[ 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 '10.128.0.80' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 30.194823] BTRFS: device fsid da33867d-e382-4163-b5e0-ea15c91cfb38 devid 0 transid 0 /dev/loop3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.686053] BTRFS: device fsid da33867d-e382-4163-b5e0-ea15c91cfb38 devid 1 transid 7 /dev/loop4 executing program executing program [ 30.858155] BTRFS info (device loop4): disk space caching is enabled [ 30.865231] BTRFS info (device loop4): has skinny extents executing program executing program executing program executing program [ 30.915286] BTRFS error (device loop4): bad tree block start 0 30429184 [ 30.922751] BTRFS error (device loop4): bad tree block start 0 30429184 [ 30.942785] BTRFS warning (device loop4): failed to recover relocation: -5 executing program executing program executing program [ 31.063875] BTRFS error (device loop4): open_ctree failed [ 31.093472] BTRFS: device fsid da33867d-e382-4163-b5e0-ea15c91cfb38 devid 0 transid 0 /dev/loop1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.466330] BTRFS info (device loop3): disk space caching is enabled [ 31.495035] BTRFS info (device loop3): has skinny extents [ 31.545364] BTRFS error (device loop3): bad tree block start 0 30429184 [ 31.552546] BTRFS error (device loop3): bad tree block start 0 30429184 [ 31.559665] BTRFS warning (device loop3): failed to recover relocation: -5 executing program executing program executing program executing program executing program executing program executing program [ 31.732574] BTRFS error (device loop3): open_ctree failed [ 31.758400] BTRFS: device fsid da33867d-e382-4163-b5e0-ea15c91cfb38 devid 0 transid 0 /dev/loop1 executing program executing program executing program executing program [ 31.804488] BTRFS info (device loop5): disk space caching is enabled [ 31.811058] BTRFS info (device loop5): has skinny extents executing program executing program executing program [ 31.904538] BTRFS error (device loop5): super_num_devices 1 mismatch with num_devices 1 found here [ 31.918223] BTRFS error (device loop5): failed to read chunk tree: -22 executing program executing program executing program executing program executing program executing program executing program [ 32.222340] BTRFS error (device loop5): open_ctree failed executing program executing program [ 32.274367] BTRFS info (device loop4): disk space caching is enabled [ 32.280958] BTRFS info (device loop4): has skinny extents executing program [ 32.335313] BTRFS error (device loop4): super_num_devices 1 mismatch with num_devices 1 found here [ 32.344782] BTRFS error (device loop4): failed to read chunk tree: -22 [ 32.412773] BTRFS error (device loop4): open_ctree failed executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 32.601049] BTRFS info (device loop2): disk space caching is enabled [ 32.613614] BTRFS info (device loop2): has skinny extents executing program [ 32.675119] BTRFS error (device loop2): super_num_devices 1 mismatch with num_devices 1 found here [ 32.687163] BTRFS error (device loop2): failed to read chunk tree: -22 executing program executing program [ 32.772170] BTRFS error (device loop2): open_ctree failed [ 32.782180] BTRFS info (device loop2): disk space caching is enabled [ 32.789057] BTRFS info (device loop2): has skinny extents executing program executing program executing program executing program executing program executing program [ 32.920241] BTRFS error (device loop2): bad tree block start 0 30429184 [ 32.929801] BTRFS error (device loop2): bad tree block start 0 30429184 [ 32.949557] BTRFS warning (device loop2): failed to recover relocation: -5 executing program executing program [ 33.001890] BTRFS error (device loop2): open_ctree failed [ 33.024765] BTRFS info (device loop2): disk space caching is enabled [ 33.033811] BTRFS info (device loop2): has skinny extents executing program executing program executing program executing program [ 33.060615] BTRFS error (device loop2): bad tree block start 0 30429184 [ 33.068975] BTRFS error (device loop2): bad tree block start 0 30429184 [ 33.077630] BTRFS warning (device loop2): failed to recover relocation: -5 executing program executing program [ 33.162396] BTRFS error (device loop2): open_ctree