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903632 commits

Author SHA1 Message Date
Greg Kroah-Hartman
461d8deb26 USB: misc: iowarrior: add support for 2 OEMed devices
Add support for two OEM devices that are identical to existing
IO-Warrior devices, except for the USB device id.

Cc: Christoph Jung <jung@codemercs.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200212040422.2991-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-12 09:54:23 -08:00
Richard Dodd
b692056db8 USB: Fix novation SourceControl XL after suspend
Currently, the SourceControl will stay in power-down mode after resuming
from suspend. This patch resets the device after suspend to power it up.

Signed-off-by: Richard Dodd <richard.o.dodd@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200212142220.36892-1-richard.o.dodd@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-12 09:54:07 -08:00
Mathias Nyman
cf0ee7c60c xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2
xhci driver assumed that xHC controllers have at most one custom
supported speed table (PSI) for all usb 3.x ports.
Memory was allocated for one PSI table under the xhci hub structure.

Turns out this is not the case, some controllers have a separate
"supported protocol capability" entry with a PSI table for each port.
This means each usb3 roothub port can in theory support different custom
speeds.

To solve this, cache all supported protocol capabilities with their PSI
tables in an array, and add pointers to the xhci port structure so that
every port points to its capability entry in the array.

When creating the SuperSpeedPlus USB Device Capability BOS descriptor
for the xhci USB 3.1 roothub we for now will use only data from the
first USB 3.1 capable protocol capability entry in the array.
This could be improved later, this patch focuses resolving
the memory leak.

Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reported-by: Sajja Venkateswara Rao <VenkateswaraRao.Sajja@amd.com>
Fixes: 47189098f8 ("xhci: parse xhci protocol speed ID list for usb 3.1 usage")
Cc: stable <stable@vger.kernel.org> # v4.4+
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200211150158.14475-1-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-12 09:51:09 -08:00
Greg Kroah-Hartman
67f68f977a Revert "xhci: Fix memory leak when caching protocol extended capability PSI tables"
This reverts commit fc57313d10.

Marek reports that it breaks things:
	This patch landed in today's linux-next (20200211) and causes
	NULL pointer dereference during second suspend/resume cycle on
	Samsung Exynos5422-based (arm 32bit) Odroid XU3lite board:

A more complete fix will be added soon.

Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: fc57313d10 ("xhci: Fix memory leak when caching protocol extended capability PSI tables")
Cc: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Sajja Venkateswara Rao <VenkateswaraRao.Sajja@amd.com>
Cc: stable <stable@vger.kernel.org> # v4.4+
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-12 09:48:57 -08:00
Firo Yang
0f90522591 enic: prevent waking up stopped tx queues over watchdog reset
Recent months, our customer reported several kernel crashes all
preceding with following message:
NETDEV WATCHDOG: eth2 (enic): transmit queue 0 timed out
Error message of one of those crashes:
BUG: unable to handle kernel paging request at ffffffffa007e090

After analyzing severl vmcores, I found that most of crashes are
caused by memory corruption. And all the corrupted memory areas
are overwritten by data of network packets. Moreover, I also found
that the tx queues were enabled over watchdog reset.

After going through the source code, I found that in enic_stop(),
the tx queues stopped by netif_tx_disable() could be woken up over
a small time window between netif_tx_disable() and the
napi_disable() by the following code path:
napi_poll->
  enic_poll_msix_wq->
     vnic_cq_service->
        enic_wq_service->
           netif_wake_subqueue(enic->netdev, q_number)->
              test_and_clear_bit(__QUEUE_STATE_DRV_XOFF, &txq->state)
In turn, upper netowrk stack could queue skb to ENIC NIC though
enic_hard_start_xmit(). And this might introduce some race condition.

Our customer comfirmed that this kind of kernel crash doesn't occur over
90 days since they applied this patch.

