[ 88.150952][ T27] audit: type=1800 audit(1579376246.074:30): pid=9631 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 '10.128.0.5' (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: [ 98.272744][ T9819] list_del corruption, ffff888094962c00->prev is LIST_POISON2 (dead000000000122) [ 98.298454][ T9819] ------------[ cut here ]------------ [ 98.304162][ T9819] kernel BUG at lib/list_debug.c:48! [ 98.310285][ T9819] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 98.316955][ T9819] CPU: 1 PID: 9819 Comm: syz-executor877 Not tainted 5.5.0-rc5-syzkaller #0 [ 98.325820][ T9819] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.336400][ T9819] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 98.342914][ T9819] 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 [ 98.362686][ T9819] RSP: 0018:ffffc900022d7478 EFLAGS: 00010282 [ 98.368835][ T9819] RAX: 000000000000004e RBX: ffff888094962c00 RCX: 0000000000000000 [ 98.376807][ T9819] RDX: 0000000000000000 RSI: ffffffff815e53a6 RDI: fffff5200045ae81 [ 98.384983][ T9819] RBP: ffffc900022d7490 R08: 000000000000004e R09: ffffed1015d26621 [ 98.392962][ T9819] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 98.401044][ T9819] R13: ffffffff8a4c7270 R14: ffff888094962c00 R15: ffff888092185d00 [ 98.409476][ T9819] FS: 00007f4f5476b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 98.418493][ T9819] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 98.425071][ T9819] CR2: 00007ffd3a400d7c CR3: 000000009ef27000 CR4: 00000000001406e0 [ 98.433569][ T9819] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 98.441776][ T9819] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 98.449770][ T9819] Call Trace: [ 98.453271][ T9819] __nf_tables_abort+0x1e53/0x2a50 [ 98.458661][ T9819] ? nfnl_err_del+0x115/0x170 [ 98.463368][ T9819] nf_tables_abort+0x17/0x30 [ 98.468129][ T9819] nfnetlink_rcv_batch+0xa5d/0x17a0 [ 98.473437][ T9819] ? nf_tables_delobj+0x8f0/0x8f0 [ 98.478592][ T9819] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 98.484506][ T9819] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.491054][ T9819] ? apparmor_capable+0x497/0x900 [ 98.496171][ T9819] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.502573][ T9819] ? __nla_validate_parse+0x2d0/0x1ee0 [ 98.508233][ T9819] ? cap_capable+0x205/0x270 [ 98.512958][ T9819] ? nla_memcpy+0xb0/0xb0 [ 98.517309][ T9819] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.524657][ T9819] ? ns_capable_common+0x93/0x100 [ 98.530005][ T9819] ? __nla_parse+0x43/0x60 [ 98.534615][ T9819] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 98.540953][ T9819] nfnetlink_rcv+0x3e7/0x460 [ 98.545563][ T9819] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 98.551037][ T9819] ? netlink_deliver_tap+0x24a/0xbe0 [ 98.556499][ T9819] ? __kasan_check_write+0x14/0x20 [ 98.561607][ T9819] netlink_unicast+0x58c/0x7d0 [ 98.566412][ T9819] ? netlink_attachskb+0x870/0x870 [ 98.571514][ T9819] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 98.577360][ T9819] ? __check_object_size+0x3d/0x437 [ 98.582556][ T9819] netlink_sendmsg+0x91c/0xea0 [ 98.587566][ T9819] ? netlink_unicast+0x7d0/0x7d0 [ 98.593121][ T9819] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 98.598881][ T9819] ? apparmor_socket_sendmsg+0x2a/0x30 [ 98.605134][ T9819] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.611546][ T9819] ? security_socket_sendmsg+0x8d/0xc0 [ 98.617117][ T9819] ? netlink_unicast+0x7d0/0x7d0 [ 98.622512][ T9819] sock_sendmsg+0xd7/0x130 [ 98.626940][ T9819] ____sys_sendmsg+0x753/0x880 [ 98.632105][ T9819] ? kernel_sendmsg+0x50/0x50 [ 98.636787][ T9819] ? __fget+0x35d/0x550 [ 98.640964][ T9819] ? find_held_lock+0x35/0x130 [ 98.645730][ T9819] ___sys_sendmsg+0x100/0x170 [ 98.650524][ T9819] ? sendmsg_copy_msghdr+0x70/0x70 [ 98.655835][ T9819] ? __kasan_check_read+0x11/0x20 [ 98.661211][ T9819] ? __fget+0x37f/0x550 [ 98.665382][ T9819] ? ksys_dup3+0x3e0/0x3e0 [ 98.669788][ T9819] ? __do_page_fault+0x56a/0xd80 [ 98.674764][ T9819] ? __fget_light+0x1a9/0x230 [ 98.679573][ T9819] ? __fdget+0x1b/0x20 [ 98.683746][ T9819] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 98.689980][ T9819] __sys_sendmsg+0x105/0x1d0 [ 98.694717][ T9819] ? __sys_sendmsg_sock+0xc0/0xc0 [ 98.699849][ T9819] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 98.705877][ T9819] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 98.711335][ T9819] ? do_syscall_64+0x26/0x790 [ 98.716144][ T9819] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 98.722830][ T9819] ? do_syscall_64+0x26/0x790 [ 98.727721][ T9819] __x64_sys_sendmsg+0x78/0xb0 [ 98.732505][ T9819] do_syscall_64+0xfa/0x790 [ 98.737005][ T9819] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 98.742902][ T9819] RIP: 0033:0x447339 [ 98.746792][ T9819] 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 [ 98.766474][ T9819] RSP: 002b:00007f4f5476ace8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 98.775176][ T9819] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000447339 [ 98.783550][ T9819] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 98.791539][ T9819] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 98.800473][ T9819] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc2c [ 98.808436][ T9819] R13: 00007ffd9964d6ef R14: 00007f4f5476b9c0 R15: 00000000006dcc20 [ 98.816541][ T9819] Modules linked in: [ 98.822053][ T9819] ---[ end trace ff4d4cbbe330f254 ]--- [ 98.827777][ T9819] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 98.834374][ T9819] 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 [ 98.854984][ T9819] RSP: 0018:ffffc900022d7478 EFLAGS: 00010282 [ 98.861193][ T9819] RAX: 000000000000004e RBX: ffff888094962c00 RCX: 0000000000000000 [ 98.869333][ T9819] RDX: 0000000000000000 RSI: ffffffff815e53a6 RDI: fffff5200045ae81 [ 98.877371][ T9819] RBP: ffffc900022d7490 R08: 000000000000004e R09: ffffed1015d26621 [ 98.885342][ T9819] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 98.893646][ T9819] R13: ffffffff8a4c7270 R14: ffff888094962c00 R15: ffff888092185d00 [ 98.901676][ T9819] FS: 00007f4f5476b700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 98.910747][ T9819] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 98.917751][ T9819] CR2: 00007f4f54749db8 CR3: 000000009ef27000 CR4: 00000000001406e0 [ 98.926933][ T9819] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 98.935134][ T9819] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 98.943438][ T9819] Kernel panic - not syncing: Fatal exception [ 98.951660][ T9819] Kernel Offset: disabled [ 98.956004][ T9819] Rebooting in 86400 seconds..