH_HAS_BARRIERS.
- Remove a udelay loop limitation, allowing for faster CPUs to
calibrate the delay correctly.
- Cleanup some left-overs from the SW PAN implementation.
- Ensure that a modified address limit is not visible to exception
handlers"
* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (21 commits)
ARM: 8586/1: cpuidle: make arm_cpuidle_suspend() a bit more efficient
ARM: 8585/1: cpuidle: fix !cpuidle_ops[cpu].init case during init
ARM: 8561/4: dma-mapping: Fix the coherent case when iommu is used
ARM: 8561/3: dma-mapping: Don't use outer_flush_range when the L2C is coherent
ARM: 8560/1: errata: Workaround errata A12 825619 / A17 852421
ARM: 8559/1: errata: Workaround erratum A12 821420
ARM: 8558/1: errata: Workaround errata A12 818325/852422 A17 852423
ARM: save and reset the address limit when entering an exception
ARM: 8577/1: Fix Cortex-A15 798181 errata initialization
ARM: 8584/1: floppy: avoid gcc-6 warning
ARM: 8583/1: mm: fix location of _etext
ARM: 8582/1: remove unused CONFIG_ARCH_HAS_BARRIERS
ARM: 8306/1: loop_udelay: remove bogomips value limitation
ARM: 8581/1: add missing <asm/prom.h> to arch/arm/kernel/devtree.c
ARM: 8576/1: avoid duplicating "Kernel: arch/arm/boot/*Image is ready"
ARM: 8556/1: on a generic DT system: do not touch l2x0
ARM: uaccess: remove put_user() code duplication
ARM: 8580/1: Remove orphaned __addr_ok() definition
ARM: get rid of horrible *(unsigned int *)(regs + 1)
ARM: introduce svc_pt_regs structure
...
Linus Torvalds [Fri, 29 Jul 2016 19:29:15 +0000 (12:29 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi:
"This fixes error propagation from writeback to fsync/close for
writeback cache mode as well as adding a missing capability flag to
the INIT message. The rest are cleanups.
(The commits are recent but all the code actually sat in -next for a
while now. The recommits are due to conflict avoidance and the
addition of Cc: stable@...)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: use filemap_check_errors()
mm: export filemap_check_errors() to modules
fuse: fix wrong assignment of ->flags in fuse_send_init()
fuse: fuse_flush must check mapping->flags for errors
fuse: fsync() did not return IO errors
fuse: don't mess with blocking signals
new helper: wait_event_killable_exclusive()
fuse: improve aio directIO write performance for size extending writes
Linus Torvalds [Fri, 29 Jul 2016 19:17:52 +0000 (12:17 -0700)]
Revert "vfs: add lookup_hash() helper"
This reverts commit
3c9fe8cdff1b889a059a30d22f130372f2b3885f.
As Miklos points out in commit
c1b2cc1a765a, the "lookup_hash()" helper
is now unused, and in fact, with the hash salting changes, since the
hash of a dentry name now depends on the directory dentry it is in, the
helper function isn't even really likely to be useful.
So rather than keep it around in case somebody else might end up finding
a use for it, let's just remove the helper and not trick people into
thinking it might be a useful thing.
For example, I had obviously completely missed how the helper didn't
follow the normal dentry hashing patterns, and how the hash salting
patch broke overlayfs. Things would quietly build and look sane, but
not work.
Suggested-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 29 Jul 2016 19:13:07 +0000 (12:13 -0700)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs update from Miklos Szeredi:
"First of all, this fixes a regression in overlayfs introduced by the
dentry hash salting. I've moved the patch fixing this to the front of
the queue, so if (god forbid) something needs to be bisected in
overlayfs this regression won't interfere with that.
The biggest part is preparation for selinux support, done by Vivek
Goyal. Essentially this makes all operations on underlying
filesystems be done with credentials of mounter. This makes
everything nicely consistent.
There are also fixes for a number of known and recently discovered
non-standard behavior (thanks to Eryu Guan for testing and improving
the test suites)"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (23 commits)
ovl: simplify empty checking
qstr: constify instances in overlayfs
ovl: clear nlink on rmdir
ovl: disallow overlayfs as upperdir
ovl: fix warning
ovl: remove duplicated include from super.c
ovl: append MAY_READ when diluting write checks
ovl: dilute permission checks on lower only if not special file
ovl: fix POSIX ACL setting
ovl: share inode for hard link
ovl: store real inode pointer in ->i_private
ovl: permission: return ECHILD instead of ENOENT
ovl: update atime on upper
ovl: fix sgid on directory
ovl: simplify permission checking
ovl: do not require mounter to have MAY_WRITE on lower
ovl: do operations on underlying file system in mounter's context
ovl: modify ovl_permission() to do checks on two inodes
ovl: define ->get_acl() for overlay inodes
ovl: move some common code in a function
...