Signed-off-by: Firo Yang <firo.yang@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-12 09:43:26 -08:00
Stephan Gerhold
5c320b6ce7
drm/modes: Allow DRM_MODE_ROTATE_0 when applying video mode parameters
At the moment, only DRM_MODE_ROTATE_180 is allowed when we try to apply
the rotation from the video mode parameters. It is also useful to allow
DRM_MODE_ROTATE_0 in case there is only a reflect option in the video mode
parameter (e.g. video=540x960,reflect_x).

DRM_MODE_ROTATE_0 means "no rotation" and should therefore not require
any special handling, so we can just add it to the if condition.

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200117153429.54700-3-stephan@gerhold.net
2020-02-12 18:32:58 +01:00
Stephan Gerhold
e6980a7271
drm/modes: Make sure to parse valid rotation value from cmdline
A rotation value should have exactly one rotation angle.
At the moment there is no validation for this when parsing video=
parameters from the command line. This causes problems later on
when we try to combine the command line rotation with the panel
orientation.

To make sure that we generate a valid rotation value:
  - Set DRM_MODE_ROTATE_0 by default (if no rotate= option is set)
  - Validate that there is exactly one rotation angle set
    (i.e. specifying the rotate= option multiple times is invalid)

Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20200117153429.54700-2-stephan@gerhold.net
2020-02-12 18:32:54 +01:00
Maxime Ripard
b50f4f940b
dt-bindings: display: sunxi: Fix compatible
Commit f5a98bfe7b ("dt-bindings: display: Convert Allwinner display
pipeline to schemas") introduced a YAML schema for the Allwinner TCON DT
binding, but the H6 TCON-TV compatible was mistakenly set to fallback on
the A83t's, while the initial documentation and the DT are using R40's.

Fix that.

Fixes: f5a98bfe7b ("dt-bindings: display: Convert Allwinner display pipeline to schemas")
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200210100455.78695-1-maxime@cerno.tech
2020-02-12 18:32:22 +01:00
Anand Jain
1b9867eb61 btrfs: sysfs, move device id directories to UUID/devinfo
Originally it was planned to create device id directories under
UUID/devinfo, but it got under UUID/devices by mistake. We really want
it under definfo so the bare device node names are not mixed with device
ids and are easy to enumerate.

Fixes: 668e48af7a ("btrfs: sysfs, add devid/dev_state kobject and device attributes")
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-02-12 18:28:22 +01:00
Anand Jain
a013d141ec btrfs: sysfs, add UUID/devinfo kobject
Create directory /sys/fs/btrfs/UUID/devinfo to hold devices directories
by the id (unlike /devices).

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-02-12 18:28:18 +01:00
Geert Uytterhoeven
d91771848f arm64: time: Replace <linux/clk-provider.h> by <linux/of_clk.h>
The arm64 time code is not a clock provider, and just needs to call
of_clk_init().

Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.

Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Will Deacon <will@kernel.org>
2020-02-12 17:26:38 +00:00
Jakub Sitnicki
eecd618b45 selftests/bpf: Mark SYN cookie test skipped for UDP sockets
SYN cookie test with reuseport BPF doesn't make sense for UDP sockets. We
don't run it but the test_progs test runner doesn't know about it. Mark the
test as skipped so the test_progs can report correctly how many tests were
skipped.

Fixes: 7ee0d4e97b ("selftests/bpf: Switch reuseport tests for test_progs framework")
Reported-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200212103208.438419-1-jakub@cloudflare.com
2020-02-12 17:44:44 +01:00
Martin KaFai Lau
2fe7710055 selftests/bpf: Fix error checking on reading the tcp_fastopen sysctl
There is a typo in checking the "saved_tcp_fo" and instead
"saved_tcp_syncookie" is checked again.  This patch fixes it
and also breaks them into separate if statements such that
the test will abort asap.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200211175910.3235321-1-kafai@fb.com
2020-02-12 17:44:37 +01:00
Joe Perches
d49f2c5063 rtw88: 8822[bc]: Make tables const, reduce data object size
Reduce the data size 2kb or 3kb by making tables const.
Add const to pointer declarations to make compilation work too.

