Revision 580e4273d7a883ececfefa692c1f96bdbacb99b5 authored by Cong Wang on 02 October 2020, 19:13:34 UTC, committed by David S. Miller on 04 October 2020, 21:53:06 UTC
Although we take RTNL on dump path, it is possible to skip RTNL on insertion path. So the following race condition is possible: rtnl_lock() // no rtnl lock mutex_lock(&idrinfo->lock); // insert ERR_PTR(-EBUSY) mutex_unlock(&idrinfo->lock); tc_dump_action() rtnl_unlock() So we have to skip those temporary -EBUSY entries on dump path too. Reported-and-tested-by: syzbot+b47bc4f247856fb4d9e1@syzkaller.appspotmail.com Fixes: 0fedc63fadf0 ("net_sched: commit action insertions together") Cc: Vlad Buslov <vladbu@mellanox.com> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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File | Mode | Size |
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Kconfig | -rw-r--r-- | 75.2 KB |
Makefile | -rw-r--r-- | 1.2 KB |
calibrate.c | -rw-r--r-- | 8.6 KB |
do_mounts.c | -rw-r--r-- | 14.8 KB |
do_mounts.h | -rw-r--r-- | 908 bytes |
do_mounts_initrd.c | -rw-r--r-- | 3.4 KB |
do_mounts_rd.c | -rw-r--r-- | 7.7 KB |
init_task.c | -rw-r--r-- | 6.0 KB |
initramfs.c | -rw-r--r-- | 13.9 KB |
main.c | -rw-r--r-- | 37.0 KB |
noinitramfs.c | -rw-r--r-- | 813 bytes |
version.c | -rw-r--r-- | 1.3 KB |
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