[ 43.615605][ T26] audit: type=1800 audit(1556010440.725:30): pid=8086 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 47.410203][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 47.410218][ T26] audit: type=1400 audit(1556010444.555:35): avc: denied { map } for pid=8258 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.74' (ECDSA) to the list of known hosts. [ 54.072715][ T26] audit: type=1400 audit(1556010451.215:36): avc: denied { map } for pid=8270 comm="syz-executor004" path="/root/syz-executor004981305" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 54.095075][ T8279] IPVS: ftp: loaded support on port[0] = 21 [ 54.108788][ T8278] IPVS: ftp: loaded support on port[0] = 21 [ 54.110624][ T8277] IPVS: ftp: loaded support on port[0] = 21 [ 54.124948][ T8280] IPVS: ftp: loaded support on port[0] = 21 [ 54.127537][ T8282] IPVS: ftp: loaded support on port[0] = 21 [ 54.137881][ T8281] 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 [ 58.900668][T11285] kasan: CONFIG_KASAN_INLINE enabled [ 58.905997][T11285] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 58.914057][T11285] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 58.920976][T11285] CPU: 0 PID: 11285 Comm: syz-executor004 Not tainted 5.1.0-rc6 #78 [ 58.928939][T11285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.938987][T11285] RIP: 0010:__lock_acquire+0xbef/0x3fb0 [ 58.944513][T11285] 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 [ 58.964117][T11285] RSP: 0018:ffff8880a7b5ef58 EFLAGS: 00010002 [ 58.970167][T11285] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 58.978136][T11285] RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001 [ 58.986095][T11285] RBP: ffff8880a7b5f090 R08: 0000000000000001 R09: 0000000000000001 [ 58.994050][T11285] R10: ffffed1015d05bc7 R11: ffff8880a08bc180 R12: 0000000000000000 [ 59.002004][T11285] R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001 [ 59.010099][T11285] FS: 00007fc0a255e700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 59.019023][T11285] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.025590][T11285] CR2: 00007ffc8c9e96c0 CR3: 000000008019f000 CR4: 00000000001406f0 [ 59.033545][T11285] Call Trace: [ 59.036824][T11285] ? mark_held_locks+0xf0/0xf0 [ 59.041602][T11285] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 59.047312][T11285] lock_acquire+0x16f/0x3f0 [ 59.051803][T11285] ? skb_queue_tail+0x26/0x150 [ 59.056561][T11285] _raw_spin_lock_irqsave+0x95/0xcd [ 59.061739][T11285] ? skb_queue_tail+0x26/0x150 [ 59.066484][T11285] skb_queue_tail+0x26/0x150 [ 59.071057][T11285] ? rxrpc_input_data+0x2430/0x2430 [ 59.076239][T11285] ? rxrpc_input_data+0x2430/0x2430 [ 59.081419][T11285] rxrpc_input_packet+0x4a0/0x5536 [ 59.086523][T11285] ? __lock_acquire+0x548/0x3fb0 [ 59.091445][T11285] ? __nf_conntrack_find_get+0xe41/0x1970 [ 59.097157][T11285] ? rxrpc_input_data+0x2430/0x2430 [ 59.102341][T11285] ? nf_ct_deliver_cached_events+0x216/0x6e0 [ 59.108305][T11285] ? find_held_lock+0x35/0x130 [ 59.113052][T11285] ? rxrpc_input_data+0x2430/0x2430 [ 59.118231][T11285] udp_queue_rcv_one_skb+0xaf2/0x1780 [ 59.123589][T11285] udp_queue_rcv_skb+0x128/0x730 [ 59.128531][T11285] udp_unicast_rcv_skb.isra.0+0xb9/0x360 [ 59.134147][T11285] __udp4_lib_rcv+0x701/0x2ca0 [ 59.138892][T11285] ? mark_held_locks+0xf0/0xf0 [ 59.143648][T11285] udp_rcv+0x22/0x30 [ 59.147526][T11285] ip_protocol_deliver_rcu+0x60/0x8f0 [ 59.152887][T11285] ? kasan_check_read+0x11/0x20 [ 59.158082][T11285] ? rcu_dynticks_curr_cpu_in_eqs+0x54/0xb0 [ 59.163963][T11285] ip_local_deliver_finish+0x23b/0x390 [ 59.169405][T11285] ip_local_deliver+0x1e9/0x520 [ 59.174236][T11285] ? ip_local_deliver_finish+0x390/0x390 [ 59.179854][T11285] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.186139][T11285] ? ip_protocol_deliver_rcu+0x8f0/0x8f0 [ 59.191764][T11285] ip_rcv_finish+0x1e1/0x300 [ 