[ 87.006879][ T27] audit: type=1800 audit(1579627714.290:36): pid=10679 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 87.837588][ T27] audit: type=1400 audit(1579627715.200:37): avc: denied { watch } for pid=10781 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.130' (ECDSA) to the list of known hosts. syzkaller login: [ 99.437377][ T27] kauditd_printk_skb: 4 callbacks suppressed [ 99.437393][ T27] audit: type=1400 audit(1579627726.800:42): avc: denied { map } for pid=10871 comm="syz-executor862" path="/root/syz-executor862847945" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 99.473675][T10880] IPVS: ftp: loaded support on port[0] = 21 [ 99.482229][T10882] IPVS: ftp: loaded support on port[0] = 21 [ 99.484477][T10879] IPVS: ftp: loaded support on port[0] = 21 [ 99.496168][T10883] IPVS: ftp: loaded support on port[0] = 21 [ 99.501645][T10878] IPVS: ftp: loaded support on port[0] = 21 [ 99.511215][T10881] IPVS: ftp: loaded support on port[0] = 21 executing program [ 99.626085][ T27] audit: type=1400 audit(1579627726.990:43): avc: denied { create } for pid=10884 comm="syz-executor862" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 executing program executing program executing program executing program executing program [ 99.654964][ T27] audit: type=1400 audit(1579627726.990:44): avc: denied { write } for pid=10884 comm="syz-executor862" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 100.079469][T10979] list_del corruption, ffff8880a2645c00->prev is LIST_POISON2 (dead000000000122) [ 100.093747][T10979] ------------[ cut here ]------------ [ 100.099253][T10979] kernel BUG at lib/list_debug.c:48! [ 100.106815][T10979] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 100.112906][T10979] CPU: 0 PID: 10979 Comm: syz-executor862 Not tainted 5.5.0-rc7-syzkaller #0 [ 100.121732][T10979] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.131780][T10979] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 100.138277][T10979] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 69 71 88 e8 e0 de be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 c0 69 71 88 e8 cc de be fd <0f> 0b 4c 89 f6 48 c7 c7 80 6a 71 88 e8 bb de be fd 0f 0b cc cc cc [ 100.157955][T10979] RSP: 0018:ffffc900023c7478 EFLAGS: 00010282 [ 100.164014][T10979] RAX: 000000000000004e RBX: ffff8880a2645c00 RCX: 0000000000000000 [ 100.171970][T10979] RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000478e81 [ 100.179954][T10979] RBP: ffffc900023c7490 R08: 000000000000004e R09: ffffed1015d06621 [ 100.187913][T10979] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 [ 100.195972][T10979] R13: ffff8880a7e3d370 R14: ffff8880a2645c00 R15: ffff888096df0a80 [ 100.203926][T10979] FS: 00007f87834b2700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 100.212853][T10979] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.219960][T10979] CR2: 00007f8783490e78 CR3: 00000000a7e41000 CR4: 00000000001406f0 [ 100.227945][T10979] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.235913][T10979] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.243865][T10979] Call Trace: [ 100.247145][T10979] __nf_tables_abort+0x1e53/0x2a50 [ 100.252244][T10979] nf_tables_abort+0x17/0x30 [ 100.256832][T10979] nfnetlink_rcv_batch+0xa5d/0x17a0 [ 100.262294][T10979] ? nf_tables_fill_flowtable_info.isra.0+0x1a1/0xaf0 [ 100.269056][T10979] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 100.274883][T10979] ? selinux_sb_eat_lsm_opts+0x700/0x700 [ 100.280515][T10979] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.286749][T10979] ? __nla_validate_parse+0x2d0/0x1ee0 [ 100.292428][T10979] ? selinux_capable+0x36/0x40 [ 100.297206][T10979] ? nla_memcpy+0xb0/0xb0 [ 100.301532][T10979] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.307759][T10979] ? ns_capable_common+0x93/0x100 [ 100.312869][T10979] ? __nla_parse+0x43/0x60 [ 100.317280][T10979] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 100.322998][T10979] nfnetlink_rcv+0x3e7/0x460 [ 100.327596][T10979] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 