[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.310604] list_del corruption, ffff8880b2eefa90->next is LIST_POISON1 (dead000000000100) [ 42.319305] ------------[ cut here ]------------ [ 42.324053] kernel BUG at lib/list_debug.c:45! [ 42.328620] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 42.333962] CPU: 0 PID: 8092 Comm: syz-executor308 Not tainted 4.19.211-syzkaller #0 [ 42.341837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.351176] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 42.356866] Code: e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 e3 b3 88 e8 d8 42 f7 ff 0f 0b [ 42.375754] RSP: 0018:ffff8880b2eef970 EFLAGS: 00010086 [ 42.381136] RAX: 000000000000004e RBX: ffff8880b2eefa78 RCX: 0000000000000000 [ 42.388388] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10165ddf20 [ 42.395639] RBP: ffff8880b2eefa90 R08: 000000000000004e R09: 0000000000000000 [ 42.402899] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 42.410147] R13: dead000000000100 R14: ffff8880b2eefa98 R15: 0000000000000007 [ 42.417408] FS: 0000555555c59300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 42.425623] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.431486] CR2: 0000000020200000 CR3: 00000000b2a3f000 CR4: 00000000003406f0 [ 42.438753] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.446001] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.453261] Call Trace: [ 42.455833] remove_wait_queue+0x2c/0x180 [ 42.459981] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 42.464544] __tipc_sendstream+0x373/0x9d0 [ 42.468776] ? tipc_sendmsg+0x70/0x70 [ 42.472558] ? do_wait_intr_irq+0x270/0x270 [ 42.476863] ? __local_bh_enable_ip+0x159/0x270 [ 42.481518] tipc_sendstream+0x4c/0x70 [ 42.485384] ? __tipc_sendstream+0x9d0/0x9d0 [ 42.489779] sock_sendmsg+0xc3/0x120 [ 42.493498] sock_write_iter+0x287/0x3c0 [ 42.497553] ? sock_sendmsg+0x120/0x120 [ 42.501510] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 42.506071] ? tipc_connect+0x17e/0x690 [ 42.510168] ? __local_bh_enable_ip+0x159/0x270 [ 42.514817] ? tipc_connect+0x183/0x690 [ 42.518772] __vfs_write+0x51b/0x770 [ 42.522469] ? kernel_read+0x110/0x110 [ 42.526338] ? security_file_permission+0x1c0/0x220 [ 42.531334] vfs_write+0x1f3/0x540 [ 42.534851] ksys_write+0x12b/0x2a0 [ 42.538459] ? __ia32_sys_read+0xb0/0xb0 [ 42.542503] ? trace_hardirqs_off_caller+0x6e/0x210 [ 42.547508] ? do_syscall_64+0x21/0x620 [ 42.551461] do_syscall_64+0xf9/0x620 [ 42.555260] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.560431] RIP: 0033:0x7faa9bf1bd59 [ 42.564124] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 42.583363] RSP: 002b:00007fff4610dd08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.591050] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faa9bf1bd59 [ 42.598302] RDX: 000000002000011a RSI: 0000000020000040 RDI: 0000000000000003 [ 42.605563] RBP: 0000000000000000 R08: 00007fff4610dea8 R09: 00007fff4610dea8 [ 42.612813] R10: 00007fff4610dea8 R11: 0000000000000246 R12: 00007faa9bedf5e0 [ 42.620067] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 42.627316] Modules linked in: [ 42.630494] ---[ end trace 1d9ea8612a7874b4 ]--- [ 42.635246] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 42.640936] Code: e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 e3 b3 88 e8 d8 42 f7 ff 0f 0b [ 42.659819] RSP: 0018:ffff8880b2eef970 EFLAGS: 00010086 [ 42.665161] RAX: 000000000000004e RBX: ffff8880b2eefa78 RCX: 0000000000000000 [ 42.672587] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10165ddf20 [ 42.679835] RBP: ffff8880b2eefa90 R08: 000000000000004e R09: 0000000000000000 [ 42.687096] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 42.694438] R13: dead000000000100 R14: ffff8880b2eefa98 R15: 0000000000000007 [ 42.701684] FS: 0000555555c59300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 42.709886] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.715744] CR2: 0000000020200000 CR3: 00000000b2a3f000 CR4: 00000000003406f0 [ 42.723009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.730264] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.737510] Kernel panic - not syncing: Fatal exception [ 42.743028] Kernel Offset: disabled [ 42.746635] Rebooting in 86400 seconds..