(x86-64 defconfig)
$ size drivers/net/wireless/realtek/rtw88/rtw8822?.o*
   text	   data	    bss	    dec	    hex	filename
  25054	    672	      8	  25734	   6486	drivers/net/wireless/realtek/rtw88/rtw8822b.o.new
  23870	   1872	      8	  25750	   6496	drivers/net/wireless/realtek/rtw88/rtw8822b.o.old
  53646	    828	      0	  54474	   d4ca	drivers/net/wireless/realtek/rtw88/rtw8822c.o.new
  52846	   1652	      0	  54498	   d4e2	drivers/net/wireless/realtek/rtw88/rtw8822c.o.old

(x86-64 allyesconfig)
$ size drivers/net/wireless/realtek/rtw88/rtw8822?.o*
   text	   data	    bss	    dec	    hex	filename
  45811	   6280	    128	  52219	   cbfb	drivers/net/wireless/realtek/rtw88/rtw8822b.o.new
  44211	   7880	    128	  52219	   cbfb	drivers/net/wireless/realtek/rtw88/rtw8822b.o.old
 100195	   8128	      0	 108323	  1a723	drivers/net/wireless/realtek/rtw88/rtw8822c.o.new
  98947	   9376	      0	 108323	  1a723	drivers/net/wireless/realtek/rtw88/rtw8822c.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:22:33 +02:00
Yan-Hsuan Chuang
74c3d72cc1 rtw88: disable TX-AMSDU on 2.4G band
Some tests shows that using AMSDU to aggregate TCP ACKs to specific
APs will degrade the throughput on 2.4G band in 20MHz bandwidth
(< 10 Mbps, should be ~100 Mbps for 2x2). Also found that there's
barely no negative impact if we disable TX AMSDU on 2.4G to connect
to other APs. So it seems like we can just tell mac80211 to not to
aggregate MSDUs when transmitting on 2.4G band.

Note that we still can TX AMSDU on 5G band and benefit from it by
having 50 ~ 70 Mbps throughput improvement.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Reviewed-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:22:01 +02:00
Chien-Hsun Liao
9c714b7caa rtw88: 8822c: modify rf protection setting
According to some experiments, the original RF register protection
setting of 8822c cannot perfectly make sure that there is no hardware
PI write (direct) during direct write. Modify the setting so that the
hardware block of PI would be turned off via rtw8822c_rstb_3wire()
during the direct write, to avoid RF register racing.

Note that 8822b uses SIPI write (indirect), so 8822b does not
have such problem.

Signed-off-by: Chien-Hsun Liao <ben.liao@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Reviewed-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:20:40 +02:00
Ping-Ke Shih
40fb04b22f rtw88: Use secondary channel offset enumeration
The hardware value of secondary channel offset isn't very intuitive. This
commit adds enumeration, so we can easier to check the logic with the
suffix of enumeration name, likes _UPPER or _LOWER.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Reviewed-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:20:39 +02:00
Dan Carpenter
bafbc6f0b5 rtw88: Use kfree_skb() instead of kfree()
sk_buff structs need to be freed with kfree_skb(), not kfree().

Fixes: b6c12908a3 ("rtw88: Add wowlan net-detect support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:19:51 +02:00
Martin Kepplinger
16bbc3eb83 rsi: fix null pointer dereference during rsi_shutdown()
Appearently the hw pointer can be NULL while the module is loaded and
in that case rsi_shutdown() crashes due to the unconditional dereference.

Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:19:14 +02:00
Tzu-En Huang
8299adec99 rtw88: 8822c: update power sequence to v16
Fix switching xtal mode leads to BT USB error issue.

Signed-off-by: Tzu-En Huang <tehuang@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:18:30 +02:00
Ping-Ke Shih
55cc84421c rtw88: add ciphers to suppress error message
Though hardware isn't implement CCMP-256, GCMP and GCMP-256, it's possible
to fallback to use software de-/en-cryption implemented by mac80211.

