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v2: removed TODO reminder
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Link: http://patchwork.freedesktop.org/patch/msgid/a4e0ae09-a73c-1c62-04ef-3f990d41bea9@virtuozzo.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Fix the following coccicheck warning:
sound/pci/hda/patch_hdmi.c:1852:2-8: preceding lock on line 1846
After add sanity check to pass klockwork check,
The spdif_mutex should be unlock before return true
in check_non_pcm_per_cvt().
Fixes: 960a581e22d9 ("ALSA: hda: fix some klockwork scan warnings")
Signed-off-by: Wu Bo <wubo40@huawei.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1587907042-694161-1-git-send-email-wubo40@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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When adding devices that don't have a scsi_dh on a BIO based multipath,
I was able to consistently hit the warning below and lock-up the system.
The problem is that __map_bio reads the flag before it potentially being
modified by choose_pgpath, and ends up using the older value.
The WARN_ON below is not trivially linked to the issue. It goes like
this: The activate_path delayed_work is not initialized for non-scsi_dh
devices, but we always set MPATHF_QUEUE_IO, asking for initialization.
That is fine, since MPATHF_QUEUE_IO would be cleared in choose_pgpath.
Nevertheless, only for BIO-based mpath, we cache the flag before calling
choose_pgpath, and use the older version when deciding if we should
initialize the path. Therefore, we end up trying to initialize the
paths, and calling the non-initialized activate_path work.
[ 82.437100] ------------[ cut here ]------------
[ 82.437659] WARNING: CPU: 3 PID: 602 at kernel/workqueue.c:1624
__queue_delayed_work+0x71/0x90
[ 82.438436] Modules linked in:
[ 82.438911] CPU: 3 PID: 602 Comm: systemd-udevd Not tainted 5.6.0-rc6+ #339
[ 82.439680] RIP: 0010:__queue_delayed_work+0x71/0x90
[ 82.440287] Code: c1 48 89 4a 50 81 ff 00 02 00 00 75 2a 4c 89 cf e9
94 d6 07 00 e9 7f e9 ff ff 0f 0b eb c7 0f 0b 48 81 7a 58 40 74 a8 94 74
a7 <0f> 0b 48 83 7a 48 00 74 a5 0f 0b eb a1 89 fe 4c 89 cf e9 c8 c4 07
[ 82.441719] RSP: 0018:ffffb738803977c0 EFLAGS: 00010007
[ 82.442121] RAX: ffffa086389f9740 RBX: 0000000000000002 RCX: 0000000000000000
[ 82.442718] RDX: ffffa086350dd930 RSI: ffffa0863d76f600 RDI: 0000000000000200
[ 82.443484] RBP: 0000000000000200 R08: 0000000000000000 R09: ffffa086350dd970
[ 82.444128] R10: 0000000000000000 R11: 0000000000000000 R12: ffffa086350dd930
[ 82.444773] R13: ffffa0863d76f600 R14: 0000000000000000 R15: ffffa08636738008
[ 82.445427] FS: 00007f6abfe9dd40(0000) GS:ffffa0863dd80000(0000) knlGS:00000
[ 82.446040] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 82.446478] CR2: 0000557d288db4e8 CR3: 0000000078b36000 CR4: 00000000000006e0
[ 82.447104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 82.447561] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 82.448012] Call Trace:
[ 82.448164] queue_delayed_work_on+0x6d/0x80
[ 82.448472] __pg_init_all_paths+0x7b/0xf0
[ 82.448714] pg_init_all_paths+0x26/0x40
[ 82.448980] __multipath_map_bio.isra.0+0x84/0x210
[ 82.449267] __map_bio+0x3c/0x1f0
[ 82.449468] __split_and_process_non_flush+0x14a/0x1b0
[ 82.449775] __split_and_process_bio+0xde/0x340
[ 82.450045] ? dm_get_live_table+0x5/0xb0
[ 82.450278] dm_process_bio+0x98/0x290
[ 82.450518] dm_make_request+0x54/0x120
[ 82.450778] generic_make_request+0xd2/0x3e0
[ 82.451038] ? submit_bio+0x3c/0x150
[ 82.451278] submit_bio+0x3c/0x150
[ 82.451492] mpage_readpages+0x129/0x160
[ 82.451756] ? bdev_evict_inode+0x1d0/0x1d0
[ 82.452033] read_pages+0x72/0x170
[ 82.452260] __do_page_cache_readahead+0x1ba/0x1d0
[ 82.452624] force_page_cache_readahead+0x96/0x110
[ 82.452903] generic_file_read_iter+0x84f/0xae0
[ 82.453192] ? __seccomp_filter+0x7c/0x670
[ 82.453547] new_sync_read+0x10e/0x190
[ 82.453883] vfs_read+0x9d/0x150
[ 82.454172] ksys_read+0x65/0xe0
[ 82.454466] do_syscall_64+0x4e/0x210
[ 82.454828] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[...]
