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| author | Eric Dumazet <[email protected]> | 2024-08-05 08:58:21 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2024-08-06 19:12:53 +0000 |
| commit | 3e7917c0cdad835a5121520fc5686d954b7a61ab (patch) | |
| tree | d1a301f01ae219e3a3cbfe87a117a112df37d7a2 /drivers/net/dsa/microchip/ksz_common.c | |
| parent | net: bridge: mcast: wait for previous gc cycles when removing port (diff) | |
| download | kernel-3e7917c0cdad835a5121520fc5686d954b7a61ab.tar.gz kernel-3e7917c0cdad835a5121520fc5686d954b7a61ab.zip | |
net: linkwatch: use system_unbound_wq
linkwatch_event() grabs possibly very contended RTNL mutex.
system_wq is not suitable for such work.
Inspired by many noisy syzbot reports.
3 locks held by kworker/0:7/5266:
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015480948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90003f6fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa6f208 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
Reported-by: syzbot <[email protected]>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <[email protected]>
Reviewed-by: Kuniyuki Iwashima <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'drivers/net/dsa/microchip/ksz_common.c')
0 files changed, 0 insertions, 0 deletions