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>
1 parent 9a9e774
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 7.4 KB |
| Makefile | -rw-r--r-- | 727 bytes |
| bcm47xxsflash.c | -rw-r--r-- | 9.6 KB |
| bcm47xxsflash.h | -rw-r--r-- | 2.5 KB |
| block2mtd.c | -rw-r--r-- | 10.9 KB |
| docg3.c | -rw-r--r-- | 56.0 KB |
| docg3.h | -rw-r--r-- | 9.2 KB |
| lart.c | -rw-r--r-- | 18.2 KB |
| mchp23k256.c | -rw-r--r-- | 5.5 KB |
| ms02-nv.c | -rw-r--r-- | 7.0 KB |
| ms02-nv.h | -rw-r--r-- | 3.7 KB |
| mtd_dataflash.c | -rw-r--r-- | 24.2 KB |
| mtdram.c | -rw-r--r-- | 4.2 KB |
| phram.c | -rw-r--r-- | 6.4 KB |
| pmc551.c | -rw-r--r-- | 25.0 KB |
| powernv_flash.c | -rw-r--r-- | 7.1 KB |
| serial_flash_cmds.h | -rw-r--r-- | 1.6 KB |
| slram.c | -rw-r--r-- | 8.5 KB |
| spear_smi.c | -rw-r--r-- | 29.7 KB |
| sst25l.c | -rw-r--r-- | 9.4 KB |
| st_spi_fsm.c | -rw-r--r-- | 57.9 KB |
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