[ 82.462501] ---[ end trace bb39975e9cf45daa ]---
Cc: stable@vger.kernel.org
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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The IRQ postinstall handling had open-coded pipe fault mask selection
that never got updated for gen11. Switch it to use
gen8_de_pipe_fault_mask() to ensure we don't miss updates for new
platforms.
Cc: José Roberto de Souza <jose.souza@intel.com>
Fixes: d506a65d56fd ("drm/i915: Catch GTT fault errors for gen11+ planes")
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200424231423.4065231-1-matthew.d.roper@intel.com
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit 869129ee0c624a78c74e50b51635e183196cd2c6)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Pull vfs fixes from Al Viro:
"Two old bugs..."
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
propagate_one(): mnt_set_mountpoint() needs mount_lock
dlmfs_file_write(): fix the bogosity in handling non-zero *ppos
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Commit 6fcf0c72e4b9, a fix to get_tree_bdev() put a missing blkdev_put() in
the wrong place, before a warnf() that displays the bdev under
consideration rather after it.
This results in a silent lockup in printk("%pg") called via warnf() from
get_tree_bdev() under some circumstances when there's a race with the
blockdev being frozen. This can be caused by xfstests/tests/generic/085 in
combination with Lukas Czerner's ext4 mount API conversion patchset. It
looks like it ought to occur with other users of get_tree_bdev() such as
XFS, but apparently doesn't.
Fix this by switching the order of the lines.
Fixes: 6fcf0c72e4b9 ("vfs: add missing blkdev_put() in get_tree_bdev()")
Reported-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Ian Kent <raven@themaw.net>
cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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We should check null before do x25_neigh_put in x25_disconnect,
otherwise may cause null-ptr-deref like this:
#include <sys/socket.h>
#include <linux/x25.h>
int main() {
int sck_x25;
sck_x25 = socket(AF_X25, SOCK_SEQPACKET, 0);
close(sck_x25);
return 0;
}
BUG: kernel NULL pointer dereference, address: 00000000000000d8
CPU: 0 PID: 4817 Comm: t2 Not tainted 5.7.0-rc3+ #159
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-
RIP: 0010:x25_disconnect+0x91/0xe0
Call Trace:
x25_release+0x18a/0x1b0
__sock_release+0x3d/0xc0
sock_close+0x13/0x20
__fput+0x107/0x270
____fput+0x9/0x10
task_work_run+0x6d/0xb0
exit_to_usermode_loop+0x102/0x110
do_syscall_64+0x23c/0x260
entry_SYSCALL_64_after_hwframe+0x49/0xb3
Reported-by: syzbot+6db548b615e5aeefdce2@syzkaller.appspotmail.com
Fixes: 4becb7ee5b3d ("net/x25: Fix x25_neigh refcnt leak when x25 disconnect")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This fixes the following build warning in ena_xdp_set(), which is
observed on aarch64 with 64KB page size.
