[ 80.188624][ T26] audit: type=1800 audit(1579479699.261:25): pid=9746 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 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. [ 81.105005][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 81.105018][ T26] audit: type=1800 audit(1579479700.181:29): pid=9746 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 [ 81.133594][ T26] audit: type=1800 audit(1579479700.181:30): pid=9746 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 '10.128.0.135' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 90.610159][ T9930] list_del corruption, ffff88809fb09c00->prev is LIST_POISON2 (dead000000000122) [ 90.629513][ T9930] ------------[ cut here ]------------ [ 90.635037][ T9930] kernel BUG at lib/list_debug.c:48! [ 90.647262][ T9930] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 90.653361][ T9930] CPU: 1 PID: 9930 Comm: syz-executor274 Not tainted 5.5.0-rc5-syzkaller #0 [ 90.662015][ T9930] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.672125][ T9930] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 90.678628][ T9930] 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 [ 90.698404][ T9930] RSP: 0018:ffffc90002137478 EFLAGS: 00010282 [ 90.704467][ T9930] RAX: 000000000000004e RBX: ffff88809fb09c00 RCX: 0000000000000000 [ 90.712430][ T9930] RDX: 0000000000000000 RSI: ffffffff815e53a6 RDI: fffff52000426e81 [ 90.720504][ T9930] RBP: ffffc90002137490 R08: 000000000000004e R09: ffffed1015d26621 [ 90.728614][ T9930] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 90.736573][ T9930] R13: ffffffff8a4c7270 R14: ffff88809fb09c00 R15: ffff8880a7d22800 [ 90.744543][ T9930] FS: 00007f559a13f700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 90.753461][ T9930] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.760117][ T9930] CR2: 00007ffe2554eef0 CR3: 00000000a2f93000 CR4: 00000000001406e0 [ 90.768076][ T9930] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.776432][ T9930] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.784398][ T9930] Call Trace: [ 90.787677][ T9930] __nf_tables_abort+0x1e53/0x2a50 [ 90.792776][ T9930] ? nfnl_err_del+0x115/0x170 [ 90.797611][ T9930] nf_tables_abort+0x17/0x30 [ 90.802209][ T9930] nfnetlink_rcv_batch+0xa5d/0x17a0 [ 90.807531][ T9930] ? nf_tables_delobj+0x8f0/0x8f0 [ 90.812554][ T9930] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 90.818345][ T9930] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.824581][ T9930] ? apparmor_capable+0x497/0x900 [ 90.829607][ T9930] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.835859][ T9930] ? __nla_validate_parse+0x2d0/0x1ee0 [ 90.841314][ T9930] ? cap_capable+0x205/0x270 [ 90.845895][ T9930] ? nla_memcpy+0xb0/0xb0 [ 90.850221][ T9930] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.856461][ T9930] ? ns_capable_common+0x93/0x100 [ 90.861726][ T9930] ? __nla_parse+0x43/0x60 [ 90.866236][ T9930] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 90.872114][ T9930] nfnetlink_rcv+0x3e7/0x460 [ 90.876695][ T9930] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 90.882144][ T9930] ? netlink_deliver_tap+0x24a/0xbe0 [ 90.887487][ T9930] ? __kasan_check_write+0x14/0x20 [ 90.892587][ T9930] netlink_unicast+0x58c/0x7d0 [ 90.897334][ T9930] ? netlink_attachskb+0x870/0x870 [ 90.902476][ T9930] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 90.908332][ T9930] ? __check_object_size+0x3d/0x437 [ 90.913628][ T9930] netlink_sendmsg+0x91c/0xea0 [ 90.918378][ T9930] ? netlink_unicast+0x7d0/0x7d0 [ 90.923299][ T9930] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 90.928937][ T9930] ? apparmor_socket_sendmsg+0x2a/0x30 [ 90.934383][ T9930] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.940621][ T9930] ? security_socket_sendmsg+0x8d/0xc0 [ 90.946502][ T9930] ? netlink_unicast+0x7d0/0x7d0 [ 90.951438][ T9930] sock_sendmsg+0xd7/0x130 [ 90.955878][ T9930] ____sys_sendmsg+0x753/0x880 [ 90.960627][ T9930] ? kernel_sendmsg+0x50/0x50 [ 90.965420][ T9930] ? __fget+0x35d/0x550 [ 90.969558][ T9930] ? find_held_lock+0x35/0x130 [ 90.974318][ T9930] ___sys_sendmsg+0x100/0x170 [ 90.979014][ T9930] ? sendmsg_copy_msghdr+0x70/0x70 [ 90.984140][ T9930] ? __kasan_check_read+0x11/0x20 [ 90.989170][ T9930] ? ksys_dup3+0x3e0/0x3e0 [ 90.993632][ T9930] ? __fget_light+0x1a9/0x230 [ 90.998409][ T9930] ? __fdget+0x1b/0x20 [ 91.002473][ T9930] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.008970][ T9930] __sys_sendmsg+0x105/0x1d0 [ 91.013577][ T9930] ? __sys_sendmsg_sock+0xc0/0xc0 [ 91.018602][ T9930] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 91.024123][ T9930] ? do_syscall_64+0x26/0x790 [ 91.028792][ T9930] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.034843][ T9930] ? do_syscall_64+0x26/0x790 [ 91.039527][ T9930] __x64_sys_sendmsg+0x78/0xb0 [ 91.044300][ T9930] do_syscall_64+0xfa/0x790 [ 91.048795][ T9930] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.054676][ T9930] RIP: 0033:0x446c09 [ 91.058692][ T9930] Code: e8 0c e8 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 91.078323][ T9930] RSP: 002b:00007f559a13ed98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 91.086771][ T9930] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446c09 [ 91.094877][ T9930] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 [ 91.102846][ T9930] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 91.110806][ T9930] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 91.118767][ T9930] R13: 000000200a000000 R14: 0000000000006c00 R15: 0000001000000014 [ 91.126851][ T9930] Modules linked in: [ 91.130938][ T9930] ---[ end trace bb2ba21f32651ed3 ]--- [ 91.136409][ T9930] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 91.143029][ T9930] 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 [ 91.162806][ T9930] RSP: 0018:ffffc90002137478 EFLAGS: 00010282 [ 91.168884][ T9930] RAX: 000000000000004e RBX: ffff88809fb09c00 RCX: 0000000000000000 [ 91.176903][ T9930] RDX: 0000000000000000 RSI: ffffffff815e53a6 RDI: fffff52000426e81 [ 91.185028][ T9930] RBP: ffffc90002137490 R08: 000000000000004e R09: ffffed1015d26621 [ 91.193124][ T9930] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 91.201158][ T9930] R13: ffffffff8a4c7270 R14: ffff88809fb09c00 R15: ffff8880a7d22800 [ 91.209126][ T9930] FS: 00007f559a13f700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 91.218086][ T9930] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.224756][ T9930] CR2: 00007ffe2554eef0 CR3: 00000000a2f93000 CR4: 00000000001406e0 [ 91.233014][ T9930] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.241200][ T9930] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.249177][ T9930] Kernel panic - not syncing: Fatal exception [ 91.257097][ T9930] Kernel Offset: disabled [ 91.261547][ T9930] Rebooting in 86400 seconds..