[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.48' (ECDSA) to the list of known hosts. syzkaller login: [ 71.149954][ T3232] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.156401][ T3232] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.030143][ T8409] IPVS: ftp: loaded support on port[0] = 21 [ 72.154763][ T177] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.198080][ T177] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.207309][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.262668][ T265] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.284803][ T265] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 72.310447][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 72.409141][ T8409] ------------[ cut here ]------------ [ 72.415012][ T8409] WARNING: CPU: 1 PID: 8409 at fs/namespace.c:1186 mntput_no_expire+0xaca/0xcb0 [ 72.424163][ T8409] Modules linked in: [ 72.428178][ T8409] CPU: 1 PID: 8409 Comm: syz-executor035 Not tainted 5.12.0-rc5-syzkaller #0 [ 72.436953][ T8409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.447120][ T8409] RIP: 0010:mntput_no_expire+0xaca/0xcb0 [ 72.452870][ T8409] Code: ff 48 c7 c2 e0 cb 78 89 be c2 02 00 00 48 c7 c7 a0 cb 78 89 c6 05 e5 6d e5 0b 01 e8 ff e1 f6 06 e9 3f fd ff ff e8 c6 a5 a8 ff <0f> 0b e9 fc fc ff ff e8 ba a5 a8 ff e8 55 dc 94 ff 31 ff 89 c5 89 [ 72.472837][ T8409] RSP: 0018:ffffc9000165fc78 EFLAGS: 00010293 [ 72.479066][ T8409] RAX: 0000000000000000 RBX: 1ffff920002cbf95 RCX: 0000000000000000 [ 72.487067][ T8409] RDX: ffff88802072d4c0 RSI: ffffffff81cb4b8a RDI: 0000000000000003 [ 72.495133][ T8409] RBP: ffff888011656900 R08: 0000000000000000 R09: ffffffff8fa978af [ 72.503309][ T8409] R10: ffffffff81cb4884 R11: 0000000000000000 R12: 0000000000000008 [ 72.511363][ T8409] R13: ffffc9000165fcc8 R14: dffffc0000000000 R15: 00000000ffffffff [ 72.519420][ T8409] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 72.528450][ T8409] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.535055][ T8409] CR2: 000055a722053160 CR3: 000000000bc8e000 CR4: 00000000001506e0 [ 72.543131][ T8409] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.551185][ T8409] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.559235][ T8409] Call Trace: [ 72.562539][ T8409] ? clone_private_mount+0x140/0x140 [ 72.567851][ T8409] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 72.573844][ T8409] cleanup_mnt+0x523/0x530 [ 72.578351][ T8409] task_work_run+0xdd/0x1a0 [ 72.582884][ T8409] do_exit+0xbfc/0x2a60 [ 72.587061][ T8409] ? io_schedule_timeout+0x140/0x140 [ 72.592478][ T8409] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 72.598728][ T8409] ? mm_update_next_owner+0x7a0/0x7a0 [ 72.604127][ T8409] ? preempt_schedule_thunk+0x16/0x18 [ 72.609585][ T8409] ? preempt_schedule_common+0x59/0xc0 [ 72.615086][ T8409] ? preempt_schedule_thunk+0x16/0x18 [ 72.620549][ T8409] ? trace_hardirqs_on+0x38/0x1c0 [ 72.625607][ T8409] do_group_exit+0x125/0x310 [ 72.630295][ T8409] __x64_sys_exit_group+0x3a/0x50 [ 72.635343][ T8409] do_syscall_64+0x2d/0x70 [ 72.639849][ T8409] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.646033][ T8409] RIP: 0033:0x446af9 [ 72.650015][ T8409] Code: Unable to access opcode bytes at RIP 0x446acf. [ 72.656869][ T8409] RSP: 002b:00000000005dfe48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 72.665389][ T8409] RAX: ffffffffffffffda RBX: 00000000004ce450 RCX: 0000000000446af9 [ 72.673463][ T8409] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 