In file included from ./include/net/inet_sock.h:19,
from ./include/net/ip.h:27,
from drivers/net/ethernet/amazon/ena/ena_netdev.c:46:
drivers/net/ethernet/amazon/ena/ena_netdev.c: In function \
‘ena_xdp_set’: \
drivers/net/ethernet/amazon/ena/ena_netdev.c:557:6: warning: \
format ‘%lu’ \
expects argument of type ‘long unsigned int’, but argument 4 \
has type ‘int’ \
[-Wformat=] "Failed to set xdp program, the current MTU (%d) is \
larger than the maximum allowed MTU (%lu) while xdp is on",
Signed-off-by: Gavin Shan <gshan@redhat.com>
Acked-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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[Why]
Current locking scheme for cursor can result in a flip missing
its vsync, deferring it for one or more vsyncs. Result is a
potential for stuttering when cursor is moved.
[How]
Use cursor update lock so that flips are not blocked while cursor
is being programmed.
Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[WHY]
The downspread percentage was copied over from a previous version
of the display_mode_lib spreadsheet. This value has been updated,
and the previous value is too high to allow for such modes as
4K120hz. The new value is sufficient for such modes.
[HOW]
Update the value in dcn21_resource to match the spreadsheet.
Signed-off-by: Sung Lee <sung.lee@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
Fixes the following scenario:
- Flip has been prepared sometime during the frame, update pending
- Cursor update happens right when VUPDATE would happen
- OPTC lock acquired, VUPDATE is blocked until next frame
- Flip is delayed potentially infinitely
With the igt@kms_cursor_legacy cursor-vs-flip-legacy test we can
observe nearly *13* frames of delay for some flips on Navi.
[How]
Apply the Raven workaround generically. When close enough to VUPDATE
block cursor updates from occurring from the dc_stream_set_cursor_*
helpers.
This could perhaps be a little smarter by checking if there were
pending updates or flips earlier in the frame on the HUBP side before
applying the delay, but this should be fine for now.
This fixes the kms_cursor_legacy test.
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Currently RN SOC bounding box update assumes we will get at least
2 clock states from SMU. This isn't always true and because of special
casing on first clock state we end up with low disp, dpp, dsc and phy
clocks.
This change removes the special casing allowing the first state to
acquire correct clocks.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Check before programming the register since it isn't present on
all IPs using this code.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Pull rdma fixes from Jason Gunthorpe:
"A couple of regressions were found in rc1, as well as another set of
races and bugs:
- A regression where RDMA_CM_EVENT_REJECTED was lost in some cases
- Bad error handling in the CM, uverbs, rvt, siw and i40iw
- Kernel stack memory leak to user space in mlx4
- Missing data in a uapi query for mlx5
- Three races found by syzkaller in the ib core code"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/core: Fix race between destroy and release FD object
IB/rdmavt: Always return ERR_PTR from rvt_create_mmap_info()
RDMA/core: Fix overwriting of uobj in case of error
RDMA/core: Prevent mixed use of FDs between shared ufiles
RDMA/uverbs: Fix a race with disassociate and exit_mmap()
RDMA/mlx5: Set GRH fields in query QP on RoCE
RDMA/siw: Fix potential siw_mem refcnt leak in siw_fastreg_mr()
RDMA/mlx4: Initialize ib_spec on the stack
RDMA/cm: Fix an error check in cm_alloc_id_priv()
RDMA/cm: Fix missing RDMA_CM_EVENT_REJECTED event after receiving REJ message
i40iw: fix null pointer dereference on a null wqe pointer
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git://git.linux-nfs.org/projects/anna/linux-nfs
NFSoRDMA Client Fixes for Linux 5.7
Bugfixes:
- Restore wake-up-all to rpcrdma_cm_event_handler()
- Otherwise the client won't respond to server disconnect requests
- Fix tracepoint use-after-free race
- Fix usage of xdr_stream_encode_item_{present, absent}
- These functions return a size on success, and not 0
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
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Currently, if the client sends BIND_CONN_TO_SESSION with
NFS4_CDFC4_FORE_OR_BOTH but only gets NFS4_CDFS4_FORE back it ignores
that it wasn't able to enable a backchannel.
