[ 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 '10.128.1.87' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.978864] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0 [ 39.995963] BTRFS info (device loop0): enabling inode map caching [ 40.002739] BTRFS warning (device loop0): excessive commit interval 622039222 [ 40.011228] BTRFS info (device loop0): force zlib compression, level 3 [ 40.017899] BTRFS info (device loop0): using free space tree [ 40.024928] BTRFS info (device loop0): has skinny extents [ 40.060663] FAULT_INJECTION: forcing a failure. [ 40.060663] name failslab, interval 1, probability 0, space 0, times 1 [ 40.072183] CPU: 0 PID: 8111 Comm: syz-executor334 Not tainted 4.19.211-syzkaller #0 [ 40.080067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 40.089414] Call Trace: [ 40.091987] dump_stack+0x1fc/0x2ef [ 40.095599] should_fail.cold+0xa/0xf [ 40.099382] ? setup_fault_attr+0x200/0x200 [ 40.103696] ? debug_check_no_obj_freed+0x201/0x490 [ 40.108697] __should_failslab+0x115/0x180 [ 40.112914] should_failslab+0x5/0x10 [ 40.116697] kmem_cache_alloc+0x277/0x370 [ 40.120829] __btrfs_run_delayed_items+0x89/0x490 [ 40.125655] btrfs_commit_transaction+0x56e/0x2480 [ 40.130568] ? record_root_in_trans.isra.0+0x327/0x400 [ 40.135823] ? btrfs_mksubvol+0xb1e/0x1160 [ 40.140035] ? btrfs_apply_pending_changes+0x150/0x150 [ 40.145291] ? lock_downgrade+0x720/0x720 [ 40.149416] ? lock_acquire+0x170/0x3c0 [ 40.153370] ? btrfs_mksubvol+0x9dd/0x1160 [ 40.157590] btrfs_mksubvol+0xe53/0x1160 [ 40.161634] ? create_subvol+0x1850/0x1850 [ 40.165881] ? preempt_count_add+0xaf/0x190 [ 40.170182] ? __mnt_want_write+0x22c/0x2c0 [ 40.174484] btrfs_ioctl_snap_create_transid+0x3bc/0x430 [ 40.179918] btrfs_ioctl_snap_create_v2+0x2db/0x5d0 [ 40.184915] ? btrfs_ioctl_snap_create+0x170/0x170 [ 40.189825] ? __might_fault+0x11f/0x1d0 [ 40.193870] btrfs_ioctl+0x2712/0x76d0 [ 40.197738] ? mark_held_locks+0xf0/0xf0 [ 40.201813] ? _kstrtoull+0x297/0x540 [ 40.205594] ? btrfs_ioctl_get_supported_features+0x50/0x50 [ 40.211285] ? _copy_from_user+0xd2/0x130 [ 40.215425] ? get_pid_task+0xcd/0x190 [ 40.219304] ? check_preemption_disabled+0x41/0x280 [ 40.224303] ? lock_downgrade+0x720/0x720 [ 40.228444] ? check_preemption_disabled+0x41/0x280 [ 40.233449] ? get_pid_task+0xf4/0x190 [ 40.237319] ? proc_fail_nth_write+0x95/0x1d0 [ 40.241793] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 40.246706] ? debug_check_no_obj_freed+0x201/0x490 [ 40.251706] ? __vfs_write+0xff/0x770 [ 40.255487] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 40.260401] ? common_file_perm+0x4e5/0x850 [ 40.264709] ? btrfs_ioctl_get_supported_features+0x50/0x50 [ 40.270402] do_vfs_ioctl+0xcdb/0x12e0 [ 40.274275] ? vfs_write+0x3d7/0x540 [ 40.277971] ? ioctl_preallocate+0x200/0x200 [ 40.282368] ? lock_downgrade+0x720/0x720 [ 40.286502] ? check_preemption_disabled+0x41/0x280 [ 40.291501] ? vfs_write+0x393/0x540 [ 40.295197] ? ksys_write+0x1c8/0x2a0 [ 40.298977] ksys_ioctl+0x9b/0xc0 [ 40.302413] __x64_sys_ioctl+0x6f/0xb0 [ 40.306285] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 40.310849] do_syscall_64+0xf9/0x620 [ 40.314631] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.319799] RIP: 0033:0x7f5f609aadb9 [ 40.323506] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 40.342387] RSP: 002b:00007fffb5b86318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 40.350075] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5f609aadb9 [ 40.357324] RDX: 0000000020001a80 RSI: 0000000050009417 RDI: 0000000000000004 [ 40.364583] RBP: 00007fffb5b86320 R08: 0000000000000002 R09: 00007f5f60003231 [ 40.371830] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 [ 40.379078] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.387934] BTRFS warning (device loop0): Skipping commit of aborted transaction. [ 40.395625] ------------[ cut here ]------------ [ 40.400913] WARNING: CPU: 0 PID: 8111 at fs/btrfs/transaction.c:1872 cleanup_transaction+0x1bf/0x250 [ 40.410191] Kernel panic - not syncing: panic_on_warn set ... [ 40.410191] [ 40.417558] CPU: 0 PID: 8111 Comm: syz-executor334 Not tainted 4.19.211-syzkaller #0 [ 40.425426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 40.434758] Call Trace: [ 40.437329] dump_stack+0x1fc/0x2ef [ 40.440941] panic+0x26a/0x50e [ 40.444117] ? __warn_printk+0xf3/0xf3 [ 40.447992] ? cleanup_transaction+0x1bf/0x250 [ 40.452557] ? __probe_kernel_read+0x130/0x1b0 [ 40.457121] ? __warn.cold+0x5/0x5a [ 40.460727] ? __warn+0xe4/0x200 [ 40.464075] ? cleanup_transaction+0x1bf/0x250 [ 40.468636] __warn.cold+0x20/0x5a [ 40.472156] ? cleanup_transaction+0x1bf/0x250 [ 40.476735] report_bug+0x262/0x2b0 [ 40.480351] do_error_trap+0x1d7/0x310 [ 40.484227] ? math_error+0x310/0x310 [ 40.488035] ? irq_work_claim+0xa6/0xc0 [ 40.491996] ? irq_work_queue+0x29/0x80 [ 40.495957] ? error_entry+0x72/0xd0 [ 40.499652] ? trace_hardirqs_off_caller+0x6e/0x210 [ 40.504652] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.509480] invalid_op+0x14/0x20 [ 40.512921] RIP: 0010:cleanup_transaction+0x1bf/0x250 [ 40.518089] Code: 89 e6 bf fb ff ff ff e8 5f ed 7b fe 41 83 fc fb 0f 84 d5 b9 13 05 e8 e0 eb 7b fe 44 89 e6 48 c7 c7 80 af a4 88 e8 b6 23 0c 05 <0f> 0b e8 ca eb 7b fe 44 89 e1 ba 50 07 00 00 48 89 ef 48 c7 c6 a0 [ 40.536967] RSP: 0018:ffff888094d5f558 EFLAGS: 00010282 [ 40.542307] RAX: 0000000000000000 RBX: 1ffff110129abeb2 RCX: 0000000000000000 [ 40.549558] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10129abe9d [ 40.556805] RBP: ffff88808ac46738 R08: 0000000000000001 R09: 0000000000000000 [ 40.564051] R10: 0000000000000005 R11: 0000000000000000 R12: 00000000fffffff4 [ 40.571300] R13: ffff88808ac46788 R14: ffff88808ac46758 R15: 0000000000000000 [ 40.578561] ? vprintk_func+0x81/0x180 [ 40.582529] ? cleanup_transaction+0x1bf/0x250 [ 40.587090] ? wait_current_trans+0x390/0x390 [ 40.591563] ? wait_woken+0x250/0x250 [ 