[ 37.661500][ T27] audit: type=1800 audit(1553056021.681:26): pid=7602 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.682922][ T27] audit: type=1800 audit(1553056021.691:27): pid=7602 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.724377][ T27] audit: type=1800 audit(1553056021.771:28): pid=7602 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. [ 38.544192][ T27] audit: type=1800 audit(1553056022.591:29): pid=7602 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 '10.128.0.144' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 45.465470][ T7753] kasan: CONFIG_KASAN_INLINE enabled [ 45.470922][ T7753] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 45.479026][ T7753] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 45.485979][ T7753] CPU: 1 PID: 7753 Comm: syz-executor260 Not tainted 5.0.0+ #101 [ 45.493671][ T7753] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.503717][ T7753] RIP: 0010:tipc_mcast_filter_msg+0x21b/0x13d0 [ 45.509849][ T7753] Code: 45 c0 0f 84 39 06 00 00 48 89 5d 98 e8 8e af a5 fa 49 8d bc 24 c8 00 00 00 48 b9 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <80> 3c 08 00 0f 85 9a 0e 00 00 49 8b 9c 24 c8 00 00 00 48 be 00 00 [ 45.529468][ T7753] RSP: 0018:ffff88809341efc8 EFLAGS: 00010202 [ 45.535516][ T7753] RAX: 0000000000000019 RBX: ffff8880874d8a08 RCX: dffffc0000000000 [ 45.543468][ T7753] RDX: 0000000000000000 RSI: ffffffff86cab4a2 RDI: 00000000000000c8 [ 45.551437][ T7753] RBP: ffff88809341f030 R08: ffff88808ea64200 R09: ffffed1015d25bc8 [ 45.559388][ T7753] R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 [ 45.567337][ T7753] R13: 000000000000002c R14: 0000000000000000 R15: ffff8880874d8a08 [ 45.575286][ T7753] FS: 0000000001476880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 45.584188][ T7753] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.590745][ T7753] CR2: 0000000020000000 CR3: 0000000092022000 CR4: 00000000001406e0 [ 45.598694][ T7753] Call Trace: [ 45.601967][ T7753] tipc_sk_filter_rcv+0x182d/0x34f0 [ 45.607148][ T7753] ? tipc_sk_overlimit2+0xa0/0xa0 [ 45.612150][ T7753] ? __local_bh_enable_ip+0x15a/0x270 [ 45.617501][ T7753] ? lockdep_hardirqs_on+0x19e/0x5d0 [ 45.622762][ T7753] ? tipc_sk_rcv+0x562/0x25a0 [ 45.627420][ T7753] ? __local_bh_enable_ip+0x15a/0x270 [ 45.632769][ T7753] tipc_sk_rcv+0xc45/0x25a0 [ 45.637251][ T7753] ? lock_downgrade+0x880/0x880 [ 45.642088][ T7753] ? tipc_sk_filter_rcv+0x34f0/0x34f0 [ 45.647436][ T7753] ? find_held_lock+0x35/0x130 [ 45.652176][ T7753] ? __local_bh_enable_ip+0x15a/0x270 [ 45.657524][ T7753] ? lockdep_hardirqs_on+0x418/0x5d0 [ 45.662800][ T7753] ? tipc_sk_mcast_rcv+0x70c/0x1020 [ 45.667975][ T7753] ? trace_hardirqs_on+0x67/0x230 [ 45.672988][ T7753] ? tipc_sk_mcast_rcv+0x70c/0x1020 [ 45.678186][ T7753] ? __local_bh_enable_ip+0x15a/0x270 [ 45.683526][ T7753] tipc_sk_mcast_rcv+0x724/0x1020 [ 45.688530][ T7753] ? tipc_sk_rcv+0x25a0/0x25a0 [ 45.693275][ T7753] ? tipc_msg_reassemble+0x29d/0x570 [ 45.698562][ T7753] ? tipc_msg_build+0x1250/0x1250 [ 45.703574][ T7753] ? lockdep_init_map+0x1be/0x6d0 [ 45.708576][ T7753] tipc_mcast_xmit+0x7fe/0x1200 [ 45.713412][ T7753] ? tipc_bcast_dec_bearer_dst_cnt+0x850/0x850 [ 45.719581][ T7753] tipc_sendmcast+0xb36/0xfc0 [ 45.724236][ T7753] ? tipc_poll+0x7a0/0x7a0 [ 45.728644][ T7753] ? lock_downgrade+0x880/0x880 [ 45.733469][ T7753] ? do_wait_intr_irq+0x2b0/0x2b0 [ 45.738491][ T7753] ? __bfs+0x28/0x590 [ 45.742455][ T7753] ? check_usage_backwards+0x127/0x360 [ 45.747887][ T7753] ? __kernel_text_address+0xd/0x40 [ 45.753068][ T7753] ? print_shortest_lock_dependencies+0x90/0x90 [ 45.760181][ T7753] __tipc_sendmsg+0x10df/0x18d0 [ 45.765007][ T7753] ? __tipc_sendmsg+0x10df/0x18d0 [ 45.770028][ T7753] ? tipc_sendmcast+0xfc0/0xfc0 [ 45.774877][ T7753] ? kasan_check_read+0x11/0x20 [ 45.779721][ T7753] ? mark_lock+0x542/0x1380 [ 45.784217][ T7753] ? print_shortest_lock_dependencies+0x90/0x90 [ 45.790434][ T7753] ? mark_held_locks+0xa4/0xf0 [ 45.795172][ T7753] ? __local_bh_enable_ip+0x15a/0x270 [ 45.800532][ T7753] ? lock_sock_nested+0xe2/0x120 [ 45.805454][ T7753] ? __local_bh_enable_ip+0x15a/0x270 [ 45.810806][ T7753] ? lockdep_hardirqs_on+0x418/0x5d0 [ 45.816069][ T7753] ? lock_sock_nested+0x9a/0x120 [ 45.820987][ T7753] ? trace_hardirqs_on+0x67/0x230 [ 45.826000][ T7753] ? lock_sock_nested+0x9a/0x120 [ 45.830933][ T7753] ? __local_bh_enable_ip+0x15a/0x270 [ 45.836326][ T7753] tipc_sendmsg+0x53/0x80 [ 45.840663][ T7753] ? __tipc_sendmsg+0x18d0/0x18d0 [ 45.845665][ T7753] sock_sendmsg+0xdd/0x130 [ 45.850081][ T7753] ___sys_sendmsg+0x806/0x930 [ 45.854745][ T7753] ? copy_msghdr_from_user+0x430/0x430 [ 45.860179][ T7753] ? __lock_acquire+0x548/0x3fb0 [ 45.865088][ T7753] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.871326][ T7753] ? __this_cpu_preempt_check+0x3a/0x270 [ 45.876948][ T7753] ? __fd_install+0x1bc/0x640 [ 45.881597][ T7753] ? find_held_lock+0x35/0x130 [ 45.886339][ T7753] ? __fd_install+0x1bc/0x640 [ 45.891011][ T7753] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.897248][ T7753] ? __fget_light+0x1a9/0x230 [ 45.901906][ T7753] ? __fdget+0x1b/0x20 [ 45.905958][ T7753] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 45.912205][ T7753] __sys_sendmsg+0x105/0x1d0 [ 45.916773][ T7753] ? __ia32_sys_shutdown+0x80/0x80 [ 45.921857][ T7753] ? __sys_socketpair+0x43f/0x5e0 [ 45.926887][ T7753] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 45.932330][ T7753] ? do_syscall_64+0x26/0x610 [ 45.937005][ T7753] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.943041][ T7753] ? do_syscall_64+0x26/0x610 [ 45.947699][ T7753] __x64_sys_sendmsg+0x78/0xb0 [ 45.952437][ T7753] do_syscall_64+0x103/0x610 [ 45.957003][ T7753] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.962866][ T7753] RIP: 0033:0x4401c9 [ 45.966735][ T7753] 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 [ 45.986333][ T7753] RSP: 002b:00007ffeab6261e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 45.994739][ T7753] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401c9 [ 46.002688][ T7753] RDX: 0000000000000000 RSI: 0000000020001900 RDI: 0000000000000004 [ 46.010635][ T7753] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 46.018593][ T7753] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a50 [ 46.026539][ T7753] R13: 0000000000401ae0 R14: 0000000000000000 R15: 0000000000000000 [ 46.034502][ T7753] Modules linked in: [ 46.038418][ T7753] ---[ end trace 40a22d930ac00328 ]--- [ 46.043874][ T7753] RIP: 0010:tipc_mcast_filter_msg+0x21b/0x13d0 [ 46.050037][ T7753] Code: 45 c0 0f 84 39 06 00 00 48 89 5d 98 e8 8e af a5 fa 49 8d bc 24 c8 00 00 00 48 b9 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <80> 3c 08 00 0f 85 9a 0e 00 00 49 8b 9c 24 c8 00 00 00 48 be 00 00 [ 46.069655][ T7753] RSP: 0018:ffff88809341efc8 EFLAGS: 00010202 [ 46.075695][ T7753] RAX: 0000000000000019 RBX: ffff8880874d8a08 RCX: dffffc0000000000 [ 46.083668][ T7753] RDX: 0000000000000000 RSI: ffffffff86cab4a2 RDI: 00000000000000c8 [ 46.091646][ T7753] RBP: ffff88809341f030 R08: ffff88808ea64200 R09: ffffed1015d25bc8 [ 46.099624][ T7753] R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 [ 46.107630][ T7753] R13: 000000000000002c R14: 0000000000000000 R15: ffff8880874d8a08 [ 46.115582][ T7753] FS: 0000000001476880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 46.124527][ T7753] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.131117][ T7753] CR2: 0000000020000000 CR3: 0000000092022000 CR4: 00000000001406e0 [ 46.139099][ T7753] Kernel panic - not syncing: Fatal exception in interrupt [ 46.146940][ T7753] Kernel Offset: disabled [ 46.151252][ T7753] Rebooting in 86400 seconds..