To make sure, the client sends BIND_CONN_TO_SESSION as the first
operation on the connections (ie., no other session compounds haven't
been sent before), and if the client's request to bind the backchannel
is not satisfied, then reset the connection and retry.
Cc: stable@vger.kernel.org
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
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The rpciod workqueue is on the write-out path for freeing dirty memory,
so it is important that it never block waiting for memory to be
allocated - this can lead to a deadlock.
rpc_execute() - which is often called by an rpciod work item - calls
rcp_task_release_client() which can lead to rpc_free_client().
rpc_free_client() makes two calls which could potentially block wating
for memory allocation.
rpc_clnt_debugfs_unregister() calls into debugfs and will block while
any of the debugfs files are being accessed. In particular it can block
while any of the 'open' methods are being called and all of these use
malloc for one thing or another. So this can deadlock if the memory
allocation waits for NFS to complete some writes via rpciod.
rpc_clnt_remove_pipedir() can take the inode_lock() and while it isn't
obvious that memory allocations can happen while the lock it held, it is
safer to assume they might and to not let rpciod call
rpc_clnt_remove_pipedir().
So this patch moves these two calls (together with the final kfree() and
rpciod_down()) into a work-item to be run from the system work-queue.
rpciod can continue its important work, and the final stages of the free
can happen whenever they happen.
I have seen this deadlock on a 4.12 based kernel where debugfs used
synchronize_srcu() when removing objects. synchronize_srcu() requires a
workqueue and there were no free workther threads and none could be
allocated. While debugsfs no longer uses SRCU, I believe the deadlock
is still possible.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
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This fixes GPU hangs due to cache coherency issues.
Bump the driver version. Split out from the original patch.
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This fixes GPU hangs due to cache coherency issues.
v2: Split the version bump to a separate patch
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Tested-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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DCC_INDEPENDENT_128B is needed for displayble DCC on gfx10.
SCANOUT is not needed by the kernel, but Mesa uses it.
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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hwmgr->pm_en is initialized at hwmgr_hw_init.
during amdgpu_device_init, there is amdgpu_asic_reset that calls to
soc15_asic_reset (for V320 usecase, Vega10 asic), in which:
1) soc15_asic_reset_method calls to pp_get_asic_baco_capability (pm_en)
2) soc15_asic_baco_reset calls to pp_set_asic_baco_state (pm_en)
pm_en is used in the above two cases while it has not yet been initialized
So avoid using pm_en in the above two functions for V320 passthrough.
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Tiecheng Zhou <Tiecheng.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This reverts commit c5207876232649ca5e5ddd6f966d2da75ffded8f.
The commit being reverted changed the wrong place, it should have
changed in func get_asic_baco_capability.
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Tiecheng Zhou <Tiecheng.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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If we do
% echo 1 > /sys/module/dmatest/parameters/run
[ 115.851124] dmatest: Could not start test, no channels configured
% echo dma8chan7 > /sys/module/dmatest/parameters/channel
[ 127.563872] dmatest: Added 1 threads using dma8chan7
% cat /sys/module/dmatest/parameters/wait
... !!! HANG !!! ...
The culprit is the commit 6138f967bccc
("dmaengine: dmatest: Use fixed point div to calculate iops")
which makes threads not to run, but pending and being kicked off by writing
to the 'run' node. However, it forgot to consider 'wait' routine to avoid
above mentioned case.
In order to fix this, check for really running threads, i.e. with pending
and done flags unset.
It's pity the culprit commit hadn't updated documentation and tested all
possible scenarios.
Fixes: 6138f967bccc ("dmaengine: dmatest: Use fixed point div to calculate iops")
Cc: Seraj Alijan <seraj.alijan@sondrel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200428113518.70620-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Pull s390 fix from Christian Borntraeger:
"Fix a race between page table upgrade and uaccess on s390.
