[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 94.851648][ T28] audit: type=1800 audit(1579500345.513:25): pid=9553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 94.875952][ T28] audit: type=1800 audit(1579500345.513:26): pid=9553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 94.938531][ T28] audit: type=1800 audit(1579500345.513:27): pid=9553 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.203' (ECDSA) to the list of known hosts. syzkaller login: [ 113.320745][ T9710] IPVS: ftp: loaded support on port[0] = 21 [ 113.321688][ T9716] IPVS: ftp: loaded support on port[0] = 21 [ 113.328111][ T9714] IPVS: ftp: loaded support on port[0] = 21 [ 113.341176][ T9717] IPVS: ftp: loaded support on port[0] = 21 [ 113.352647][ T9715] IPVS: ftp: loaded support on port[0] = 21 [ 113.361262][ T9718] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 113.448174][ T9720] netlink: 20 bytes leftover after parsing attributes in process `syz-executor474'. [ 113.485153][ T9723] netlink: 20 bytes leftover after parsing attributes in process `syz-executor474'. executing program executing program [ 113.514919][ T9727] netlink: 20 bytes leftover after parsing attributes in process `syz-executor474'. [ 113.524850][ T9728] netlink: 20 bytes leftover after parsing attributes in process `syz-executor474'. [ 113.524880][ T9732] netlink: 20 bytes leftover after parsing attributes in process `syz-executor474'. [ 113.536161][ T9733] netlink: 20 bytes leftover after parsing attributes in process `syz-executor474'. [ 113.580432][ T9732] list_del corruption, ffff8880a914b400->prev is LIST_POISON2 (dead000000000122) [ 113.590992][ T9732] ------------[ cut here ]------------ [ 113.596473][ T9732] kernel BUG at lib/list_debug.c:48! [ 113.602465][ T9732] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 113.608613][ T9732] CPU: 0 PID: 9732 Comm: syz-executor474 Not tainted 5.5.0-rc5-syzkaller #0 [ 113.617612][ T9732] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program [ 113.624750][ T9738] netlink: 20 bytes leftover after parsing attributes in process `syz-executor474'. [ 113.627682][ T9732] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 113.641686][ T9738] ------------[ cut here ]------------ [ 113.643626][ T9732] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 a0 65 71 88 e8 a0 ba be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 66 71 88 e8 8c ba be fd <0f> 0b 4c 89 f6 48 c7 c7 c0 66 71 88 e8 7b ba be fd 0f 0b cc cc cc [ 113.649082][ T9738] WARNING: CPU: 1 PID: 9738 at net/netfilter/nf_tables_api.c:603 lockdep_nfnl_nft_mutex_not_held+0x30/0x40 [ 113.668671][ T9732] RSP: 0018:ffffc90002217478 EFLAGS: 00010282 [ 113.680025][ T9738] Kernel panic - not syncing: panic_on_warn set ... [ 113.686099][ T9732] RAX: 000000000000004e RBX: ffff8880a914b400 RCX: 0000000000000000 [ 113.700673][ T9732] RDX: 0000000000000000 RSI: ffffffff815e53a6 RDI: fffff52000442e81 [ 113.708653][ T9732] RBP: ffffc90002217490 R08: 000000000000004e R09: ffffed1015d06621 [ 113.716634][ T9732] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 [ 113.724725][ T9732] R13: ffff8880a9548c00 R14: ffff8880a914b400 R15: ffff88809a699b80 [ 113.734009][ T9732] FS: 00007f37fdeb6700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 113.742950][ T9732] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.749551][ T9732] CR2: 00007ffd62ddff0c CR3: 000000009dafd000 CR4: 00000000001406f0 [ 113.757541][ T9732] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.765522][ T9732] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.773513][ T9732] Call Trace: [ 113.776846][ T9732] __nf_tables_abort+0x1e53/0x2a50 [ 113.782127][ T9732] ? nfnl_err_del+0x115/0x170 [ 