[ 82.324706][ T27] audit: type=1800 audit(1579605651.218:26): pid=9659 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. [ 83.405456][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 83.405468][ T27] audit: type=1800 audit(1579605652.318:29): pid=9659 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 [ 83.432549][ T27] audit: type=1800 audit(1579605652.318:30): pid=9659 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 '10.128.0.53' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 109.031019][ T9821] list_del corruption, ffff88809f9b3c00->prev is LIST_POISON2 (dead000000000122) [ 109.040836][ T9821] ------------[ cut here ]------------ [ 109.046303][ T9821] kernel BUG at lib/list_debug.c:48! [ 109.051973][ T9821] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 109.058063][ T9821] CPU: 1 PID: 9821 Comm: syz-executor865 Not tainted 5.5.0-rc7-syzkaller #0 [ 109.066712][ T9821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 109.076791][ T9821] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 109.083198][ T9821] 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 [ 109.102840][ T9821] RSP: 0018:ffffc90002127478 EFLAGS: 00010282 [ 109.108903][ T9821] RAX: 000000000000004e RBX: ffff88809f9b3c00 RCX: 0000000000000000 [ 109.116863][ T9821] RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000424e81 [ 109.124907][ T9821] RBP: ffffc90002127490 R08: 000000000000004e R09: ffffed1015d26621 [ 109.132878][ T9821] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 109.140840][ T9821] R13: ffffffff8a4c74b0 R14: ffff88809f9b3c00 R15: ffff8880a6b55600 [ 109.148791][ T9821] FS: 00007f1a3d524700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 109.157702][ T9821] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 109.164265][ T9821] CR2: 00007ffedd230b70 CR3: 00000000a9a76000 CR4: 00000000001406e0 [ 109.172226][ T9821] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 109.180186][ T9821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 109.188143][ T9821] Call Trace: [ 109.191416][ T9821] __nf_tables_abort+0x1e53/0x2a50 [ 109.196522][ T9821] nf_tables_abort+0x17/0x30 [ 109.201111][ T9821] nfnetlink_rcv_batch+0xa5d/0x17a0 [ 109.206304][ T9821] ? nf_tables_fill_flowtable_info.isra.0+0x1a1/0xaf0 [ 109.213045][ T9821] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 109.218847][ T9821] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 109.225080][ T9821] ? apparmor_capable+0x497/0x900 [ 109.230092][ T9821] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 109.236348][ T9821] ? __nla_validate_parse+0x2d0/0x1ee0 [ 109.241812][ T9821] ? cap_capable+0x205/0x270 [ 109.246422][ T9821] ? nla_memcpy+0xb0/0xb0 [ 109.250751][ T9821] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 109.256992][ T9821] ? ns_capable_common+0x93/0x100 [ 109.262008][ T9821] ? __nla_parse+0x43/0x60 [ 109.266542][ T9821] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 109.272320][ T9821] nfnetlink_rcv+0x3e7/0x460 [ 109.277032][ T9821] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 109.282474][ T9821] ? netlink_deliver_tap+0x24a/0xbe0 [ 109.287779][ T9821] ? __kasan_check_write+0x14/0x20 [ 109.292878][ T9821] netlink_unicast+0x58c/0x7d0 [ 109.297634][ T9821] ? netlink_attachskb+0x870/0x870 [ 109.302733][ T9821] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 109.308441][ T9821] ? __check_object_size+0x3d/0x437 [ 109.313747][ T9821] netlink_sendmsg+0x91c/0xea0 [ 109.318503][ T9821] ? netlink_unicast+0x7d0/0x7d0 [ 109.323429][ T9821] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 109.328973][ T9821] ? apparmor_socket_sendmsg+0x2a/0x30 [ 109.334593][ T9821] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 109.340832][ T9821] ? security_socket_sendmsg+0x8d/0xc0 [ 109.346284][ T9821] ? netlink_unicast+0x7d0/0x7d0 [ 109.351227][ T9821] sock_sendmsg+0xd7/0x130 [ 109.355739][ T9821] ____sys_sendmsg+0x753/0x880 [ 109.360494][ T9821] ? kernel_sendmsg+0x50/0x50 [ 109.365155][ T9821] ? __fget+0x35d/0x550 [ 109.369294][ T9821] ? find_held_lock+0x35/0x130 [ 109.374123][ T9821] ___sys_sendmsg+0x100/0x170 [ 109.378872][ T9821] ? sendmsg_copy_msghdr+0x70/0x70 [ 109.384000][ T9821] ? __kasan_check_read+0x11/0x20 [ 109.389015][ T9821] ? ksys_dup3+0x3e0/0x3e0 [ 109.393417][ T9821] ? __fget_light+0x1a9/0x230 [ 109.398084][ T9821] ? __fdget+0x1b/0x20 [ 109.402149][ T9821] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 109.408386][ T9821] __sys_sendmsg+0x105/0x1d0 [ 109.412986][ T9821] ? __sys_sendmsg_sock+0xc0/0xc0 [ 109.418034][ T9821] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 109.424001][ T9821] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 109.429451][ T9821] ? do_syscall_64+0x26/0x790 [ 109.434116][ T9821] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 109.440233][ T9821] ? do_syscall_64+0x26/0x790 [ 109.444901][ T9821] __x64_sys_sendmsg+0x78/0xb0 [ 109.449696][ T9821] do_syscall_64+0xfa/0x790 [ 109.454314][ T9821] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 109.460203][ T9821] RIP: 0033:0x4470f9 [ 109.464085][ T9821] Code: e8 dc e6 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 2b 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 109.483673][ T9821] RSP: 002b:00007f1a3d523d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 109.492179][ T9821] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 00000000004470f9 [ 109.500273][ T9821] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 [ 109.508249][ T9821] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 109.516231][ T9821] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc2c [ 109.524196][ T9821] R13: 000000200a000000 R14: 0000000000006c00 R15: 0000001000000014 [ 109.532154][ T9821] Modules linked in: [ 109.536908][ T9821] ---[ end trace 3026bc5f48d59d46 ]--- [ 109.542442][ T9821] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 109.548875][ T9821] 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 [ 109.568752][ T9821] RSP: 0018:ffffc90002127478 EFLAGS: 00010282 [ 109.574876][ T9821] RAX: 000000000000004e RBX: ffff88809f9b3c00 RCX: 0000000000000000 [ 109.582945][ T9821] RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000424e81 [ 109.590991][ T9821] RBP: ffffc90002127490 R08: 000000000000004e R09: ffffed1015d26621 [ 109.598978][ T9821] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 109.606991][ T9821] R13: ffffffff8a4c74b0 R14: ffff88809f9b3c00 R15: ffff8880a6b55600 [ 109.614999][ T9821] FS: 00007f1a3d524700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 109.624008][ T9821] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 109.630688][ T9821] CR2: 00007ffedd230b70 CR3: 00000000a9a76000 CR4: 00000000001406e0 [ 109.638724][ T9821] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 109.651031][ T9821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 109.659235][ T9821] Kernel panic - not syncing: Fatal exception [ 109.667062][ T9821] Kernel Offset: disabled [ 109.671760][ T9821] Rebooting in 86400 seconds..