WARNING in tracepoint_probe_register_prio (2)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: c10b57a5 Linux 4.14.176
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=141d28d8100000
kernel config: https://syzkaller.appspot.com/x/.config?x=457897b554d08537
dashboard link: https://syzkaller.appspot.com/bug?extid=ab75b858fdfbf827606e
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+ab75b8...@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 14702 at kernel/tracepoint.c:210 tracepoint_add_func kernel/tracepoint.c:210 [inline]
WARNING: CPU: 0 PID: 14702 at kernel/tracepoint.c:210 tracepoint_probe_register_prio+0x1e5/0x6d0 kernel/tracepoint.c:283
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 14702 Comm: syz-executor.1 Not tainted 4.14.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x13e/0x194 lib/dump_stack.c:58
panic+0x1f9/0x42d kernel/panic.c:183
__warn.cold+0x2f/0x30 kernel/panic.c:547
report_bug+0x20a/0x248 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:177 [inline]
fixup_bug arch/x86/kernel/traps.c:172 [inline]
do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
audit: type=1326 audit(1587606146.295:209): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=14700 comm="syz-executor.2" exe="/root/syz-executor.2" sig=9 arch=c000003e syscall=228 compat=0 ip=0x45f66a code=0x0
invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:tracepoint_add_func kernel/tracepoint.c:210 [inline]
RIP: 0010:tracepoint_probe_register_prio+0x1e5/0x6d0 kernel/tracepoint.c:283
RSP: 0018:ffff88821392fbe0 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffffffff888dd8e0 RCX: ffffc90006b1a000
RDX: 0000000000001486 RSI: ffffffff815b6955 RDI: ffff8880289dc830
RBP: ffff8880289dc810 R08: dffffc0000000000 R09: ffffffff8a061550
R10: ffff88821392fbe0 R11: ffff888046d6e100 R12: 00000000ffffffef
R13: 0000000000000001 R14: 00000000ffffffff R15: ffffffff813d98a0
trace_event_reg+0x272/0x330 kernel/trace/trace_events.c:305
perf_trace_event_reg kernel/trace/trace_event_perf.c:122 [inline]
perf_trace_event_init kernel/trace/trace_event_perf.c:197 [inline]
perf_trace_init+0x424/0xa50 kernel/trace/trace_event_perf.c:221
perf_tp_event_init+0x79/0xf0 kernel/events/core.c:8117
perf_try_init_event+0xdf/0x1f0 kernel/events/core.c:9353
perf_init_event kernel/events/core.c:9391 [inline]
perf_event_alloc.part.0+0xd89/0x25a0 kernel/events/core.c:9651
perf_event_alloc kernel/events/core.c:10004 [inline]
SYSC_perf_event_open+0xa80/0x24a0 kernel/events/core.c:10108
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007f320ed3ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00000000004f90c0 RCX: 000000000045c829
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000100
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000818 R14: 00000000004cacfc R15: 00007f320ed3f6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..


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[syzbot]

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