[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.104' (ECDSA) to the list of known hosts. syzkaller login: [ 32.878204] IPVS: ftp: loaded support on port[0] = 21 [ 32.882919] IPVS: ftp: loaded support on port[0] = 21 [ 32.888043] IPVS: ftp: loaded support on port[0] = 21 [ 32.897075] IPVS: ftp: loaded support on port[0] = 21 [ 32.909123] IPVS: ftp: loaded support on port[0] = 21 [ 32.917992] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.208205] list_del corruption, ffff88809b817a70->next is LIST_POISON1 (dead000000000100) [ 34.216973] ------------[ cut here ]------------ [ 34.221714] kernel BUG at lib/list_debug.c:45! [ 34.226294] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 34.231647] CPU: 1 PID: 8345 Comm: syz-executor302 Not tainted 4.19.211-syzkaller #0 [ 34.239526] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 34.248868] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 34.254653] 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 [ 34.273565] RSP: 0000:ffff88809b817950 EFLAGS: 00010086 [ 34.278929] RAX: 000000000000004e RBX: ffff88809b817a58 RCX: 0000000000000000 [ 34.286193] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1013702f1c [ 34.293459] RBP: ffff88809b817a70 R08: 000000000000004e R09: 0000000000000000 [ 34.300726] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 34.307996] R13: dead000000000100 R14: ffff88809b817a78 R15: 0000000000000007 [ 34.315270] FS: 00007f73a89ab700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.323576] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.329438] CR2: 00007f73a89ed718 CR3: 0000000092eff000 CR4: 00000000003406e0 [ 34.336688] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.343936] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.351181] Call Trace: [ 34.353762] remove_wait_queue+0x2c/0x180 [ 34.357898] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.362469] __tipc_sendstream+0x373/0x9d0 [ 34.366692] ? tipc_sendmsg+0x70/0x70 [ 34.370474] ? do_wait_intr_irq+0x270/0x270 [ 34.374778] ? mark_held_locks+0xa6/0xf0 [ 34.378830] ? __local_bh_enable_ip+0x159/0x270 [ 34.383503] tipc_sendstream+0x4c/0x70 [ 34.387388] ? __tipc_sendstream+0x9d0/0x9d0 [ 34.391836] sock_sendmsg+0xc3/0x120 [ 34.395532] ___sys_sendmsg+0x7bb/0x8e0 [ 34.399485] ? copy_msghdr_from_user+0x440/0x440 [ 34.404223] ? __fget+0x32f/0x510 [ 34.407658] ? lock_downgrade+0x720/0x720 [ 34.411783] ? check_preemption_disabled+0x41/0x280 [ 34.416779] ? check_preemption_disabled+0x41/0x280 [ 34.421774] ? __fget+0x356/0x510 [ 34.425208] ? do_dup2+0x450/0x450 [ 34.428729] ? __fdget+0x1d0/0x230 [ 34.432249] __x64_sys_sendmsg+0x132/0x220 [ 34.436459] ? __sys_sendmsg+0x1b0/0x1b0 [ 34.440521] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 34.445862] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.450857] ? do_syscall_64+0x21/0x620 [ 34.454810] do_syscall_64+0xf9/0x620 executing program executing program [ 34.458612] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.463798] RIP: 0033:0x7f73a8a3be99 [ 34.467507] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 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 [ 34.486398] RSP: 002b:00007f73a89ab318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 34.494087] RAX: ffffffffffffffda RBX: 00007f73a8ac5428 RCX: 00007f73a8a3be99 [ 34.501336] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 [ 34.508581] RBP: 00007f73a8ac5420 R08: 00007f73a89ab700 R09: 0000000000000000 [ 34.515835] R10: 00007f73a89ab700 R11: 0000000000000246 R12: 1f00000000000000 [ 34.523094] R13: 00007fff44c9c89f R14: 00007f73a89ab400 R15: 0000000000022000 [ 34.530371] Modules linked in: [ 34.533574] ---[ end trace 56c717af858cadb0 ]--- [ 34.538340] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 34.544053] 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 [ 34.562958] RSP: 0000:ffff88809b817950 EFLAGS: 00010086 [ 34.568318] RAX: 000000000000004e RBX: ffff88809b817a58 RCX: 0000000000000000 [ 34.575596] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1013702f1c [ 34.582872] RBP: ffff88809b817a70 R08: 000000000000004e R09: 0000000000000000 [ 34.590138] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 34.597388] R13: dead000000000100 R14: ffff88809b817a78 R15: 0000000000000007 [ 34.604638] FS: 00007f73a89ab700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.612839] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.618700] CR2: 00007f73a89ed718 CR3: 0000000092eff000 CR4: 00000000003406e0 [ 34.625955] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.633230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.640481] Kernel panic - not syncing: Fatal exception [ 34.645991] Kernel Offset: disabled [ 34.649603] Rebooting in 86400 seconds..