Linus Torvalds [Fri, 29 Jul 2016 18:56:29 +0000 (11:56 -0700)]
Merge tag 'freevxfs-for-4.8' of git://git.infradead.org/users/hch/freevxfs
Pull freevxfs updates from Christoph Hellwig:
"Support for foreign endianess and HP-UP superblocks from
Krzysztof BÅ‚aszkowski"
* tag 'freevxfs-for-4.8' of git://git.infradead.org/users/hch/freevxfs:
freevxfs: update Kconfig information
freevxfs: refactor readdir and lookup code
freevxfs: fix lack of inode initialization
freevxfs: fix memory leak in vxfs_read_fshead()
freevxfs: update documentation and cresdits for HP-UX support
freevxfs: implement ->alloc_inode and ->destroy_inode
freevxfs: avoid the need for forward declaring the super operations
freevxfs: move VFS inode allocation into vxfs_blkiget and vxfs_stiget
freevxfs: remove vxfs_put_fake_inode
freevxfs: handle big endian HP-UX file systems
Linus Torvalds [Fri, 29 Jul 2016 18:45:41 +0000 (11:45 -0700)]
Merge tag 'configfs-for-4.8' of git://git.infradead.org/users/hch/configfs
Pull configfs update from Christoph Hellwig:
"A simple error handling fix from Tal Shorer"
* tag 'configfs-for-4.8' of git://git.infradead.org/users/hch/configfs:
configfs: don't set buffer_needs_fill to zero if show() returns error
Linus Torvalds [Fri, 29 Jul 2016 18:29:13 +0000 (11:29 -0700)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull CIFS/SMB3 fixes from Steve French:
"Various CIFS/SMB3 fixes, most for stable"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
CIFS: Fix a possible invalid memory access in smb2_query_symlink()
fs/cifs: make share unaccessible at root level mountable
cifs: fix crash due to race in hmac(md5) handling
cifs: unbreak TCP session reuse
cifs: Check for existing directory when opening file with O_CREAT
Add MF-Symlinks support for SMB 2.0
Nitin Gupta [Fri, 29 Jul 2016 07:54:21 +0000 (00:54 -0700)]
sparc64: Trim page tables for 8M hugepages
For PMD aligned (8M) hugepages, we currently allocate
all four page table levels which is wasteful. We now
allocate till PMD level only which saves memory usage
from page tables.
Also, when freeing page table for 8M hugepage backed region,
make sure we don't try to access non-existent PTE level.
Orabug:
22630259
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Miklos Szeredi [Fri, 29 Jul 2016 12:10:57 +0000 (14:10 +0200)]
fuse: use filemap_check_errors()
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 12:10:57 +0000 (14:10 +0200)]
mm: export filemap_check_errors() to modules
Can be used by fuse, btrfs and f2fs to replace opencoded variants.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Wei Fang [Mon, 25 Jul 2016 13:17:04 +0000 (21:17 +0800)]
fuse: fix wrong assignment of ->flags in fuse_send_init()
FUSE_HAS_IOCTL_DIR should be assigned to ->flags, it may be a typo.
Signed-off-by: Wei Fang <fangwei1@huawei.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes:
69fe05c90ed5 ("fuse: add missing INIT flags")
Cc: <stable@vger.kernel.org>
Maxim Patlasov [Wed, 20 Jul 2016 01:12:26 +0000 (18:12 -0700)]
fuse: fuse_flush must check mapping->flags for errors
fuse_flush() calls write_inode_now() that triggers writeback, but actual
writeback will happen later, on fuse_sync_writes(). If an error happens,
fuse_writepage_end() will set error bit in mapping->flags. So, we have to
check mapping->flags after fuse_sync_writes().
Signed-off-by: Maxim Patlasov <mpatlasov@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes:
4d99ff8f12eb ("fuse: Turn writeback cache on")
Cc: <stable@vger.kernel.org> # v3.15+
Alexey Kuznetsov [Tue, 19 Jul 2016 19:48:01 +0000 (12:48 -0700)]
fuse: fsync() did not return IO errors
Due to implementation of fuse writeback filemap_write_and_wait_range() does
not catch errors. We have to do this directly after fuse_sync_writes()
Signed-off-by: Alexey Kuznetsov <kuznet@virtuozzo.com>
Signed-off-by: Maxim Patlasov <mpatlasov@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes:
4d99ff8f12eb ("fuse: Turn writeback cache on")
Cc: <stable@vger.kernel.org> # v3.15+
Josh Poimboeuf [Thu, 28 Jul 2016 21:15:21 +0000 (23:15 +0200)]
x86/power/64: Fix hibernation return address corruption
In kernel bug 150021, a kernel panic was reported when restoring a
hibernate image. Only a picture of the oops was reported, so I can't
paste the whole thing here. But here are the most interesting parts:
kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
BUG: unable to handle kernel paging request at
ffff8804615cfd78
...
