From: syzbot <syzbot+5f1a04e374a635efc426@syzkaller.appspotmail.com>
To: davem@davemloft.net, ebiggers@google.com, edumazet@google.com,
ktkhai@virtuozzo.com, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com,
tom@quantonium.net, viro@ZenIV.linux.org.uk
Subject: WARNING in kcm_exit_net (3)
Date: Thu, 31 May 2018 01:16:02 -0700 [thread overview]
Message-ID: <00000000000000dca5056d7c1442@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: d60d61f36b8f Merge branch 'for-linus' of git://git.kernel...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=101bb52f800000
kernel config: https://syzkaller.appspot.com/x/.config?x=968b0b23c7854c0b
dashboard link: https://syzkaller.appspot.com/bug?extid=5f1a04e374a635efc426
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=13b9ed2f800000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5f1a04e374a635efc426@syzkaller.appspotmail.com
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
WARNING: CPU: 0 PID: 6 at net/kcm/kcmsock.c:2023 kcm_exit_net+0x392/0x3e0
net/kcm/kcmsock.c:2023
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 6 Comm: kworker/u4:0 Not tainted 4.17.0-rc7+ #75
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1b9/0x294 lib/dump_stack.c:113
panic+0x22f/0x4de kernel/panic.c:184
__warn.cold.8+0x163/0x1b3 kernel/panic.c:536
report_bug+0x252/0x2d0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:178 [inline]
do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:kcm_exit_net+0x392/0x3e0 net/kcm/kcmsock.c:2023
RSP: 0018:ffff8801d9a97430 EFLAGS: 00010293
RAX: ffff8801d9a88180 RBX: 1ffff1003b352e86 RCX: 1ffff1003b351135
RDX: 0000000000000000 RSI: ffffffff86d56942 RDI: 0000000000000286
RBP: ffff8801d9a974f8 R08: 1ffff1003b352e67 R09: ffffed003b5c46d2
R10: 0000000000000003 R11: 0000000000000003 R12: 1ffff1003b352e8a
R13: ffff8801d9a974d0 R14: ffff8801d96763d0 R15: ffff8801c51d0e00
ops_exit_list.isra.7+0xb0/0x160 net/core/net_namespace.c:152
cleanup_net+0x51d/0xb20 net/core/net_namespace.c:523
process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145
worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279
kthread+0x345/0x410 kernel/kthread.c:240
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
Dumping ftrace buffer:
(ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
syzbot.
syzbot can test patches for this bug, for details see:
https://goo.gl/tpsmEJ#testing-patches
next reply other threads:[~2018-05-31 8:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-31 8:16 syzbot [this message]
2018-05-31 9:58 ` WARNING in kcm_exit_net (3) Kirill Tkhai
2018-06-01 11:10 ` Kirill Tkhai
2018-06-01 11:30 ` [PATCH net] kcm: Fix use-after-free caused by clonned sockets Kirill Tkhai
2018-06-01 14:28 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=00000000000000dca5056d7c1442@google.com \
--to=syzbot+5f1a04e374a635efc426@syzkaller.appspotmail.com \
--cc=davem@davemloft.net \
--cc=ebiggers@google.com \
--cc=edumazet@google.com \
--cc=ktkhai@virtuozzo.com \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
--cc=tom@quantonium.net \
--cc=viro@ZenIV.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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.