[ 76.455231][ T27] audit: type=1800 audit(1579137154.325:26): pid=9613 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. [ 77.523258][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 77.523270][ T27] audit: type=1800 audit(1579137155.415:29): pid=9613 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 [ 77.552893][ T27] audit: type=1800 audit(1579137155.415:30): pid=9613 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: [ 94.658914][ T9769] list_del corruption, ffff8880a3e12300->prev is LIST_POISON2 (dead000000000122) [ 94.670871][ T9769] ------------[ cut here ]------------ [ 94.676779][ T9769] kernel BUG at lib/list_debug.c:48! [ 94.683025][ T9769] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 94.690372][ T9769] CPU: 0 PID: 9769 Comm: syz-executor601 Not tainted 5.5.0-rc5-syzkaller #0 [ 94.699943][ T9769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.714735][ T9769] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 94.722681][ T9769] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 20 67 71 88 e8 50 bd be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 80 67 71 88 e8 3c bd be fd <0f> 0b 4c 89 f6 48 c7 c7 40 68 71 88 e8 2b bd be fd 0f 0b cc cc cc [ 94.743344][ T9769] RSP: 0018:ffffc9000208f338 EFLAGS: 00010286 [ 94.750312][ T9769] RAX: 000000000000004e RBX: ffff8880a3e12300 RCX: 0000000000000000 [ 94.759192][ T9769] RDX: 0000000000000000 RSI: ffffffff815e5e56 RDI: fffff52000411e59 [ 94.767823][ T9769] RBP: ffffc9000208f350 R08: 000000000000004e R09: ffffed1015d06621 [ 94.776330][ T9769] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 [ 94.785062][ T9769] R13: ffff8880a8237d70 R14: ffff8880a3e12300 R15: ffff8880a3e12308 [ 94.793298][ T9769] FS: 000000000162e880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 94.803287][ T9769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.810258][ T9769] CR2: 0000000020000280 CR3: 00000000961f1000 CR4: 00000000001406f0 [ 94.818725][ T9769] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 94.827146][ T9769] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 94.835941][ T9769] Call Trace: [ 94.839512][ T9769] nft_obj_del+0xcb/0x1f0 [ 94.843851][ T9769] ? nft_unregister_flowtable_type+0x130/0x130 [ 94.850004][ T9769] ? nf_tables_getflowtable+0x4c0/0x4c0 [ 94.855891][ T9769] ? nft_objname_hash+0x610/0x610 [ 94.861139][ T9769] ? nft_chain_hash_cmp+0x80/0x80 [ 94.866663][ T9769] nf_tables_commit+0x1339/0x3b30 [ 94.871957][ T9769] ? nla_memcpy+0xb0/0xb0 [ 94.877444][ T9769] ? nf_tables_setelem_notify.constprop.0+0x1f0/0x1f0 [ 94.885036][ T9769] ? __nla_parse+0x43/0x60 [ 94.889595][ T9769] nfnetlink_rcv_batch+0xc78/0x17a0 [ 94.895030][ T9769] ? nf_tables_getset+0x51/0x680 [ 94.900719][ T9769] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 94.907254][ T9769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.913719][ T9769] ? apparmor_capable+0x497/0x900 [ 94.919042][ T9769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.925569][ T9769] ? __nla_validate_parse+0x2d0/0x1ee0 [ 94.931222][ T9769] ? cap_capable+0x205/0x270 [ 94.936221][ T9769] ? nla_memcpy+0xb0/0xb0 [ 94.941158][ T9769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.947600][ T9769] ? ns_capable_common+0x93/0x100 [ 94.956083][ T9769] ? __nla_parse+0x43/0x60 [ 94.960731][ T9769] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 94.966832][ T9769] nfnetlink_rcv+0x3e7/0x460 [ 94.972015][ T9769] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 94.980197][ T9769] ? netlink_deliver_tap+0x24a/0xbf0 [ 94.985942][ T9769] ? __kasan_check_write+0x14/0x20 [ 94.991570][ T9769] netlink_unicast+0x59e/0x7e0 [ 94.996531][ T9769] ? netlink_attachskb+0x870/0x870 [ 95.002067][ T9769] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 95.007798][ T9769] ? __check_object_size+0x3d/0x437 [ 95.013556][ T9769] netlink_sendmsg+0x91c/0xea0 [ 95.019143][ T9769] ? netlink_unicast+0x7e0/0x7e0 [ 95.024152][ T9769] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 95.030467][ T9769] ? apparmor_socket_sendmsg+0x2a/0x30 [ 95.036471][ T9769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.043157][ T9769] ? security_socket_sendmsg+0x8d/0xc0 [ 95.048745][ T9769] ? netlink_unicast+0x7e0/0x7e0 [ 95.053774][ T9769] sock_sendmsg+0xd7/0x130 [ 95.058578][ T9769] ____sys_sendmsg+0x753/0x880 [ 95.063430][ T9769] ? kernel_sendmsg+0x50/0x50 [ 95.068423][ T9769] ? lockdep_init_map+0x1be/0x6d0 [ 95.073588][ T9769] ___sys_sendmsg+0x100/0x170 [ 95.078944][ T9769] ? sendmsg_copy_msghdr+0x70/0x70 [ 95.084490][ T9769] ? __kasan_check_read+0x11/0x20 [ 95.089821][ T9769] ? __lock_acquire+0x8a0/0x4a00 [ 95.095355][ T9769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.101690][ T9769] ? __this_cpu_preempt_check+0x35/0x190 [ 95.108116][ T9769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.115000][ T9769] ? percpu_counter_add_batch+0x13c/0x190 [ 95.121302][ T9769] ? __fd_install+0x1bc/0x640 [ 95.128604][ T9769] ? find_held_lock+0x35/0x130 [ 95.133905][ T9769] ? __fd_install+0x1bc/0x640 [ 95.138944][ T9769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.145207][ T9769] ? __fget_light+0x1a9/0x230 [ 95.150026][ T9769] ? __fdget+0x1b/0x20 [ 95.154097][ T9769] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 95.160451][ T9769] __sys_sendmsg+0x105/0x1d0 [ 95.165312][ T9769] ? __sys_sendmsg_sock+0xc0/0xc0 [ 95.170813][ T9769] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.176322][ T9769] ? do_syscall_64+0x26/0x790 [ 95.181349][ T9769] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.187864][ T9769] ? do_syscall_64+0x26/0x790 [ 95.192674][ T9769] __x64_sys_sendmsg+0x78/0xb0 [ 95.197991][ T9769] do_syscall_64+0xfa/0x790 [ 95.202627][ T9769] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.208905][ T9769] RIP: 0033:0x4406a9 [ 95.212881][ T9769] 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 [ 95.233469][ T9769] RSP: 002b:00007ffda00fab88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.242331][ T9769] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004406a9 [ 95.250446][ T9769] RDX: 0000000000042000 RSI: 0000000020000140 RDI: 0000000000000004 [ 95.258726][ T9769] RBP: 00000000006ca018 R08: 0000000000000001 R09: 00000000004002c8 [ 95.267217][ T9769] R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000401f30 [ 95.276482][ T9769] R13: 0000000000401fc0 R14: 0000000000000000 R15: 0000000000000000 [ 95.285215][ T9769] Modules linked in: [ 95.290094][ T9769] ---[ end trace 582f2397508a6c89 ]--- [ 95.296204][ T9769] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 95.304315][ T9769] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 20 67 71 88 e8 50 bd be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 80 67 71 88 e8 3c bd be fd <0f> 0b 4c 89 f6 48 c7 c7 40 68 71 88 e8 2b bd be fd 0f 0b cc cc cc [ 95.325418][ T9769] RSP: 0018:ffffc9000208f338 EFLAGS: 00010286 [ 95.332022][ T9769] RAX: 000000000000004e RBX: ffff8880a3e12300 RCX: 0000000000000000 [ 95.341041][ T9769] RDX: 0000000000000000 RSI: ffffffff815e5e56 RDI: fffff52000411e59 [ 95.350299][ T9769] RBP: ffffc9000208f350 R08: 000000000000004e R09: ffffed1015d06621 [ 95.358911][ T9769] R10: ffffed1015d06620 R11: ffff8880ae833107 R12: dead000000000122 [ 95.367180][ T9769] R13: ffff8880a8237d70 R14: ffff8880a3e12300 R15: ffff8880a3e12308 [ 95.375906][ T9769] FS: 000000000162e880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 95.385663][ T9769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.392626][ T9769] CR2: 0000000020000280 CR3: 00000000961f1000 CR4: 00000000001406f0 [ 95.406493][ T9769] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.414859][ T9769] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.423268][ T9769] Kernel panic - not syncing: Fatal exception [ 95.431309][ T9769] Kernel Offset: disabled [ 95.435760][ T9769] Rebooting in 86400 seconds..