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 |
|---|---|---|
| hvc | ||
| ipwireless | ||
| serdev | ||
| serial | ||
| vt | ||
| Kconfig | -rw-r--r-- | 17.6 KB |
| Makefile | -rw-r--r-- | 1.3 KB |
| amiserial.c | -rw-r--r-- | 41.8 KB |
| cyclades.c | -rw-r--r-- | 108.9 KB |
| ehv_bytechan.c | -rw-r--r-- | 21.7 KB |
| goldfish.c | -rw-r--r-- | 11.9 KB |
| isicom.c | -rw-r--r-- | 40.4 KB |
| mips_ejtag_fdc.c | -rw-r--r-- | 35.2 KB |
| moxa.c | -rw-r--r-- | 52.1 KB |
| moxa.h | -rw-r--r-- | 8.5 KB |
| mxser.c | -rw-r--r-- | 70.1 KB |
| mxser.h | -rw-r--r-- | 4.5 KB |
| n_gsm.c | -rw-r--r-- | 79.1 KB |
| n_hdlc.c | -rw-r--r-- | 22.0 KB |
| n_null.c | -rw-r--r-- | 1.3 KB |
| n_r3964.c | -rw-r--r-- | 31.2 KB |
| n_tracerouter.c | -rw-r--r-- | 6.6 KB |
| n_tracesink.c | -rw-r--r-- | 6.6 KB |
| n_tracesink.h | -rw-r--r-- | 853 bytes |
| n_tty.c | -rw-r--r-- | 61.6 KB |
| nozomi.c | -rw-r--r-- | 46.5 KB |
| pty.c | -rw-r--r-- | 24.5 KB |
| rocket.c | -rw-r--r-- | 92.2 KB |
| rocket.h | -rw-r--r-- | 3.8 KB |
| rocket_int.h | -rw-r--r-- | 41.6 KB |
| synclink.c | -rw-r--r-- | 222.8 KB |
| synclink_gt.c | -rw-r--r-- | 130.9 KB |
| synclinkmp.c | -rw-r--r-- | 146.1 KB |
| sysrq.c | -rw-r--r-- | 26.7 KB |
| tty_audit.c | -rw-r--r-- | 5.6 KB |
| tty_baudrate.c | -rw-r--r-- | 6.5 KB |
| tty_buffer.c | -rw-r--r-- | 16.2 KB |
| tty_io.c | -rw-r--r-- | 85.0 KB |
| tty_ioctl.c | -rw-r--r-- | 23.7 KB |
| tty_jobctrl.c | -rw-r--r-- | 14.0 KB |
| tty_ldisc.c | -rw-r--r-- | 20.9 KB |
| tty_ldsem.c | -rw-r--r-- | 10.5 KB |
| tty_mutex.c | -rw-r--r-- | 1.1 KB |
| tty_port.c | -rw-r--r-- | 18.2 KB |
| ttynull.c | -rw-r--r-- | 2.3 KB |
| vcc.c | -rw-r--r-- | 23.3 KB |
Computing file changes ...