This fixes CVE-2020-11884 which allows for a local kernel crash or
code execution"
* tag 'cve-2020-11884' from emailed bundle:
s390/mm: fix page table upgrade vs 2ndary address mode accesses
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A race exists between build_pcms() and build_controls() phases of codec
setup. Build_pcms() sets up notifier for jack events. If a monitor event
is received before build_controls() is run, the initial jack state is
lost and never reported via mixer controls.
The problem can be hit at least with SOF as the controller driver. SOF
calls snd_hda_codec_build_controls() in its workqueue-based probe and
this can be delayed enough to hit the race condition.
Fix the issue by invalidating the per-pin ELD information when
build_controls() is called. The existing call to hdmi_present_sense()
will update the ELD contents. This ensures initial monitor state is
correctly reflected via mixer controls.
BugLink: https://github.com/thesofproject/linux/issues/1687
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20200428123836.24512-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This reverts commit a900aeac253729411cf33c6cb598c152e9e4137f because
regressions were showing up.
Suggested-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/dmaengine/20200319201140.17451-1-digetx@gmail.com/
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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This reverts commit 8814044fe0fa182abc9ff818d3da562de98bc9a7 because
regressions were showing up.
Suggested-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/dmaengine/20200319201140.17451-1-digetx@gmail.com/
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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When slave status is I2C_SLAVE_RX_END, generate I2C_SLAVE_STOP
event to i2c_client.
Fixes: c245d94ed106 ("i2c: iproc: Add multi byte read-write support for slave mode")
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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Cc: stable@vger.kernel.org
Fixes: 8002db6336dd ("qxl: convert qxl driver to proper use for reservations")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Link: http://patchwork.freedesktop.org/patch/msgid/2e5a13ae-9ab2-5401-aa4d-03d5f5593423@virtuozzo.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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ret should be changed to release allocated struct qxl_release
Cc: stable@vger.kernel.org
Fixes: 8002db6336dd ("qxl: convert qxl driver to proper use for reservations")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Link: http://patchwork.freedesktop.org/patch/msgid/22cfd55f-07c8-95d0-a2f7-191b7153c3d4@virtuozzo.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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This can happen if userspace doesn't issue any 3D ioctls before
closing the DRM fd.
Fixes: 72b48ae800da ("drm/virtio: enqueue virtio_gpu_create_context after the first 3D ioctl")
Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20200408232938.55816-1-gurchetansingh@chromium.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Fix to return negative error code -ENOMEM from the error handling
case instead of 0, as done elsewhere in this function.
Fixes: 60abd3181db2 ("selinux: convert cond_list to array")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
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tcp_bpf_recvmsg() invokes sk_psock_get(), which returns a reference of
the specified sk_psock object to "psock" with increased refcnt.
When tcp_bpf_recvmsg() returns, local variable "psock" becomes invalid,
so the refcount should be decreased to keep refcount balanced.
The reference counting issue happens in several exception handling paths
of tcp_bpf_recvmsg(). When those error scenarios occur such as "flags"
includes MSG_ERRQUEUE, the function forgets to decrease the refcnt
increased by sk_psock_get(), causing a refcnt leak.
Fix this issue by calling sk_psock_put() or pulling up the error queue
read handling when those error scenarios occur.
Fixes: e7a5f1f1cd000 ("bpf/sockmap: Read psock ingress_msg before sk_receive_queue")
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/1587872115-42805-1-git-send-email-xiyuyang19@fudan.edu.cn
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- regression fixes:
- transaction leak when deleting unused block group
- log cleanup after transaction abort
- fix block group leak when removing fails
- transaction leak if relocation recovery fails
- fix SPDX header
* tag 'for-5.7-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix transaction leak in btrfs_recover_relocation
btrfs: fix block group leak when removing fails
btrfs: drop logs when we've aborted a transaction
btrfs: fix memory leak of transaction when deleting unused block group
btrfs: discard: Use the correct style for SPDX License Identifier
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V fixes from Wei Liu:
- Two patches from Dexuan fixing suspension bugs
- Three cleanup patches from Andy and Michael
* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
hyper-v: Remove internal types from UAPI header
hyper-v: Use UUID API for exporting the GUID
x86/hyperv: Suspend/resume the VP assist page for hibernation
Drivers: hv: Move AEOI determination to architecture dependent code
Drivers: hv: vmbus: Fix Suspend-to-Idle for Generation-2 VM
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Simon Wunderlich says:
====================
Here are some batman-adv bugfixes:
- fix random number generation in network coding, by George Spelvin
- fix reference counter leaks, by Xiyu Yang (3 patches)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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A call to 'dma_alloc_coherent()' is hidden in 'sonic_alloc_descriptors()',
called from 'sonic_probe1()'.
