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[X25]: fix for spinlock recurse and spinlock lockup with timer handler 

When the sk_timer function x25_heartbeat_expiry() is called by the
kernel in a running/terminating process, spinlock-recursion and
spinlock-lockup locks up the kernel.  This has happened with testing
on some distro's and the patch below fixed it.

Signed-off-by: Shaun Pereira <spereira@tusc.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shaun Pereira 2006-04-28 12:00:17 -07:00 committed by David S. Miller
parent e0a515bc6a
commit 43dff98b02
1 changed files with 2 additions and 2 deletions
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4
net/x25/x25_timer.c
View File

@ -114,8 +114,9 @@ static void x25_heartbeat_expiry(unsigned long param)
if (sock_flag(sk, SOCK_DESTROY) ||
(sk->sk_state == TCP_LISTEN &&
sock_flag(sk, SOCK_DEAD))) {
bh_unlock_sock(sk);
x25_destroy_socket(sk);
goto unlock;
return;
}
break;
@ -128,7 +129,6 @@ static void x25_heartbeat_expiry(unsigned long param)
}
restart_heartbeat:
x25_start_heartbeat(sk);
unlock:
bh_unlock_sock(sk);
}