59.196335][T11285] ip_rcv+0xe8/0x3f0 [ 59.200219][T11285] ? ip_local_deliver+0x520/0x520 [ 59.205226][T11285] ? ip_rcv_finish_core.isra.0+0x1b70/0x1b70 [ 59.211190][T11285] ? mark_held_locks+0xf0/0xf0 [ 59.215947][T11285] ? ip_local_deliver+0x520/0x520 [ 59.220984][T11285] __netif_receive_skb_one_core+0x115/0x1a0 [ 59.226919][T11285] ? __netif_receive_skb_core+0x3040/0x3040 [ 59.232817][T11285] ? lock_acquire+0x16f/0x3f0 [ 59.237476][T11285] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.243698][T11285] __netif_receive_skb+0x2c/0x1c0 [ 59.248706][T11285] netif_receive_skb_internal+0x117/0x660 [ 59.254410][T11285] ? dev_cpu_dead+0x920/0x920 [ 59.259075][T11285] ? eth_gro_receive+0x890/0x890 [ 59.264081][T11285] napi_gro_frags+0xade/0xd10 [ 59.268742][T11285] tun_get_user+0x2f24/0x3fb0 [ 59.273401][T11285] ? tun_build_skb.isra.0+0x1300/0x1300 [ 59.278924][T11285] ? tun_get+0x171/0x290 [ 59.283148][T11285] ? lock_downgrade+0x880/0x880 [ 59.288002][T11285] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.294323][T11285] ? kasan_check_read+0x11/0x20 [ 59.299194][T11285] tun_chr_write_iter+0xbd/0x156 [ 59.304143][T11285] do_iter_readv_writev+0x5e1/0x8e0 [ 59.309339][T11285] ? vfs_dedupe_file_range+0x780/0x780 [ 59.314799][T11285] ? rw_verify_area+0x118/0x360 [ 59.319648][T11285] do_iter_write+0x184/0x610 [ 59.324220][T11285] ? dup_iter+0x260/0x260 [ 59.328549][T11285] ? __fget+0x35a/0x550 [ 59.332686][T11285] vfs_writev+0x1b3/0x2f0 [ 59.336994][T11285] ? vfs_iter_write+0xb0/0xb0 [ 59.341654][T11285] ? ksys_dup3+0x3e0/0x3e0 [ 59.346048][T11285] ? __fdget+0x1b/0x20 [ 59.350106][T11285] ? sockfd_lookup_light+0xcb/0x180 [ 59.355288][T11285] ? __fget_light+0x1a9/0x230 [ 59.360071][T11285] do_writev+0x15e/0x370 [ 59.364320][T11285] ? vfs_writev+0x2f0/0x2f0 [ 59.368809][T11285] ? do_syscall_64+0x26/0x610 [ 59.373471][T11285] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.379517][T11285] ? do_syscall_64+0x26/0x610 [ 59.384179][T11285] __x64_sys_writev+0x75/0xb0 [ 59.388926][T11285] do_syscall_64+0x103/0x610 [ 59.393513][T11285] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.399388][T11285] RIP: 0033:0x447331 [ 59.403260][T11285] 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 [ 59.423097][T11285] RSP: 002b:00007fc0a255dd20 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 [ 59.431490][T11285] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000447331 [ 59.439446][T11285] RDX: 0000000000000001 RSI: 00007fc0a255dd60 RDI: 00000000000000f0 [ 59.447405][T11285] RBP: 00000000006dcc30 R08: 0000000000000100 R09: 0000000000000013 [ 59.455387][T11285] R10: 000000000000214e R11: 0000000000000293 R12: 00000000006dcc3c [ 59.463376][T11285] R13: 00007ffc8c9e961f R14: 00007fc0a255e9c0 R15: 00000000006dcc3c [ 59.471332][T11285] Modules linked in: [ 59.475301][T11285] ---[ end trace 0adac036510aa28a ]--- [ 59.480757][T11285] RIP: 0010:__lock_acquire+0xbef/0x3fb0 [ 59.486298][T11285] 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 [ 59.506680][T11285] RSP: 0018:ffff8880a7b5ef58 EFLAGS: 00010002 [ 59.512751][T11285] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 59.520705][T11285] RDX: 0000000000000026 RSI: 0000000000000000 RDI: 0000000000000001 [ 59.528658][T11285] RBP: ffff8880a7b5f090 R08: 0000000000000001 R09: 0000000000000001 [ 59.536610][T11285] R10: ffffed1015d05bc7 R11: ffff8880a08bc180 R12: 0000000000000000 [ 59.544567][T11285] R13: 0000000000000130 R14: 0000000000000001 R15: 0000000000000001 [ 59.552524][T11285] FS: 00007fc0a255e700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 59.561558][T11285] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.568130][T11285] CR2: 00007ffc8c9e96c0 CR3: 000000008019f000 CR4: 00000000001406f0 [ 59.576086][T11285] Kernel panic - not syncing: Fatal exception in interrupt [ 59.584217][T11285] Kernel Offset: disabled [ 59.588644][T11285] Rebooting in 86400 seconds..