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authorDave Jones <davej@redhat.com>2013-06-28 12:13:52 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-07-28 16:29:45 -0700
commitea4c218f2c3e67f1bca8078ff1f80d7e0c2ab791 (patch)
treee32540185bddd3512ed45d5aa3f81de5674d9cd5 /net
parentac294f13d331cb3e315fd922ae505619f853818b (diff)
downloadvexpress-lsk-ea4c218f2c3e67f1bca8078ff1f80d7e0c2ab791.tar.gz
x25: Fix broken locking in ioctl error paths.
[ Upstream commit 4ccb93ce7439b63c31bc7597bfffd13567fa483d ] Two of the x25 ioctl cases have error paths that break out of the function without unlocking the socket, leading to this warning: ================================================ [ BUG: lock held when returning to user space! ] 3.10.0-rc7+ #36 Not tainted ------------------------------------------------ trinity-child2/31407 is leaving the kernel with locks still held! 1 lock held by trinity-child2/31407: #0: (sk_lock-AF_X25){+.+.+.}, at: [<ffffffffa024b6da>] x25_ioctl+0x8a/0x740 [x25] Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-rw-r--r--net/x25/af_x25.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 37ca9694aab..22c88d2e684 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1583,11 +1583,11 @@ out_cud_release:
case SIOCX25CALLACCPTAPPRV: {
rc = -EINVAL;
lock_sock(sk);
- if (sk->sk_state != TCP_CLOSE)
- break;
- clear_bit(X25_ACCPT_APPRV_FLAG, &x25->flags);
+ if (sk->sk_state == TCP_CLOSE) {
+ clear_bit(X25_ACCPT_APPRV_FLAG, &x25->flags);
+ rc = 0;
+ }
release_sock(sk);
- rc = 0;
break;
}
@@ -1595,14 +1595,15 @@ out_cud_release:
rc = -EINVAL;
lock_sock(sk);
if (sk->sk_state != TCP_ESTABLISHED)
- break;
+ goto out_sendcallaccpt_release;
/* must call accptapprv above */
if (test_bit(X25_ACCPT_APPRV_FLAG, &x25->flags))
- break;
+ goto out_sendcallaccpt_release;
x25_write_internal(sk, X25_CALL_ACCEPTED);
x25->state = X25_STATE_3;
- release_sock(sk);
rc = 0;
+out_sendcallaccpt_release:
+ release_sock(sk);
break;
}