[ 26.812768] audit: type=1800 audit(1540322976.653:27): pid=5247 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 26.832487] audit: type=1800 audit(1540322976.653:28): pid=5247 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. [ 27.586536] audit: type=1800 audit(1540322977.483:29): pid=5247 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 [ 27.607387] audit: type=1800 audit(1540322977.483:30): pid=5247 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 '10.128.0.9' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.072543] kasan: CONFIG_KASAN_INLINE enabled [ 46.077263] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.084780] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.091015] CPU: 0 PID: 5401 Comm: syz-executor519 Not tainted 4.19.0+ #299 [ 46.098095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.107442] RIP: 0010:rb_erase+0x306/0x3710 [ 46.111749] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 46.130660] RSP: 0018:ffff8801bac96918 EFLAGS: 00010202 [ 46.136024] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 46.143282] RDX: 1ffff10037592d2b RSI: ffffffff8afbf860 RDI: 0000000000000008 [ 46.150554] RBP: ffff8801bac97320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 46.157809] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b76fb970 [ 46.165087] R13: dffffc0000000000 R14: ffff8801bac972f8 R15: ffff8801bac97438 [ 46.172351] FS: 0000000001b2c880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 46.180585] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.186455] CR2: 0000000020000080 CR3: 00000001d8e8a000 CR4: 00000000001406f0 [ 46.193709] Call Trace: [ 46.196288] ? lockdep_on+0x50/0x50 [ 46.199899] ? rb_insert_color+0x1460/0x1460 [ 46.204294] ? lock_downgrade+0x900/0x900 [ 46.208430] ? noop_count+0x40/0x40 [ 46.212042] ? lock_pin_lock+0x350/0x350 [ 46.216112] ? rcu_bh_qs+0xc0/0xc0 [ 46.219638] ? unwind_dump+0x190/0x190 [ 46.223525] ? kasan_check_read+0x11/0x20 [ 46.227659] ? noop_count+0x40/0x40 [ 46.231297] ? lock_pin_lock+0x350/0x350 [ 46.235362] ? mark_held_locks+0x130/0x130 [ 46.239582] ? check_usage_forwards+0x3e0/0x3e0 [ 46.244238] ? __bfs+0x385/0x7a0 [ 46.247589] ? check_usage+0x1a9/0x790 [ 46.251461] ? lock_pin_lock+0x350/0x350 [ 46.255508] ? check_usage_forwards+0x3e0/0x3e0 [ 46.260162] ? __bfs+0x385/0x7a0 [ 46.263517] ? modules_open+0xa0/0xa0 [ 46.267322] ? lockdep_on+0x50/0x50 [ 46.270933] ? lock_pin_lock+0x350/0x350 [ 46.274982] ? mark_held_locks+0x130/0x130 [ 46.279205] ? kasan_check_read+0x11/0x20 [ 46.283338] ? __lock_acquire+0x2881/0x4ec0 [ 46.287653] ? mark_held_locks+0x130/0x130 [ 46.291880] ? print_usage_bug+0xc0/0xc0 [ 46.295929] ? _raw_spin_unlock+0x2c/0x50 [ 46.300061] ? graph_lock+0x170/0x170 [ 46.303847] ? ext4_exit_mballoc+0xc0/0xc0 [ 46.308066] ? __lock_acquire+0x7ec/0x4ec0 [ 46.312284] ? find_held_lock+0x36/0x1c0 [ 46.316334] ? mark_held_locks+0x130/0x130 [ 46.320556] ? lock_downgrade+0x900/0x900 [ 46.324700] ? ext4_es_scan+0x960/0x960 [ 46.328665] ? do_raw_write_trylock+0x1c0/0x1c0 [ 46.333329] ? kasan_check_write+0x14/0x20 [ 46.337554] ? lock_acquire+0x1ed/0x520 [ 46.341514] ? integrity_inode_free+0x77/0x320 [ 46.346101] ? ext4_es_remove_extent+0x151/0x500 [ 46.350845] ? lock_release+0x970/0x970 [ 46.354808] ? kasan_check_write+0x14/0x20 [ 46.359028] ? do_raw_write_lock+0xbd/0x1e0 [ 46.363341] integrity_inode_free+0x12f/0x320 [ 46.367827] security_inode_free+0x19/0x90 [ 46.372045] __destroy_inode+0x328/0x820 [ 46.376103] ? generic_update_time+0x450/0x450 [ 46.380706] ? evict+0x5d8/0x980 [ 46.384069] ? lock_downgrade+0x900/0x900 [ 46.388241] ? __inode_wait_for_writeback+0x2cf/0x380 [ 46.393427] destroy_inode+0xda/0x200 [ 46.397222] ? __destroy_inode+0x820/0x820 [ 46.401462] ? kasan_check_write+0x14/0x20 [ 46.405692] ? do_raw_spin_lock+0xc1/0x230 [ 46.409914] evict+0x5e0/0x980 [ 46.413122] ? destroy_inode+0x200/0x200 [ 46.417179] ? iput+0x671/0xa90 [ 46.420465] ? lock_downgrade+0x900/0x900 [ 46.424601] ? kasan_check_read+0x11/0x20 [ 46.428746] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 46.433314] ? lock_downgrade+0x900/0x900 [ 46.437448] iput+0x679/0xa90 [ 46.440544] ? inode_add_lru+0x2a0/0x2a0 [ 46.444592] ? up_write+0x7b/0x220 [ 46.448115] ? up_read+0x110/0x110 [ 46.451637] ? up_read+0x110/0x110 [ 