[ 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 '10.128.1.39' (ECDSA) to the list of known hosts. syzkaller login: [ 31.335176] BTRFS: device fsid 11f48b31-c56c-4ac8-b2ac-117247207a11 devid 1 transid 8 /dev/loop0 [ 31.350566] BTRFS info (device loop0): force clearing of disk cache [ 31.362149] BTRFS info (device loop0): enabling ssd optimizations [ 31.374615] BTRFS info (device loop0): using spread ssd allocation scheme [ 31.381593] BTRFS info (device loop0): max_inline at 2895 [ 31.387306] BTRFS info (device loop0): enabling inode map caching [ 31.393775] BTRFS info (device loop0): enabling disk space caching [ 31.400092] BTRFS info (device loop0): turning on discard [ 31.406474] BTRFS info (device loop0): setting nodatacow, compression disabled [ 31.413978] BTRFS info (device loop0): disk space caching is enabled [ 31.420473] BTRFS info (device loop0): has skinny extents [ 31.426160] BTRFS info (device loop0): flagging fs with big metadata feature [ 31.458726] BTRFS info (device loop0): clearing free space tree [ 31.465023] BTRFS info (device loop0): clearing 1 ro feature flag [ 31.471326] BTRFS info (device loop0): clearing 2 ro feature flag [ 31.484071] BTRFS info (device loop0): checking UUID tree [ 31.507501] FAULT_INJECTION: forcing a failure. [ 31.507501] name failslab, interval 1, probability 0, space 0, times 1 [ 31.518913] CPU: 0 PID: 7964 Comm: syz-executor335 Not tainted 4.14.300-syzkaller #0 [ 31.526797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.536149] Call Trace: [ 31.538744] dump_stack+0x1b2/0x281 [ 31.542372] should_fail.cold+0x10a/0x149 [ 31.546522] should_failslab+0xd6/0x130 [ 31.550487] kmem_cache_alloc+0x28e/0x3c0 [ 31.554624] btrfs_alloc_tree_block+0xcfa/0x1410 [ 31.559372] ? btrfs_reserve_extent+0x3b0/0x3b0 [ 31.564026] ? memcpy+0x35/0x50 [ 31.567299] ? read_extent_buffer+0x102/0x150 [ 31.571796] __btrfs_cow_block+0x367/0xfd0 [ 31.576023] ? btrfs_set_lock_blocking_rw+0x266/0x2f0 [ 31.581196] ? update_ref_for_cow+0x980/0x980 [ 31.585677] ? btrfs_tree_read_unlock_blocking+0x210/0x210 [ 31.591285] btrfs_cow_block+0x207/0x6d0 [ 31.595331] ? btrfs_set_path_blocking+0x39/0x110 [ 31.600157] btrfs_search_slot+0x546/0x1c20 [ 31.604475] ? split_leaf+0x14a0/0x14a0 [ 31.608441] btrfs_insert_empty_items+0xaf/0x160 [ 31.613198] btrfs_insert_item+0xc3/0x1f0 [ 31.617334] ? btrfs_insert_empty_items+0x160/0x160 [ 31.622350] btrfs_create_pending_block_groups+0x1d6/0x540 [ 31.627962] ? btrfs_read_block_groups+0x1ca0/0x1ca0 [ 31.633053] ? wait_for_completion_io+0x10/0x10 [ 31.637722] ? btrfs_trans_release_metadata+0x1d/0x560 [ 31.642985] ? do_chunk_alloc+0x167/0x800 [ 31.647121] __btrfs_end_transaction+0x1f2/0xaa0 [ 31.651894] btrfs_alloc_data_chunk_ondemand+0x2e9/0xc50 [ 31.657334] ? __lock_acquire+0x5fc/0x3f20 [ 31.661566] btrfs_fallocate+0x210/0x26f0 [ 31.665703] ? __lock_acquire+0x5fc/0x3f20 [ 31.669932] ? aa_file_perm+0x304/0xab0 [ 31.673904] ? __btrfs_drop_extents+0x1980/0x1980 [ 31.678736] ? aa_path_link+0x3a0/0x3a0 [ 31.682694] ? _kstrtoull+0x1f2/0x450 [ 31.686485] ? get_pid_task+0x91/0x130 [ 31.690361] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 31.695796] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 