[ 37.023711][ T27] audit: type=1800 audit(1553057984.948:26): pid=7595 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.108453][ T27] audit: type=1800 audit(1553057985.048:27): pid=7595 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 37.143828][ T27] audit: type=1800 audit(1553057985.088:28): pid=7595 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. [ 37.940524][ T27] audit: type=1800 audit(1553057985.878:29): pid=7595 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 '10.128.0.156' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 47.699822][ T7750] kasan: CONFIG_KASAN_INLINE enabled [ 47.705289][ T7750] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.713413][ T7750] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 47.720346][ T7750] CPU: 1 PID: 7750 Comm: syz-executor690 Not tainted 5.0.0+ #101 [ 47.728058][ T7750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.738128][ T7750] RIP: 0010:tipc_mcast_filter_msg+0x21b/0x13d0 [ 47.744288][ T7750] 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 [ 47.763911][ T7750] RSP: 0018:ffff88808e886fc8 EFLAGS: 00010202 [ 47.769961][ T7750] RAX: 0000000000000019 RBX: ffff88808d039c08 RCX: dffffc0000000000 [ 47.778086][ T7750] RDX: 0000000000000000 RSI: ffffffff86cab4a2 RDI: 00000000000000c8 [ 47.786076][ T7750] RBP: ffff88808e887030 R08: ffff8880906c2500 R09: ffffed1015d25bc8 [ 47.794055][ T7750] R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 [ 47.802019][ T7750] R13: 000000000000002c R14: 0000000000000000 R15: ffff88808d039c08 [ 47.810004][ T7750] FS: 00000000022d1880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.818944][ T7750] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.825533][ T7750] CR2: 0000000020001cc0 CR3: 00000000927d4000 CR4: 00000000001406e0 [ 47.833497][ T7750] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.841472][ T7750] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.849456][ T7750] Call Trace: [ 47.852744][ T7750] tipc_sk_filter_rcv+0x182d/0x34f0 [ 47.857929][ T7750] ? tipc_sk_overlimit2+0xa0/0xa0 [ 47.862957][ T7750] ? __local_bh_enable_ip+0x15a/0x270 [ 47.868311][ T7750] ? lockdep_hardirqs_on+0x19e/0x5d0 [ 47.873579][ T7750] ? tipc_sk_rcv+0x562/0x25a0 [ 47.878284][ T7750] ? __local_bh_enable_ip+0x15a/0x270 [ 47.883657][ T7750] tipc_sk_rcv+0xc45/0x25a0 [ 47.888298][ T7750] ? lock_downgrade+0x880/0x880 [ 47.893155][ T7750] ? tipc_sk_filter_rcv+0x34f0/0x34f0 [ 47.898510][ T7750] ? find_held_lock+0x35/0x130 [ 47.903261][ T7750] ? __local_bh_enable_ip+0x15a/0x270 [ 47.908619][ T7750] ? lockdep_hardirqs_on+0x418/0x5d0 [ 47.913889][ T7750] ? tipc_sk_mcast_rcv+0x70c/0x1020 [ 47.919071][ T7750] ? trace_hardirqs_on+0x67/0x230 [ 47.924105][ T7750] ? tipc_sk_mcast_rcv+0x70c/0x1020 [ 47.929302][ T7750] ? __local_bh_enable_ip+0x15a/0x270 [ 47.934690][ T7750] tipc_sk_mcast_rcv+0x724/0x1020 [ 47.939895][ T7750] ? tipc_sk_rcv+0x25a0/0x25a0 [ 47.944669][ T7750] ? tipc_msg_reassemble+0x29d/0x570 [ 47.949942][ T7750] ? tipc_msg_build+0x1250/0x1250 [ 47.954975][ T7750] ? lockdep_init_map+0x1be/0x6d0 [ 47.959992][ T7750] tipc_mcast_xmit+0x7fe/0x1200 [ 47.964836][ T7750] ? tipc_bcast_dec_bearer_dst_cnt+0x850/0x850 [ 47.971005][ T7750] tipc_sendmcast+0xb36/0xfc0 [ 47.975682][ T7750] ? tipc_poll+0x7a0/0x7a0 [ 47.980149][ T7750] ? lock_downgrade+0x880/0x880 [ 47.985010][ T7750] ? do_wait_intr_irq+0x2b0/0x2b0 [ 47.990023][ T7750] ? __bfs+0x28/0x590 [ 47.994004][ T7750] ? check_usage_backwards+0x127/0x360 [ 47.999447][ T7750] ? __kernel_text_address+0xd/0x40 [ 48.004654][ T7750] ? print_shortest_lock_dependencies+0x90/0x90 [ 48.010894][ T7750] __tipc_sendmsg+0x10df/0x18d0 [ 48.015737][ T7750] ? __tipc_sendmsg+0x10df/0x18d0 [ 48.020771][ T7750] ? tipc_sendmcast+0xfc0/0xfc0 [ 48.025619][ T7750] ? kasan_check_read+0x11/0x20 [ 48.030468][ T7750] ? mark_lock+0x542/0x1380 [ 48.034961][ T7750] ? print_shortest_lock_dependencies+0x90/0x90 [ 48.041206][ T7750] ? mark_held_locks+0xa4/0xf0 [ 48.045989][ T7750] ? __local_bh_enable_ip+0x15a/0x270 [ 48.051345][ T7750] ? lock_sock_nested+0xe2/0x120 [ 48.056287][ T7750] ? __local_bh_enable_ip+0x15a/0x270 [ 48.061666][ T7750] ? lockdep_hardirqs_on+0x418/0x5d0 [ 48.066958][ T7750] ? lock_sock_nested+0x9a/0x120 [ 48.071882][ T7750] ? trace_hardirqs_on+0x67/0x230 [ 48.076929][ T7750] ? lock_sock_nested+0x9a/0x120 [ 48.081894][ T7750] ? __local_bh_enable_ip+0x15a/0x270 [ 48.087260][ T7750] tipc_sendmsg+0x53/0x80 [ 48.091575][ T7750] ? __tipc_sendmsg+0x18d0/0x18d0 [ 48.096609][ T7750] sock_sendmsg+0xdd/0x130 [ 48.101014][ T7750] ___sys_sendmsg+0x806/0x930 [ 48.105684][ T7750] ? copy_msghdr_from_user+0x430/0x430 [ 48.111133][ T7750] ? __lock_acquire+0x548/0x3fb0 [ 48.116062][ T7750] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.122340][ T7750] ? __this_cpu_preempt_check+0x3a/0x270 [ 48.128057][ T7750] ? __fd_install+0x1bc/0x640 [ 48.132728][ T7750] ? find_held_lock+0x35/0x130 [ 48.137612][ T7750] ? __fd_install+0x1bc/0x640 [ 48.142347][ T7750] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.148689][ T7750] ? __fget_light+0x1a9/0x230 [ 48.153372][ T7750] ? __fdget+0x1b/0x20 [ 48.157425][ T7750] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 48.163672][ T7750] __sys_sendmsg+0x105/0x1d0 [ 48.168281][ T7750] ? __ia32_sys_shutdown+0x80/0x80 [ 48.173390][ T7750] ? __sys_socketpair+0x43f/0x5e0 [ 48.178476][ T7750] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.184103][ T7750] ? do_syscall_64+0x26/0x610 [ 48.188788][ T7750] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.194844][ T7750] ? do_syscall_64+0x26/0x610 [ 48.199533][ T7750] __x64_sys_sendmsg+0x78/0xb0 [ 48.204287][ T7750] do_syscall_64+0x103/0x610 [ 48.208860][ T7750] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.214743][ T7750] RIP: 0033:0x4401c9 [ 48.218746][ T7750] 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 [ 48.238338][ T7750] RSP: 002b:00007ffed2ebd9b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.246754][ T7750] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401c9 [ 48.254710][ T7750] RDX: 0000000000000000 RSI: 0000000020002140 RDI: 0000000000000003 [ 48.263128][ T7750] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 48.271187][ T7750] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a50 [ 48.279236][ T7750] R13: 0000000000401ae0 R14: 0000000000000000 R15: 0000000000000000 [ 48.287193][ T7750] Modules linked in: [ 48.291155][ T7750] ---[ end trace 5c90913a196251bb ]--- [ 48.296638][ T7750] RIP: 0010:tipc_mcast_filter_msg+0x21b/0x13d0 [ 48.302827][ T7750] 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 [ 48.322497][ T7750] RSP: 0018:ffff88808e886fc8 EFLAGS: 00010202 [ 48.328583][ T7750] RAX: 0000000000000019 RBX: ffff88808d039c08 RCX: dffffc0000000000 [ 48.336580][ T7750] RDX: 0000000000000000 RSI: ffffffff86cab4a2 RDI: 00000000000000c8 [ 48.344745][ T7750] RBP: ffff88808e887030 R08: ffff8880906c2500 R09: ffffed1015d25bc8 [ 48.352743][ T7750] R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: 0000000000000000 [ 48.360728][ T7750] R13: 000000000000002c R14: 0000000000000000 R15: ffff88808d039c08 [ 48.369196][ T7750] FS: 00000000022d1880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 48.378248][ T7750] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.384876][ T7750] CR2: 0000000020001cc0 CR3: 00000000927d4000 CR4: 00000000001406e0 [ 48.392964][ T7750] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.401006][ T7750] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.409290][ T7750] Kernel panic - not syncing: Fatal exception in interrupt [ 48.417452][ T7750] Kernel Offset: disabled [ 48.421775][ T7750] Rebooting in 86400 seconds..