Hello,
syzbot found the following issue on:
HEAD commit: 20b3a3df Linux 4.19.134
git tree: linux-4.19.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=107b2d54900000
kernel config:
https://syzkaller.appspot.com/x/.config?x=7c76c572c403b9ac
dashboard link:
https://syzkaller.appspot.com/bug?extid=06a54a880a95ffd6dcb0
compiler: gcc (GCC) 10.1.0-syz 20200507
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+06a54a...@syzkaller.appspotmail.com
WARNING: CPU: 1 PID: 15431 at kernel/tracepoint.c:256 tracepoint_add_func+0x254/0x820 kernel/tracepoint.c:256
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 15431 Comm: syz-executor.2 Not tainted 4.19.134-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x61 kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:tracepoint_add_func+0x254/0x820 kernel/tracepoint.c:256
Code: 44 24 20 48 8b 5b 08 80 38 00 0f 85 07 05 00 00 48 8b 44 24 08 48 3b 58 08 0f 85 2d ff ff ff 41 bc ef ff ff ff e8 cc bf fe ff <0f> 0b e8 c5 bf fe ff 44 89 e0 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e
RSP: 0018:ffff888027547a88 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffffffff88d71340 RCX: ffffc9000a002000
RDX: 000000000000159d RSI: ffffffff816aef74 RDI: ffff8880a65feeb0
RBP: ffffffff81470190 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000004 R11: 0000000000000000 R12: 00000000ffffffef
R13: 0000000000000001 R14: ffff8880a65fee90 R15: dffffc0000000000
tracepoint_probe_register_prio kernel/tracepoint.c:328 [inline]
tracepoint_probe_register+0x9c/0xe0 kernel/tracepoint.c:348
trace_event_reg+0x28f/0x340 kernel/trace/trace_events.c:306
perf_trace_event_reg kernel/trace/trace_event_perf.c:124 [inline]
perf_trace_event_init+0x4c1/0x920 kernel/trace/trace_event_perf.c:199
perf_trace_init+0x176/0x240 kernel/trace/trace_event_perf.c:223
perf_tp_event_init+0xa2/0x120 kernel/events/core.c:8465
perf_try_init_event+0x124/0x2e0 kernel/events/core.c:9860
perf_init_event kernel/events/core.c:9898 [inline]
perf_event_alloc.part.0+0x109d/0x2eb0 kernel/events/core.c:10165
perf_event_alloc kernel/events/core.c:10535 [inline]
__do_sys_perf_event_open kernel/events/core.c:10636 [inline]
__se_sys_perf_event_open+0x550/0x2720 kernel/events/core.c:10525
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c369
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f35286dbc78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00000000000230c0 RCX: 000000000045c369
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 000000000078bf50 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffe3c22b6cf R14: 00007f35286dc9c0 R15: 000000000078bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
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