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authorCong Wang <xiyou.wangcong@gmail.com>2019-01-05 23:45:26 -0800
committerDavid S. Miller <davem@davemloft.net>2019-01-07 14:40:27 -0500
commit26d92e951fe0a44ee4aec157cabb65a818cc8151 (patch)
treee0233475d3922cc26be5157b077f62b5b31e2031 /net/ipv6
parent7acf8b36a2ac6eb4fdc53c4d862570089e56c69e (diff)
downloadlinux-stericsson-26d92e951fe0a44ee4aec157cabb65a818cc8151.tar.gz
smc: move unhash as early as possible in smc_release()
In smc_release() we release smc->clcsock before unhash the smc sock, but a parallel smc_diag_dump() may be still reading smc->clcsock, therefore this could cause a use-after-free as reported by syzbot. Reported-and-tested-by: syzbot+fbd1e5476e4c94c7b34e@syzkaller.appspotmail.com Fixes: 51f1de79ad8e ("net/smc: replace sock_put worker by socket refcounting") Cc: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Reported-by: syzbot+0bf2e01269f1274b4b03@syzkaller.appspotmail.com Reported-by: syzbot+e3132895630f957306bc@syzkaller.appspotmail.com Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
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