[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. syzkaller login: [ 34.365312] IPVS: ftp: loaded support on port[0] = 21 [ 34.451893] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 34.459767] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.469304] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 34.492239] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 34.502999] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 34.510418] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 34.517969] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 34.524735] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 34.770818] list_del corruption, ffff8880b04f7738->next is LIST_POISON1 (dead000000000100) [ 34.779583] ------------[ cut here ]------------ [ 34.784511] kernel BUG at lib/list_debug.c:45! [ 34.789083] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 34.794428] CPU: 1 PID: 8161 Comm: syz-executor331 Not tainted 4.19.211-syzkaller #0 [ 34.802290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 34.811641] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 34.817328] 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 [ 34.836221] RSP: 0018:ffff8880b04f7610 EFLAGS: 00010086 [ 34.841563] RAX: 000000000000004e RBX: ffff8880b04f7720 RCX: 0000000000000000 [ 34.848809] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101609eeb4 [ 34.856057] RBP: ffff8880b04f7738 R08: 000000000000004e R09: 0000000000000000 [ 34.863304] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 34.870552] R13: dead000000000100 R14: ffff8880b04f7740 R15: 0000000000000007 [ 34.877811] FS: 00007fdbfab32700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.886022] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.891882] CR2: 00007ffd62dba000 CR3: 000000009aef0000 CR4: 00000000003406e0 [ 34.899132] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.906475] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.913805] Call Trace: [ 34.916391] remove_wait_queue+0x2c/0x180 [ 34.920615] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.925174] tipc_send_group_bcast+0x317/0xa10 [ 34.929740] ? tipc_shutdown+0x310/0x310 [ 34.933865] ? __lock_acquire+0x6de/0x3ff0 [ 34.938076] ? do_wait_intr_irq+0x270/0x270 [ 34.942466] ? __lock_acquire+0x6de/0x3ff0 [ 34.946699] __tipc_sendmsg+0xa2b/0x1320 [ 34.950737] ? mark_held_locks+0xf0/0xf0 [ 34.954787] ? rw_copy_check_uvector+0x27c/0x340 [ 34.959542] ? tipc_sendmcast+0xba0/0xba0 [ 34.963670] ? lock_sock_nested+0xa6/0x110 [ 34.967883] ? mark_held_locks+0xa6/0xf0 [ 34.971921] ? __local_bh_enable_ip+0x159/0x270 [ 34.976585] tipc_sendmsg+0x4c/0x70 [ 34.980190] ? __tipc_sendmsg+0x1320/0x1320 [ 34.984491] sock_sendmsg+0xc3/0x120 [ 34.988184] ___sys_sendmsg+0x3b3/0x8e0 [ 34.992146] ? copy_msghdr_from_user+0x440/0x440 [ 34.996886] ? __fget+0x32f/0x510 [ 35.000319] ? mark_held_locks+0xf0/0xf0 [ 35.004357] ? lock_downgrade+0x720/0x720 [ 35.008486] ? check_preemption_disabled+0x41/0x280 [ 35.013515] ? check_preemption_disabled+0x41/0x280 [ 35.018600] ? __fget+0x356/0x510 [ 35.022042] ? __might_fault+0x11f/0x1d0 [ 35.026084] ? lock_downgrade+0x720/0x720 [ 35.030211] ? lock_acquire+0x170/0x3c0 [ 35.034167] __sys_sendmmsg+0x195/0x470 [ 35.038134] ? __ia32_sys_sendmsg+0x220/0x220 [ 35.042611] ? finish_task_switch+0x146/0x760 [ 35.047089] ? dnotify_flush+0x75/0x2d0 [ 35.051045] ? __se_sys_futex+0x28f/0x3b0 [ 35.055170] ? __se_sys_futex+0x298/0x3b0 [ 35.059301] ? do_futex+0x1880/0x1880 [ 35.063081] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 35.068424] __x64_sys_sendmmsg+0x99/0x100 [ 35.072644] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.077204] do_syscall_64+0xf9/0x620 [ 35.081106] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.086287] RIP: 0033:0x7fdbfaba2879 [ 35.089990] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 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 [ 35.108871] RSP: 002b:00007fdbfab32318 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 35.116557] RAX: ffffffffffffffda RBX: 00007fdbfac2b418 RCX: 00007fdbfaba2879 [ 35.123915] RDX: 0000000000000092 RSI: 00000000200030c0 RDI: 0000000000000003 [ 35.131272] RBP: 00007fdbfac2b410 R08: 0000000000000000 R09: 0000000000000000 [ 35.138519] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdbfabf8004 [ 35.145781] R13: 00007ffd62d1732f R14: 00007fdbfab32400 R15: 0000000000022000 [ 35.153027] Modules linked in: [ 35.156209] ---[ end trace fb12b6ddaf4c7515 ]--- [ 35.160947] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 35.166633] 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 [ 35.185511] RSP: 0018:ffff8880b04f7610 EFLAGS: 00010086 [ 35.190851] RAX: 000000000000004e RBX: ffff8880b04f7720 RCX: 0000000000000000 [ 35.198099] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101609eeb4 [ 35.205345] RBP: ffff8880b04f7738 R08: 000000000000004e R09: 0000000000000000 [ 35.212592] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 35.219858] R13: dead000000000100 R14: ffff8880b04f7740 R15: 0000000000000007 [ 35.227109] FS: 00007fdbfab32700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 35.235311] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.241169] CR2: 00007ffd62dba000 CR3: 000000009aef0000 CR4: 00000000003406e0 [ 35.248421] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.255689] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.262937] Kernel panic - not syncing: Fatal exception [ 35.268466] Kernel Offset: disabled [ 35.272079] Rebooting in 86400 seconds..