[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts. syzkaller login: [ 45.356848] IPVS: ftp: loaded support on port[0] = 21 [ 45.369733] IPVS: ftp: loaded support on port[0] = 21 [ 45.387732] IPVS: ftp: loaded support on port[0] = 21 [ 45.387738] IPVS: ftp: loaded support on port[0] = 21 [ 45.412570] IPVS: ftp: loaded support on port[0] = 21 [ 45.443537] IPVS: ftp: loaded support on port[0] = 21 executing program executing program [ 45.670182] hrtimer: interrupt took 44192 ns 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 executing program executing program executing program executing program executing program executing program executing program executing program [ 47.360131] Bluetooth: hci5: command 0x0409 tx timeout [ 47.369663] Bluetooth: hci3: command 0x0409 tx timeout [ 47.376525] Bluetooth: hci1: command 0x0409 tx timeout [ 47.440344] Bluetooth: hci2: command 0x0409 tx timeout [ 47.481175] Bluetooth: hci4: command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program [ 47.590808] Bluetooth: hci0: command 0x0409 tx timeout 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 executing program executing program executing program executing program executing program executing program executing program executing program [ 49.438990] Bluetooth: hci3: command 0x041b tx timeout [ 49.444972] Bluetooth: hci5: command 0x041b tx timeout [ 49.519112] Bluetooth: hci1: command 0x041b tx timeout [ 49.570945] Bluetooth: hci2: command 0x041b tx timeout executing program executing program executing program executing program executing program executing program [ 49.623258] Bluetooth: hci4: command 0x041b tx timeout [ 49.679103] Bluetooth: hci0: command 0x041b tx timeout 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 executing program executing program executing program executing program executing program executing program [ 51.359600] list_del corruption, ffff8880b401fa70->next is LIST_POISON1 (dead000000000100) [ 51.368461] ------------[ cut here ]------------ [ 51.373216] kernel BUG at lib/list_debug.c:45! [ 51.377926] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 51.383371] CPU: 1 PID: 8681 Comm: syz-executor330 Not tainted 4.19.211-syzkaller #0 [ 51.391233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.400602] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 51.406369] 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 [ 51.425261] RSP: 0018:ffff8880b401f950 EFLAGS: 00010086 [ 51.430606] RAX: 000000000000004e RBX: ffff8880b401fa58 RCX: 0000000000000000 [ 51.437857] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1016803f1c [ 51.445106] RBP: ffff8880b401fa70 R08: 000000000000004e R09: 0000000000000000 [ 51.452355] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 51.459707] R13: dead000000000100 R14: ffff8880b401fa78 R15: 0000000000000007 [ 51.466983] FS: 00007ff98e000700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 51.475191] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.481062] CR2: 00007ff98e8c8e78 CR3: 00000000a8b52000 CR4: 00000000003406e0 [ 51.488325] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.495664] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.502917] Call Trace: [ 51.505494] remove_wait_queue+0x2c/0x180 [ 51.509630] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 51.514205] __tipc_sendstream+0x373/0x9d0 [ 51.518425] ? tipc_sendmsg+0x70/0x70 [ 51.522213] ? do_wait_intr_irq+0x270/0x270 [ 51.526539] ? mark_held_locks+0xa6/0xf0 [ 51.530593] ? __local_bh_enable_ip+0x159/0x270 [ 51.535253] tipc_sendstream+0x4c/0x70 [ 51.539141] ? __tipc_sendstream+0x9d0/0x9d0 [ 51.543532] sock_sendmsg+0xc3/0x120 [ 51.547246] ___sys_sendmsg+0x7bb/0x8e0 [ 51.551209] ? copy_msghdr_from_user+0x440/0x440 [ 51.556031] ? __fget+0x32f/0x510 [ 51.559464] ? lock_downgrade+0x720/0x720 [ 51.563601] ? check_preemption_disabled+0x41/0x280 [ 51.568604] ? check_preemption_disabled+0x41/0x280 [ 51.573599] ? __fget+0x356/0x510 [ 51.577032] ? do_dup2+0x450/0x450 [ 51.580551] ? __fdget+0x1d0/0x230 [ 51.584070] __x64_sys_sendmsg+0x132/0x220 [ 51.588287] ? __sys_sendmsg+0x1b0/0x1b0 [ 51.592332] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 51.597690] ? trace_hardirqs_off_caller+0x6e/0x210 [ 51.602696] ? do_syscall_64+0x21/0x620 [ 51.606648] do_syscall_64+0xf9/0x620 [ 51.610430] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.615607] RIP: 0033:0x7ff98e873819 [ 51.619309] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 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 [ 51.638196] RSP: 002b:00007ff98e000318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 51.645909] RAX: ffffffffffffffda RBX: 00007ff98e8fc4d8 RCX: 00007ff98e873819 [ 51.653159] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000004 [ 51.660405] RBP: 00007ff98e8fc4d0 R08: 00007ff98e000700 R09: 0000000000000000 [ 51.667661] R10: 00007ff98e000700 R11: 0000000000000246 R12: 00007ff98e8c9308 [ 51.675088] R13: 00007ffc3603f90f R14: 00007ff98e000400 R15: 0000000000022000 [ 51.682343] Modules linked in: [ 51.685520] ---[ end trace 9b7dc72c7f79f403 ]--- [ 51.690275] RIP: 0010:__list_del_entry_valid.cold+0x23/0x4a [ 51.695975] 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 [ 51.714857] RSP: 0018:ffff8880b401f950 EFLAGS: 00010086 [ 51.720197] RAX: 000000000000004e RBX: ffff8880b401fa58 RCX: 0000000000000000 [ 51.727446] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1016803f1c [ 51.734696] RBP: ffff8880b401fa70 R08: 000000000000004e R09: 0000000000000000 [ 51.741950] R10: 0000000000000005 R11: 0000000000000000 R12: dead000000000200 [ 51.749209] R13: dead000000000100 R14: ffff8880b401fa78 R15: 0000000000000007 [ 51.756458] FS: 00007ff98e000700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 51.764659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.770521] CR2: 00007ff98e8c8e78 CR3: 00000000a8b52000 CR4: 00000000003406e0 [ 51.777771] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.785025] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.792275] Kernel panic - not syncing: Fatal exception [ 51.797676] Kernel Offset: disabled [ 51.801285] Rebooting in 86400 seconds..