Hello,
syzbot found the following issue on:
HEAD commit: f6d5cb9e Linux 4.19.142
git tree: linux-4.19.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=1072cdd5900000
kernel config:
https://syzkaller.appspot.com/x/.config?x=30067df04d3254aa
dashboard link:
https://syzkaller.appspot.com/bug?extid=b4e0d2c4da75256c90ca
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro:
https://syzkaller.appspot.com/x/repro.syz?x=12ddd3b9900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+b4e0d2...@syzkaller.appspotmail.com
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
Bluetooth: hci0: command 0x0409 tx timeout
Bluetooth: hci0: command 0x041b tx timeout
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: 1 PID: 7583 Comm: syz-executor.0 Not tainted 4.19.142-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sock_release+0xbb/0x2a0 net/socket.c:579
Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 c9 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 28 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b2 01 00 00 48 89 df 41 ff 54 24 10 48 8d 7b 20
RSP: 0018:ffff88808463fdf8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888082b7b0c0 RCX: 0000000000004724
RDX: 0000000000000002 RSI: 00000000a87acb66 RDI: 0000000000000010
RBP: ffff888082b7b1c8 R08: ffffffff8b40e1a0 R09: 0000000000000000
R10: ffff8880a405c908 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888082b7b0e8 R14: 0000000000000000 R15: ffff8880a943fe20
FS: 0000000002d69940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ece9b7f970 CR3: 00000000a7613000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
sock_close+0x15/0x20 net/socket.c:1140
__fput+0x2ce/0x890 fs/file_table.c:278
task_work_run+0x148/0x1c0 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:193 [inline]
exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x416f01
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffc821c5d80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000416f01
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000001190358 R09: 0000000000000000
R10: 00007ffc821c5e60 R11: 0000000000000293 R12: 0000000001190360
R13: 0000000000000000 R14: ffffffffffffffff R15: 000000000118cf4c
Modules linked in:
---[ end trace 676eed72a99a616d ]---
RIP: 0010:__sock_release+0xbb/0x2a0 net/socket.c:579
Code: ff df 48 c1 ea 03 80 3c 02 00 0f 85 c9 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 28 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 b2 01 00 00 48 89 df 41 ff 54 24 10 48 8d 7b 20
RSP: 0018:ffff88808463fdf8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888082b7b0c0 RCX: 0000000000004724
RDX: 0000000000000002 RSI: 00000000a87acb66 RDI: 0000000000000010
RBP: ffff888082b7b1c8 R08: ffffffff8b40e1a0 R09: 0000000000000000
R10: ffff8880a405c908 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888082b7b0e8 R14: 0000000000000000 R15: ffff8880a943fe20
FS: 0000000002d69940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ece9b7f970 CR3: 00000000a7613000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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