Without adding these chipers, kernel log will show something if we connect
to a WPA3 enterprise AP, likes
  wlan0: failed to set key (1, ff:ff:ff:ff:ff:ff) to hardware (-524)

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:18:29 +02:00
Yan-Hsuan Chuang
6eab0ba99b rtw88: avoid holding mutex for cancel_delayed_work_sync()
Driver could possibly be dead-locked while canceling works with
*_sync() with mutex lock held. Those cancel_delayed_work_sync()
functions will wait until the work is done, but if we hold the
lock, they will never acquire the lock.

To prevent this, simply release the lock and acquire again after
the works have been canceled. And to avoid the works being queued
again, check if the device is at RTW_FLAG_RUNNING state, otherwise
just return and do nothing.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:18:28 +02:00
Ping-Ke Shih
398b9bdab2 rtw88: move rtw_enter_ips() to the last when config
When driver is coming up, mac80211 will set changed as ~0 (0xffffffff),
and driver could enter IDLE state (power off) before switching channel or
other config event. So move rtw_enter_ips() to the last, to make sure the
driver completed the config events before going to IDLE state.

So, moves leave/enter IPS config to be first/last one according to flag
IEEE80211_CONF_IDLE. If there're more configureations we want to add in
the future, they must locate between leave/enter IPS.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Reviewed-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:18:27 +02:00
Yan-Hsuan Chuang
2a4225551a rtw88: pci: 8822c should set clock delay to zero
Since RTL8822CE has enabled reference clock auto calibration,
there is no need to add any clock delay for covering the timing
gap of the reference clock.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:18:25 +02:00
Yan-Hsuan Chuang
9e01c07069 rtw88: add rtw_read8_mask and rtw_read16_mask
Both are missing but could be used sometimes.

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:18:24 +02:00
Yan-Hsuan Chuang
597fc0e6ad rtw88: remove unused parameter vif in rtw_lps_pg_info_get()
vif is not used, remove it

Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Reviewed-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:18:23 +02:00
Guenter Roeck
863844ee3b brcmfmac: abort and release host after error
With commit 216b44000a ("brcmfmac: Fix use after free in
brcmf_sdio_readframes()") applied, we see locking timeouts in
brcmf_sdio_watchdog_thread().

brcmfmac: brcmf_escan_timeout: timer expired
INFO: task brcmf_wdog/mmc1:621 blocked for more than 120 seconds.
Not tainted 4.19.94-07984-g24ff99a0f713 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
brcmf_wdog/mmc1 D    0   621      2 0x00000000 last_sleep: 2440793077.  last_runnable: 2440766827
[<c0aa1e60>] (__schedule) from [<c0aa2100>] (schedule+0x98/0xc4)
[<c0aa2100>] (schedule) from [<c0853830>] (__mmc_claim_host+0x154/0x274)
[<c0853830>] (__mmc_claim_host) from [<bf10c5b8>] (brcmf_sdio_watchdog_thread+0x1b0/0x1f8 [brcmfmac])
[<bf10c5b8>] (brcmf_sdio_watchdog_thread [brcmfmac]) from [<c02570b8>] (kthread+0x178/0x180)

In addition to restarting or exiting the loop, it is also necessary to
abort the command and to release the host.

Fixes: 216b44000a ("brcmfmac: Fix use after free in brcmf_sdio_readframes()")
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: franky.lin@broadcom.com
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:17:38 +02:00
Filipe Manana
28553fa992 Btrfs: fix race between shrinking truncate and fiemap
When there is a fiemap executing in parallel with a shrinking truncate
we can end up in a situation where we have extent maps for which we no
longer have corresponding file extent items. This is generally harmless
and at the moment the only consequences are missing file extent items
representing holes after we expand the file size again after the
truncate operation removed the prealloc extent items, and stale
information for future fiemap calls (reporting extents that no longer
exist or may have been reallocated to other files for example).