72.681520][ T8409] RBP: 0000000000000001 R08: ffffffffffffffbc R09: 0000000000000000 [ 72.689581][ T8409] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ce450 [ 72.697577][ T8409] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 72.705667][ T8409] Kernel panic - not syncing: panic_on_warn set ... [ 72.712260][ T8409] CPU: 1 PID: 8409 Comm: syz-executor035 Not tainted 5.12.0-rc5-syzkaller #0 [ 72.721032][ T8409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.731189][ T8409] Call Trace: [ 72.734481][ T8409] dump_stack+0x141/0x1d7 [ 72.738835][ T8409] panic+0x306/0x73d [ 72.742742][ T8409] ? __warn_printk+0xf3/0xf3 [ 72.747357][ T8409] ? __warn.cold+0x1a/0x44 [ 72.752659][ T8409] ? mntput_no_expire+0xaca/0xcb0 [ 72.757705][ T8409] __warn.cold+0x35/0x44 [ 72.761964][ T8409] ? mntput_no_expire+0xaca/0xcb0 [ 72.767007][ T8409] report_bug+0x1bd/0x210 [ 72.771354][ T8409] handle_bug+0x3c/0x60 [ 72.775527][ T8409] exc_invalid_op+0x14/0x40 [ 72.780046][ T8409] asm_exc_invalid_op+0x12/0x20 [ 72.784917][ T8409] RIP: 0010:mntput_no_expire+0xaca/0xcb0 [ 72.790578][ T8409] Code: ff 48 c7 c2 e0 cb 78 89 be c2 02 00 00 48 c7 c7 a0 cb 78 89 c6 05 e5 6d e5 0b 01 e8 ff e1 f6 06 e9 3f fd ff ff e8 c6 a5 a8 ff <0f> 0b e9 fc fc ff ff e8 ba a5 a8 ff e8 55 dc 94 ff 31 ff 89 c5 89 [ 72.810201][ T8409] RSP: 0018:ffffc9000165fc78 EFLAGS: 00010293 [ 72.816289][ T8409] RAX: 0000000000000000 RBX: 1ffff920002cbf95 RCX: 0000000000000000 [ 72.824274][ T8409] RDX: ffff88802072d4c0 RSI: ffffffff81cb4b8a RDI: 0000000000000003 [ 72.832258][ T8409] RBP: ffff888011656900 R08: 0000000000000000 R09: ffffffff8fa978af [ 72.840237][ T8409] R10: ffffffff81cb4884 R11: 0000000000000000 R12: 0000000000000008 [ 72.848217][ T8409] R13: ffffc9000165fcc8 R14: dffffc0000000000 R15: 00000000ffffffff [ 72.856207][ T8409] ? mntput_no_expire+0x7c4/0xcb0 [ 72.861255][ T8409] ? mntput_no_expire+0xaca/0xcb0 [ 72.866301][ T8409] ? mntput_no_expire+0xaca/0xcb0 [ 72.871350][ T8409] ? clone_private_mount+0x140/0x140 [ 72.876650][ T8409] ? _find_next_bit.constprop.0+0x1a0/0x200 [ 72.882571][ T8409] cleanup_mnt+0x523/0x530 [ 72.887028][ T8409] task_work_run+0xdd/0x1a0 [ 72.891566][ T8409] do_exit+0xbfc/0x2a60 [ 72.895741][ T8409] ? io_schedule_timeout+0x140/0x140 [ 72.901045][ T8409] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 72.907315][ T8409] ? mm_update_next_owner+0x7a0/0x7a0 [ 72.912708][ T8409] ? preempt_schedule_thunk+0x16/0x18 [ 72.918108][ T8409] ? preempt_schedule_common+0x59/0xc0 [ 72.923590][ T8409] ? preempt_schedule_thunk+0x16/0x18 [ 72.928977][ T8409] ? trace_hardirqs_on+0x38/0x1c0 [ 72.934041][ T8409] do_group_exit+0x125/0x310 [ 72.938661][ T8409] __x64_sys_exit_group+0x3a/0x50 [ 72.943716][ T8409] do_syscall_64+0x2d/0x70 [ 72.948160][ T8409] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.954073][ T8409] RIP: 0033:0x446af9 [ 72.957999][ T8409] Code: Unable to access opcode bytes at RIP 0x446acf. [ 72.964851][ T8409] RSP: 002b:00000000005dfe48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 72.973281][ T8409] RAX: ffffffffffffffda RBX: 00000000004ce450 RCX: 0000000000446af9 [ 72.981263][ T8409] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 72.989252][ T8409] RBP: 0000000000000001 R08: ffffffffffffffbc R09: 0000000000000000 [ 72.998277][ T8409] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ce450 [ 73.006277][ T8409] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 73.015017][ T8409] Kernel Offset: disabled [ 73.019470][ T8409] Rebooting in 86400 seconds..