[ 37.756812] audit: type=1800 audit(1550030054.855:26): pid=7647 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.791977] audit: type=1800 audit(1550030054.865:27): pid=7647 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.818940] audit: type=1800 audit(1550030054.865:28): pid=7647 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. [ 38.744472] audit: type=1800 audit(1550030055.865:29): pid=7647 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 45.945016] kasan: CONFIG_KASAN_INLINE enabled [ 45.949619] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 45.956959] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 45.963187] CPU: 0 PID: 7798 Comm: syz-executor957 Not tainted 5.0.0-rc5+ #60 [ 45.970450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.979794] RIP: 0010:__lock_acquire+0x8df/0x4700 [ 45.984615] Code: 28 00 00 00 0f 85 35 27 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 27 00 00 49 81 3c 24 20 45 9a 89 0f 84 03 f8 [ 46.003496] RSP: 0018:ffff888090437180 EFLAGS: 00010006 [ 46.008836] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 46.016085] RDX: 000000000000000c RSI: 0000000000000000 RDI: 0000000000000060 [ 46.023328] RBP: ffff888090437350 R08: 0000000000000001 R09: 0000000000000001 [ 46.030579] R10: ffff888090437570 R11: 0000000000000001 R12: 0000000000000060 [ 46.038869] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888093f3a100 [ 46.046117] FS: 0000000000bdf880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 46.054318] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.060218] CR2: 0000000020000080 CR3: 00000000929f0000 CR4: 00000000001406f0 [ 46.067470] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.074717] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.081963] Call Trace: [ 46.084534] ? mark_held_locks+0x100/0x100 [ 46.088763] ? is_bpf_text_address+0xac/0x170 [ 46.093241] ? mark_held_locks+0x100/0x100 [ 46.097460] ? depot_save_stack+0x1de/0x460 [ 46.101763] ? __lock_acquire+0x53b/0x4700 [ 46.105975] ? __lock_is_held+0xb6/0x140 [ 46.110016] ? tc_ctl_chain+0x42f/0x11a0 [ 46.114085] lock_acquire+0x16f/0x3f0 [ 46.117868] ? tc_ctl_chain+0x42f/0x11a0 [ 46.121911] ? tc_ctl_chain+0x42f/0x11a0 [ 46.125952] __mutex_lock+0xf7/0x1310 [ 46.129760] ? tc_ctl_chain+0x42f/0x11a0 [ 46.133829] ? tcf_block_refcnt_get+0x22d/0x3e0 [ 46.138479] ? tc_ctl_chain+0x42f/0x11a0 [ 46.142521] ? tcf_block_refcnt_get+0x22d/0x3e0 [ 46.147169] ? mutex_trylock+0x1e0/0x1e0 [ 46.151207] ? lock_downgrade+0x810/0x810 [ 46.155342] ? kasan_check_read+0x11/0x20 [ 46.159509] ? tcf_block_refcnt_get+0x254/0x3e0 [ 46.164156] mutex_lock_nested+0x16/0x20 [ 46.168196] ? mutex_lock_nested+0x16/0x20 [ 46.172410] tc_ctl_chain+0x42f/0x11a0 [ 46.176284] ? rtnetlink_rcv_msg+0x40a/0xb00 [ 46.180671] ? tcf_block_release+0xa0/0xa0 [ 46.184888] ? refcount_dec_and_test_checked+0x1b/0x20 [ 46.190141] ? mutex_trylock+0x1e0/0x1e0 [ 46.194192] ? find_held_lock+0x35/0x130 [ 46.198237] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.203755] ? tcf_block_release+0xa0/0xa0 [ 46.207971] rtnetlink_rcv_msg+0x465/0xb00 [ 46.212189] ? rtnetlink_put_metrics+0x560/0x560 [ 46.216925] ? netlink_deliver_tap+0x22d/0xbf0 [ 46.221485] ? find_held_lock+0x35/0x130 [ 46.225532] netlink_rcv_skb+0x17a/0x460 [ 46.229580] ? rtnetlink_put_metrics+0x560/0x560 [ 46.234315] ? netlink_ack+0xb50/0xb50 [ 46.238191] ? kasan_check_read+0x11/0x20 [ 46.242319] ? netlink_deliver_tap+0x254/0xbf0 [ 46.246888] rtnetlink_rcv+0x1d/0x30 [ 46.250579] netlink_unicast+0x536/0x720 [ 46.254630] ? netlink_attachskb+0x770/0x770 [ 46.259055] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 46.264054] ? __check_object_size+0x3d/0x42f [ 46.268531] netlink_sendmsg+0x8ae/0xd70 [ 46.272592] ? netlink_unicast+0x720/0x720 [ 46.276808] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 46.281634] ? apparmor_socket_sendmsg+0x2a/0x30 [ 46.286374] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.291910] ? security_socket_sendmsg+0x93/0xc0 [ 46.296649] ? netlink_unicast+0x720/0x720 [ 46.300864] sock_sendmsg+0xdd/0x130 [ 46.304556] ___sys_sendmsg+0x806/0x930 [ 46.308512] ? copy_msghdr_from_user+0x430/0x430 [ 46.313248] ? _raw_spin_unlock+0x2d/0x50 [ 46.317382] ? __thp_get_unmapped_area+0x190/0x190 [ 46.322293] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.327812] ? __handle_mm_fault+0x7cd/0x3f20 [ 46.332288] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.338012] ? __fget_light+0x1a9/0x230 [ 46.341981] ? __fdget+0x1b/0x20 [ 46.345337] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 46.350856] __sys_sendmsg+0x105/0x1d0 [ 46.354738] ? __ia32_sys_shutdown+0x80/0x80 [ 46.359148] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 46.363905] ? do_syscall_64+0x26/0x610 [ 46.367878] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.373222] ? do_syscall_64+0x26/0x610 [ 46.377192] __x64_sys_sendmsg+0x78/0xb0 [ 46.381231] do_syscall_64+0x103/0x610 [ 46.385096] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 46.390265] RIP: 0033:0x4400d9 [ 46.393440] 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 [ 46.412320] RSP: 002b:00007fffcbc2e0a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 46.420012] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400d9 [ 46.427257] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 [ 46.434505] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 46.441750] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401960 [ 46.449000] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000 [ 46.456249] Modules linked in: [ 46.459426] ---[ end trace 9f4ecc37cc2cf4a0 ]--- [ 46.464168] RIP: 0010:__lock_acquire+0x8df/0x4700 [ 46.468990] Code: 28 00 00 00 0f 85 35 27 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 27 00 00 49 81 3c 24 20 45 9a 89 0f 84 03 f8 [ 46.487874] RSP: 0018:ffff888090437180 EFLAGS: 00010006 [ 46.493215] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 46.500476] RDX: 000000000000000c RSI: 0000000000000000 RDI: 0000000000000060 [ 46.507726] RBP: ffff888090437350 R08: 0000000000000001 R09: 0000000000000001 [ 46.514971] R10: ffff888090437570 R11: 0000000000000001 R12: 0000000000000060 [ 46.522219] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888093f3a100 [ 46.529471] FS: 0000000000bdf880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 46.537677] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.543535] CR2: 0000000020000080 CR3: 00000000929f0000 CR4: 00000000001406f0 [ 46.550784] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.558035] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.565282] Kernel panic - not syncing: Fatal exception [ 46.571615] Kernel Offset: disabled [ 46.575231] Rebooting in 86400 seconds..