[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 60.978572][ T25] audit: type=1800 audit(1568279263.720:25): pid=8452 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 61.018249][ T25] audit: type=1800 audit(1568279263.720:26): pid=8452 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 61.059929][ T25] audit: type=1800 audit(1568279263.730:27): pid=8452 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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 '10.128.0.247' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 77.232461][T12664] kasan: CONFIG_KASAN_INLINE enabled [ 77.238026][T12664] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 77.246082][T12664] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 77.252999][T12664] CPU: 0 PID: 12664 Comm: syz-executor689 Not tainted 5.3.0-rc7+ #0 [ 77.260949][T12664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.271000][T12664] RIP: 0010:dev_map_hash_update_elem+0x3c8/0x6e0 [ 77.277306][T12664] Code: 48 89 f1 48 89 75 c8 48 c1 e9 03 80 3c 11 00 0f 85 d3 02 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 53 10 48 89 d6 48 c1 ee 03 <80> 3c 0e 00 0f 85 97 02 00 00 48 85 c0 48 89 02 74 38 48 89 55 b8 [ 77.296889][T12664] RSP: 0018:ffff8880845c7c30 EFLAGS: 00010046 [ 77.302930][T12664] RAX: 0000000000000000 RBX: ffff8880a02acd80 RCX: dffffc0000000000 [ 77.311011][T12664] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a02acd88 [ 77.318958][T12664] RBP: ffff8880845c7c78 R08: 1ffff1101229ed15 R09: ffffed101229ed16 [ 77.326911][T12664] R10: ffffed101229ed15 R11: ffff8880914f68ab R12: ffff8880914f6780 [ 77.334879][T12664] R13: ffff888090a52000 R14: 0000000000000000 R15: ffff8880914f68a8 [ 77.342828][T12664] FS: 00007fc29cf45700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 77.351815][T12664] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.358424][T12664] CR2: 00007ffd1d820cb0 CR3: 000000008e1e0000 CR4: 00000000001406f0 [ 77.366374][T12664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.374321][T12664] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.382283][T12664] Call Trace: [ 77.385552][T12664] ? __kasan_check_read+0x11/0x20 [ 77.390551][T12664] ? dev_map_update_elem+0x280/0x280 [ 77.395809][T12664] map_update_elem+0xc82/0x10b0 [ 77.400636][T12664] __do_sys_bpf+0x8b5/0x3350 [ 77.405202][T12664] ? bpf_prog_load+0x1660/0x1660 [ 77.410118][T12664] ? lock_downgrade+0x920/0x920 [ 77.414946][T12664] ? __kasan_check_write+0x14/0x20 [ 77.420033][T12664] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.426259][T12664] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.432479][T12664] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 77.437923][T12664] ? do_syscall_64+0x26/0x6a0 [ 77.442575][T12664] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.448615][T12664] ? do_syscall_64+0x26/0x6a0 [ 77.453267][T12664] __x64_sys_bpf+0x73/0xb0 [ 77.457658][T12664] do_syscall_64+0xfd/0x6a0 [ 77.462148][T12664] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.468027][T12664] RIP: 0033:0x446a29 [ 77.471903][T12664] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.491614][T12664] RSP: 002b:00007fc29cf44db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 77.500005][T12664] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446a29 [ 77.507956][T12664] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 77.515909][T12664] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 77.523863][T12664] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 77.531900][T12664] R13: 00007ffd1d820c2f R14: 00007fc29cf459c0 R15: 0000000000000000 [ 77.539856][T12664] Modules linked in: [ 77.543881][T12664] ---[ end trace ec12a653c0093bf8 ]--- [ 77.549517][T12664] RIP: 0010:dev_map_hash_update_elem+0x3c8/0x6e0 [ 77.555861][T12664] Code: 48 89 f1 48 89 75 c8 48 c1 e9 03 80 3c 11 00 0f 85 d3 02 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 53 10 48 89 d6 48 c1 ee 03 <80> 3c 0e 00 0f 85 97 02 00 00 48 85 c0 48 89 02 74 38 48 89 55 b8 [ 77.575926][T12664] RSP: 0018:ffff8880845c7c30 EFLAGS: 00010046 [ 77.581986][T12664] RAX: 0000000000000000 RBX: ffff8880a02acd80 RCX: dffffc0000000000 [ 77.589976][T12664] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a02acd88 [ 77.597949][T12664] RBP: ffff8880845c7c78 R08: 1ffff1101229ed15 R09: ffffed101229ed16 [ 77.605904][T12664] R10: ffffed101229ed15 R11: ffff8880914f68ab R12: ffff8880914f6780 [ 77.613859][T12664] R13: ffff888090a52000 R14: 0000000000000000 R15: ffff8880914f68a8 [ 77.621809][T12664] FS: 00007fc29cf45700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 77.630726][T12664] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.637304][T12664] CR2: 00007ffd1d820cb0 CR3: 000000008e1e0000 CR4: 00000000001406f0 [ 77.645252][T12664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.653217][T12664] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.661167][T12664] Kernel panic - not syncing: Fatal exception [ 77.668426][T12664] Kernel Offset: disabled [ 77.672740][T12664] Rebooting in 86400 seconds..