[ 85.049239][ T27] audit: type=1800 audit(1579137607.184:26): pid=9426 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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. [ 85.865199][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 85.865210][ T27] audit: type=1800 audit(1579137608.034:29): pid=9426 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 [ 85.891892][ T27] audit: type=1800 audit(1579137608.044:30): pid=9426 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.82' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 100.278845][ T9579] list_del corruption, ffff8880a69a3900->prev is LIST_POISON2 (dead000000000122) [ 100.288416][ T9579] ------------[ cut here ]------------ [ 100.293878][ T9579] kernel BUG at lib/list_debug.c:48! [ 100.299476][ T9579] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 100.305555][ T9579] CPU: 0 PID: 9579 Comm: syz-executor635 Not tainted 5.5.0-rc6-syzkaller #0 [ 100.314203][ T9579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.324252][ T9579] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 100.332726][ T9579] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 20 66 71 88 e8 c0 e7 be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 80 66 71 88 e8 ac e7 be fd <0f> 0b 4c 89 f6 48 c7 c7 40 67 71 88 e8 9b e7 be fd 0f 0b cc cc cc [ 100.352398][ T9579] RSP: 0018:ffffc900062bf338 EFLAGS: 00010286 [ 100.358444][ T9579] RAX: 000000000000004e RBX: ffff8880a69a3900 RCX: 0000000000000000 [ 100.366389][ T9579] RDX: 0000000000000000 RSI: ffffffff815e5396 RDI: fffff52000c57e59 [ 100.374335][ T9579] RBP: ffffc900062bf350 R08: 000000000000004e R09: ffffed1015d06621 [ 100.382290][ T9579] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 [ 100.390236][ T9579] R13: ffff8880a8ae9970 R14: ffff8880a69a3900 R15: ffff8880a69a3908 [ 100.398184][ T9579] FS: 0000000001f1f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 100.407084][ T9579] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.413642][ T9579] CR2: 0000000020000280 CR3: 00000000a11a6000 CR4: 00000000001406f0 [ 100.421593][ T9579] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.429553][ T9579] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.437646][ T9579] Call Trace: [ 100.440930][ T9579] nft_obj_del+0xcb/0x1f0 [ 100.445240][ T9579] ? nft_unregister_flowtable_type+0x130/0x130 [ 100.451374][ T9579] ? nf_tables_getflowtable+0x4c0/0x4c0 [ 100.456899][ T9579] ? nft_objname_hash+0x610/0x610 [ 100.461911][ T9579] ? nft_chain_hash_cmp+0x80/0x80 [ 100.466922][ T9579] nf_tables_commit+0x1339/0x3b30 [ 100.472032][ T9579] ? nla_memcpy+0xb0/0xb0 [ 100.476360][ T9579] ? nf_tables_setelem_notify.constprop.0+0x1f0/0x1f0 [ 100.483100][ T9579] ? __nla_parse+0x43/0x60 [ 100.487506][ T9579] nfnetlink_rcv_batch+0xc78/0x17a0 [ 100.492694][ T9579] ? nf_tables_dump_chains+0x6c1/0x8e0 [ 100.498133][ T9579] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 100.503918][ T9579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.510145][ T9579] ? apparmor_capable+0x497/0x900 [ 100.515185][ T9579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.521429][ T9579] ? __nla_validate_parse+0x2d0/0x1ee0 [ 100.526867][ T9579] ? cap_capable+0x205/0x270 [ 100.531436][ T9579] ? nla_memcpy+0xb0/0xb0 [ 100.535745][ T9579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.541966][ T9579] ? ns_capable_common+0x93/0x100 [ 100.546989][ T9579] ? __nla_parse+0x43/0x60 [ 100.551407][ T9579] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 100.557129][ T9579] nfnetlink_rcv+0x3e7/0x460 [ 100.561804][ T9579] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 100.567237][ T9579] ? netlink_deliver_tap+0x24a/0xbe0 [ 100.572500][ T9579] ? __kasan_check_write+0x14/0x20 [ 100.577585][ T9579] netlink_unicast+0x58c/0x7d0 [ 100.582328][ T9579] ? netlink_attachskb+0x870/0x870 [ 100.587414][ T9579] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 100.593112][ T9579] ? __check_object_size+0x3d/0x437 [ 100.598286][ T9579] netlink_sendmsg+0x91c/0xea0 [ 