From: syzbot <syzbot+7dd2da51d8ae6f990403@syzkaller.appspotmail.com>
To: a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org,
davem@davemloft.net, linux-kernel@vger.kernel.org,
mareklindner@neomailbox.ch, netdev@vger.kernel.org,
sven@narfation.org, sw@simonwunderlich.de,
syzkaller-bugs@googlegroups.com
Subject: general protection fault in batadv_iv_ogm_queue_add
Date: Sun, 20 Oct 2019 22:21:06 -0700 [thread overview]
Message-ID: <000000000000ccde8d059564d93d@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: 998d7551 Merge branch 'akpm' (patches from Andrew)
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1702db87600000
kernel config: https://syzkaller.appspot.com/x/.config?x=e0ac4d9b35046343
dashboard link: https://syzkaller.appspot.com/bug?extid=7dd2da51d8ae6f990403
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7dd2da51d8ae6f990403@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4256 Comm: kworker/u4:0 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:batadv_iv_ogm_queue_add+0x49/0x1120
net/batman-adv/bat_iv_ogm.c:605
Code: 48 89 75 b8 48 89 4d c0 4c 89 45 b0 44 89 4d d0 e8 fc 02 46 fa 48 8d
7b 03 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48
89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 18 0d 00 00
RSP: 0018:ffff88805d2cfb80 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888092284000
RDX: 0000000000000000 RSI: ffffffff872d1214 RDI: 0000000000000003
RBP: ffff88805d2cfc18 R08: ffff888092284000 R09: 0000000000000001
R10: ffffed100ba59f77 R11: 0000000000000003 R12: dffffc0000000000
R13: ffffed101245080e R14: ffff888092284000 R15: 0000000100051cf6
FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200002c0 CR3: 00000000a421b000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
batadv_iv_ogm_schedule+0xb0b/0xe50 net/batman-adv/bat_iv_ogm.c:813
batadv_iv_send_outstanding_bat_ogm_packet+0x580/0x760
net/batman-adv/bat_iv_ogm.c:1675
process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
worker_thread+0x98/0xe40 kernel/workqueue.c:2415
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 04d065842187c2b8 ]---
RIP: 0010:batadv_iv_ogm_queue_add+0x49/0x1120
net/batman-adv/bat_iv_ogm.c:605
Code: 48 89 75 b8 48 89 4d c0 4c 89 45 b0 44 89 4d d0 e8 fc 02 46 fa 48 8d
7b 03 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48
89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 18 0d 00 00
RSP: 0018:ffff88805d2cfb80 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888092284000
RDX: 0000000000000000 RSI: ffffffff872d1214 RDI: 0000000000000003
RBP: ffff88805d2cfc18 R08: ffff888092284000 R09: 0000000000000001
R10: ffffed100ba59f77 R11: 0000000000000003 R12: dffffc0000000000
R13: ffffed101245080e R14: ffff888092284000 R15: 0000000100051cf6
FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200002c0 CR3: 00000000a421b000 CR4: 00000000001426f0
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#status for how to communicate with syzbot.
next reply other threads:[~2019-10-21 5:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-21 5:21 syzbot [this message]
2019-10-21 6:32 ` general protection fault in batadv_iv_ogm_queue_add Sven Eckelmann
2019-10-21 6:54 ` Dmitry Vyukov
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