113.786830][ T9732] nf_tables_abort+0x17/0x30 [ 113.791439][ T9732] nfnetlink_rcv_batch+0xa5d/0x17a0 [ 113.796651][ T9732] ? nf_tables_delobj+0x8f0/0x8f0 [ 113.801984][ T9732] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 113.807793][ T9732] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.814708][ T9732] ? apparmor_capable+0x497/0x900 [ 113.819817][ T9732] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.826062][ T9732] ? __nla_validate_parse+0x2d0/0x1ee0 [ 113.831540][ T9732] ? cap_capable+0x205/0x270 [ 113.836137][ T9732] ? nla_memcpy+0xb0/0xb0 [ 113.840608][ T9732] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.846846][ T9732] ? ns_capable_common+0x93/0x100 [ 113.851887][ T9732] ? __nla_parse+0x43/0x60 [ 113.856312][ T9732] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 113.862051][ T9732] nfnetlink_rcv+0x3e7/0x460 [ 113.866640][ T9732] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 113.872220][ T9732] ? netlink_deliver_tap+0x24a/0xbe0 [ 113.877508][ T9732] ? __kasan_check_write+0x14/0x20 [ 113.882630][ T9732] netlink_unicast+0x58c/0x7d0 [ 113.887411][ T9732] ? netlink_attachskb+0x870/0x870 [ 113.892527][ T9732] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 113.898256][ T9732] ? __check_object_size+0x3d/0x437 [ 113.903469][ T9732] netlink_sendmsg+0x91c/0xea0 [ 113.908245][ T9732] ? netlink_unicast+0x7d0/0x7d0 [ 113.913192][ T9732] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 113.918764][ T9732] ? apparmor_socket_sendmsg+0x2a/0x30 [ 113.924231][ T9732] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.930483][ T9732] ? security_socket_sendmsg+0x8d/0xc0 [ 113.935963][ T9732] ? netlink_unicast+0x7d0/0x7d0 [ 113.940920][ T9732] sock_sendmsg+0xd7/0x130 [ 113.945329][ T9732] ____sys_sendmsg+0x753/0x880 [ 113.950087][ T9732] ? kernel_sendmsg+0x50/0x50 [ 113.954796][ T9732] ? __fget+0x35d/0x550 [ 113.958944][ T9732] ? find_held_lock+0x35/0x130 [ 113.963893][ T9732] ___sys_sendmsg+0x100/0x170 [ 113.968582][ T9732] ? sendmsg_copy_msghdr+0x70/0x70 [ 113.973688][ T9732] ? __kasan_check_read+0x11/0x20 [ 113.978721][ T9732] ? __fget+0x37f/0x550 [ 113.982890][ T9732] ? ksys_dup3+0x3e0/0x3e0 [ 113.987300][ T9732] ? __do_page_fault+0x56a/0xd80 [ 113.992249][ T9732] ? __fget_light+0x1a9/0x230 [ 113.996960][ T9732] ? __fdget+0x1b/0x20 [ 114.001291][ T9732] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 114.007545][ T9732] __sys_sendmsg+0x105/0x1d0 [ 114.012135][ T9732] ? __sys_sendmsg_sock+0xc0/0xc0 [ 114.017302][ T9732] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 114.022865][ T9732] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 114.028319][ T9732] ? do_syscall_64+0x26/0x790 [ 114.033261][ T9732] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 114.039357][ T9732] ? do_syscall_64+0x26/0x790 [ 114.044033][ T9732] __x64_sys_sendmsg+0x78/0xb0 [ 114.048809][ T9732] do_syscall_64+0xfa/0x790 [ 114.053313][ T9732] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 114.059197][ T9732] RIP: 0033:0x446b79 [ 114.063112][ T9732] 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 [ 114.083171][ T9732] RSP: 002b:00007f37fdeb5da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 114.091677][ T9732] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446b79 [ 114.099778][ T9732] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 114.107867][ T9732] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 114.115848][ T9732] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 114.123825][ T9732] R13: 00000000200002c0 R14: 00000000004aeb60 R15: 0000000000000000 [ 114.131915][ T9732] Modules linked in: [ 114.137481][ T9738] Kernel Offset: disabled [ 114.141835][ T9738] Rebooting in 86400 seconds..