general protection fault in perf_tp_event (2)

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syzbot

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Dec 14, 2019, 11:19:09 PM12/14/19
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Hello,

syzbot found the following crash on:

HEAD commit: 312017a4 Linux 4.19.89
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15e9e32ee00000
kernel config: https://syzkaller.appspot.com/x/.config?x=67c148d572dbab48
dashboard link: https://syzkaller.appspot.com/bug?extid=603419ed5d21e4831db4
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+603419...@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: 16220 Comm: syz-executor.0 Not tainted 4.19.89-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:perf_tp_event_match kernel/events/core.c:8314 [inline]
RIP: 0010:perf_tp_event+0x1e9/0x850 kernel/events/core.c:8365
Code: 85 db 0f 84 dd 00 00 00 e8 a4 be e8 ff 48 83 eb 60 0f 84 ce 00 00 00
e8 95 be e8 ff 48 8d bb d0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20
84 c0 74 08 3c 03 0f 8e ba 05 00 00 44 8b b3 d0 01
RSP: 0018:ffff8880821e7880 EFLAGS: 00010002
RAX: 000007eb8060204a RBX: 00003f5c03010082 RCX: ffffffff81828461
RDX: 0000000000000000 RSI: ffffffff818284cb RDI: 00003f5c03010252
RBP: ffff8880821e7b70 R08: ffff888085e00480 R09: ffff8880ae800000
R10: ffff8880821e7b98 R11: ffff8880ae80002b R12: dffffc0000000000
R13: ffff8880ae800000 R14: 00000000000000e2 R15: 000000000000002c
FS: 000000000216c940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb6913b6db8 CR3: 0000000050f2a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
perf_trace_run_bpf_submit+0x131/0x190 kernel/events/core.c:8340
perf_trace_sched_wakeup_template+0x471/0x6b0
include/trace/events/sched.h:57
trace_sched_wakeup_new include/trace/events/sched.h:103 [inline]
wake_up_new_task+0x70e/0xcd0 kernel/sched/core.c:2420
_do_fork+0x34f/0xfd0 kernel/fork.c:2222
__do_sys_clone kernel/fork.c:2304 [inline]
__se_sys_clone kernel/fork.c:2298 [inline]
__x64_sys_clone+0xbf/0x150 kernel/fork.c:2298
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45d2d9
Code: ff 48 85 f6 0f 84 d7 8c fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89
d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c
ae 8c fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75
RSP: 002b:00007ffd03d00608 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fb6913b7700 RCX: 000000000045d2d9
RDX: 00007fb6913b79d0 RSI: 00007fb6913b6db0 RDI: 00000000003d0f00
RBP: 00007ffd03d00820 R08: 00007fb6913b7700 R09: 00007fb6913b7700
R10: 00007fb6913b79d0 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffd03d006bf R14: 00007fb6913b79c0 R15: 000000000075bf2c
Modules linked in:

======================================================


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syzbot

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Sep 8, 2020, 7:43:10 PM9/8/20
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Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
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