40.595346] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 40.600342] ? kmem_cache_alloc+0x315/0x370 [ 40.604654] ? btrfs_trans_release_chunk_metadata+0x43/0x540 [ 40.610436] ? __btrfs_run_delayed_items+0x3c8/0x490 [ 40.615525] ? btrfs_trans_release_chunk_metadata+0x43/0x540 [ 40.621305] btrfs_commit_transaction+0x1de7/0x2480 [ 40.626303] ? record_root_in_trans.isra.0+0x327/0x400 [ 40.631562] ? btrfs_mksubvol+0xb1e/0x1160 [ 40.635777] ? btrfs_apply_pending_changes+0x150/0x150 [ 40.641039] ? lock_downgrade+0x720/0x720 [ 40.645166] ? lock_acquire+0x170/0x3c0 [ 40.649118] ? btrfs_mksubvol+0x9dd/0x1160 [ 40.653337] btrfs_mksubvol+0xe53/0x1160 [ 40.657383] ? create_subvol+0x1850/0x1850 [ 40.661604] ? preempt_count_add+0xaf/0x190 [ 40.665906] ? __mnt_want_write+0x22c/0x2c0 [ 40.670207] btrfs_ioctl_snap_create_transid+0x3bc/0x430 [ 40.675640] btrfs_ioctl_snap_create_v2+0x2db/0x5d0 [ 40.680647] ? btrfs_ioctl_snap_create+0x170/0x170 [ 40.685561] ? __might_fault+0x11f/0x1d0 [ 40.689604] btrfs_ioctl+0x2712/0x76d0 [ 40.693482] ? mark_held_locks+0xf0/0xf0 [ 40.697533] ? _kstrtoull+0x297/0x540 [ 40.701313] ? btrfs_ioctl_get_supported_features+0x50/0x50 [ 40.707005] ? _copy_from_user+0xd2/0x130 [ 40.711134] ? get_pid_task+0xcd/0x190 [ 40.715002] ? check_preemption_disabled+0x41/0x280 [ 40.720005] ? lock_downgrade+0x720/0x720 [ 40.724136] ? check_preemption_disabled+0x41/0x280 [ 40.729134] ? get_pid_task+0xf4/0x190 [ 40.733000] ? proc_fail_nth_write+0x95/0x1d0 [ 40.737474] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 40.742384] ? debug_check_no_obj_freed+0x201/0x490 [ 40.747380] ? __vfs_write+0xff/0x770 [ 40.751158] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 40.756067] ? common_file_perm+0x4e5/0x850 [ 40.760370] ? btrfs_ioctl_get_supported_features+0x50/0x50 [ 40.766063] do_vfs_ioctl+0xcdb/0x12e0 [ 40.769930] ? vfs_write+0x3d7/0x540 [ 40.773620] ? ioctl_preallocate+0x200/0x200 [ 40.778010] ? lock_downgrade+0x720/0x720 [ 40.782136] ? check_preemption_disabled+0x41/0x280 [ 40.787131] ? vfs_write+0x393/0x540 [ 40.790826] ? ksys_write+0x1c8/0x2a0 [ 40.794605] ksys_ioctl+0x9b/0xc0 [ 40.798047] __x64_sys_ioctl+0x6f/0xb0 [ 40.801914] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 40.806476] do_syscall_64+0xf9/0x620 [ 40.810259] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.815430] RIP: 0033:0x7f5f609aadb9 [ 40.819121] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 40.838017] RSP: 002b:00007fffb5b86318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 40.845708] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5f609aadb9 [ 40.852956] RDX: 0000000020001a80 RSI: 0000000050009417 RDI: 0000000000000004 [ 40.860208] RBP: 00007fffb5b86320 R08: 0000000000000002 R09: 00007f5f60003231 [ 40.867465] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 [ 40.874711] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.882273] Kernel Offset: disabled [ 40.885926] Rebooting in 86400 seconds..