[ 83.656628][ T27] audit: type=1800 audit(1579539550.810:25): pid=9607 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. [ 84.750518][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 84.750529][ T27] audit: type=1800 audit(1579539551.910:29): pid=9607 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 [ 84.778199][ T27] audit: type=1800 audit(1579539551.910:30): pid=9607 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 '10.128.0.184' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 99.792915][ T9771] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 99.803755][ T9779] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 99.814656][ T9775] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 99.860573][ T9776] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 99.950292][ T9777] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 100.000409][ T9778] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. executing program executing program executing program executing program executing program executing program executing program [ 100.400412][ T9796] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 100.415542][ T9798] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 100.432056][ T9801] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 100.446505][ T9804] netlink: 20 bytes leftover after parsing attributes in process `syz-executor212'. [ 100.473219][ T9796] list_del corruption, ffff8880975b5800->prev is LIST_POISON2 (dead000000000122) [ 100.484630][ T9796] ------------[ cut here ]------------ [ 100.491351][ T9796] kernel BUG at lib/list_debug.c:48! [ 100.498904][ T9796] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 100.506119][ T9796] CPU: 0 PID: 9796 Comm: syz-executor212 Not tainted 5.5.0-rc7-syzkaller #0 [ 100.517177][ T9796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.531602][ T9796] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 100.539964][ T9796] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 69 71 88 e8 00 df be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 c0 69 71 88 e8 ec de be fd <0f> 0b 4c 89 f6 48 c7 c7 80 6a 71 88 e8 db de be fd 0f 0b cc cc cc [ 100.566956][ T9796] RSP: 0018:ffffc90002187468 EFLAGS: 00010286 [ 100.573463][ T9796] RAX: 000000000000004e RBX: ffff8880975b5800 RCX: 0000000000000000 [ 100.582478][ T9796] RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000430e7f [ 100.591237][ T9796] RBP: ffffc90002187480 R08: 000000000000004e R09: ffffed1015d26621 [ 100.601963][ T9796] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 100.611569][ T9796] R13: ffff8880a00db000 R14: ffff8880975b5800 R15: ffff88809f583880 [ 100.620679][ T9796] FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000f7f4cb40 [ 100.630310][ T9796] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 100.638398][ T9796] CR2: 00007ffc7c19bfd0 CR3: 000000009a846000 CR4: 00000000001406f0 [ 100.646586][ T9796] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.655963][ T9796] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.665124][ T9796] Call Trace: [ 100.668454][ T9796] __nf_tables_abort+0x1e53/0x2a50 [ 100.674839][ T9796] ? nfnl_err_del+0x115/0x170 [ 100.680418][ T9796] nf_tables_abort+0x17/0x30 [ 100.685710][ T9796] nfnetlink_rcv_batch+0xa5d/0x17a0 [ 100.691278][ T9796] ? nf_tables_delobj+0x8f0/0x8f0 [ 100.697961][ T9796] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 100.704541][ T9796] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.711168][ T9796] ? apparmor_capable+0x497/0x900 [ 100.716974][ T9796] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.724325][ T9796] ? __nla_validate_parse+0x2d0/0x1ee0 [ 100.730868][ T9796] ? cap_capable+0x205/0x270 [ 100.735905][ T9796] ? nla_memcpy+0xb0/0xb0 [ 100.741470][ T9796] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.748994][ T9796] ? ns_capable_common+0x93/0x100 [ 100.754985][ T9796] ? __nla_parse+0x43/0x60 [ 100.760547][ T9796] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 100.766278][ T9796] nfnetlink_rcv+0x3e7/0x460 [ 100.771100][ T9796] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 100.776961][ T9796] ? netlink_deliver_tap+0x24a/0xbe0 [ 100.782415][ T9796] ? __kasan_check_write+0x14/0x20 [ 100.788520][ T9796] netlink_unicast+0x58c/0x7d0 [ 100.794036][ T9796] ? netlink_attachskb+0x870/0x870 [ 100.799405][ T9796] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 100.806853][ T9796] ? __check_object_size+0x3d/0x437 [ 100.812972][ T9796] netlink_sendmsg+0x91c/0xea0 [ 100.818466][ T9796] ? netlink_unicast+0x7d0/0x7d0 [ 100.824030][ T9796] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 100.830906][ T9796] ? apparmor_socket_sendmsg+0x2a/0x30 [ 100.837404][ T9796] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.843986][ T9796] ? security_socket_sendmsg+0x8d/0xc0 [ 100.849452][ T9796] ? netlink_unicast+0x7d0/0x7d0 [ 100.854818][ T9796] sock_sendmsg+0xd7/0x130 [ 100.859388][ T9796] ____sys_sendmsg+0x753/0x880 [ 100.864565][ T9796] ? kernel_sendmsg+0x50/0x50 [ 100.869561][ T9796] ? find_held_lock+0x35/0x130 [ 100.874531][ T9796] ___sys_sendmsg+0x100/0x170 [ 100.879735][ T9796] ? sendmsg_copy_msghdr+0x70/0x70 [ 100.885483][ T9796] ? __kasan_check_read+0x11/0x20 [ 100.891940][ T9796] ? __fget+0x37f/0x550 [ 100.896279][ T9796] ? ksys_dup3+0x3e0/0x3e0 [ 100.901049][ T9796] ? __do_page_fault+0x56a/0xd80 [ 100.906118][ T9796] ? __fget_light+0x1a9/0x230 [ 100.911712][ T9796] ? __fdget+0x1b/0x20 [ 100.916475][ T9796] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 100.925113][ T9796] __sys_sendmsg+0x105/0x1d0 [ 100.930806][ T9796] ? __sys_sendmsg_sock+0xc0/0xc0 [ 100.936067][ T9796] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 100.942925][ T9796] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 100.948605][ T9796] ? do_fast_syscall_32+0xd1/0xe16 [ 100.958504][ T9796] ? entry_SYSENTER_compat+0x70/0x7f [ 100.963971][ T9796] ? do_fast_syscall_32+0xd1/0xe16 [ 100.969256][ T9796] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 100.975321][ T9796] do_fast_syscall_32+0x27b/0xe16 [ 100.980893][ T9796] entry_SYSENTER_compat+0x70/0x7f [ 100.986628][ T9796] RIP: 0023:0xf7f509a9 [ 100.991020][ T9796] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 101.013421][ T9796] RSP: 002b:00000000f7f4c12c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 101.022472][ T9796] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000280 [ 101.031363][ T9796] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000080fe000 [ 101.039777][ T9796] RBP: 00000000080fe00c R08: 0000000000000000 R09: 0000000000000000 [ 101.048961][ T9796] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 101.057770][ T9796] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 101.066154][ T9796] Modules linked in: [ 101.072057][ T9796] ---[ end trace 8edbd5b392694fea ]--- [ 101.078019][ T9796] RIP: 0010:__list_del_entry_valid.cold+0x37/0x4f [ 101.085079][ T9796] Code: be fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 60 69 71 88 e8 00 df be fd 0f 0b 4c 89 e2 4c 89 f6 48 c7 c7 c0 69 71 88 e8 ec de be fd <0f> 0b 4c 89 f6 48 c7 c7 80 6a 71 88 e8 db de be fd 0f 0b cc cc cc [ 101.106098][ T9796] RSP: 0018:ffffc90002187468 EFLAGS: 00010286 [ 101.112450][ T9796] RAX: 000000000000004e RBX: ffff8880975b5800 RCX: 0000000000000000 [ 101.121104][ T9796] RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff52000430e7f [ 101.129719][ T9796] RBP: ffffc90002187480 R08: 000000000000004e R09: ffffed1015d26621 [ 101.140012][ T9796] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: dead000000000122 [ 101.148631][ T9796] R13: ffff8880a00db000 R14: ffff8880975b5800 R15: ffff88809f583880 [ 101.157479][ T9796] FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000f7f4cb40 [ 101.167086][ T9796] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 101.175494][ T9796] CR2: 00007ffc7c19bfd0 CR3: 000000009a846000 CR4: 00000000001406f0 [ 101.184081][ T9796] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.193307][ T9796] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 101.201814][ T9796] Kernel panic - not syncing: Fatal exception [ 101.209811][ T9796] Kernel Offset: disabled [ 101.214515][ T9796] Rebooting in 86400 seconds..