failed [ 33.170900] BTRFS info (device loop2): disk space caching is enabled [ 33.177622] BTRFS info (device loop2): has skinny extents [ 33.214369] BTRFS error (device loop2): bad tree block start 0 30429184 [ 33.221425] BTRFS error (device loop2): bad tree block start 0 30429184 [ 33.228436] BTRFS warning (device loop2): failed to recover relocation: -5 [ 33.322765] ------------[ cut here ]------------ [ 33.328338] WARNING: CPU: 0 PID: 8412 at fs/btrfs/volumes.c:936 __btrfs_close_devices+0x888/0xb20 [ 33.337415] Kernel panic - not syncing: panic_on_warn set ... [ 33.337415] [ 33.344758] CPU: 0 PID: 8412 Comm: syz-executor332 Not tainted 4.14.206-syzkaller #0 [ 33.352615] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.362206] Call Trace: [ 33.364778] dump_stack+0x1b2/0x283 [ 33.368384] panic+0x1f9/0x42d [ 33.371555] ? add_taint.cold+0x16/0x16 [ 33.375509] ? __btrfs_close_devices+0x888/0xb20 [ 33.380266] ? __btrfs_close_devices+0x888/0xb20 [ 33.385020] __warn.cold+0x20/0x4b [ 33.388542] ? ist_end_non_atomic+0x10/0x10 [ 33.392851] ? __btrfs_close_devices+0x888/0xb20 [ 33.397588] report_bug+0x208/0x249 [ 33.401195] do_error_trap+0x195/0x2d0 [ 33.405082] ? math_error+0x2d0/0x2d0 [ 33.409009] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 33.414026] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 33.419242] ? debug_object_active_state+0x236/0x330 [ 33.424343] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.429171] invalid_op+0x1b/0x40 [ 33.432610] RIP: 0010:__btrfs_close_devices+0x888/0xb20 [ 33.437963] RSP: 0018:ffff888090547618 EFLAGS: 00010297 [ 33.443320] RAX: ffff8880a9ac6100 RBX: dffffc0000000000 RCX: ffff888090547688 [ 33.450584] RDX: 0000000000000000 RSI: ffff8880a9ac69b0 RDI: ffff8880b453b360 [ 33.457833] RBP: ffff8880ac63c940 R08: 0000000000000282 R09: 0000000000000000 [ 33.465081] R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 [ 33.472330] R13: dead000000000100 R14: ffff888090255880 R15: ffff8880ac63c9e0 [ 33.479610] ? __btrfs_close_devices+0x888/0xb20 [ 33.484409] ? kvfree+0x45/0x50 [ 33.487668] ? btrfs_alloc_device+0x580/0x580 [ 33.492243] btrfs_close_devices+0x24/0x140 [ 33.496544] open_ctree+0x241/0x7400 [ 33.500244] ? close_ctree+0x840/0x840 [ 33.504165] ? dlm_send_remote_unlock_request.constprop.0.cold+0x1d/0x1d [ 33.511037] btrfs_mount+0x1915/0x1fe0 [ 33.514906] ? btrfs_get_subvol_name_from_objectid+0x8b0/0x8b0 [ 33.520858] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 33.526299] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.531306] ? __lockdep_init_map+0x100/0x560 [ 33.535787] ? __lockdep_init_map+0x100/0x560 [ 33.540264] mount_fs+0x92/0x2a0 [ 33.543614] vfs_kern_mount.part.0+0x5b/0x470 [ 33.548114] vfs_kern_mount+0x3c/0x60 [ 33.551915] btrfs_mount+0x42a/0x1fe0 [ 33.555763] ? lock_downgrade+0x740/0x740 [ 33.559890] ? _find_next_bit+0xdb/0x100 [ 33.563979] ? btrfs_get_subvol_name_from_objectid+0x8b0/0x8b0 [ 33.569951] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 33.575385] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.580377] ? __lockdep_init_map+0x100/0x560 [ 33.584881] ? __lockdep_init_map+0x100/0x560 [ 33.589376] mount_fs+0x92/0x2a0 [ 33.592731] vfs_kern_mount.part.0+0x5b/0x470 [ 33.597234] do_mount+0xe53/0x2a00 [ 33.600760] ? do_raw_spin_unlock+0x164/0x220 [ 33.605248] ? copy_mount_string+0x40/0x40 [ 33.609471] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 33.614506] ? copy_mnt_ns+0xa30/0xa30 [ 33.618371] ? copy_mount_options+0x1fa/0x2f0 [ 33.622841] ? copy_mnt_ns+0xa30/0xa30 [ 33.626713] SyS_mount+0xa8/0x120 [ 33.630140] ? copy_mnt_ns+0xa30/0xa30 [ 33.634005] do_syscall_64+0x1d5/0x640 [ 33.637873] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 33.643060] RIP: 0033:0x448f9a [ 33.646226] RSP: 002b:00007fff3b1c9808 EFLAGS: 00000293 ORIG_RAX: 00000000000000a5 [ 33.653932] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000448f9a [ 33.661180] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff3b1c9850 [ 33.668429] RBP: 00007fff3b1c9890 R08: 00007fff3b1c9890 R09: 0000006e00000000 [ 33.675677] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 [ 33.682928] R13: 00007fff3b1c9850 R14: 0000000000000003 R15: 0000000000000063 [ 33.690892] Kernel Offset: disabled [ 33.694564] Rebooting in 86400 seconds..