This is correctly freed in the remove function, but not in the error
handling path of the probe function.
Fix it and add the missing 'dma_free_coherent()' call.
While at it, rename a label in order to be slightly more informative.
Fixes: efcce839360f ("[PATCH] macsonic/jazzsonic network drivers update")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 3c1bcc8614db ("net: ethernet: Convert phydev advertize and
supported from u32 to link mode") updated ethernet drivers to use a
linkmode bitmap. It mistakenly dropped a bitwise negation in the
tc35815 ethernet driver on a bitmask to set the supported/advertising
flags.
Found by Anthony via code inspection, not tested as I do not have the
required hardware.
Fixes: 3c1bcc8614db ("net: ethernet: Convert phydev advertize and supported from u32 to link mode")
Signed-off-by: Anthony Felice <tony.felice@timesys.com>
Reviewed-by: Akshay Bhat <akshay.bhat@timesys.com>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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syzbot managed to set up sfq so that q->scaled_quantum was zero,
triggering an infinite loop in sfq_dequeue()
More generally, we must only accept quantum between 1 and 2^18 - 7,
meaning scaled_quantum must be in [1, 0x7FFF] range.
Otherwise, we also could have a loop in sfq_dequeue()
if scaled_quantum happens to be 0x8000, since slot->allot
could indefinitely switch between 0 and 0x8000.
Fixes: eeaeb068f139 ("sch_sfq: allow big packets and be fair")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot+0251e883fe39e7a0cb0a@syzkaller.appspotmail.com
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Michael Chan says:
====================
bnxt_en: Bug fixes.
A collection of 5 miscellaneous bug fixes covering VF anti-spoof setup
issues, devlink MSIX max value, AER, context memory allocation error
path, and VLAN acceleration logic.
Please queue for -stable. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current logic in bnxt_fix_features() will inadvertently turn on both
CTAG and STAG VLAN offload if the user tries to disable both. Fix it
by checking that the user is trying to enable CTAG or STAG before
enabling both. The logic is supposed to enable or disable both CTAG and
STAG together.
Fixes: 5a9f6b238e59 ("bnxt_en: Enable and disable RX CTAG and RX STAG VLAN acceleration together.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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bnxt_alloc_ctx_pg_tbls() should return error when the memory size of the
context memory to set up is zero. By returning success (0), the caller
may proceed normally and may crash later when it tries to set up the
memory.
Fixes: 08fe9d181606 ("bnxt_en: Add Level 2 context memory paging support.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Improve the slot reset sequence by disabling the device to prevent bad
DMAs if slot reset fails. Return the proper result instead of always
PCI_ERS_RESULT_RECOVERED to the caller.
Fixes: 6316ea6db93d ("bnxt_en: Enable AER support.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Broadcom adapters support only maximum of 512 CQs per PF. If user sets
MSIx vectors more than supported CQs, firmware is setting incorrect value
for msix_vec_per_pf_max parameter. Fix it by reducing the BNXT_MSIX_VEC_MAX
value to 512, even though the maximum # of MSIx vectors supported by adapter
are 1280.
Fixes: f399e8497826 ("bnxt_en: Use msix_vec_per_pf_max and msix_vec_per_pf_min devlink params.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix the logic that sets the enable/disable flag for the source MAC
filter according to firmware spec 1.7.1.
