[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.762981][ T26] audit: type=1800 audit(1556006608.821:25): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 39.799170][ T26] audit: type=1800 audit(1556006608.831:26): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 39.828618][ T26] audit: type=1800 audit(1556006608.831:27): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.82' (ECDSA) to the list of known hosts. syzkaller login: [ 51.987182][ T7918] IPVS: ftp: loaded support on port[0] = 21 [ 51.998497][ T7917] IPVS: ftp: loaded support on port[0] = 21 [ 52.000350][ T7920] IPVS: ftp: loaded support on port[0] = 21 [ 52.007090][ T7914] IPVS: ftp: loaded support on port[0] = 21 [ 52.017758][ T7921] IPVS: ftp: loaded support on port[0] = 21 [ 52.017922][ T7919] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 69.458668][T19236] kasan: CONFIG_KASAN_INLINE enabled [ 69.464002][T19236] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 69.472076][T19236] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 69.479025][T19236] CPU: 0 PID: 19236 Comm: syz-executor703 Not tainted 5.1.0-rc6 #79 [ 69.487088][T19236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.497137][T19236] RIP: 0010:__lock_acquire+0xbef/0x3fb0 [ 69.502656][T19236] Code: 00 0f 85 a5 1f 00 00 48 81 c4 10 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 21 00 00 49 81 7d 00 20 54 9c 89 0f 84 cf f4 [ 69.523135][T19236] RSP: 0018:ffff88809d7aef58 EFLAGS: 00010002 [ 69.529253][T19236] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 69.537218][T19236] RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001 [ 69.545263][T19236] RBP: ffff88809d7af090 R08: 0000000000000001 R09: 0000000000000001 [ 69.553247][T19236] R10: ffffed1015d05bc7 R11: ffff888089428600 R12: 0000000000000000 [ 69.561215][T19236] R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001 [ 69.569193][T19236] FS: 00007f059044d700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 69.578122][T19236] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.584703][T19236] CR2: 00000000004b6040 CR3: 00000000955ca000 CR4: 00000000001406f0 [ 69.592654][T19236] Call Trace: [ 69.595941][T19236] ? mark_held_locks+0xf0/0xf0 [ 69.600687][T19236] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 69.606389][T19236] lock_acquire+0x16f/0x3f0 [ 69.610901][T19236] ? skb_queue_tail+0x26/0x150 [ 69.615746][T19236] _raw_spin_lock_irqsave+0x95/0xcd [ 69.620947][T19236] ? skb_queue_tail+0x26/0x150 [ 69.625725][T19236] skb_queue_tail+0x26/0x150 [ 69.630321][T19236] ? rxrpc_input_data+0x2430/0x2430 [ 69.635499][T19236] ? rxrpc_input_data+0x2430/0x2430 [ 69.640674][T19236] rxrpc_input_packet+0x4a0/0x5536 [ 69.645780][T19236] ? __lock_acquire+0x548/0x3fb0 [ 69.650717][T19236] ? __nf_conntrack_find_get+0xe41/0x1970 [ 69.656435][T19236] ? rxrpc_input_data+0x2430/0x2430 [ 69.661619][T19236] ? nf_ct_deliver_cached_events+0x216/0x6e0 [ 69.667582][T19236] ? find_held_lock+0x35/0x130 [ 69.672326][T19236] ? rxrpc_input_data+0x2430/0x2430 [ 69.677518][T19236] udp_queue_rcv_one_skb+0xaf2/0x1780 [ 69.682889][T19236] udp_queue_rcv_skb+0x128/0x730 [ 69.687822][T19236] udp_unicast_rcv_skb.isra.0+0xb9/0x360 [ 69.693433][T19236] __udp4_lib_rcv+0x701/0x2ca0 [ 69.698177][T19236] ? mark_held_locks+0xf0/0xf0 [ 69.703028][T19236] udp_rcv+0x22/0x30 [ 69.706912][T19236] ip_protocol_deliver_rcu+0x60/0x8f0 [ 69.712388][T19236] ? kasan_check_read+0x11/0x20 [ 69.717320][T19236] ? rcu_dynticks_curr_cpu_in_eqs+0x54/0xb0 [ 69.723233][T19236] ip_local_deliver_finish+0x23b/0x390 [ 69.728687][T19236] ip_local_deliver+0x1e9/0x520 [ 69.733521][T19236] ? ip_local_deliver_finish+0x390/0x390 [ 69.739133][T19236] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.745353][T19236] ? ip_protocol_deliver_rcu+0x8f0/0x8f0 [ 69.750963][T19236] ip_rcv_finish+0x1e1/0x300 [ 69.755534][T19236] ip_rcv+0xe8/0x3f0 [ 69.759409][T19236] ? ip_local_deliver+0x520/0x520 [ 69.764413][T19236] ? ip_rcv_finish_core.isra.0+0x1b70/0x1b70 [ 