[ 36.157500][ T27] audit: type=1800 audit(1551833233.510:27): pid=7582 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 36.187640][ T27] audit: type=1800 audit(1551833233.510:28): pid=7582 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. [ 37.068980][ T27] audit: type=1800 audit(1551833234.480:29): pid=7582 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 37.089353][ T27] audit: type=1800 audit(1551833234.480:30): pid=7582 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.160' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.516610][ T7733] kasan: CONFIG_KASAN_INLINE enabled [ 46.521986][ T7733] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.530444][ T7733] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.537378][ T7733] CPU: 1 PID: 7733 Comm: syz-executor478 Not tainted 5.0.0-next-20190305 #3 [ 46.546023][ T7733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.556058][ T7733] RIP: 0010:sctp_sched_rr_dequeue+0xd3/0x170 [ 46.562015][ T7733] Code: ea 03 80 3c 02 00 0f 85 a2 00 00 00 48 8b 5b 08 e8 f2 33 e6 fa 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 53 4c 8b 6b 30 4c 89 e7 49 83 ed 18 4c 89 ee e8 04 [ 46.581592][ T7733] RSP: 0018:ffff88808c657030 EFLAGS: 00010206 [ 46.587635][ T7733] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff86829fbf [ 46.595579][ T7733] RDX: 0000000000000006 RSI: ffffffff868a8e4e RDI: 0000000000000030 [ 46.603527][ T7733] RBP: ffff88808c657048 R08: ffff8880866a6040 R09: 0000000000000002 [ 46.611469][ T7733] R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff88808dddd0a0 [ 46.619415][ T7733] R13: ffff88808dddc980 R14: dffffc0000000000 R15: ffff88808c657188 [ 46.627377][ T7733] FS: 0000000002034880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 46.636292][ T7733] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.642851][ T7733] CR2: 0000000020000080 CR3: 00000000a80bf000 CR4: 00000000001406e0 [ 46.650797][ T7733] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.658742][ T7733] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.666685][ T7733] Call Trace: [ 46.669951][ T7733] sctp_outq_flush+0xba2/0x2780 [ 46.674889][ T7733] ? sctp_chunkify+0x4b/0x290 [ 46.679543][ T7733] ? __sctp_outq_teardown+0xc60/0xc60 [ 46.684892][ T7733] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 46.691108][ T7733] ? sctp_outq_tail+0x68c/0x930 [ 46.695933][ T7733] sctp_outq_uncork+0x6c/0x80 [ 46.700587][ T7733] sctp_do_sm+0x559/0x53e0 [ 46.704986][ T7733] ? ___sys_sendmsg+0x806/0x930 [ 46.709809][ T7733] ? __sys_sendmsg+0x105/0x1d0 [ 46.714553][ T7733] ? sctp_do_8_2_transport_strike.isra.0+0x940/0x940 [ 46.721207][ T7733] ? lock_downgrade+0x880/0x880 [ 46.726052][ T7733] ? sctp_assoc_bh_rcv+0x2fc/0x660 [ 46.731138][ T7733] ? find_held_lock+0x35/0x130 [ 46.735875][ T7733] ? sctp_assoc_bh_rcv+0x2fc/0x660 [ 46.740965][ T7733] ? trace_hardirqs_on+0x67/0x230 [ 46.745963][ T7733] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 46.751652][ T7733] ? ktime_get+0x208/0x300 [ 46.756044][ T7733] sctp_assoc_bh_rcv+0x343/0x660 [ 46.760958][ T7733] sctp_inq_push+0x1ea/0x290 [ 46.765520][ T7733] sctp_backlog_rcv+0x196/0xbe0 [ 46.770343][ T7733] ? __local_bh_enable_ip+0x15a/0x270 [ 46.775691][ T7733] ? _raw_spin_unlock_bh+0x31/0x40 [ 46.780774][ T7733] ? __local_bh_enable_ip+0x15a/0x270 [ 46.786137][ T7733] ? sctp_hash_obj+0x5e0/0x5e0 [ 46.790873][ T7733] ? __release_sock+0xca/0x3a0 [ 46.795712][ T7733] ? __local_bh_enable_ip+0x15a/0x270 [ 46.801058][ T7733] __release_sock+0x12e/0x3a0 [ 46.805708][ T7733] release_sock+0x59/0x1c0 [ 46.810100][ T7733] sctp_wait_for_connect+0x316/0x540 [ 46.815363][ T7733] ? sctp_get_port+0x180/0x180 [ 46.820101][ T7733] ? finish_wait+0x260/0x260 [ 46.824664][ T7733] ? sctp_datamsg_put+0x36/0x4d0 [ 46.829574][ T7733] ? sctp_primitive_SEND+0xa0/0xd0 [ 46.834677][ T7733] sctp_sendmsg_to_asoc+0x13e3/0x17b0 [ 