RIP:
ffff8804615cfd78
RSP:
ffff8804615f0000
RBP:
ffff8804615cfdc0
...
Call Trace:
do_signal+0x23
exit_to_usermode_loop+0x64
...
The RIP is on the same page as RBP, so it apparently started executing
on the stack.
The bug was bisected to commit
ef0f3ed5a4ac (x86/asm/power: Create
stack frames in hibernate_asm_64.S), which in retrospect seems quite
dangerous, since that code saves and restores the stack pointer from a
global variable ('saved_context').
There are a lot of moving parts in the hibernate save and restore paths,
so I don't know exactly what caused the panic. Presumably, a FRAME_END
was executed without the corresponding FRAME_BEGIN, or vice versa. That
would corrupt the return address on the stack and would be consistent
with the details of the above panic.
[ rjw: One major problem is that by the time the FRAME_BEGIN in
restore_registers() is executed, the stack pointer value may not
be valid any more. Namely, the stack area pointed to by it
previously may have been overwritten by some image memory contents
and that page frame may now be used for whatever different purpose
it had been allocated for before hibernation. In that case, the
FRAME_BEGIN will corrupt that memory. ]
Instead of doing the frame pointer save/restore around the bounds of the
affected functions, just do it around the call to swsusp_save().
That has the same effect of ensuring that if swsusp_save() sleeps, the
frame pointers will be correct. It's also a much more obviously safe
way to do it than the original patch. And objtool still doesn't report
any warnings.
Fixes:
ef0f3ed5a4ac (x86/asm/power: Create stack frames in hibernate_asm_64.S)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=150021
Cc: 4.6+ <stable@vger.kernel.org> # 4.6+
Reported-by: Andre Reinke <andre.reinke@mailbox.org>
Tested-by: Andre Reinke <andre.reinke@mailbox.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:25 +0000 (12:05 +0200)]
ovl: simplify empty checking
The empty checking logic is duplicated in ovl_check_empty_and_clear() and
ovl_remove_and_whiteout(), except the condition for clearing whiteouts is
different:
ovl_check_empty_and_clear() checked for being upper
ovl_remove_and_whiteout() checked for merge OR lower
Move the intersection of those checks (upper AND merge) into
ovl_check_empty_and_clear() and simplify ovl_remove_and_whiteout().
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Al Viro [Thu, 21 Jul 2016 02:36:53 +0000 (22:36 -0400)]
qstr: constify instances in overlayfs
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:24 +0000 (12:05 +0200)]
ovl: clear nlink on rmdir
To make delete notification work on fa/inotify.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:24 +0000 (12:05 +0200)]
ovl: disallow overlayfs as upperdir
This does not work and does not make sense. So instead of fixing it
(probably not hard) just disallow.
Reported-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:24 +0000 (12:05 +0200)]
ovl: fix warning
There's a superfluous newline in the warning message in ovl_d_real().
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Wei Yongjun [Wed, 6 Jul 2016 12:27:15 +0000 (12:27 +0000)]
ovl: remove duplicated include from super.c
Remove duplicated include.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Vivek Goyal [Wed, 13 Jul 2016 15:00:14 +0000 (11:00 -0400)]
ovl: append MAY_READ when diluting write checks
Right now we remove MAY_WRITE/MAY_APPEND bits from mask if realfile is on
lower/. This is done as files on lower will never be written and will be
copied up. But to copy up a file, mounter should have MAY_READ permission
otherwise copy up will fail. So set MAY_READ in mask when MAY_WRITE is
reset.
Dan Walsh noticed this when he did access(lowerfile, W_OK) and it returned
True (context mounts) but when he tried to actually write to file, it
failed as mounter did not have permission on lower file.
[SzM] don't set MAY_READ if only MAY_APPEND is set without MAY_WRITE; this
won't trigger a copy-up.
Reported-by: Dan Walsh <dwalsh@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Vivek Goyal [Wed, 13 Jul 2016 15:00:14 +0000 (11:00 -0400)]
ovl: dilute permission checks on lower only if not special file
Right now if file is on lower/, we remove MAY_WRITE/MAY_APPEND bits from
mask as lower/ will never be written and file will be copied up. But this
is not true for special files. These files are not copied up and are opened
in place. So don't dilute the checks for these types of files.
