[ 38.164228][ T26] audit: type=1800 audit(1552579925.054:25): pid=7727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 38.199899][ T26] audit: type=1800 audit(1552579925.054:26): pid=7727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.228526][ T26] audit: type=1800 audit(1552579925.064:27): pid=7727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 38.251407][ T26] audit: type=1800 audit(1552579925.064:28): pid=7727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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 '10.128.0.66' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 49.616943][ T7879] kasan: CONFIG_KASAN_INLINE enabled [ 49.622465][ T7879] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.630651][ T7879] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 49.637583][ T7879] CPU: 0 PID: 7879 Comm: syz-executor908 Not tainted 5.0.0-next-20190306 #4 [ 49.646229][ T7879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.656298][ T7879] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 49.662261][ T7879] Code: 0f 84 e1 00 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d [ 49.681845][ T7879] RSP: 0018:ffff8880a607efc8 EFLAGS: 00010247 [ 49.687977][ T7879] RAX: dffffc0000000000 RBX: ffff8880a7a9e090 RCX: ffffffff86825fbf [ 49.695931][ T7879] RDX: 0000000000000000 RSI: ffffffff868a17a0 RDI: ffff8880a7a9e098 [ 49.703891][ T7879] RBP: ffff8880a607efe0 R08: ffff8880a8076180 R09: 0000000000000002 [ 49.711841][ T7879] R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: 0000000000000006 [ 49.719793][ T7879] R13: 0000000100000000 R14: ffff8880a7a9e090 R15: ffff8880a607f188 [ 49.727769][ T7879] FS: 00000000006fb880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 49.736678][ T7879] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.743239][ T7879] CR2: 0000000020000080 CR3: 00000000957a8000 CR4: 00000000001406f0 [ 49.751216][ T7879] Call Trace: [ 49.754489][ T7879] sctp_sched_dequeue_common+0x28/0x340 [ 49.760022][ T7879] sctp_sched_prio_dequeue+0xec/0x1a0 [ 49.765383][ T7879] sctp_outq_flush+0xba2/0x2780 [ 49.770212][ T7879] ? sctp_chunkify+0x4b/0x290 [ 49.774867][ T7879] ? __sctp_outq_teardown+0xc60/0xc60 [ 49.780216][ T7879] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 49.786435][ T7879] ? sctp_outq_tail+0x68c/0x930 [ 49.791272][ T7879] sctp_outq_uncork+0x6c/0x80 [ 49.795925][ T7879] sctp_do_sm+0x559/0x53e0 [ 49.800323][ T7879] ? ___sys_sendmsg+0x806/0x930 [ 49.805153][ T7879] ? __sys_sendmsg+0x105/0x1d0 [ 49.809898][ T7879] ? sctp_do_8_2_transport_strike.isra.0+0x940/0x940 [ 49.816555][ T7879] ? lock_downgrade+0x880/0x880 [ 49.821386][ T7879] ? sctp_assoc_bh_rcv+0x2fc/0x660 [ 49.826476][ T7879] ? find_held_lock+0x35/0x130 [ 49.831241][ T7879] ? sctp_assoc_bh_rcv+0x2fc/0x660 [ 49.836338][ T7879] ? trace_hardirqs_on+0x67/0x230 [ 49.841348][ T7879] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 49.847039][ T7879] ? ktime_get+0x208/0x300 [ 49.851436][ T7879] sctp_assoc_bh_rcv+0x343/0x660 [ 49.856354][ T7879] sctp_inq_push+0x1ea/0x290 [ 49.860922][ T7879] sctp_backlog_rcv+0x196/0xbe0 [ 49.865752][ T7879] ? __local_bh_enable_ip+0x15a/0x270 [ 49.871105][ T7879] ? _raw_spin_unlock_bh+0x31/0x40 [ 49.876216][ T7879] ? __local_bh_enable_ip+0x15a/0x270 [ 49.881570][ T7879] ? sctp_hash_obj+0x5e0/0x5e0 [ 49.886310][ T7879] ? __release_sock+0xca/0x3a0 [ 49.891052][ T7879] ? __local_bh_enable_ip+0x15a/0x270 [ 49.896418][ T7879] __release_sock+0x12e/0x3a0 [ 49.901082][ T7879] release_sock+0x59/0x1c0 [ 49.905509][ T7879] sctp_wait_for_connect+0x316/0x540 [ 49.910792][ T7879] ? sctp_get_port+0x180/0x180 [ 49.915537][ T7879] ? finish_wait+0x260/0x260 [ 49.920115][ T7879] ? sctp_datamsg_put+0x36/0x4d0 [ 49.925053][ T7879] ? sctp_primitive_SEND+0xa0/0xd0 [ 49.930160][ T7879] sctp_sendmsg_to_asoc+0x13e3/0x17b0 [ 49.935544][ T7879] ? sctp_clear_owner_w+0x120/0x120 [ 49.940721][ T7879] ? sctp_autobind+0x1f0/0x1f0 [ 49.945474][ T7879] ? lock_downgrade+0x880/0x880 [ 49.950305][ T7879] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.956528][ T7879] ? kasan_check_read+0x11/0x20 [ 49.961361][ T7879] sctp_sendmsg+0xda7/0x1800 [ 49.965932][ T7879] ? sctp_id2assoc+0x2c0/0x2c0 [ 49.970696][ T7879] ? __might_sleep+0x95/0x190 [ 49.975361][ T7879] ? aa_sk_perm+0x288/0x880 [ 49.979860][ T7879] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 49.985390][ T7879] inet_sendmsg+0x147/0x5d0 [ 49.989870][ T7879] ? ipip_gro_receive+0x100/0x100 [ 49.994872][ T7879] sock_sendmsg+0xdd/0x130 [ 49.999268][ T7879] ___sys_sendmsg+0x806/0x930 [ 50.003924][ T7879] ? copy_msghdr_from_user+0x430/0x430 [ 50.009359][ T7879] ? _raw_spin_unlock_bh+0x31/0x40 [ 50.014447][ T7879] ? release_sock+0x158/0x1c0 [ 50.019099][ T7879] ? sctp_setsockopt+0x165/0x68a0 [ 50.024113][ T7879] ? sctp_setsockopt_paddr_thresholds+0x540/0x540 [ 50.030503][ T7879] ? _raw_spin_unlock_bh+0x31/0x40 [ 50.035595][ T7879] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 50.041223][ T7879] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.047440][ T7879] ? __fget_light+0x1a9/0x230 [ 50.052091][ T7879] ? __fdget+0x1b/0x20 [ 50.056142][ T7879] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 50.062362][ T7879] __sys_sendmsg+0x105/0x1d0 [ 50.066929][ T7879] ? __ia32_sys_shutdown+0x80/0x80 [ 50.072024][ T7879] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.077462][ T7879] ? do_syscall_64+0x26/0x610 [ 50.082124][ T7879] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.088163][ T7879] ? do_syscall_64+0x26/0x610 [ 50.092819][ T7879] __x64_sys_sendmsg+0x78/0xb0 [ 50.097560][ T7879] do_syscall_64+0x103/0x610 [ 50.102158][ T7879] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.108036][ T7879] RIP: 0033:0x4402a9 [ 50.111924][ T7879] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.131511][ T7879] RSP: 002b:00007ffc9db70ba8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 50.140007][ T7879] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402a9 [ 50.147969][ T7879] RDX: 0000000000000000 RSI: 000000002001afc8 RDI: 0000000000000003 [ 50.155922][ T7879] RBP: 00000000006ca018 R08: 0000000000000002 R09: 00000000004002c8 [ 50.163884][ T7879] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000401b30 [ 50.171854][ T7879] R13: 0000000000401bc0 R14: 0000000000000000 R15: 0000000000000000 [ 50.179820][ T7879] Modules linked in: [ 50.184205][ T7879] ---[ end trace bf593bab7c4f01f4 ]--- [ 50.189692][ T7879] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 50.196021][ T7879] Code: 0f 84 e1 00 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d [ 50.215692][ T7879] RSP: 0018:ffff8880a607efc8 EFLAGS: 00010247 [ 50.221834][ T7879] RAX: dffffc0000000000 RBX: ffff8880a7a9e090 RCX: ffffffff86825fbf [ 50.229790][ T7879] RDX: 0000000000000000 RSI: ffffffff868a17a0 RDI: ffff8880a7a9e098 [ 50.237810][ T7879] RBP: ffff8880a607efe0 R08: ffff8880a8076180 R09: 0000000000000002 [ 50.245802][ T7879] R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: 0000000000000006 [ 50.253796][ T7879] R13: 0000000100000000 R14: ffff8880a7a9e090 R15: ffff8880a607f188 [ 50.261784][ T7879] FS: 00000000006fb880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 50.270993][ T7879] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.277571][ T7879] CR2: 0000000020000080 CR3: 00000000957a8000 CR4: 00000000001406f0 [ 50.285558][ T7879] Kernel panic - not syncing: Fatal exception [ 50.292294][ T7879] Kernel Offset: disabled [ 50.296611][ T7879] Rebooting in 86400 seconds..