46.840040][ T7733] ? sctp_clear_owner_w+0x120/0x120 [ 46.845209][ T7733] ? sctp_autobind+0x1f0/0x1f0 [ 46.849944][ T7733] ? lock_downgrade+0x880/0x880 [ 46.854767][ T7733] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.861001][ T7733] ? kasan_check_read+0x11/0x20 [ 46.865867][ T7733] sctp_sendmsg+0xda7/0x1800 [ 46.870462][ T7733] ? sctp_id2assoc+0x2c0/0x2c0 [ 46.875199][ T7733] ? __might_sleep+0x95/0x190 [ 46.879855][ T7733] ? aa_sk_perm+0x288/0x880 [ 46.884333][ T7733] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 46.889856][ T7733] inet_sendmsg+0x147/0x5d0 [ 46.894358][ T7733] ? ipip_gro_receive+0x100/0x100 [ 46.899360][ T7733] sock_sendmsg+0xdd/0x130 [ 46.903748][ T7733] ___sys_sendmsg+0x806/0x930 [ 46.908402][ T7733] ? copy_msghdr_from_user+0x430/0x430 [ 46.913833][ T7733] ? _raw_spin_unlock_bh+0x31/0x40 [ 46.918923][ T7733] ? release_sock+0x158/0x1c0 [ 46.923573][ T7733] ? sctp_setsockopt+0x165/0x68a0 [ 46.928578][ T7733] ? sctp_setsockopt_paddr_thresholds+0x540/0x540 [ 46.934973][ T7733] ? _raw_spin_unlock_bh+0x31/0x40 [ 46.940061][ T7733] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 46.945670][ T7733] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.951883][ T7733] ? __fget_light+0x1a9/0x230 [ 46.956536][ T7733] ? __fdget+0x1b/0x20 [ 46.960578][ T7733] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 46.966794][ T7733] __sys_sendmsg+0x105/0x1d0 [ 46.971372][ T7733] ? __ia32_sys_shutdown+0x80/0x80 [ 46.976477][ T7733] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 46.981929][ T7733] ? do_syscall_64+0x26/0x610 [ 46.986610][ T7733] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.992657][ T7733] ? do_syscall_64+0x26/0x610 [ 46.997311][ T7733] __x64_sys_sendmsg+0x78/0xb0 [ 47.002047][ T7733] do_syscall_64+0x103/0x610 [ 47.006613][ T7733] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.012480][ T7733] RIP: 0033:0x440159 [ 47.016348][ T7733] 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 [ 47.035944][ T7733] RSP: 002b:00007ffe38a839a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 47.044330][ T7733] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440159 [ 47.052273][ T7733] RDX: 0000000000000000 RSI: 000000002001afc8 RDI: 0000000000000003 [ 47.060215][ T7733] RBP: 00000000006ca018 R08: 0000000000000002 R09: 00000000004002c8 [ 47.068164][ T7733] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004019e0 [ 47.076108][ T7733] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000 [ 47.084060][ T7733] Modules linked in: [ 47.088194][ T7733] ---[ end trace c755f617be338bb6 ]--- [ 47.093657][ T7733] RIP: 0010:sctp_sched_rr_dequeue+0xd3/0x170 [ 47.099697][ T7733] Code: ea 03 80 3c 02 00 0f 85 a2 00 00 00 48 8b 5b 08 e8 f2 33 e6 fa 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 53 4c 8b 6b 30 4c 89 e7 49 83 ed 18 4c 89 ee e8 04 [ 47.119338][ T7733] RSP: 0018:ffff88808c657030 EFLAGS: 00010206 [ 47.125419][ T7733] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff86829fbf [ 47.133381][ T7733] RDX: 0000000000000006 RSI: ffffffff868a8e4e RDI: 0000000000000030 [ 47.141374][ T7733] RBP: ffff88808c657048 R08: ffff8880866a6040 R09: 0000000000000002 [ 47.149430][ T7733] R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff88808dddd0a0 [ 47.157558][ T7733] R13: ffff88808dddc980 R14: dffffc0000000000 R15: ffff88808c657188 [ 47.165582][ T7733] FS: 0000000002034880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.174555][ T7733] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.181128][ T7733] CR2: ffffffffff600400 CR3: 00000000a80bf000 CR4: 00000000001406e0 [ 47.189169][ T7733] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.197182][ T7733] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.205164][ T7733] Kernel panic - not syncing: Fatal exception [ 47.211645][ T7733] Kernel Offset: disabled [ 47.215962][ T7733] Rebooting in 86400 seconds..