69.770387][T19236] ? mark_held_locks+0xf0/0xf0 [ 69.775147][T19236] ? ip_local_deliver+0x520/0x520 [ 69.780158][T19236] __netif_receive_skb_one_core+0x115/0x1a0 [ 69.787339][T19236] ? __netif_receive_skb_core+0x3040/0x3040 [ 69.793227][T19236] ? lock_acquire+0x16f/0x3f0 [ 69.797896][T19236] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.804123][T19236] __netif_receive_skb+0x2c/0x1c0 [ 69.809151][T19236] netif_receive_skb_internal+0x117/0x660 [ 69.814877][T19236] ? dev_cpu_dead+0x920/0x920 [ 69.819570][T19236] ? eth_gro_receive+0x890/0x890 [ 69.824612][T19236] napi_gro_frags+0xade/0xd10 [ 69.829271][T19236] tun_get_user+0x2f24/0x3fb0 [ 69.833943][T19236] ? tun_build_skb.isra.0+0x1300/0x1300 [ 69.839477][T19236] ? tun_get+0x171/0x290 [ 69.843797][T19236] ? lock_downgrade+0x880/0x880 [ 69.848660][T19236] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.854888][T19236] ? kasan_check_read+0x11/0x20 [ 69.859722][T19236] tun_chr_write_iter+0xbd/0x156 [ 69.864645][T19236] do_iter_readv_writev+0x5e1/0x8e0 [ 69.869829][T19236] ? vfs_dedupe_file_range+0x780/0x780 [ 69.875266][T19236] ? rw_copy_check_uvector+0x2a6/0x330 [ 69.880705][T19236] ? rw_verify_area+0x118/0x360 [ 69.885532][T19236] do_iter_write+0x184/0x610 [ 69.890104][T19236] ? dup_iter+0x260/0x260 [ 69.894437][T19236] ? __fget+0x35a/0x550 [ 69.898588][T19236] vfs_writev+0x1b3/0x2f0 [ 69.902897][T19236] ? vfs_iter_write+0xb0/0xb0 [ 69.907554][T19236] ? ksys_dup3+0x3e0/0x3e0 [ 69.911971][T19236] ? __fdget+0x1b/0x20 [ 69.916037][T19236] ? sockfd_lookup_light+0xcb/0x180 [ 69.922277][T19236] ? __fget_light+0x1a9/0x230 [ 69.927129][T19236] do_writev+0x15e/0x370 [ 69.931357][T19236] ? vfs_writev+0x2f0/0x2f0 [ 69.935844][T19236] ? do_syscall_64+0x26/0x610 [ 69.940499][T19236] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.946580][T19236] ? do_syscall_64+0x26/0x610 [ 69.951269][T19236] __x64_sys_writev+0x75/0xb0 [ 69.955942][T19236] do_syscall_64+0x103/0x610 [ 69.960539][T19236] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.966441][T19236] RIP: 0033:0x447331 [ 69.970326][T19236] Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 07 fc ff c3 48 83 ec 08 e8 fa 2b 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2c 00 00 48 89 d0 48 83 c4 08 48 3d 01 [ 69.989916][T19236] RSP: 002b:00007f059044cd20 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 [ 69.998312][T19236] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000447331 [ 70.006266][T19236] RDX: 0000000000000001 RSI: 00007f059044cd60 RDI: 00000000000000f0 [ 70.014519][T19236] RBP: 00000000006dcc30 R08: 0000000000000100 R09: 0000000000000013 [ 70.022928][T19236] R10: 000000000000214e R11: 0000000000000293 R12: 00000000006dcc3c [ 70.030917][T19236] R13: 00007ffc1282a43f R14: 00007f059044d9c0 R15: 00000000006dcc3c [ 70.038962][T19236] Modules linked in: [ 70.042864][T19236] ---[ end trace c11462c6867cf03a ]--- [ 70.048311][T19236] RIP: 0010:__lock_acquire+0xbef/0x3fb0 [ 70.053858][T19236] Code: 00 0f 85 a5 1f 00 00 48 81 c4 10 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 21 00 00 49 81 7d 00 20 54 9c 89 0f 84 cf f4 [ 70.073445][T19236] RSP: 0018:ffff88809d7aef58 EFLAGS: 00010002 [ 70.079503][T19236] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 70.087463][T19236] RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001 [ 70.095416][T19236] RBP: ffff88809d7af090 R08: 0000000000000001 R09: 0000000000000001 [ 70.103368][T19236] R10: ffffed1015d05bc7 R11: ffff888089428600 R12: 0000000000000000 [ 70.111849][T19236] R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001 [ 70.119828][T19236] FS: 00007f059044d700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 70.129172][T19236] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.135741][T19236] CR2: 00000000004b6040 CR3: 00000000955ca000 CR4: 00000000001406f0 [ 70.143698][T19236] Kernel panic - not syncing: Fatal exception in interrupt [ 70.151647][T19236] Kernel Offset: disabled [ 70.155971][T19236] Rebooting in 86400 seconds..