[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.158' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 54.901447] list_del corruption, ffff8880b01d7a70->next is LIST_POISON1 (dead000000000100) [ 54.910305] ------------[ cut here ]------------ [ 54.915050] kernel BUG at lib/list_debug.c:45! [ 54.919622] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 54.924964] CPU: 0 PID: 8092 Comm: syz-executor112 Not tainted 4.19.211-syzkaller #0 [ 54.932818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.942157] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 54.947845] 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 [ 54.966724] RSP: 0018:ffff8880b01d7950 EFLAGS: 00010086 [ 54.972324] RAX: 000000000000004e RBX: ffff8880b01d7a58 RCX: 0000000000000000 [ 54.979577] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101603af1c [ 54.986824] RBP: ffff8880b01d7a70 R08: 000000000000004e R09: 0000000000000000 [ 54.994073] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 55.001323] R13: dead000000000100 R14: ffff8880b01d7a78 R15: 0000000000000007 [ 55.008581] FS: 00007fc60ed84700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 55.016784] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.022645] CR2: 0000000020200000 CR3: 00000000b4a15000 CR4: 00000000003406f0 [ 55.029896] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.037166] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.044424] Call Trace: [ 55.047002] remove_wait_queue+0x2c/0x180 [ 55.051129] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 55.055719] __tipc_sendstream+0x373/0x9d0 [ 55.059935] ? tipc_sendmsg+0x70/0x70 [ 55.063713] ? do_wait_intr_irq+0x270/0x270 [ 55.068024] ? mark_held_locks+0xa6/0xf0 [ 55.072069] ? __local_bh_enable_ip+0x159/0x270 [ 55.076717] tipc_sendstream+0x4c/0x70 [ 55.080586] ? __tipc_sendstream+0x9d0/0x9d0 [ 55.084982] sock_sendmsg+0xc3/0x120 [ 55.088673] ___sys_sendmsg+0x7bb/0x8e0 [ 55.092626] ? copy_msghdr_from_user+0x440/0x440 [ 55.097362] ? __fget+0x32f/0x510 [ 55.100795] ? lock_downgrade+0x720/0x720 [ 55.104925] ? check_preemption_disabled+0x41/0x280 [ 55.109919] ? check_preemption_disabled+0x41/0x280 [ 55.114916] ? __fget+0x356/0x510 [ 55.118347] ? do_dup2+0x450/0x450 [ 55.121864] ? __fdget+0x1d0/0x230 [ 55.125391] __x64_sys_sendmsg+0x132/0x220 [ 55.129608] ? __sys_sendmsg+0x1b0/0x1b0 [ 55.133654] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 55.138999] ? trace_hardirqs_off_caller+0x6e/0x210 [ 55.143995] ? do_syscall_64+0x21/0x620 [ 55.147954] do_syscall_64+0xf9/0x620 [ 55.151745] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.156912] RIP: 0033:0x7fc60ee14b79 [ 55.160605] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48 [ 55.179482] RSP: 002b:00007fc60ed84318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 55.187169] RAX: ffffffffffffffda RBX: 00007fc60ee9c428 RCX: 00007fc60ee14b79 [ 55.194416] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 [ 55.201664] RBP: 00007fc60ee9c420 R08: 00007fc60ed84700 R09: 0000000000000000 [ 55.209084] R10: 00007fc60ed84700 R11: 0000000000000246 R12: 00007fc60ee6a074 [ 55.216331] R13: 00007ffcf25c130f R14: 00007fc60ed84400 R15: 0000000000022000 [ 55.223578] Modules linked in: [ 55.226760] ---[ end trace 54124d79add8fb53 ]--- [ 55.231504] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 55.237190] 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 [ 55.256067] RSP: 0018:ffff8880b01d7950 EFLAGS: 00010086 [ 55.261407] RAX: 000000000000004e RBX: ffff8880b01d7a58 RCX: 0000000000000000 [ 55.268652] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101603af1c [ 55.275904] RBP: ffff8880b01d7a70 R08: 000000000000004e R09: 0000000000000000 [ 55.283152] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 55.290398] R13: dead000000000100 R14: ffff8880b01d7a78 R15: 0000000000000007 [ 55.297648] FS: 00007fc60ed84700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 55.305937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.311794] CR2: 0000000020200000 CR3: 00000000b4a15000 CR4: 00000000003406f0 [ 55.319070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.326320] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.333570] Kernel panic - not syncing: Fatal exception [ 55.338978] Kernel Offset: disabled [ 55.342590] Rebooting in 86400 seconds..