100.333075][T10979] ? netlink_deliver_tap+0x24a/0xbe0 [ 100.338364][T10979] ? __kasan_check_write+0x14/0x20 [ 100.343469][T10979] netlink_unicast+0x58c/0x7d0 [ 100.348223][T10979] ? netlink_attachskb+0x870/0x870 [ 100.353323][T10979] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.359560][T10979] netlink_sendmsg+0x91c/0xea0 [ 100.364321][T10979] ? netlink_unicast+0x7d0/0x7d0 [ 100.370285][T10979] ? tomoyo_socket_sendmsg+0x26/0x30 [ 100.375646][T10979] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.381870][T10979] ? security_socket_sendmsg+0x8d/0xc0 [ 100.387322][T10979] ? netlink_unicast+0x7d0/0x7d0 [ 100.392236][T10979] sock_sendmsg+0xd7/0x130 [ 100.396630][T10979] ____sys_sendmsg+0x753/0x880 [ 100.401440][T10979] ? kernel_sendmsg+0x50/0x50 [ 100.406121][T10979] ? __fget+0x35d/0x550 [ 100.410258][T10979] ? find_held_lock+0x35/0x130 [ 100.415018][T10979] ___sys_sendmsg+0x100/0x170 [ 100.420025][T10979] ? sendmsg_copy_msghdr+0x70/0x70 [ 100.425136][T10979] ? __kasan_check_read+0x11/0x20 [ 100.430144][T10979] ? ksys_dup3+0x3e0/0x3e0 [ 100.434547][T10979] ? __fget_light+0x1a9/0x230 [ 100.439209][T10979] ? __fdget+0x1b/0x20 [ 100.443454][T10979] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 100.449687][T10979] __sys_sendmsg+0x105/0x1d0 [ 100.454255][T10979] ? __sys_sendmsg_sock+0xc0/0xc0 [ 100.459274][T10979] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 100.464724][T10979] ? do_syscall_64+0x26/0x790 [ 100.469388][T10979] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.475436][T10979] ? do_syscall_64+0x26/0x790 [ 100.480095][T10979] __x64_sys_sendmsg+0x78/0xb0 [ 100.484839][T10979] do_syscall_64+0xfa/0x790 [ 100.489325][T10979] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.495206][T10979] RIP: 0033:0x446d79 [ 100.499091][T10979] Code: e8 8c e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 100.518761][T10979] RSP: 002b:00007f87834b1d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e executing program [ 100.527168][T10979] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446d79 [ 100.535120][T10979] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 [ 100.543158][T10979] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 100.551124][T10979] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 100.559100][T10979] R13: 000000200a000000 R14: 0000000000006c00 R15: 0000001000000014 [ 100.567062][T10979] Modules linked in: [ 100.571444][T10979] ---[ end trace 85aba1c54029876d ]--- executing program executing program executing program [ 100.578116][T10979] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 100.588444][T10979] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 69 71 88 e8 e0 de be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 c0 69 71 88 e8 cc de be fd <0f> 0b 4c 89 f6 48 c7 c7 80 6a 71 88 e8 bb de be fd 0f 0b cc cc cc [ 100.608386][T10979] RSP: 0018:ffffc900023c7478 EFLAGS: 00010282 [ 100.614673][T10979] RAX: 000000000000004e RBX: ffff8880a2645c00 RCX: 0000000000000000 [ 100.623151][T10979] RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000478e81 executing program executing program executing program executing program executing program [ 100.631219][T10979] RBP: ffffc900023c7490 R08: 000000000000004e R09: ffffed1015d06621 [ 100.639613][T10979] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 [ 100.647946][T10979] R13: ffff8880a7e3d370 R14: ffff8880a2645c00 R15: ffff888096df0a80 [ 100.661215][T10979] FS: 00007f87834b2700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 100.674829][T10979] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 executing program executing program [ 100.681532][T10979] CR2: 00007f8783490e78 CR3: 00000000a7e41000 CR4: 00000000001406f0 [ 100.690739][T10979] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.700391][T10979] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.708964][T10979] Kernel panic - not syncing: Fatal exception [ 100.716419][T10979] Kernel Offset: disabled [ 100.720746][T10979] Rebooting in 86400 seconds..