Consider the following example:

1) Our inode has a size of 128KiB, one 128KiB extent at file offset 0
   and a 1MiB prealloc extent at file offset 128KiB;

2) Task A starts doing a shrinking truncate of our inode to reduce it to
   a size of 64KiB. Before it searches the subvolume tree for file
   extent items to delete, it drops all the extent maps in the range
   from 64KiB to (u64)-1 by calling btrfs_drop_extent_cache();

3) Task B starts doing a fiemap against our inode. When looking up for
   the inode's extent maps in the range from 128KiB to (u64)-1, it
   doesn't find any in the inode's extent map tree, since they were
   removed by task A.  Because it didn't find any in the extent map
   tree, it scans the inode's subvolume tree for file extent items, and
   it finds the 1MiB prealloc extent at file offset 128KiB, then it
   creates an extent map based on that file extent item and adds it to
   inode's extent map tree (this ends up being done by
   btrfs_get_extent() <- btrfs_get_extent_fiemap() <-
   get_extent_skip_holes());

4) Task A then drops the prealloc extent at file offset 128KiB and
   shrinks the 128KiB extent file offset 0 to a length of 64KiB. The
   truncation operation finishes and we end up with an extent map
   representing a 1MiB prealloc extent at file offset 128KiB, despite we
   don't have any more that extent;

After this the two types of problems we have are:

1) Future calls to fiemap always report that a 1MiB prealloc extent
   exists at file offset 128KiB. This is stale information, no longer
   correct;

2) If the size of the file is increased, by a truncate operation that
   increases the file size or by a write into a file offset > 64KiB for
   example, we end up not inserting file extent items to represent holes
   for any range between 128KiB and 128KiB + 1MiB, since the hole
   expansion function, btrfs_cont_expand() will skip hole insertion for
   any range for which an extent map exists that represents a prealloc
   extent. This causes fsck to complain about missing file extent items
   when not using the NO_HOLES feature.

The second issue could be often triggered by test case generic/561 from
fstests, which runs fsstress and duperemove in parallel, and duperemove
does frequent fiemap calls.

Essentially the problems happens because fiemap does not acquire the
inode's lock while truncate does, and fiemap locks the file range in the
inode's iotree while truncate does not. So fix the issue by making
btrfs_truncate_inode_items() lock the file range from the new file size
to (u64)-1, so that it serializes with fiemap.

CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-02-12 17:17:10 +01:00
David Sterba
10a3a3edc5 btrfs: log message when rw remount is attempted with unclean tree-log
A remount to a read-write filesystem is not safe when there's tree-log
to be replayed. Files that could be opened until now might be affected
by the changes in the tree-log.

A regular mount is needed to replay the log so the filesystem presents
the consistent view with the pending changes included.

CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-02-12 17:17:00 +01:00
David Sterba
e8294f2f6a btrfs: print message when tree-log replay starts
There's no logged information about tree-log replay although this is
something that points to previous unclean unmount. Other filesystems
report that as well.

Suggested-by: Chris Murphy <lists@colorremedies.com>
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-02-12 17:16:57 +01:00
Sergey Matyukevich
946d077a42 qtnfmac: fix potential Spectre vulnerabilities
Fix potential Spectre vulnerabilities and other warnings
reported by smatch:

drivers/net/wireless/quantenna/qtnfmac/core.c:49 qtnf_core_get_mac() warn: potential spectre issue 'bus->mac' [r] (local cap)
drivers/net/wireless/quantenna/qtnfmac/core.c:51 qtnf_core_get_mac() warn: possible spectre second half.  'mac'
drivers/net/wireless/quantenna/qtnfmac/event.c:671 qtnf_event_parse() warn: potential spectre issue 'mac->iflist' [r] (local cap)
drivers/net/wireless/quantenna/qtnfmac/pcie/pearl_pcie.c:912 qtnf_pcie_skb_send() warn: variable dereferenced before check 'skb' (see line 881)

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:49 +02:00
Igor Mitsyanko
501c3be1ec qtnfmac: drop unnecessary TLVs from scan command
Most part of scan command data is always present, so no need
to keep it in TLV. Simplify scan command processing moving
most part of its parameters into a fixed part of
qlink_cmd_scan message.

