From: syzbot <syzbot+83a25334ef203851dc81@syzkaller•appspotmail.com>
To: davem@davemloft•net, ericvh@gmail•com,
linux-kernel@vger•kernel.org, lucho@ionkov•net,
netdev@vger•kernel.org, rminnich@sandia•gov,
syzkaller-bugs@googlegroups•com,
v9fs-developer@lists•sourceforge.net
Subject: general protection fault in do_raw_spin_unlock
Date: Mon, 16 Jul 2018 07:59:03 -0700 [thread overview]
Message-ID: <000000000000fedc1105711f11fd@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: 1d4eb636f0ab Add linux-next specific files for 20180716
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1186bf0c400000
kernel config: https://syzkaller.appspot.com/x/.config?x=ea5926dddb0db97a
dashboard link: https://syzkaller.appspot.com/bug?extid=83a25334ef203851dc81
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=179ed444400000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+83a25334ef203851dc81@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
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
CPU: 1 PID: 24 Comm: kworker/1:1 Not tainted 4.18.0-rc5-next-20180716+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: events p9_poll_workfn
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:97 [inline]
RIP: 0010:do_raw_spin_unlock+0x65/0x2f0 kernel/locking/spinlock_debug.c:134
Code: 0a bd 88 48 c7 85 78 ff ff ff b3 8a b5 41 48 c7 45 88 d0 3c 60 81 c7
02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48
89 f8 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9
RSP: 0018:ffff8801d945f288 EFLAGS: 00010047
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8770a045
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: ffff8801d945f310 R08: 1ffff1003b28be45 R09: ffffed0035e7bd88
R10: ffffed0035e7bd88 R11: ffff8801af3dec43 R12: 0000000000000000
R13: 1ffff1003b28be51 R14: ffff8801d945f2e8 R15: ffff8801c5811d50
FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c029 CR3: 00000001b19fd000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:159 [inline]
_raw_spin_unlock_irqrestore+0x27/0xc0 kernel/locking/spinlock.c:184
spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
p9_conn_cancel+0x9b6/0xd30 net/9p/trans_fd.c:208
p9_poll_mux net/9p/trans_fd.c:620 [inline]
p9_poll_workfn+0x4b2/0x6d0 net/9p/trans_fd.c:1107
process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153
worker_thread+0x189/0x13c0 kernel/workqueue.c:2296
kthread+0x345/0x410 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace 4d86351f63a12683 ]---
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:97 [inline]
RIP: 0010:do_raw_spin_unlock+0x65/0x2f0 kernel/locking/spinlock_debug.c:134
Code: 0a bd 88 48 c7 85 78 ff ff ff b3 8a b5 41 48 c7 45 88 d0 3c 60 81 c7
02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48
89 f8 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9
RSP: 0018:ffff8801d945f288 EFLAGS: 00010047
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8770a045
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000004
RBP: ffff8801d945f310 R08: 1ffff1003b28be45 R09: ffffed0035e7bd88
R10: ffffed0035e7bd88 R11: ffff8801af3dec43 R12: 0000000000000000
R13: 1ffff1003b28be51 R14: ffff8801d945f2e8 R15: ffff8801c5811d50
FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c029 CR3: 00000001b19fd000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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
reply other threads:[~2018-07-16 14:59 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=000000000000fedc1105711f11fd@google.com \
--to=syzbot+83a25334ef203851dc81@syzkaller$(echo .)appspotmail.com \
--cc=davem@davemloft$(echo .)net \
--cc=ericvh@gmail$(echo .)com \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=lucho@ionkov$(echo .)net \
--cc=netdev@vger$(echo .)kernel.org \
--cc=rminnich@sandia$(echo .)gov \
--cc=syzkaller-bugs@googlegroups$(echo .)com \
--cc=v9fs-developer@lists$(echo .)sourceforge.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox