[ 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 '10.128.0.209' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 43.278338] hrtimer: interrupt took 54305 ns executing program executing program executing program executing program executing program executing program [ 52.467837] list_del corruption, ffff88808f407a70->next is LIST_POISON1 (dead000000000100) [ 52.476713] ------------[ cut here ]------------ [ 52.481455] kernel BUG at lib/list_debug.c:45! [ 52.486112] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 52.491462] CPU: 0 PID: 8165 Comm: syz-executor109 Not tainted 4.19.211-syzkaller #0 [ 52.499411] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.508760] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 52.514455] 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 [ 52.533332] RSP: 0018:ffff88808f407950 EFLAGS: 00010086 [ 52.538678] RAX: 000000000000004e RBX: ffff88808f407a58 RCX: 0000000000000000 [ 52.546533] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1011e80f1c [ 52.553795] RBP: ffff88808f407a70 R08: 000000000000004e R09: 0000000000000000 [ 52.561055] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 52.568316] R13: dead000000000100 R14: ffff88808f407a78 R15: 0000000000000007 [ 52.575584] FS: 00007fc31e5fd700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 52.583793] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.589659] CR2: 0000000020400000 CR3: 00000000a9760000 CR4: 00000000003406f0 [ 52.596912] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.604175] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.611423] Call Trace: [ 52.613997] remove_wait_queue+0x2c/0x180 [ 52.618122] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 52.622740] __tipc_sendstream+0x373/0x9d0 [ 52.626982] ? tipc_sendmsg+0x70/0x70 [ 52.630760] ? do_wait_intr_irq+0x270/0x270 [ 52.635062] ? mark_held_locks+0xa6/0xf0 [ 52.639112] ? __local_bh_enable_ip+0x159/0x270 [ 52.643774] tipc_sendstream+0x4c/0x70 [ 52.647648] ? __tipc_sendstream+0x9d0/0x9d0 [ 52.652037] sock_sendmsg+0xc3/0x120 [ 52.655727] ___sys_sendmsg+0x7bb/0x8e0 [ 52.659680] ? copy_msghdr_from_user+0x440/0x440 [ 52.664428] ? __fget+0x32f/0x510 [ 52.667860] ? lock_downgrade+0x720/0x720 [ 52.671998] ? check_preemption_disabled+0x41/0x280 [ 52.676993] ? check_preemption_disabled+0x41/0x280 [ 52.682096] ? __fget+0x356/0x510 [ 52.685547] ? do_dup2+0x450/0x450 [ 52.689087] ? __fdget+0x1d0/0x230 [ 52.692660] __x64_sys_sendmsg+0x132/0x220 [ 52.696872] ? __sys_sendmsg+0x1b0/0x1b0 [ 52.700914] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 52.706255] ? trace_hardirqs_off_caller+0x6e/0x210 [ 52.711255] ? do_syscall_64+0x21/0x620 [ 52.715208] do_syscall_64+0xf9/0x620 [ 52.718988] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.724153] RIP: 0033:0x7fc31e68dd59 [ 52.727852] 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 [ 52.746915] RSP: 002b:00007fc31e5fd318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 52.754599] RAX: ffffffffffffffda RBX: 00007fc31e716428 RCX: 00007fc31e68dd59 [ 52.761858] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000005 [ 52.769128] RBP: 00007fc31e716420 R08: 00007fc31e5fd700 R09: 0000000000000000 [ 52.776374] R10: 00007fc31e5fd700 R11: 0000000000000246 R12: 00007fc31e6e3074 [ 52.783621] R13: 00007fff9091ce7f R14: 00007fc31e5fd400 R15: 0000000000022000 [ 52.790876] Modules linked in: [ 52.794055] ---[ end trace 90393d0dea369c12 ]--- [ 52.798792] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 52.804479] 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 [ 52.825969] RSP: 0018:ffff88808f407950 EFLAGS: 00010086 [ 52.831311] RAX: 000000000000004e RBX: ffff88808f407a58 RCX: 0000000000000000 [ 52.838563] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1011e80f1c [ 52.845809] RBP: ffff88808f407a70 R08: 000000000000004e R09: 0000000000000000 [ 52.853053] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 52.860655] R13: dead000000000100 R14: ffff88808f407a78 R15: 0000000000000007 [ 52.872689] FS: 00007fc31e5fd700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 52.880910] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.886788] CR2: 0000000020400000 CR3: 00000000a9760000 CR4: 00000000003406f0 [ 52.894046] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.901734] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.908986] Kernel panic - not syncing: Fatal exception [ 52.914398] Kernel Offset: disabled [ 52.918019] Rebooting in 86400 seconds..