projects / linux-2.6-block.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: e3a9f61) | patch
net: avoid weird emergency message
authorEric Dumazet <edumazet@google.com>
Thu, 16 May 2019 15:09:57 +0000 (08:09 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 16 May 2019 21:25:58 +0000 (14:25 -0700)
commitd7c04b05c9ca14c55309eb139430283a45c4c25f
tree430f3db330f5830a4ccbfb0747d605b2c9ca43fatree | snapshot
parente3a9f61b7ec3fd49227c3558d5ea897b75212871commit | diff
net: avoid weird emergency message

When host is under high stress, it is very possible thread
running netdev_wait_allrefs() returns from msleep(250)
10 seconds late.

This leads to these messages in the syslog :

[...] unregister_netdevice: waiting for syz_tun to become free. Usage count = 0

If the device refcount is zero, the wait is over.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/core/dev.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)