100.603039][ T9579] ? netlink_unicast+0x7d0/0x7d0 [ 100.607962][ T9579] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 100.613495][ T9579] ? apparmor_socket_sendmsg+0x2a/0x30 [ 100.618933][ T9579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.625157][ T9579] ? security_socket_sendmsg+0x8d/0xc0 [ 100.630595][ T9579] ? netlink_unicast+0x7d0/0x7d0 [ 100.635514][ T9579] sock_sendmsg+0xd7/0x130 [ 100.639921][ T9579] ____sys_sendmsg+0x753/0x880 [ 100.644667][ T9579] ? kernel_sendmsg+0x50/0x50 [ 100.649320][ T9579] ? lockdep_init_map+0x1be/0x6d0 [ 100.654329][ T9579] ___sys_sendmsg+0x100/0x170 [ 100.658999][ T9579] ? sendmsg_copy_msghdr+0x70/0x70 [ 100.664097][ T9579] ? __kasan_check_read+0x11/0x20 [ 100.669107][ T9579] ? __lock_acquire+0x8a0/0x4a00 [ 100.674044][ T9579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.680267][ T9579] ? __this_cpu_preempt_check+0x35/0x190 [ 100.685880][ T9579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.692108][ T9579] ? percpu_counter_add_batch+0x13c/0x190 [ 100.698865][ T9579] ? __fd_install+0x1bc/0x640 [ 100.703532][ T9579] ? find_held_lock+0x35/0x130 [ 100.708290][ T9579] ? __fd_install+0x1bc/0x640 [ 100.712950][ T9579] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.719896][ T9579] ? __fget_light+0x1a9/0x230 [ 100.724550][ T9579] ? __fdget+0x1b/0x20 [ 100.728608][ T9579] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 100.735908][ T9579] __sys_sendmsg+0x105/0x1d0 [ 100.740496][ T9579] ? __sys_sendmsg_sock+0xc0/0xc0 [ 100.745515][ T9579] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 100.750956][ T9579] ? do_syscall_64+0x26/0x790 [ 100.755627][ T9579] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.761714][ T9579] ? do_syscall_64+0x26/0x790 [ 100.766375][ T9579] __x64_sys_sendmsg+0x78/0xb0 [ 100.771470][ T9579] do_syscall_64+0xfa/0x790 [ 100.775973][ T9579] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.784645][ T9579] RIP: 0033:0x4406a9 [ 100.788545][ T9579] 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 [ 100.808394][ T9579] RSP: 002b:00007ffdf937f218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 100.816785][ T9579] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004406a9 [ 100.824735][ T9579] RDX: 0000000000042000 RSI: 0000000020000140 RDI: 0000000000000004 [ 100.832695][ T9579] RBP: 00000000006ca018 R08: 0000000000000001 R09: 00000000004002c8 [ 100.840643][ T9579] R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000401f30 [ 100.848600][ T9579] R13: 0000000000401fc0 R14: 0000000000000000 R15: 0000000000000000 [ 100.856815][ T9579] Modules linked in: [ 100.861075][ T9579] ---[ end trace 9032affb28c2aa2b ]--- [ 100.866560][ T9579] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 100.873235][ T9579] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 20 66 71 88 e8 c0 e7 be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 80 66 71 88 e8 ac e7 be fd <0f> 0b 4c 89 f6 48 c7 c7 40 67 71 88 e8 9b e7 be fd 0f 0b cc cc cc [ 100.892884][ T9579] RSP: 0018:ffffc900062bf338 EFLAGS: 00010286 [ 100.898973][ T9579] RAX: 000000000000004e RBX: ffff8880a69a3900 RCX: 0000000000000000 [ 100.907042][ T9579] RDX: 0000000000000000 RSI: ffffffff815e5396 RDI: fffff52000c57e59 [ 100.915053][ T9579] RBP: ffffc900062bf350 R08: 000000000000004e R09: ffffed1015d06621 [ 100.923131][ T9579] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 [ 100.931553][ T9579] R13: ffff8880a8ae9970 R14: ffff8880a69a3900 R15: ffff8880a69a3908 [ 100.939542][ T9579] FS: 0000000001f1f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 100.948471][ T9579] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.955086][ T9579] CR2: 0000000020000280 CR3: 00000000a11a6000 CR4: 00000000001406f0 [ 100.963085][ T9579] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.971153][ T9579] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.979131][ T9579] Kernel panic - not syncing: Fatal exception [ 100.986670][ T9579] Kernel Offset: disabled [ 100.990996][ T9579] Rebooting in 86400 seconds..