In the original firmware spec. before 1.7.1, the VF spoof check flags
were not latched after making the HWRM_FUNC_CFG call, so there was a
need to keep the func_flags so that subsequent calls would perserve
the VF spoof check setting. A change was made in the 1.7.1 spec
so that the flags became latched. So we now set or clear the anti-
spoof setting directly without retrieving the old settings in the
stored vf->func_flags which are no longer valid. We also remove the
unneeded vf->func_flags.
Fixes: 8eb992e876a8 ("bnxt_en: Update firmware interface spec to 1.7.6.2.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Read the temperature sensor register from the correct location for the
88E2110 PHY. There is no enable/disable bit on 2110, so make
mv3310_hwmon_config() run on 88X3310 only.
Fixes: 62d01535474b61 ("net: phy: marvell10g: add support for the 88x2110 PHY")
Cc: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If choke_init() could not allocate q->tab, we would crash later
in choke_reset().
BUG: KASAN: null-ptr-deref in memset include/linux/string.h:366 [inline]
BUG: KASAN: null-ptr-deref in choke_reset+0x208/0x340 net/sched/sch_choke.c:326
Write of size 8 at addr 0000000000000000 by task syz-executor822/7022
CPU: 1 PID: 7022 Comm: syz-executor822 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x188/0x20d lib/dump_stack.c:118
__kasan_report.cold+0x5/0x4d mm/kasan/report.c:515
kasan_report+0x33/0x50 mm/kasan/common.c:625
check_memory_region_inline mm/kasan/generic.c:187 [inline]
check_memory_region+0x141/0x190 mm/kasan/generic.c:193
memset+0x20/0x40 mm/kasan/common.c:85
memset include/linux/string.h:366 [inline]
choke_reset+0x208/0x340 net/sched/sch_choke.c:326
qdisc_reset+0x6b/0x520 net/sched/sch_generic.c:910
dev_deactivate_queue.constprop.0+0x13c/0x240 net/sched/sch_generic.c:1138
netdev_for_each_tx_queue include/linux/netdevice.h:2197 [inline]
dev_deactivate_many+0xe2/0xba0 net/sched/sch_generic.c:1195
dev_deactivate+0xf8/0x1c0 net/sched/sch_generic.c:1233
qdisc_graft+0xd25/0x1120 net/sched/sch_api.c:1051
tc_modify_qdisc+0xbab/0x1a00 net/sched/sch_api.c:1670
rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5454
netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2469
netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329
netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x6bf/0x7e0 net/socket.c:2362
___sys_sendmsg+0x100/0x170 net/socket.c:2416
__sys_sendmsg+0xec/0x1b0 net/socket.c:2449
do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
Fixes: 77e62da6e60c ("sch_choke: drop all packets in queue during reset")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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My intent was to not let users set a zero drop_batch_size,
it seems I once again messed with min()/max().
Fixes: 9d18562a2278 ("fq_codel: add batch ability to fq_codel_drop()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tls_data_ready() invokes sk_psock_get(), which returns a reference of
the specified sk_psock object to "psock" with increased refcnt.
When tls_data_ready() returns, local variable "psock" becomes invalid,
so the refcount should be decreased to keep refcount balanced.
The reference counting issue happens in one exception handling path of
tls_data_ready(). When "psock->ingress_msg" is empty but "psock" is not
NULL, the function forgets to decrease the refcnt increased by
sk_psock_get(), causing a refcnt leak.
Fix this issue by calling sk_psock_put() on all paths when "psock" is
not NULL.
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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x25_connect() invokes x25_get_neigh(), which returns a reference of the
specified x25_neigh object to "x25->neighbour" with increased refcnt.
When x25 connect success and returns, the reference still be hold by
"x25->neighbour", so the refcount should be decreased in
x25_disconnect() to keep refcount balanced.
The reference counting issue happens in x25_disconnect(), which forgets
to decrease the refcnt increased by x25_get_neigh() in x25_connect(),
causing a refcnt leak.
Fix this issue by calling x25_neigh_put() before x25_disconnect()
returns.
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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