[ 35.586243][ T26] audit: type=1800 audit(1554957589.144:27): pid=7487 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 35.608258][ T26] audit: type=1800 audit(1554957589.154:28): pid=7487 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 36.536054][ T26] audit: type=1800 audit(1554957590.154:29): pid=7487 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 36.561599][ T26] audit: type=1800 audit(1554957590.154:30): pid=7487 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 74.710420][ C0] WARNING: CPU: 0 PID: 9 at kernel/events/core.c:1835 perf_group_attach+0x3fd/0x4d0 [ 74.719991][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 74.726582][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.1.0-rc4+ #61 [ 74.733940][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.743992][ C0] Call Trace: [ 74.747268][ C0] [ 74.750125][ C0] dump_stack+0x172/0x1f0 [ 74.754457][ C0] ? perf_group_attach+0x340/0x4d0 [ 74.759569][ C0] panic+0x2cb/0x65c [ 74.763460][ C0] ? __warn_printk+0xf3/0xf3 [ 74.768051][ C0] ? perf_group_attach+0x3fd/0x4d0 [ 74.773167][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.779405][ C0] ? __warn.cold+0x5/0x45 [ 74.783734][ C0] ? __warn+0xe8/0x1d0 [ 74.787800][ C0] ? perf_group_attach+0x3fd/0x4d0 [ 74.792905][ C0] __warn.cold+0x20/0x45 [ 74.797150][ C0] ? __lock_acquire+0x548/0x3fb0 [ 74.802086][ C0] ? perf_group_attach+0x3fd/0x4d0 [ 74.807201][ C0] report_bug+0x263/0x2b0 [ 74.811535][ C0] do_error_trap+0x11b/0x200 [ 74.816742][ C0] do_invalid_op+0x37/0x50 [ 74.821155][ C0] ? perf_group_attach+0x3fd/0x4d0 [ 74.826266][ C0] invalid_op+0x14/0x20 [ 74.830417][ C0] RIP: 0010:perf_group_attach+0x3fd/0x4d0 [ 74.836144][ C0] Code: ff 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 80 3c 28 00 75 57 48 8b 5b 10 48 83 eb 10 49 39 dc 75 d4 e9 20 ff ff ff e8 43 b4 eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 d8 60 5e 89 e8 c0 bb 23 00 e9 5b fc [ 74.855764][ C0] RSP: 0018:ffff8880ae807ea8 EFLAGS: 00010006 [ 74.861835][ C0] RAX: ffff8880aa268240 RBX: ffff88809128ad00 RCX: ffffffff8184d798 [ 74.869828][ C0] RDX: 0000000000010100 RSI: ffffffff8184dabd RDI: ffff88809128af18 [ 74.877800][ C0] RBP: ffff8880ae807ed8 R08: ffff8880aa268240 R09: ffffffff899ba008 [ 74.885858][ C0] R10: ffffffff899ba010 R11: 0000000000000001 R12: ffff8880a9822cc0 [ 74.893827][ C0] R13: ffffe8ffffc13780 R14: 0000000000000000 R15: ffff8880ae832048 [ 74.901819][ C0] ? perf_group_attach+0xd8/0x4d0 [ 74.906848][ C0] ? perf_group_attach+0x3fd/0x4d0 [ 74.911964][ C0] ? perf_group_attach+0x3fd/0x4d0 [ 74.917101][ C0] __perf_install_in_context+0x4b5/0x960 [ 74.922738][ C0] ? kvm_clock_read+0x18/0x30 [ 74.927433][ C0] ? __perf_event_enable+0x920/0x920 [ 74.932715][ C0] remote_function+0x12b/0x1a0 [ 74.937487][ C0] ? debug_smp_processor_id+0x3c/0x280 [ 74.942946][ C0] flush_smp_call_function_queue+0x14a/0x500 [ 74.948919][ C0] ? perf_duration_warn+0x40/0x40 [ 74.953948][ C0] generic_smp_call_function_single_interrupt+0x13/0x2b [ 74.960887][ C0] smp_call_function_single_interrupt+0xa3/0x460 [ 74.967220][ C0] call_function_single_interrupt+0xf/0x20 [ 74.973216][ C0] [ 74.976157][ C0] RIP: 0010:kmem_cache_free+0xab/0x260 [ 74.981632][ C0] Code: e8 ea 28 00 00 84 c0 74 77 41 f7 c5 00 02 00 00 74 4f e8 a8 aa cd ff 48 83 3d 60 46 ea 06 00 0f 84 ae 01 00 00 4c 89 ef 57 9d <0f> 1f 44 00 00 4c 8b 6d 08 0f 1f 44 00 00 65 8b 05 00 31 59 7e 83 [ 75.001275][ C0] RSP: 0018:ffff8880aa277bf8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 [ 75.009721][ C0] RAX: 0000000000000007 RBX: ffff88808d6a0480 RCX: 0000000000000000 [ 75.017709][ C0] RDX: 0000000000000000 RSI: ffff8880aa268ac0 RDI: 0000000000000282 [ 75.025776][ C0] RBP: ffff8880aa277c18 R08: ffff8880aa268240 R09: 0000000000000000 [ 75.033765][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88821bc407c0 [ 75.041762][ C0] R13: 0000000000000282 R14: ffffffff81427aad R15: ffff8880aa277d28 [ 75.049758][ C0] ? free_task+0xdd/0x120 [ 75.054116][ C0] free_task+0xdd/0x120 [ 75.058278][ C0] __put_task_struct+0x1fd/0x4e0 [ 75.063231][ C0] delayed_put_task_struct+0x1ec/0x340 [ 75.068690][ C0] ? child_wait_callback+0x270/0x270 [ 75.073966][ C0] rcu_core+0x928/0x1390 [ 75.078212][ C0] ? rcu_check_gp_start_stall+0x250/0x250 [ 75.083919][ C0] ? sched_clock+0x2e/0x50 [ 75.088329][ C0] __do_softirq+0x266/0x95a [ 75.092813][ C0] ? __sched_text_start+0x8/0x8 [ 75.097662][ C0] ? takeover_tasklets+0x7b0/0x7b0 [ 75.102769][ C0] run_ksoftirqd+0x8e/0x110 [ 75.107521][ C0] smpboot_thread_fn+0x6ab/0xa10 [ 75.112446][ C0] ? sort_range+0x30/0x30 [ 75.116768][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 75.122995][ C0] ? __kthread_parkme+0xfb/0x1b0 [ 75.127930][ C0] kthread+0x357/0x430 [ 75.131988][ C0] ? sort_range+0x30/0x30 [ 75.136366][ C0] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 75.142751][ C0] ret_from_fork+0x3a/0x50 [ 75.147985][ C0] Kernel Offset: disabled [ 75.152371][ C0] Rebooting in 86400 seconds..