Cc'd Frederic and Peter.
-- Steve On Sun, 28 Jun 2020 04:29:17 -0700 syzbot <syzbot+721aa903751db87aa...@syzkaller.appspotmail.com> wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: 7a64135f libbpf: Adjust SEC short cut for expected attach .. > git tree: bpf > console output: https://syzkaller.appspot.com/x/log.txt?x=142782e3100000 > kernel config: https://syzkaller.appspot.com/x/.config?x=dcc6334acae363d4 > dashboard link: https://syzkaller.appspot.com/bug?extid=721aa903751db87aa244 > compiler: gcc (GCC) 10.1.0-syz 20200507 > > 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+721aa903751db87aa...@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 16762 at kernel/tracepoint.c:243 > tracepoint_add_func+0x254/0x880 kernel/tracepoint.c:243 > Kernel panic - not syncing: panic_on_warn set ... > CPU: 1 PID: 16762 Comm: syz-executor.4 Not tainted 5.8.0-rc1-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+0x18f/0x20d lib/dump_stack.c:118 > panic+0x2e3/0x75c kernel/panic.c:231 > __warn.cold+0x20/0x45 kernel/panic.c:600 > report_bug+0x1bd/0x210 lib/bug.c:198 > exc_invalid_op+0x24d/0x400 arch/x86/kernel/traps.c:235 > asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563 > RIP: 0010:tracepoint_add_func+0x254/0x880 kernel/tracepoint.c:243 > Code: 44 24 20 48 8b 5b 08 80 38 00 0f 85 6b 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 4c 78 fe ff <0f> 0b e8 45 78 fe ff > 44 89 e0 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e > RSP: 0018:ffffc90001497a98 EFLAGS: 00010216 > RAX: 000000000000199a RBX: ffffffff89b99040 RCX: ffffc90011df4000 > RDX: 0000000000040000 RSI: ffffffff8174d824 RDI: ffff8880979adb30 > RBP: ffffffff814f1b80 R08: 0000000000000000 R09: ffffffff89bf9867 > R10: 000000000000000a R11: 0000000000000000 R12: 00000000ffffffef > R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880979adb10 > tracepoint_probe_register_prio kernel/tracepoint.c:315 [inline] > tracepoint_probe_register+0x9c/0xe0 kernel/tracepoint.c:335 > trace_event_reg+0x28f/0x350 kernel/trace/trace_events.c:304 > perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] > perf_trace_event_init+0x532/0x9a0 kernel/trace/trace_event_perf.c:204 > perf_trace_init+0x176/0x240 kernel/trace/trace_event_perf.c:228 > perf_tp_event_init+0xa2/0x120 kernel/events/core.c:9330 > perf_try_init_event+0x12a/0x560 kernel/events/core.c:10782 > perf_init_event kernel/events/core.c:10834 [inline] > perf_event_alloc.part.0+0xdee/0x36f0 kernel/events/core.c:11110 > perf_event_alloc kernel/events/core.c:11489 [inline] > __do_sys_perf_event_open+0x72c/0x2b50 kernel/events/core.c:11605 > do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 > entry_SYSCALL_64_after_hwframe+0x44/0xa9 > RIP: 0033:0x45cb19 > Code: Bad RIP value. > RSP: 002b:00007f2d99608c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a > RAX: ffffffffffffffda RBX: 00000000004fa640 RCX: 000000000045cb19 > RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000020000100 > RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 > R10: ffffffffffffffff R11: 0000000000000246 R12: 00000000ffffffff > R13: 0000000000000841 R14: 00000000004cb320 R15: 00007f2d996096d4 > Kernel Offset: disabled > > > --- > This bug is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkal...@googlegroups.com. > > syzbot will keep track of this bug report. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
