Revision c9a82bec02c339cdda99b37c5e62b3b71fc4209c authored by Vlad Buslov on 12 June 2023, 09:34:26 UTC, committed by Jakub Kicinski on 15 June 2023, 06:03:16 UTC
Mingshuai Ren reports:
When a new chain is added by using tc, one soft lockup alarm will be
generated after delete the prio 0 filter of the chain. To reproduce
the problem, perform the following steps:
(1) tc qdisc add dev eth0 root handle 1: htb default 1
(2) tc chain add dev eth0
(3) tc filter del dev eth0 chain 0 parent 1: prio 0
(4) tc filter add dev eth0 chain 0 parent 1:
Fix the issue by accounting for additional reference to chains that are
explicitly created by RTM_NEWCHAIN message as opposed to implicitly by
RTM_NEWTFILTER message.
Fixes: 726d061286ce ("net: sched: prevent insertion of new classifiers during chain flush")
Reported-by: Mingshuai Ren <renmingshuai@huawei.com>
Closes: https://lore.kernel.org/lkml/87legswvi3.fsf@nvidia.com/T/
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Link: https://lore.kernel.org/r/20230612093426.2867183-1-vladbu@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
1 parent 24b454b
| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 394 bytes |
| decode-fcp.c | -rw-r--r-- | 5.5 KB |
| list.h | -rw-r--r-- | 1.3 KB |
| nosy-dump.c | -rw-r--r-- | 24.5 KB |
| nosy-dump.h | -rw-r--r-- | 3.2 KB |
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