Reported-by: Dan Walsh <dwalsh@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:24 +0000 (12:05 +0200)]
ovl: fix POSIX ACL setting
Setting POSIX ACL needs special handling:
1) Some permission checks are done by ->setxattr() which now uses mounter's
creds ("ovl: do operations on underlying file system in mounter's
context"). These permission checks need to be done with current cred as
well.
2) Setting ACL can fail for various reasons. We do not need to copy up in
these cases.
In the mean time switch to using generic_setxattr.
[Arnd Bergmann] Fix link error without POSIX ACL. posix_acl_from_xattr()
doesn't have a 'static inline' implementation when CONFIG_FS_POSIX_ACL is
disabled, and I could not come up with an obvious way to do it.
This instead avoids the link error by defining two sets of ACL operations
and letting the compiler drop one of the two at compile time depending
on CONFIG_FS_POSIX_ACL. This avoids all references to the ACL code,
also leading to smaller code.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:24 +0000 (12:05 +0200)]
ovl: share inode for hard link
Inode attributes are copied up to overlay inode (uid, gid, mode, atime,
mtime, ctime) so generic code using these fields works correcty. If a hard
link is created in overlayfs separate inodes are allocated for each link.
If chmod/chown/etc. is performed on one of the links then the inode
belonging to the other ones won't be updated.
This patch attempts to fix this by sharing inodes for hard links.
Use inode hash (with real inode pointer as a key) to make sure overlay
inodes are shared for hard links on upper. Hard links on lower are still
split (which is not user observable until the copy-up happens, see
Documentation/filesystems/overlayfs.txt under "Non-standard behavior").
The inode is only inserted in the hash if it is non-directoy and upper.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:24 +0000 (12:05 +0200)]
ovl: store real inode pointer in ->i_private
To get from overlay inode to real inode we currently use 'struct
ovl_entry', which has lifetime connected to overlay dentry. This is okay,
since each overlay dentry had a new overlay inode allocated.
Following patch will break that assumption, so need to leave out ovl_entry.
This patch stores the real inode directly in i_private, with the lowest bit
used to indicate whether the inode is upper or lower.
Lifetime rules remain, using ovl_inode_real() must only be done while
caller holds ref on overlay dentry (and hence on real dentry), or within
RCU protected regions.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:23 +0000 (12:05 +0200)]
ovl: permission: return ECHILD instead of ENOENT
The error is due to RCU and is temporary.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:23 +0000 (12:05 +0200)]
ovl: update atime on upper
Fix atime update logic in overlayfs.
This patch adds an i_op->update_time() handler to overlayfs inodes. This
forwards atime updates to the upper layer only. No atime updates are done
on lower layers.
Remove implicit atime updates to underlying files and directories with
O_NOATIME. Remove explicit atime update in ovl_readlink().
Clear atime related mnt flags from cloned upper mount. This means atime
updates are controlled purely by overlayfs mount options.
Reported-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:23 +0000 (12:05 +0200)]
ovl: fix sgid on directory
When creating directory in workdir, the group/sgid inheritance from the
parent dir was omitted completely. Fix this by calling inode_init_owner()
on overlay inode and using the resulting uid/gid/mode to create the file.
Unfortunately the sgid bit can be stripped off due to umask, so need to
reset the mode in this case in workdir before moving the directory in
place.
Reported-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:23 +0000 (12:05 +0200)]
ovl: simplify permission checking
The fact that we always do permission checking on the overlay inode and
clear MAY_WRITE for checking access to the lower inode allows cruft to be
removed from ovl_permission().
1) "default_permissions" option effectively did generic_permission() on the
overlay inode with i_mode, i_uid and i_gid updated from underlying
filesystem. This is what we do by default now. It did the update using
vfs_getattr() but that's only needed if the underlying filesystem can
change (which is not allowed). We may later introduce a "paranoia_mode"
that verifies that mode/uid/gid are not changed.
2) splitting out the IS_RDONLY() check from inode_permission() also becomes
unnecessary once we remove the MAY_WRITE from the lower inode check.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Vivek Goyal [Fri, 1 Jul 2016 20:34:29 +0000 (16:34 -0400)]
ovl: do not require mounter to have MAY_WRITE on lower
Now we have two levels of checks in ovl_permission(). overlay inode
is checked with the creds of task while underlying inode is checked
with the creds of mounter.
Looks like mounter does not have to have WRITE access to files on lower/.
So remove the MAY_WRITE from access mask for checks on underlying
lower inode.