Use fixed dwell time values for normal scan when device is not
connected, and allow wireless card decide on dwell times by
itself if it's operating as a STA and is connected. When
connected, card can select dwell times dynamically based on
traffic conditions to get best results.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:48 +02:00
Igor Mitsyanko
5edadc5a3f qtnfmac: update channel switch command to support 6GHz band
With an addition of 6GHz band support, channel number can no longer be
used to uniquely identify a specific channel. Modify channel switch
command to use chandef data.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:47 +02:00
Filipe Manana
ac05ca913e Btrfs: fix race between using extent maps and merging them
We have a few cases where we allow an extent map that is in an extent map
tree to be merged with other extents in the tree. Such cases include the
unpinning of an extent after the respective ordered extent completed or
after logging an extent during a fast fsync. This can lead to subtle and
dangerous problems because when doing the merge some other task might be
using the same extent map and as consequence see an inconsistent state of
the extent map - for example sees the new length but has seen the old start
offset.

With luck this triggers a BUG_ON(), and not some silent bug, such as the
following one in __do_readpage():

  $ cat -n fs/btrfs/extent_io.c
  3061  static int __do_readpage(struct extent_io_tree *tree,
  3062                           struct page *page,
  (...)
  3127                  em = __get_extent_map(inode, page, pg_offset, cur,
  3128                                        end - cur + 1, get_extent, em_cached);
  3129                  if (IS_ERR_OR_NULL(em)) {
  3130                          SetPageError(page);
  3131                          unlock_extent(tree, cur, end);
  3132                          break;
  3133                  }
  3134                  extent_offset = cur - em->start;
  3135                  BUG_ON(extent_map_end(em) <= cur);
  (...)

Consider the following example scenario, where we end up hitting the
BUG_ON() in __do_readpage().

We have an inode with a size of 8KiB and 2 extent maps:

  extent A: file offset 0, length 4KiB, disk_bytenr = X, persisted on disk by
            a previous transaction

  extent B: file offset 4KiB, length 4KiB, disk_bytenr = X + 4KiB, not yet
            persisted but writeback started for it already. The extent map
	    is pinned since there's writeback and an ordered extent in
	    progress, so it can not be merged with extent map A yet

The following sequence of steps leads to the BUG_ON():

1) The ordered extent for extent B completes, the respective page gets its
   writeback bit cleared and the extent map is unpinned, at that point it
   is not yet merged with extent map A because it's in the list of modified
   extents;

2) Due to memory pressure, or some other reason, the MM subsystem releases
   the page corresponding to extent B - btrfs_releasepage() is called and
   returns 1, meaning the page can be released as it's not dirty, not under
   writeback anymore and the extent range is not locked in the inode's
   iotree. However the extent map is not released, either because we are
   not in a context that allows memory allocations to block or because the
   inode's size is smaller than 16MiB - in this case our inode has a size
   of 8KiB;

3) Task B needs to read extent B and ends up __do_readpage() through the
   btrfs_readpage() callback. At __do_readpage() it gets a reference to
   extent map B;

4) Task A, doing a fast fsync, calls clear_em_loggin() against extent map B
   while holding the write lock on the inode's extent map tree - this
   results in try_merge_map() being called and since it's possible to merge
   extent map B with extent map A now (the extent map B was removed from
   the list of modified extents), the merging begins - it sets extent map
   B's start offset to 0 (was 4KiB), but before it increments the map's
   length to 8KiB (4kb + 4KiB), task A is at:

   BUG_ON(extent_map_end(em) <= cur);

   The call to extent_map_end() sees the extent map has a start of 0
   and a length still at 4KiB, so it returns 4KiB and 'cur' is 4KiB, so
   the BUG_ON() is triggered.

So it's dangerous to modify an extent map that is in the tree, because some
other task might have got a reference to it before and still using it, and
needs to see a consistent map while using it. Generally this is very rare
since most paths that lookup and use extent maps also have the file range
locked in the inode's iotree. The fsync path is pretty much the only
exception where we don't do it to avoid serialization with concurrent
reads.

