[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 56.164704][ T26] audit: type=1800 audit(1567907662.789:25): pid=8613 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.209524][ T26] audit: type=1800 audit(1567907662.789:26): pid=8613 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.257793][ T26] audit: type=1800 audit(1567907662.799:27): pid=8613 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 '10.128.0.85' (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 syzkaller login: [ 68.531765][T10210] kasan: CONFIG_KASAN_INLINE enabled [ 68.537256][T10210] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 68.545628][T10210] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 68.552926][T10210] CPU: 1 PID: 10210 Comm: syz-executor910 Not tainted 5.3.0-rc7+ #0 [ 68.561075][T10210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.571256][T10210] RIP: 0010:dev_map_hash_update_elem+0x3c8/0x6e0 executing program executing program executing program executing program executing program executing program [ 68.577719][T10210] 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 [ 68.597311][T10210] RSP: 0018:ffff88808c757c30 EFLAGS: 00010046 [ 68.603367][T10210] RAX: 0000000000000000 RBX: ffff8880a216a980 RCX: dffffc0000000000 [ 68.611518][T10210] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a216a988 [ 68.619758][T10210] RBP: ffff88808c757c78 R08: 0000000000000004 R09: ffffed10118eaf73 executing program executing program executing program executing program executing program executing program executing program executing program [ 68.627740][T10210] R10: ffffed10118eaf72 R11: 0000000000000003 R12: ffff88808c7fb2c0 [ 68.635708][T10210] R13: ffff88808aa98800 R14: 0000000000000000 R15: ffff88808c7fb3e8 [ 68.643779][T10210] FS: 00007fd4c5528700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 68.653075][T10210] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.659665][T10210] CR2: 00007fff47596210 CR3: 000000008b442000 CR4: 00000000001406e0 [ 68.667643][T10210] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.675761][T10210] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.683719][T10210] Call Trace: [ 68.687227][T10210] ? __kasan_check_read+0x11/0x20 [ 68.692273][T10210] ? dev_map_update_elem+0x280/0x280 [ 68.697688][T10210] map_update_elem+0xc82/0x10b0 [ 68.702543][T10210] __do_sys_bpf+0x8b5/0x3350 [ 68.707150][T10210] ? bpf_prog_load+0x1660/0x1660 [ 68.712256][T10210] ? lock_downgrade+0x920/0x920 [ 68.717336][T10210] ? __kasan_check_write+0x14/0x20 [ 68.722633][T10210] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.728909][T10210] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.735249][T10210] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 68.740819][T10210] ? do_syscall_64+0x26/0x6a0 [ 68.745570][T10210] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.751634][T10210] ? do_syscall_64+0x26/0x6a0 [ 68.756326][T10210] __x64_sys_bpf+0x73/0xb0 [ 68.760754][T10210] do_syscall_64+0xfd/0x6a0 [ 68.765282][T10210] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.771181][T10210] RIP: 0033:0x446a29 [ 68.775117][T10210] 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 [ 68.796072][T10210] RSP: 002b:00007fd4c5527db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 68.804636][T10210] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446a29 [ 68.812628][T10210] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 68.820638][T10210] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 68.828615][T10210] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 68.836773][T10210] R13: 00007fff4759618f R14: 00007fd4c55289c0 R15: 0000000000000000 [ 68.844763][T10210] Modules linked in: [ 68.848679][T10210] ---[ end trace 9a6d00abce3fe1c8 ]--- [ 68.854140][T10210] RIP: 0010:dev_map_hash_update_elem+0x3c8/0x6e0 [ 68.860472][T10210] 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 [ 68.880374][T10210] RSP: 0018:ffff88808c757c30 EFLAGS: 00010046 [ 68.886447][T10210] RAX: 0000000000000000 RBX: ffff8880a216a980 RCX: dffffc0000000000 [ 68.894416][T10210] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a216a988 [ 68.902405][T10210] RBP: ffff88808c757c78 R08: 0000000000000004 R09: ffffed10118eaf73 [ 68.910379][T10210] R10: ffffed10118eaf72 R11: 0000000000000003 R12: ffff88808c7fb2c0 [ 68.918376][T10210] R13: ffff88808aa98800 R14: 0000000000000000 R15: ffff88808c7fb3e8 [ 68.926433][T10210] FS: 00007fd4c5528700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 68.935360][T10210] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.942049][T10210] CR2: 00007fff47596210 CR3: 000000008b442000 CR4: 00000000001406e0 [ 68.950070][T10210] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.958062][T10210] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.966209][T10210] Kernel panic - not syncing: Fatal exception [ 68.974066][T10210] Kernel Offset: disabled [ 68.978398][T10210] Rebooting in 86400 seconds..