* [MPTCP] Re: general protection fault in selinux_socket_recvmsg
@ 2020-05-24 18:12 syzbot
0 siblings, 0 replies; 3+ messages in thread
From: syzbot @ 2020-05-24 18:12 UTC (permalink / raw
To: mptcp
[-- Attachment #1: Type: text/plain, Size: 1064 bytes --]
syzbot has bisected this bug to:
commit 263e1201a2c324b60b15ecda5de9ebf1e7293e31
Author: Paolo Abeni <pabeni(a)redhat.com>
Date: Thu Apr 30 13:01:51 2020 +0000
mptcp: consolidate synack processing.
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12a5254a100000
start commit: 051143e1 Merge tag 'apparmor-pr-2020-05-21' of git://git.k..
git tree: upstream
final crash: https://syzkaller.appspot.com/x/report.txt?x=11a5254a100000
console output: https://syzkaller.appspot.com/x/log.txt?x=16a5254a100000
kernel config: https://syzkaller.appspot.com/x/.config?x=b3368ce0cc5f5ace
dashboard link: https://syzkaller.appspot.com/bug?extid=c6bfc3db991edc918432
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13eeacba100000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167163e6100000
Reported-by: syzbot+c6bfc3db991edc918432(a)syzkaller.appspotmail.com
Fixes: 263e1201a2c3 ("mptcp: consolidate synack processing.")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
^ permalink raw reply [flat|nested] 3+ messages in thread
* [MPTCP] Re: general protection fault in selinux_socket_recvmsg
@ 2020-05-25 8:58 Paolo Abeni
0 siblings, 0 replies; 3+ messages in thread
From: Paolo Abeni @ 2020-05-25 8:58 UTC (permalink / raw
To: mptcp
[-- Attachment #1: Type: text/plain, Size: 551 bytes --]
#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git master
---
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 1f52a0fa31ed..69b66423305b 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -954,7 +954,8 @@ static int mptcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
pr_debug("block timeout %ld", timeo);
mptcp_wait_data(sk, &timeo);
- if (unlikely(__mptcp_tcp_fallback(msk)))
+ ssock = __mptcp_tcp_fallback(msk);
+ if (unlikely(ssock))
goto fallback;
}
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [MPTCP] Re: general protection fault in selinux_socket_recvmsg
@ 2020-05-25 10:38 syzbot
0 siblings, 0 replies; 3+ messages in thread
From: syzbot @ 2020-05-25 10:38 UTC (permalink / raw
To: mptcp
[-- Attachment #1: Type: text/plain, Size: 635 bytes --]
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger crash:
Reported-and-tested-by: syzbot+c6bfc3db991edc918432(a)syzkaller.appspotmail.com
Tested on:
commit: 98790bba Merge tag 'efi-urgent-2020-05-24' of git://git.ke..
git tree: net
kernel config: https://syzkaller.appspot.com/x/.config?x=b3368ce0cc5f5ace
dashboard link: https://syzkaller.appspot.com/bug?extid=c6bfc3db991edc918432
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
patch: https://syzkaller.appspot.com/x/patch.diff?x=127e6016100000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-05-25 10:38 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-05-25 8:58 [MPTCP] Re: general protection fault in selinux_socket_recvmsg Paolo Abeni
-- strict thread matches above, loose matches on Subject: below --
2020-05-25 10:38 syzbot
2020-05-24 18:12 syzbot
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.