This means task should still have the MAY_WRITE permission on lower
inode and mounter is not required to have MAY_WRITE.
It also solves the problem of read only NFS mounts being used as lower.
If __inode_permission(lower_inode, MAY_WRITE) is called on read only
NFS, it fails. By resetting MAY_WRITE, check succeeds and case of
read only NFS shold work with overlay without having to specify any
special mount options (default permission).
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Vivek Goyal [Fri, 1 Jul 2016 20:34:28 +0000 (16:34 -0400)]
ovl: do operations on underlying file system in mounter's context
Given we are now doing checks both on overlay inode as well underlying
inode, we should be able to do checks and operations on underlying file
system using mounter's context.
So modify all operations to do checks/operations on underlying dentry/inode
in the context of mounter.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Vivek Goyal [Fri, 1 Jul 2016 20:34:27 +0000 (16:34 -0400)]
ovl: modify ovl_permission() to do checks on two inodes
Right now ovl_permission() calls __inode_permission(realinode), to do
permission checks on real inode and no checks are done on overlay inode.
Modify it to do checks both on overlay inode as well as underlying inode.
Checks on overlay inode will be done with the creds of calling task while
checks on underlying inode will be done with the creds of mounter.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Vivek Goyal [Fri, 1 Jul 2016 20:34:26 +0000 (16:34 -0400)]
ovl: define ->get_acl() for overlay inodes
Now we are planning to do DAC permission checks on overlay inode
itself. And to make it work, we will need to make sure we can get acls from
underlying inode. So define ->get_acl() for overlay inodes and this in turn
calls into underlying filesystem to get acls, if any.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Vivek Goyal [Thu, 16 Jun 2016 14:09:14 +0000 (10:09 -0400)]
ovl: move some common code in a function
ovl_create_upper() and ovl_create_over_whiteout() seem to be sharing some
common code which can be moved into a separate function. No functionality
change.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Andreas Gruenbacher [Thu, 26 May 2016 00:01:47 +0000 (02:01 +0200)]
ovl: store ovl_entry in inode->i_private for all inodes
Previously this was only done for directory inodes. Doing so for all
inodes makes for a nice cleanup in ovl_permission at zero cost.
Inodes are not shared for hard links on the overlay, so this works fine.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:22 +0000 (12:05 +0200)]
ovl: use generic_delete_inode
No point in keeping overlay inodes around since they will never be reused.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Miklos Szeredi [Fri, 29 Jul 2016 10:05:22 +0000 (12:05 +0200)]
ovl: check mounter creds on underlying lookup
The hash salting changes meant that we can no longer reuse the hash in the
overlay dentry to look up the underlying dentry.
Instead of lookup_hash(), use lookup_one_len_unlocked() and swith to
mounter's creds (like we do for all other operations later in the series).
Now the lookup_hash() export introduced in 4.6 by
3c9fe8cdff1b ("vfs: add
lookup_hash() helper") is unused and can possibly be removed; its
usefulness negated by the hash salting and the idea that mounter's creds
should be used on operations on underlying filesystems.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes:
8387ff2577eb ("vfs: make the string hashes salt the hash")
Dan Carpenter [Wed, 13 Jul 2016 10:08:55 +0000 (13:08 +0300)]
avr32: off by one in at32_init_pio()
The pio_dev[] array has MAX_NR_PIO_DEVICES elements so the > should be
>=.
Fixes:
5f97f7f9400d ('[PATCH] avr32 architecture')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Hans-Christian Noren Egtvedt [Sun, 29 May 2016 19:40:23 +0000 (21:40 +0200)]
avr32: fixup code style in unistd.h and syscall_table.S
This patch swaps the mix of tabs and space for alignment of comment
after code to use spaces only.
Also document why recvmmsg was defined twice in the syscall_table.S
table, but only once in unistd.h. In short, wired in the table by
generic arch patch, but forgotten in unistd.h (review slip).
Hans-Christian Noren Egtvedt [Sun, 29 May 2016 19:11:53 +0000 (21:11 +0200)]
avr32: wire up preadv2 and pwritev2 syscalls
This patch wires up the new preadv2 and pwritev2 syscall on AVR32.
On AVR32, all parameters beyond the 5th are passed on the stack. System
calls don't use the stack -- they borrow a callee-saved register
instead. This means that syscalls that take 6 parameters must be called
through a stub that pushes the last parameter on the stack.
Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Mike Kravetz [Fri, 15 Jul 2016 20:08:42 +0000 (13:08 -0700)]
sparc64 mm: Fix base TSB sizing when hugetlb pages are used
do_sparc64_fault() calculates both the base and huge page RSS sizes and
uses this information in calls to tsb_grow(). The calculation for base
page TSB size is not correct if the task uses hugetlb pages. hugetlb
pages are not accounted for in RSS, therefore the call to get_mm_rss(mm)
does not include hugetlb pages. However, the number of pages based on
huge_pte_count (which does include hugetlb pages) is subtracted from
this value. This will result in an artificially small and often negative
RSS calculation. The base TSB size is then often set to max_tsb_size
as the passed RSS is unsigned, so a negative value looks really big.
THP pages are also accounted for in huge_pte_count, and THP pages are
accounted for in RSS so the calculation in do_sparc64_fault() is correct
if a task only uses THP pages.
A single huge_pte_count is not sufficient for TSB sizing if both hugetlb
and THP pages can be used. Instead of a single counter, use two: one
for hugetlb and one for THP.
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 29 Jul 2016 01:20:09 +0000 (18:20 -0700)]
Merge tag 'trace-v4.8' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"This is mostly clean ups and small fixes. Some of the more visible
changes are:
- The function pid code uses the event pid filtering logic
- [ku]probe events have access to current->comm
- trace_printk now has sample code
- PCI devices now trace physical addresses
- stack tracing has less unnessary functions traced"
* tag 'trace-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
printk, tracing: Avoiding unneeded blank lines
tracing: Use __get_str() when manipulating strings
tracing, RAS: Cleanup on __get_str() usage
tracing: Use outer () on __get_str() definition
ftrace: Reduce size of function graph entries
tracing: Have HIST_TRIGGERS select TRACING
tracing: Using for_each_set_bit() to simplify trace_pid_write()
ftrace: Move toplevel init out of ftrace_init_tracefs()
tracing/function_graph: Fix filters for function_graph threshold
tracing: Skip more functions when doing stack tracing of events
tracing: Expose CPU physical addresses (resource values) for PCI devices
tracing: Show the preempt count of when the event was called
tracing: Add trace_printk sample code
tracing: Choose static tp_printk buffer by explicit nesting count
tracing: expose current->comm to [ku]probe events
ftrace: Have set_ftrace_pid use the bitmap like events do
tracing: Move pid_list write processing into its own function
tracing: Move the pid_list seq_file functions to be global
tracing: Move filtered_pid helper functions into trace.c
tracing: Make the pid filtering helper functions global
Linus Torvalds [Fri, 29 Jul 2016 01:13:35 +0000 (18:13 -0700)]
Merge tag 'vfio-v4.8-rc1' of git://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Enable no-iommu mode for platform devices (Peng Fan)
- Sub-page mmap for exclusive pages (Yongji Xie)
- Use-after-free fix (Ilya Lesokhin)
- Support for ACPI-based platform devices (Sinan Kaya)
* tag 'vfio-v4.8-rc1' of git://github.com/awilliam/linux-vfio:
vfio: platform: check reset call return code during release
vfio: platform: check reset call return code during open
vfio, platform: make reset driver a requirement by default
vfio: platform: call _RST method when using ACPI
vfio: platform: add extra debug info argument to call reset
vfio: platform: add support for ACPI probe
vfio: platform: determine reset capability
vfio: platform: move reset call to a common function
vfio: platform: rename reset function
vfio: fix possible use after free of vfio group
vfio-pci: Allow to mmap sub-page MMIO BARs if the mmio page is exclusive
vfio: platform: support No-IOMMU mode
Linus Torvalds [Fri, 29 Jul 2016 01:04:39 +0000 (18:04 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/shli/md
Pull MD updates from Shaohua Li:
- A bunch of patches from Neil Brown to fix RCU usage
- Two performance improvement patches from Tomasz Majchrzak
- Alexey Obitotskiy fixes module refcount issue
- Arnd Bergmann fixes time granularity
- Cong Wang fixes a list corruption issue
- Guoqing Jiang fixes a deadlock in md-cluster
- A null pointer deference fix from me
- Song Liu fixes misuse of raid6 rmw
- Other trival/cleanup fixes from Guoqing Jiang and Xiao Ni
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md: (28 commits)
MD: fix null pointer deference
raid10: improve random reads performance
md: add missing sysfs_notify on array_state update
Fix kernel module refcount handling
md: use seconds granularity for error logging
md: reduce the number of synchronize_rcu() calls when multiple devices fail.
md: be extra careful not to take a reference to a Faulty device.
md/multipath: add rcu protection to rdev access in multipath_status.
md/raid5: add rcu protection to rdev accesses in raid5_status.
md/raid5: add rcu protection to rdev accesses in want_replace
md/raid5: add rcu protection to rdev accesses in handle_failed_sync.
md/raid1: add rcu protection to rdev in fix_read_error
md/raid1: small code cleanup in end_sync_write
md/raid1: small cleanup in raid1_end_read/write_request
md/raid10: simplify print_conf a little.
md/raid10: minor code improvement in fix_read_error()
md/raid10: add rcu protection to rdev access during reshape.
md/raid10: add rcu protection to rdev access in raid10_sync_request.
md/raid10: add rcu protection in raid10_status.
md/raid10: fix refounct imbalance when resyncing an array with a replacement device.