Fix this by not allowing an extent map do be merged if if it's being used
by tasks other then the one attempting to merge the extent map (when the
reference count of the extent map is greater than 2).

Reported-by: ryusuke1925 <st13s20@gm.ibaraki-ct.ac.jp>
Reported-by: Koki Mitani <koki.mitani.xg@hco.ntt.co.jp>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=206211
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-02-12 17:16:46 +01:00
Igor Mitsyanko
8b0b5f1ba9 qtnfmac: cleanup alignment in firmware communication protocol
Make sure that all elements in QLINK protocol message are aligned to
4 bytes. For this purpose add necessary amount of padding bytes to
each message. Besides, add padding for non-aligned variable length
fields, e.g. SSID, so that the first byte of the next variable length
element is aligned. to 4 bytes. Finally, introduce TLV parsing helpers
to reduce boilerplate TLV parsing code.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:46 +02:00
Igor Mitsyanko
0d18a9c0a3 qtnfmac: pass max scan SSIDs limit on per-radio basis
Each radio on a given wifi device may have different max scan SSIDs
limitation, so take this information from a per-radio info structure.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:45 +02:00
Igor Mitsyanko
601ce21ff8 qtnfmac: implement extendable channel survey dump
Switch to extendable implementation of channel survey dump to make sure
that any new channel statistics can be added in the future without any
backwards compatibility issues. For this purpose use a separate variable
length bitmap to pass the list of valid statistics in firmware response.
Besides, switch to using channel frequency instead of IEEE channel
number to prepare for adding support of 6GHz band.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:44 +02:00
Igor Mitsyanko
bc5db734c1 qtnfmac: drop QTN_TLV_ID_NUM_IFACE_COMB TLV type
Information about interface combinations is now available in a fixed
portion of struct qlink_resp_get_mac_info. Use that information to
get interface combinations. TLV type QTN_TLV_ID_NUM_IFACE_COMB is
not needed anymore and can be dropped.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:43 +02:00
Igor Mitsyanko
e70cf22bc7 qtnfmac: merge PHY_PARAMS_GET into MAC_INFO
QLINK_CMD_PHY_PARAMS_GET command does not need to be separate,
it can be included into GET_MAC_INFO command. Merge these two
commands adding all the missing wiphy data.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:41 +02:00
Igor Mitsyanko
310cd5dd50 qtnfmac: pass hardware capabilities in TLV element
To support any number of capabilities bits in the future,
replace u32 capabilities bitmask by array. Pass
capabilities from firmware using TLV element.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:40 +02:00
Igor Mitsyanko
a3ebb0335c qtnfmac: use MAJOR.MINOR format for firmware protocol
Use MAJOR.MINOR format for QLink firmware protocol. MAJOR part is
incremented when backward compatibility is broken. Normally this
part should not be incremented unless there is a good reason for
that. MINOR part is incremented each time when new features are
added to qlink.h, e.g. new TLVs, events, commands. These changes
should not break backward compatibility. For instance, older
firmware versions may not be able to parse new flags or send new
types of events, but this does not impact normal system operations.

As part of initialization sequence, driver requests protocol version
from firmware and refuses to start in case there is a mismatch in MAJOR
part of the version.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:16:39 +02:00
Wenwen Wang
f311ade3a7 btrfs: ref-verify: fix memory leaks
In btrfs_ref_tree_mod(), 'ref' and 'ra' are allocated through kzalloc() and
kmalloc(), respectively. In the following code, if an error occurs, the
execution will be redirected to 'out' or 'out_unlock' and the function will
be exited. However, on some of the paths, 'ref' and 'ra' are not
deallocated, leading to memory leaks. For example, if 'action' is
BTRFS_ADD_DELAYED_EXTENT, add_block_entry() will be invoked. If the return
value indicates an error, the execution will be redirected to 'out'. But,
'ref' is not deallocated on this path, causing a memory leak.

