[ 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 '10.128.0.56' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 35.530634] list_del corruption, ffff888095777738->next is LIST_POISON1 (dead000000000100) [ 35.539399] ------------[ cut here ]------------ [ 35.544138] kernel BUG at lib/list_debug.c:45! [ 35.548709] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 35.554054] CPU: 0 PID: 8096 Comm: syz-executor155 Not tainted 4.19.211-syzkaller #0 [ 35.561912] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 35.571254] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 35.576941] 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 [ 35.595826] RSP: 0018:ffff888095777610 EFLAGS: 00010086 [ 35.601165] RAX: 000000000000004e RBX: ffff888095777720 RCX: 0000000000000000 [ 35.608410] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012aeeeb4 [ 35.615656] RBP: ffff888095777738 R08: 000000000000004e R09: 0000000000000000 [ 35.622902] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 35.630150] R13: dead000000000100 R14: ffff888095777740 R15: 0000000000000007 [ 35.637411] FS: 00007f7479ef7700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.645612] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.651470] CR2: 0000000020400030 CR3: 00000000ae5d4000 CR4: 00000000003406f0 [ 35.658727] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.665973] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.673231] Call Trace: [ 35.675804] remove_wait_queue+0x2c/0x180 [ 35.679933] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.684495] tipc_send_group_bcast+0x317/0xa10 [ 35.689065] ? tipc_shutdown+0x310/0x310 [ 35.693106] ? __lock_acquire+0x6de/0x3ff0 [ 35.697325] ? do_wait_intr_irq+0x270/0x270 [ 35.701625] ? mark_held_locks+0xf0/0xf0 [ 35.705667] ? __lock_acquire+0x6de/0x3ff0 [ 35.709881] __tipc_sendmsg+0xa2b/0x1320 [ 35.713922] ? mark_held_locks+0xf0/0xf0 [ 35.717963] ? rw_copy_check_uvector+0x27c/0x340 [ 35.722704] ? tipc_sendmcast+0xba0/0xba0 [ 35.726837] ? lock_sock_nested+0xa6/0x110 [ 35.731052] ? mark_held_locks+0xa6/0xf0 [ 35.735089] ? __local_bh_enable_ip+0x159/0x270 [ 35.739738] tipc_sendmsg+0x4c/0x70 [ 35.743342] ? __tipc_sendmsg+0x1320/0x1320 [ 35.747649] sock_sendmsg+0xc3/0x120 [ 35.751347] ___sys_sendmsg+0x3b3/0x8e0 [ 35.755349] ? copy_msghdr_from_user+0x440/0x440 [ 35.760086] ? __fget+0x32f/0x510 [ 35.763516] ? lock_downgrade+0x720/0x720 [ 35.767642] ? check_preemption_disabled+0x41/0x280 [ 35.772634] ? check_preemption_disabled+0x41/0x280 [ 35.777627] ? __fget+0x356/0x510 [ 35.781055] ? do_dup2+0x450/0x450 [ 35.784573] ? do_futex+0x171/0x1880 [ 35.788264] ? __fdget+0x1d0/0x230 [ 35.791780] __sys_sendmmsg+0x195/0x470 [ 35.795734] ? __ia32_sys_sendmsg+0x220/0x220 [ 35.800204] ? __local_bh_enable_ip+0x159/0x270 [ 35.804864] ? tipc_setsockopt+0x50a/0x9f0 [ 35.809087] ? __se_sys_futex+0x28f/0x3b0 [ 35.813211] ? __se_sys_futex+0x298/0x3b0 [ 35.817353] ? do_futex+0x1880/0x1880 [ 35.821143] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 35.826485] __x64_sys_sendmmsg+0x99/0x100 [ 35.830697] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.835258] do_syscall_64+0xf9/0x620 [ 35.839037] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.844201] RIP: 0033:0x7f7479f66cb9 [ 35.847890] 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 [ 35.866766] RSP: 002b:00007f7479ef7318 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 35.874450] RAX: ffffffffffffffda RBX: 00007f7479fee438 RCX: 00007f7479f66cb9 [ 35.881694] RDX: 0000000000000001 RSI: 00000000200030c0 RDI: 0000000000000005 [ 35.888938] RBP: 00007f7479fee430 R08: 0000000000000000 R09: 0000000000000000 [ 35.896181] R10: 9200000000000000 R11: 0000000000000246 R12: 00007f7479fbc074 [ 35.903424] R13: 00007ffe0178e2ef R14: 00007f7479ef7400 R15: 0000000000022000 [ 35.910670] Modules linked in: [ 35.913845] ---[ end trace 3aedf9ca899f16ca ]--- [ 35.918581] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 35.924267] 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 [ 35.943140] RSP: 0018:ffff888095777610 EFLAGS: 00010086 [ 35.948479] RAX: 000000000000004e RBX: ffff888095777720 RCX: 0000000000000000 [ 35.955723] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012aeeeb4 [ 35.962967] RBP: ffff888095777738 R08: 000000000000004e R09: 0000000000000000 [ 35.970221] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 35.977471] R13: dead000000000100 R14: ffff888095777740 R15: 0000000000000007 [ 35.984721] FS: 00007f7479ef7700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 35.992921] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.998777] CR2: 0000000020400030 CR3: 00000000ae5d4000 CR4: 00000000003406f0 [ 36.006028] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.013291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.020539] Kernel panic - not syncing: Fatal exception [ 36.026039] Kernel Offset: disabled [ 36.029661] Rebooting in 86400 seconds..