...
Linus Torvalds [Fri, 29 Jul 2016 00:22:07 +0000 (17:22 -0700)]
Merge tag 'libnvdimm-for-4.8' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
- Replace pcommit with ADR / directed-flushing.
The pcommit instruction, which has not shipped on any product, is
deprecated. Instead, the requirement is that platforms implement
either ADR, or provide one or more flush addresses per nvdimm.
ADR (Asynchronous DRAM Refresh) flushes data in posted write buffers
to the memory controller on a power-fail event.
Flush addresses are defined in ACPI 6.x as an NVDIMM Firmware
Interface Table (NFIT) sub-structure: "Flush Hint Address Structure".
A flush hint is an mmio address that when written and fenced assures
that all previous posted writes targeting a given dimm have been
flushed to media.
- On-demand ARS (address range scrub).
Linux uses the results of the ACPI ARS commands to track bad blocks
in pmem devices. When latent errors are detected we re-scrub the
media to refresh the bad block list, userspace can also request a
re-scrub at any time.
- Support for the Microsoft DSM (device specific method) command
format.
- Support for EDK2/OVMF virtual disk device memory ranges.
- Various fixes and cleanups across the subsystem.
* tag 'libnvdimm-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (41 commits)
libnvdimm-btt: Delete an unnecessary check before the function call "__nd_device_register"
nfit: do an ARS scrub on hitting a latent media error
nfit: move to nfit/ sub-directory
nfit, libnvdimm: allow an ARS scrub to be triggered on demand
libnvdimm: register nvdimm_bus devices with an nd_bus driver
pmem: clarify a debug print in pmem_clear_poison
x86/insn: remove pcommit
Revert "KVM: x86: add pcommit support"
nfit, tools/testing/nvdimm/: unify shutdown paths
libnvdimm: move ->module to struct nvdimm_bus_descriptor
nfit: cleanup acpi_nfit_init calling convention
nfit: fix _FIT evaluation memory leak + use after free
tools/testing/nvdimm: add manufacturing_{date|location} dimm properties
tools/testing/nvdimm: add virtual ramdisk range
acpi, nfit: treat virtual ramdisk SPA as pmem region
pmem: kill __pmem address space
pmem: kill wmb_pmem()
libnvdimm, pmem: use nvdimm_flush() for namespace I/O writes
fs/dax: remove wmb_pmem()
libnvdimm, pmem: flush posted-write queues on shutdown
...
Linus Torvalds [Fri, 29 Jul 2016 00:06:51 +0000 (17:06 -0700)]
Merge tag 'pinctrl-v4.8-1' of git://git./linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"This is the bulk of pin control changes for the v4.8 kernel cycle.
Nothing stands out as especially exiting: new drivers, new subdrivers,
lots of cleanups and incremental features.
Business as usual.
New drivers:
- New driver for Oxnas pin control and GPIO. This ARM-based chipset
is used in a few storage (NAS) type devices.
- New driver for the MAX77620/MAX20024 pin controller portions.
- New driver for the Intel Merrifield pin controller.
New subdrivers:
- New subdriver for the Qualcomm MDM9615
- New subdriver for the STM32F746 MCU
- New subdriver for the Broadcom NSP SoC.
Cleanups:
- Demodularization of bool compiled-in drivers.
Apart from this there is just regular incremental improvements to a
lot of drivers, especially Uniphier and PFC"
* tag 'pinctrl-v4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (131 commits)
pinctrl: fix pincontrol definition for marvell
pinctrl: xway: fix typo
Revert "pinctrl: amd: make it explicitly non-modular"
pinctrl: iproc: Add NSP and Stingray GPIO support
pinctrl: Update iProc GPIO DT bindings
pinctrl: bcm: add OF dependencies
pinctrl: ns2: remove redundant dev_err call in ns2_pinmux_probe()
pinctrl: Add STM32F746 MCU support
pinctrl: intel: Protect set wake flow by spin lock
pinctrl: nsp: remove redundant dev_err call in nsp_pinmux_probe()
pinctrl: uniphier: add Ethernet pin-mux settings
sh-pfc: Use PTR_ERR_OR_ZERO() to simplify the code
pinctrl: ns2: fix return value check in ns2_pinmux_probe()
pinctrl: qcom: update DT bindings with ebi2 groups
pinctrl: qcom: establish proper EBI2 pin groups
pinctrl: imx21: Remove the MODULE_DEVICE_TABLE() macro
Documentation: dt: Add new compatible to STM32 pinctrl driver bindings
includes: dt-bindings: Add STM32F746 pinctrl DT bindings
pinctrl: sunxi: fix nand0 function name for sun8i
pinctrl: uniphier: remove pointless pin-mux settings for PH1-LD11
...