46.455164] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.460698] ? check_preemption_disabled+0x48/0x280 [ 46.465703] ext4_ioctl+0x236f/0x4210 [ 46.469489] ? is_bpf_text_address+0xac/0x170 [ 46.473970] ? ext4_ioctl_group_add+0x560/0x560 [ 46.478638] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 46.484419] ? kasan_check_read+0x11/0x20 [ 46.488550] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 46.493809] ? rcu_bh_qs+0xc0/0xc0 [ 46.497336] ? rcu_bh_qs+0xc0/0xc0 [ 46.500877] ? unwind_dump+0x190/0x190 [ 46.504771] ? is_bpf_text_address+0xd3/0x170 [ 46.509250] ? kernel_text_address+0x79/0xf0 [ 46.513647] ? __kernel_text_address+0xd/0x40 [ 46.518132] ? unwind_get_return_address+0x61/0xa0 [ 46.523046] ? __save_stack_trace+0x8d/0xf0 [ 46.527356] ? save_stack+0xa9/0xd0 [ 46.530989] ? save_stack+0x43/0xd0 [ 46.534598] ? __kasan_slab_free+0x102/0x150 [ 46.538990] ? kasan_slab_free+0xe/0x10 [ 46.542947] ? kmem_cache_free+0x83/0x290 [ 46.547080] ? putname+0xf2/0x130 [ 46.550516] ? do_sys_open+0x54d/0x700 [ 46.554385] ? __x64_sys_openat+0x9d/0x100 [ 46.558607] ? do_syscall_64+0x1b9/0x820 [ 46.562651] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.568005] ? trace_hardirqs_off+0xb8/0x310 [ 46.572395] ? kasan_check_read+0x11/0x20 [ 46.576552] ? do_raw_spin_unlock+0xa7/0x330 [ 46.580960] ? trace_hardirqs_on+0x310/0x310 [ 46.585357] ? kasan_check_write+0x14/0x20 [ 46.589575] ? trace_hardirqs_off+0xb8/0x310 [ 46.593966] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.599487] ? check_preemption_disabled+0x48/0x280 [ 46.604486] ? check_preemption_disabled+0x48/0x280 [ 46.609489] ? ext4_ioctl_group_add+0x560/0x560 [ 46.614155] do_vfs_ioctl+0x1de/0x1720 [ 46.618055] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 46.623321] ? ioctl_preallocate+0x300/0x300 [ 46.627714] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.633237] ? __fget_light+0x2e9/0x430 [ 46.637194] ? fget_raw+0x20/0x20 [ 46.640630] ? putname+0xf2/0x130 [ 46.644078] ? rcu_read_lock_sched_held+0x108/0x120 [ 46.649089] ? kmem_cache_free+0x24f/0x290 [ 46.653305] ? putname+0xf7/0x130 [ 46.656745] ? do_syscall_64+0x9a/0x820 [ 46.660701] ? do_syscall_64+0x9a/0x820 [ 46.664661] ? lockdep_hardirqs_on+0x421/0x5c0 [ 46.669233] ? security_file_ioctl+0x94/0xc0 [ 46.673643] ksys_ioctl+0xa9/0xd0 [ 46.677094] __x64_sys_ioctl+0x73/0xb0 [ 46.680968] do_syscall_64+0x1b9/0x820 [ 46.684843] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 46.690196] ? syscall_return_slowpath+0x5e0/0x5e0 [ 46.695108] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.699934] ? trace_hardirqs_on_caller+0x310/0x310 [ 46.704937] ? prepare_exit_to_usermode+0x291/0x3b0 [ 46.709937] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.714765] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.719939] RIP: 0033:0x440009 [ 46.723117] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 46.742031] RSP: 002b:00007ffc1aed5908 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 46.749734] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 46.756996] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 46.764257] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 46.771520] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 46.778785] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 46.786045] Modules linked in: [ 46.789383] ---[ end trace 7d0cd3f63e65d0d9 ]--- [ 46.794177] RIP: 0010:rb_erase+0x306/0x3710 [ 46.798492] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 46.817442] RSP: 0018:ffff8801bac96918 EFLAGS: 00010202 [ 46.822811] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 46.830101] RDX: 1ffff10037592d2b RSI: ffffffff8afbf860 RDI: 0000000000000008 [ 46.837471] RBP: ffff8801bac97320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 46.844782] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b76fb970 [ 46.852053] R13: dffffc0000000000 R14: ffff8801bac972f8 R15: ffff8801bac97438 [ 46.859342] FS: 0000000001b2c880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 46.867624] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.873488] CR2: 0000000020000080 CR3: 00000001d8e8a000 CR4: 00000000001406f0 [ 46.880775] Kernel panic - not syncing: Fatal exception [ 46.886906] Kernel Offset: disabled [ 46.890527] Rebooting in 86400 seconds..