net/smc: keep clcsock reference in smc_tcp_listen_work()
The internal CLC socket should exist till the SMC-socket is released. Function tcp_listen_worker() releases the internal CLC socket of a listen socket, if an smc_close_active() is called. This function is called for the final release(), but it is called for shutdown SHUT_RDWR as well. This opens a door for protection faults, if socket calls using the internal CLC socket are called for a shutdown listen socket. With the changes of commit 3d502067 ("net/smc: simplify wait when closing listen socket") there is no need anymore to release the internal CLC socket in function tcp_listen_worker((). It is sufficient to release it in smc_release(). Fixes: 127f4970 ("net/smc: release clcsock from tcp_listen_worker") Signed-off-by:Ursula Braun <ubraun@linux.ibm.com> Reported-by:
<syzbot+9045fc589fcd196ef522@syzkaller.appspotmail.com> Reported-by:
<syzbot+28a2c86cf19c81d871fa@syzkaller.appspotmail.com> Reported-by:
<syzbot+9605e6cace1b5efd4a0a@syzkaller.appspotmail.com> Reported-by:
<syzbot+cf9012c597c8379d535c@syzkaller.appspotmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
02a6efca
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