[ 77.207276][ T26] audit: type=1800 audit(1566014796.011:25): pid=10458 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 77.252097][ T26] audit: type=1800 audit(1566014796.011:26): pid=10458 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 77.286205][ T26] audit: type=1800 audit(1566014796.021:27): pid=10458 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 77.306893][ T26] audit: type=1800 audit(1566014796.021:28): pid=10458 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.149' (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 syzkaller login: [ 87.601106][ T3516] list_del corruption. prev->next should be ffff8880a4b844a0, but was ffff8880a401d220 [ 87.613072][ T3516] ------------[ cut here ]------------ [ 87.618564][ T3516] kernel BUG at lib/list_debug.c:51! [ 87.624585][ T3516] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 87.630665][ T3516] CPU: 0 PID: 3516 Comm: kworker/0:2 Not tainted 5.3.0-rc3+ #164 [ 87.638372][ T3516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.648595][ T3516] Workqueue: krxrpcd rxrpc_local_processor [ 87.654405][ T3516] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f [ 87.660726][ T3516] Code: e8 e9 03 1e fe 0f 0b 48 89 f1 48 c7 c7 80 25 c6 87 4c 89 e6 e8 d5 03 1e fe 0f 0b 4c 89 f6 48 c7 c7 20 27 c6 87 e8 c4 03 1e fe <0f> 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 26 c6 87 e8 b0 03 1e fe 0f 0b [ 87.680373][ T3516] RSP: 0018:ffff88809cba7cc0 EFLAGS: 00010286 [ 87.686454][ T3516] RAX: 0000000000000054 RBX: ffff8880a4b844b8 RCX: 0000000000000000 [ 87.694465][ T3516] RDX: 0000000000000000 RSI: ffffffff815c3b96 RDI: ffffed1013974f8a [ 87.702732][ T3516] RBP: ffff88809cba7cd8 R08: 0000000000000054 R09: ffffed1015d060d1 [ 87.710697][ T3516] R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff88809be803b8 [ 87.718671][ T3516] R13: ffff88809be803b8 R14: ffff8880a4b844a0 R15: ffff88809515a080 [ 87.726660][ T3516] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 87.735581][ T3516] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.742166][ T3516] CR2: 00007fffb5cf71a4 CR3: 0000000095a3c000 CR4: 00000000001406f0 [ 87.750138][ T3516] Call Trace: [ 87.753428][ T3516] rxrpc_local_processor+0x251/0x830 [ 87.758717][ T3516] process_one_work+0x9af/0x1740 [ 87.763646][ T3516] ? pwq_dec_nr_in_flight+0x320/0x320 [ 87.769016][ T3516] ? lock_acquire+0x190/0x410 [ 87.773706][ T3516] worker_thread+0x98/0xe40 [ 87.778203][ T3516] ? trace_hardirqs_on+0x67/0x240 [ 87.783221][ T3516] kthread+0x361/0x430 [ 87.787280][ T3516] ? process_one_work+0x1740/0x1740 [ 87.792485][ T3516] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 87.798734][ T3516] ret_from_fork+0x24/0x30 [ 87.803131][ T3516] Modules linked in: [ 87.807105][ T3516] ---[ end trace c0f32704bf5fd9c8 ]--- [ 87.812599][ T3516] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4f [ 87.819004][ T3516] Code: e8 e9 03 1e fe 0f 0b 48 89 f1 48 c7 c7 80 25 c6 87 4c 89 e6 e8 d5 03 1e fe 0f 0b 4c 89 f6 48 c7 c7 20 27 c6 87 e8 c4 03 1e fe <0f> 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 26 c6 87 e8 b0 03 1e fe 0f 0b [ 87.838754][ T3516] RSP: 0018:ffff88809cba7cc0 EFLAGS: 00010286 [ 87.844908][ T3516] RAX: 0000000000000054 RBX: ffff8880a4b844b8 RCX: 0000000000000000 [ 87.852890][ T3516] RDX: 0000000000000000 RSI: ffffffff815c3b96 RDI: ffffed1013974f8a [ 87.860912][ T3516] RBP: ffff88809cba7cd8 R08: 0000000000000054 R09: ffffed1015d060d1 [ 87.868933][ T3516] R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff88809be803b8 [ 87.876965][ T3516] R13: ffff88809be803b8 R14: ffff8880a4b844a0 R15: ffff88809515a080 [ 87.884986][ T3516] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 87.893976][ T3516] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.900574][ T3516] CR2: 00007fffb5cf71a4 CR3: 0000000095a3c000 CR4: 00000000001406f0 [ 87.908585][ T3516] Kernel panic - not syncing: Fatal exception [ 87.915797][ T3516] Kernel Offset: disabled [ 87.920130][ T3516] Rebooting in 86400 seconds..