[ 44.985902][ T26] audit: type=1800 audit(1556019714.024:25): pid=7591 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.021502][ T26] audit: type=1800 audit(1556019714.024:26): pid=7591 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.056449][ T26] audit: type=1800 audit(1556019714.024:27): pid=7591 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 45.078874][ T26] audit: type=1800 audit(1556019714.024:28): pid=7591 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.12' (ECDSA) to the list of known hosts. syzkaller login: [ 78.735091][ T7751] IPVS: ftp: loaded support on port[0] = 21 [ 78.735098][ T7747] IPVS: ftp: loaded support on port[0] = 21 [ 78.749103][ T7753] IPVS: ftp: loaded support on port[0] = 21 [ 78.754650][ T7750] IPVS: ftp: loaded support on port[0] = 21 [ 78.764976][ T7754] IPVS: ftp: loaded support on port[0] = 21 [ 78.768146][ T7752] 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 [ 80.990040][ T9272] kasan: CONFIG_KASAN_INLINE enabled [ 80.995371][ T9272] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 81.003711][ T9272] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 81.010642][ T9272] CPU: 0 PID: 9272 Comm: syz-executor830 Not tainted 5.1.0-rc6 #79 [ 81.018524][ T9272] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.028758][ T9272] RIP: 0010:__lock_acquire+0xbef/0x3fb0 executing program executing program executing program executing program executing program [ 81.034311][ T9272] 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 [ 81.054068][ T9272] RSP: 0018:ffff88808b386f58 EFLAGS: 00010002 [ 81.060147][ T9272] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 81.068241][ T9272] RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001 [ 81.076239][ T9272] RBP: ffff88808b387090 R08: 0000000000000001 R09: 0000000000000001 executing program executing program executing program executing program executing program executing program executing program [ 81.084368][ T9272] R10: ffffed1015d05bc7 R11: ffff888085be2700 R12: 0000000000000000 [ 81.092350][ T9272] R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001 [ 81.100366][ T9272] FS: 00007f3ece3de700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.109299][ T9272] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.115868][ T9272] CR2: 0000000020359fdf CR3: 000000008d64f000 CR4: 00000000001406f0 [ 81.123843][ T9272] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.132776][ T9272] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.140749][ T9272] Call Trace: [ 81.144051][ T9272] ? mark_held_locks+0xf0/0xf0 [ 81.149025][ T9272] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 81.154866][ T9272] lock_acquire+0x16f/0x3f0 [ 81.159570][ T9272] ? skb_queue_tail+0x26/0x150 [ 81.164516][ T9272] _raw_spin_lock_irqsave+0x95/0xcd [ 81.169874][ T9272] ? skb_queue_tail+0x26/0x150 [ 81.174854][ T9272] skb_queue_tail+0x26/0x150 [ 81.179590][ T9272] ? rxrpc_input_data+0x2430/0x2430 [ 81.184891][ T9272] ? rxrpc_input_data+0x2430/0x2430 [ 81.190103][ T9272] rxrpc_input_packet+0x4a0/0x5536 [ 81.195347][ T9272] ? __lock_acquire+0x548/0x3fb0 [ 81.200348][ T9272] ? __nf_conntrack_find_get+0xe41/0x1970 [ 81.206177][ T9272] ? rxrpc_input_data+0x2430/0x2430 [ 81.211416][ T9272] ? nf_ct_deliver_cached_events+0x216/0x6e0 [ 81.217411][ T9272] ? find_held_lock+0x35/0x130 [ 81.222188][ T9272] ? rxrpc_input_data+0x2430/0x2430 [ 81.227426][ T9272] udp_queue_rcv_one_skb+0xaf2/0x1780 [ 81.232833][ T9272] udp_queue_rcv_skb+0x128/0x730 [ 81.237789][ T9272] udp_unicast_rcv_skb.isra.0+0xb9/0x360 [ 81.243455][ T9272] __udp4_lib_rcv+0x701/0x2ca0 [ 81.248317][ T9272] ? mark_held_locks+0xf0/0xf0 [ 81.253182][ T9272] udp_rcv+0x22/0x30 [ 81.257106][ T9272] ip_protocol_deliver_rcu+0x60/0x8f0 [ 81.262516][ T9272] ? kasan_check_read+0x11/0x20 [ 81.267386][ T9272] ? rcu_dynticks_curr_cpu_in_eqs+0x54/0xb0 [ 81.273302][ T9272] ip_local_deliver_finish+0x23b/0x390 [ 81.278773][ T9272] ip_local_deliver+0x1e9/0x520 [ 81.283630][ T9272] ? ip_local_deliver_finish+0x390/0x390 [ 81.289288][ T9272] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.295568][ T9272] ? ip_protocol_deliver_rcu+0x8f0/0x8f0 [ 81.301219][ T9272] ip_rcv_finish+0x1e1/0x300 [ 81.305827][ T9272] ip_rcv+0xe8/0x3f0 [ 81.309728][ T9272] ? ip_local_deliver+0x520/0x520 [ 81.314769][ T9272] ? ip_rcv_finish_core.isra.0+0x1b70/0x1b70 [ 81.320758][ T9272] ? mark_held_locks+0xf0/0xf0 [ 81.325548][ T9272] ? ip_local_deliver+0x520/0x520 [ 81.330599][ T9272] __netif_receive_skb_one_core+0x115/0x1a0 [ 81.336761][ T9272] ? __netif_receive_skb_core+0x3040/0x3040 [ 81.342653][ T9272] ? lock_acquire+0x16f/0x3f0 [ 81.347323][ T9272] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.353595][ T9272] __netif_receive_skb+0x2c/0x1c0 [ 81.358636][ T9272] netif_receive_skb_internal+0x117/0x660 [ 81.364361][ T9272] ? dev_cpu_dead+0x920/0x920 [ 81.369037][ T9272] ? eth_gro_receive+0x890/0x890 [ 81.374106][ T9272] napi_gro_frags+0xade/0xd10 [ 81.378821][ T9272] tun_get_user+0x2f24/0x3fb0 [ 81.383515][ T9272] ? tun_build_skb.isra.0+0x1300/0x1300 [ 81.389170][ T9272] ? tun_get+0x171/0x290 [ 81.393410][ T9272] ? lock_downgrade+0x880/0x880 [ 81.398272][ T9272] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.404570][ T9272] ? kasan_check_read+0x11/0x20 [ 81.409438][ T9272] tun_chr_write_iter+0xbd/0x156 [ 81.414405][ T9272] do_iter_readv_writev+0x5e1/0x8e0 [ 81.419615][ T9272] ? vfs_dedupe_file_range+0x780/0x780 [ 81.425083][ T9272] ? rw_copy_check_uvector+0x2a6/0x330 [ 81.430565][ T9272] ? rw_verify_area+0x118/0x360 [ 81.435428][ T9272] do_iter_write+0x184/0x610 [ 81.440059][ T9272] ? dup_iter+0x260/0x260 [ 81.444406][ T9272] ? __fget+0x35a/0x550 [ 81.448607][ T9272] vfs_writev+0x1b3/0x2f0 [ 81.452949][ T9272] ? vfs_iter_write+0xb0/0xb0 [ 81.457692][ T9272] ? ksys_dup3+0x3e0/0x3e0 [ 81.462119][ T9272] ? __fdget+0x1b/0x20 [ 81.466196][ T9272] ? sockfd_lookup_light+0xcb/0x180 [ 81.471680][ T9272] ? __fget_light+0x1a9/0x230 [ 81.476375][ T9272] do_writev+0x15e/0x370 [ 81.480634][ T9272] ? vfs_writev+0x2f0/0x2f0 [ 81.485174][ T9272] ? do_syscall_64+0x26/0x610 [ 81.489874][ T9272] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.495963][ T9272] ? do_syscall_64+0x26/0x610 [ 81.500663][ T9272] __x64_sys_writev+0x75/0xb0 [ 81.505343][ T9272] do_syscall_64+0x103/0x610 [ 81.509940][ T9272] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.516159][ T9272] RIP: 0033:0x447341 [ 81.522237][ T9272] 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 [ 81.543419][ T9272] RSP: 002b:00007f3ece3ddd20 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 [ 81.551926][ T9272] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000447341 [ 81.559909][ T9272] RDX: 0000000000000001 RSI: 00007f3ece3ddd60 RDI: 00000000000000f0 [ 81.567884][ T9272] RBP: 00000000006dcc30 R08: 0000000000000100 R09: 0000000000000013 [ 81.575965][ T9272] R10: 000000000000214e R11: 0000000000000293 R12: 00000000006dcc3c [ 81.583951][ T9272] R13: 00007ffdbd384faf R14: 00007f3ece3de9c0 R15: 00000000006dcc3c [ 81.591924][ T9272] Modules linked in: [ 81.595831][ T9272] ---[ end trace 29e1b94a07dd2e5f ]--- [ 81.601329][ T9272] RIP: 0010:__lock_acquire+0xbef/0x3fb0 [ 81.606977][ T9272] 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 [ 81.626699][ T9272] RSP: 0018:ffff88808b386f58 EFLAGS: 00010002 [ 81.632752][ T9272] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 81.640753][ T9272] RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001 [ 81.648731][ T9272] RBP: ffff88808b387090 R08: 0000000000000001 R09: 0000000000000001 [ 81.656705][ T9272] R10: ffffed1015d05bc7 R11: ffff888085be2700 R12: 0000000000000000 [ 81.666003][ T9272] R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001 [ 81.673975][ T9272] FS: 00007f3ece3de700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.682991][ T9272] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.689578][ T9272] CR2: 0000000020359fdf CR3: 000000008d64f000 CR4: 00000000001406f0 [ 81.697568][ T9272] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.705579][ T9272] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.713550][ T9272] Kernel panic - not syncing: Fatal exception in interrupt [ 81.721459][ T9272] Kernel Offset: disabled [ 81.725781][ T9272] Rebooting in 86400 seconds..