31.700796] ? __btrfs_drop_extents+0x1980/0x1980 [ 31.705622] vfs_fallocate+0x346/0x790 [ 31.709499] ioctl_preallocate+0x132/0x1a0 [ 31.713717] ? vfs_ioctl+0xb0/0xb0 [ 31.717242] ? debug_check_no_obj_freed+0x2c0/0x680 [ 31.722250] do_vfs_ioctl+0xd94/0xff0 [ 31.726038] ? ioctl_preallocate+0x1a0/0x1a0 [ 31.730434] ? vfs_write+0x319/0x4d0 [ 31.734132] ? SyS_write+0x14d/0x210 [ 31.737831] ? security_file_ioctl+0x83/0xb0 [ 31.742222] SyS_ioctl+0x7f/0xb0 [ 31.745577] ? do_vfs_ioctl+0xff0/0xff0 [ 31.749555] do_syscall_64+0x1d5/0x640 [ 31.753435] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 31.765655] ------------[ cut here ]------------ [ 31.770447] WARNING: CPU: 0 PID: 7964 at fs/btrfs/extent-tree.c:10387 btrfs_create_pending_block_groups.cold+0x4b/0x6e [ 31.781279] Kernel panic - not syncing: panic_on_warn set ... [ 31.781279] [ 31.788654] CPU: 0 PID: 7964 Comm: syz-executor335 Not tainted 4.14.300-syzkaller #0 [ 31.796522] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 31.805857] Call Trace: [ 31.808433] dump_stack+0x1b2/0x281 [ 31.812045] panic+0x1f9/0x42d [ 31.815223] ? add_taint.cold+0x16/0x16 [ 31.819182] ? btrfs_create_pending_block_groups.cold+0x4b/0x6e [ 31.825228] ? btrfs_create_pending_block_groups.cold+0x4b/0x6e [ 31.831269] __warn.cold+0x20/0x44 [ 31.834793] ? ist_end_non_atomic+0x10/0x10 [ 31.839097] ? btrfs_create_pending_block_groups.cold+0x4b/0x6e [ 31.845141] report_bug+0x208/0x250 [ 31.848758] do_error_trap+0x195/0x2d0 [ 31.852635] ? math_error+0x2d0/0x2d0 [ 31.856435] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.861264] invalid_op+0x1b/0x40 [ 31.864711] ? btrfs_create_pending_block_groups.cold+0x4b/0x6e [ 31.870759] ? btrfs_create_pending_block_groups.cold+0x4b/0x6e [ 31.876811] ? btrfs_read_block_groups+0x1ca0/0x1ca0 [ 31.881906] ? wait_for_completion_io+0x10/0x10 [ 31.886563] ? btrfs_trans_release_metadata+0x1d/0x560 [ 31.891820] ? do_chunk_alloc+0x167/0x800 [ 31.895961] ? __btrfs_end_transaction+0x1f2/0xaa0 [ 31.900888] ? btrfs_alloc_data_chunk_ondemand+0x2e9/0xc50 [ 31.906507] ? __lock_acquire+0x5fc/0x3f20 [ 31.910726] ? btrfs_fallocate+0x210/0x26f0 [ 31.915040] ? __lock_acquire+0x5fc/0x3f20 [ 31.919265] ? aa_file_perm+0x304/0xab0 [ 31.923222] ? __btrfs_drop_extents+0x1980/0x1980 [ 31.928046] ? aa_path_link+0x3a0/0x3a0 [ 31.932004] ? _kstrtoull+0x1f2/0x450 [ 31.935789] ? get_pid_task+0x91/0x130 [ 31.939667] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 31.945104] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 31.950108] ? __btrfs_drop_extents+0x1980/0x1980 [ 31.954936] ? vfs_fallocate+0x346/0x790 [ 31.958989] ? ioctl_preallocate+0x132/0x1a0 [ 31.963400] ? vfs_ioctl+0xb0/0xb0 [ 31.966934] ? debug_check_no_obj_freed+0x2c0/0x680 [ 31.971939] ? do_vfs_ioctl+0xd94/0xff0 [ 31.975914] ? ioctl_preallocate+0x1a0/0x1a0 [ 31.980316] ? vfs_write+0x319/0x4d0 [ 31.984018] ? SyS_write+0x14d/0x210 [ 31.987719] ? security_file_ioctl+0x83/0xb0 [ 31.992111] ? SyS_ioctl+0x7f/0xb0 [ 31.995638] ? do_vfs_ioctl+0xff0/0xff0 [ 31.999603] ? do_syscall_64+0x1d5/0x640 [ 32.003675] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 32.009436] Kernel Offset: disabled [ 32.013108] Rebooting in 86400 seconds..