general protection fault in timerqueue_add (3)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: f53a7ad1 r8152: Set memory to all 0xFFs on failed reg reads
git tree: net
console output: https://syzkaller.appspot.com/x/log.txt?x=1558c066600000
kernel config: https://syzkaller.appspot.com/x/.config?x=6919752cc1b760b4
dashboard link: https://syzkaller.appspot.com/bug?extid=ad5d919070ce36a2b465
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
CC: [linux-...@vger.kernel.org tg...@linutronix.de
net...@vger.kernel.org]

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+ad5d91...@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: 9823 Comm: syz-executor.4 Not tainted 5.3.0-rc5+ #178
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:timerqueue_add+0xf2/0x320 lib/timerqueue.c:39
Code: 48 c1 ea 03 42 80 3c 2a 00 0f 85 bc 01 00 00 49 8b 17 48 85 d2 74 3d
48 89 d3 e8 b9 38 39 fa 48 8d 7b 18 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00
0f 85 a3 01 00 00 4c 8b 7b 18 4c 89 f7 4c 89 fe e8
RSP: 0018:ffff88806e75fb20 EFLAGS: 00010806
RAX: 15bd0a7f91292a8b RBX: ade853fc89495441 RCX: ffffffff8739389c
RDX: 0000000000000000 RSI: ffffffff87393877 RDI: ade853fc89495459
RBP: ffff88806e75fb50 R08: ffff88806e752640 R09: fffffbfff134af38
R10: fffffbfff134af37 R11: ffffffff89a579bf R12: ffff88806e75fdc0
R13: dffffc0000000000 R14: 0000003629b88862 R15: ffffffff862b4e78
FS: 0000555556c54940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec0ccd778 CR3: 000000006e734000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
enqueue_hrtimer+0x153/0x420 kernel/time/hrtimer.c:950
__hrtimer_start_range_ns kernel/time/hrtimer.c:1079 [inline]
hrtimer_start_range_ns+0x603/0xcb0 kernel/time/hrtimer.c:1105
hrtimer_start_expires include/linux/hrtimer.h:395 [inline]
do_nanosleep+0x19b/0x6a0 kernel/time/hrtimer.c:1676
hrtimer_nanosleep+0x2a6/0x570 kernel/time/hrtimer.c:1733
__do_sys_nanosleep kernel/time/hrtimer.c:1767 [inline]
__se_sys_nanosleep kernel/time/hrtimer.c:1754 [inline]
__x64_sys_nanosleep+0x1a6/0x220 kernel/time/hrtimer.c:1754
do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457d20
Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f
44 00 00 83 3d 31 ea 61 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 0f 83 24 d3 fb ff c3 48 83 ec 08 e8 ea 46 00 00
RSP: 002b:00007ffec0ccd758 EFLAGS: 00000246 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 0000000000038cae RCX: 0000000000457d20
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffec0ccd760
RBP: 000000000000029b R08: 0000000000000001 R09: 0000555556c54940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffec0ccd7b0 R14: 0000000000038cae R15: 00007ffec0ccd7c0
Modules linked in:
---[ end trace a8adbff3ceb53339 ]---
RIP: 0010:timerqueue_add+0xf2/0x320 lib/timerqueue.c:39
Code: 48 c1 ea 03 42 80 3c 2a 00 0f 85 bc 01 00 00 49 8b 17 48 85 d2 74 3d
48 89 d3 e8 b9 38 39 fa 48 8d 7b 18 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00
0f 85 a3 01 00 00 4c 8b 7b 18 4c 89 f7 4c 89 fe e8
RSP: 0018:ffff88806e75fb20 EFLAGS: 00010806
RAX: 15bd0a7f91292a8b RBX: ade853fc89495441 RCX: ffffffff8739389c
RDX: 0000000000000000 RSI: ffffffff87393877 RDI: ade853fc89495459
RBP: ffff88806e75fb50 R08: ffff88806e752640 R09: fffffbfff134af38
R10: fffffbfff134af37 R11: ffffffff89a579bf R12: ffff88806e75fdc0
R13: dffffc0000000000 R14: 0000003629b88862 R15: ffffffff862b4e78
FS: 0000555556c54940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec0ccd778 CR3: 000000006e734000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.