Linus Torvalds [Thu, 28 Jul 2016 23:36:48 +0000 (16:36 -0700)]
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
"The rest of MM"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (101 commits)
mm, compaction: simplify contended compaction handling
mm, compaction: introduce direct compaction priority
mm, thp: remove __GFP_NORETRY from khugepaged and madvised allocations
mm, page_alloc: make THP-specific decisions more generic
mm, page_alloc: restructure direct compaction handling in slowpath
mm, page_alloc: don't retry initial attempt in slowpath
mm, page_alloc: set alloc_flags only once in slowpath
lib/stackdepot.c: use __GFP_NOWARN for stack allocations
mm, kasan: switch SLUB to stackdepot, enable memory quarantine for SLUB
mm, kasan: account for object redzone in SLUB's nearest_obj()
mm: fix use-after-free if memory allocation failed in vma_adjust()
zsmalloc: Delete an unnecessary check before the function call "iput"
mm/memblock.c: fix index adjustment error in __next_mem_range_rev()
mem-hotplug: alloc new page from a nearest neighbor node when mem-offline
mm: optimize copy_page_to/from_iter_iovec
mm: add cond_resched() to generic_swapfile_activate()
Revert "mm, mempool: only set __GFP_NOMEMALLOC if there are free elements"
mm, compaction: don't isolate PageWriteback pages in MIGRATE_SYNC_LIGHT mode
mm: hwpoison: remove incorrect comments
make __section_nr() more efficient
...
Vlastimil Babka [Thu, 28 Jul 2016 22:49:30 +0000 (15:49 -0700)]
mm, compaction: simplify contended compaction handling
Async compaction detects contention either due to failing trylock on
zone->lock or lru_lock, or by need_resched(). Since
1f9efdef4f3f ("mm,
compaction: khugepaged should not give up due to need_resched()") the
code got quite complicated to distinguish these two up to the
__alloc_pages_slowpath() level, so different decisions could be taken
for khugepaged allocations.
After the recent changes, khugepaged allocations don't check for
contended compaction anymore, so we again don't need to distinguish lock
and sched contention, and simplify the current convoluted code a lot.
However, I believe it's also possible to simplify even more and
completely remove the check for contended compaction after the initial
async compaction for costly orders, which was originally aimed at THP
page fault allocations. There are several reasons why this can be done
now:
- with the new defaults, THP page faults no longer do reclaim/compaction at
all, unless the system admin has overridden the default, or application has
indicated via madvise that it can benefit from THP's. In both cases, it
means that the potential extra latency is expected and worth the benefits.
- even if reclaim/compaction proceeds after this patch where it previously
wouldn't, the second compaction attempt is still async and will detect the
contention and back off, if the contention persists
- there are still heuristics like deferred compaction and pageblock skip bits
in place that prevent excessive THP page fault latencies
Link: http://lkml.kernel.org/r/20160721073614.24395-9-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlastimil Babka [Thu, 28 Jul 2016 22:49:28 +0000 (15:49 -0700)]
mm, compaction: introduce direct compaction priority
In the context of direct compaction, for some types of allocations we
would like the compaction to either succeed or definitely fail while
trying as hard as possible. Current async/sync_light migration mode is
insufficient, as there are heuristics such as caching scanner positions,
marking pageblocks as unsuitable or deferring compaction for a zone. At
least the final compaction attempt should be able to override these
heuristics.
To communicate how hard compaction should try, we replace migration mode
with a new enum compact_priority and change the relevant function
signatures. In compact_zone_order() where struct compact_control is
constructed, the priority is mapped to suitable control flags. This
patch itself has no functional change, as the current priority levels
are mapped back to the same migration modes as before. Expanding them
will be done next.
Note that !CONFIG_COMPACTION variant of try_to_compact_pages() is
removed, as the only caller exists under CONFIG_COMPACTION.
Link: http://lkml.kernel.org/r/20160721073614.24395-8-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>