https://github.com/torvalds/linux
Revision cf1b2326b734896734c6e167e41766f9cee7686a authored by Mike Christie on 17 October 2019, 21:27:34 UTC, committed by Jens Axboe on 25 October 2019, 20:37:21 UTC
nbd requires socket families to support the shutdown method so the nbd
recv workqueue can be woken up from its sock_recvmsg call. If the socket
does not support the callout we will leave recv works running or get hangs
later when the device or module is removed.

This adds a check during socket connection/reconnection to make sure the
socket being passed in supports the needed callout.

Reported-by: syzbot+24c12fa8d218ed26011a@syzkaller.appspotmail.com
Fixes: e9e006f5fcf2 ("nbd: fix max number of supported devs")
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 parent 962399b
History
Tip revision: cf1b2326b734896734c6e167e41766f9cee7686a authored by Mike Christie on 17 October 2019, 21:27:34 UTC
nbd: verify socket is supported during setup
Tip revision: cf1b232
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.clang-format -rw-r--r-- 15.0 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 30 bytes
.gitignore -rw-r--r-- 1.7 KB
.mailmap -rw-r--r-- 13.1 KB
COPYING -rw-r--r-- 423 bytes
CREDITS -rw-r--r-- 97.2 KB
Kbuild -rw-r--r-- 1.3 KB
Kconfig -rw-r--r-- 595 bytes
MAINTAINERS -rw-r--r-- 516.7 KB
Makefile -rw-r--r-- 59.4 KB
README -rw-r--r-- 727 bytes

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