To fix the above issues, deallocate both 'ref' and 'ra' before exiting from
the function when an error is encountered.

CC: stable@vger.kernel.org # 4.15+
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2020-02-12 17:16:31 +01:00
H. Nikolaus Schaller
346bdd8e97 wl1251: remove ti,power-gpio for SDIO mode
Remove handling of this property from code.

Note that wl->power_gpio is still needed in
the header file for SPI mode (N900).

Suggested by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:15:53 +02:00
H. Nikolaus Schaller
57f0a29c3e DTS: bindings: wl1251: mark ti,power-gpio as optional
It is now only useful for SPI interface.
Power control of SDIO mode is done through mmc core.

Suggested by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:15:52 +02:00
brian m. carlson
24f0bd1362 brcmfmac: add the BRCM 4364 found in MacBook Pro 15,2
The 2018 13" MacBook Pro (MacBookPro15,2) has a Broadcom chip, the 4364.
This chip appears to be specific to Apple and is not found in other
hardware.

Add this chip to the brcmfmac driver so that it can be recognized
automatically.  Note that the PCI device id is 4464 even though the chip
is referred to as the 4364.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2020-02-12 18:12:51 +02:00
Arnaldo Carvalho de Melo
2a8d017d46 tools headers kvm: Sync linux/kvm.h with the kernel sources
To pick up the changes from:

  7de3f1423f ("KVM: s390: Add new reset vcpu API")

So far we're ignoring those arch specific ioctls, we need to revisit
this at some time to have arch specific tables, etc:

  $ grep S390 tools/perf/trace/beauty/kvm_ioctl.sh
  	egrep -v " ((ARM|PPC|S390)_|[GS]ET_(DEBUGREGS|PIT2|XSAVE|TSC_KHZ)|CREATE_SPAPR_TCE_64)" | \
  $

This addresses these tools/perf build warnings:

  Warning: Kernel ABI header at 'tools/arch/arm/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm/include/uapi/asm/kvm.h'
  diff -u tools/arch/arm/include/uapi/asm/kvm.h arch/arm/include/uapi/asm/kvm.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 12:45:24 -03:00
Arnaldo Carvalho de Melo
391df72fbd tools headers kvm: Sync kvm headers with the kernel sources
To pick up the changes from:

  290a6bb06d ("arm64: KVM: Add UAPI notes for swapped registers")

No tools changes are caused by this.

This addresses these tools/perf build warnings:

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andrew Jones <drjones@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 12:41:20 -03:00
Arnaldo Carvalho de Melo
71dd652897 tools arch x86: Sync asm/cpufeatures.h with the kernel sources
To pick up the changes from:

  85c17291e2 ("x86/cpufeatures: Add flag to track whether MSR IA32_FEAT_CTL is configured")
  f444a5ff95 ("x86/cpufeatures: Add support for fast short REP; MOVSB")

These don't cause any changes in tooling, just silences this perf build
warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
  diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 12:33:34 -03:00
Arnaldo Carvalho de Melo
7636b58639 tools headers x86: Sync disabled-features.h
To silence the following tools/perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h'
  diff -u tools/arch/x86/include/asm/disabled-features.h arch/x86/include/asm/disabled-features.h

Picking up the changes in:

  45fc24e89b ("x86/mpx: remove MPX from arch/x86")

that didn't entail any functionality change in the tooling side.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 12:29:41 -03:00
Chris Wilson
2aaaa5ee1c drm/i915: Mark the removal of the i915_request from the sched.link
Keep the rq->fence.flags consistent with the status of the
rq->sched.link, and clear the associated bits when decoupling the link
on retirement (as we may wish to inspect those flags independent of
other state).

Fixes: c3f1ed90e6 ("drm/i915/gt: Allow temporary suspension of inflight requests")
References: https://gitlab.freedesktop.org/drm/intel/issues/997
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200122140243.495621-3-chris@chris-wilson.co.uk
(cherry picked from commit b4a9a149f9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2020-02-12 17:04:33 +02:00