[  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 '10.128.1.5' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   36.621480] BTRFS: device fsid 24c7a497-3402-47dd-bef8-82358f5f30e0 devid 1 transid 8 /dev/loop0
[   36.637174] BTRFS info (device loop0): turning on flush-on-commit
[   36.643553] BTRFS info (device loop0): using free space tree
[   36.650595] BTRFS info (device loop0): has skinny extents
[   36.668490] BTRFS info (device loop0): checking UUID tree
[   36.678160] ------------[ cut here ]------------
[   36.683156] WARNING: CPU: 1 PID: 8129 at fs/fs-writeback.c:2370 __writeback_inodes_sb_nr.cold+0x11/0x18
[   36.692691] Kernel panic - not syncing: panic_on_warn set ...
[   36.692691] 
[   36.700065] CPU: 1 PID: 8129 Comm: btrfs-transacti Not tainted 4.19.211-syzkaller #0
[   36.707943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[   36.717296] Call Trace:
[   36.719894]  dump_stack+0x1fc/0x2ef
[   36.723516]  panic+0x26a/0x50e
[   36.726698]  ? __warn_printk+0xf3/0xf3
[   36.730568]  ? __writeback_inodes_sb_nr.cold+0x11/0x18
[   36.735823]  ? __probe_kernel_read+0x130/0x1b0
[   36.740380]  ? __warn.cold+0x5/0x5a
[   36.743980]  ? __warn+0xe4/0x200
[   36.747325]  ? __writeback_inodes_sb_nr.cold+0x11/0x18
[   36.752576]  __warn.cold+0x20/0x5a
[   36.756189]  ? __writeback_inodes_sb_nr.cold+0x11/0x18
[   36.761442]  report_bug+0x262/0x2b0
[   36.765050]  do_error_trap+0x1d7/0x310
[   36.768912]  ? math_error+0x310/0x310
[   36.772687]  ? __irq_work_queue_local+0x101/0x160
[   36.777508]  ? irq_work_queue+0x29/0x80
[   36.781456]  ? error_entry+0x72/0xd0
[   36.785145]  ? trace_hardirqs_off_caller+0x6e/0x210
[   36.790139]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   36.794958]  invalid_op+0x14/0x20
[   36.798387] RIP: 0010:__writeback_inodes_sb_nr.cold+0x11/0x18
[   36.804249] Code: e1 e8 36 ba 6d f9 48 c7 c7 c0 f9 74 88 e8 95 eb fe ff 0f 0b e9 75 12 b9 f9 e8 1e ba 6d f9 48 c7 c7 c0 f9 74 88 e8 7d eb fe ff <0f> 0b e9 c9 34 b9 f9 e8 06 ba 6d f9 48 c7 c7 c0 f9 74 88 e8 65 eb
[   36.823136] RSP: 0018:ffff8880a1b8fc48 EFLAGS: 00010286
[   36.828475] RAX: 0000000000000024 RBX: 1ffff11014371f8b RCX: 0000000000000000
[   36.835723] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1014371f7b
[   36.843140] RBP: ffff8880b0594980 R08: 0000000000000024 R09: 0000000000000000
[   36.850386] R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000006400
[   36.857642] R13: ffff888099dbf100 R14: ffff8880b0594ab0 R15: ffff8880a1b8fc88
[   36.864899]  ? vprintk_func+0x81/0x180
[   36.868773]  ? __writeback_inodes_sb_nr.cold+0x11/0x18
[   36.874031]  ? bdi_split_work_to_wbs+0xfa0/0xfa0
[   36.878765]  ? btrfs_commit_transaction+0x1dfa/0x2480
[   36.883934]  ? get_nr_dirty_inodes+0x19e/0x210
[   36.888506]  btrfs_commit_transaction+0x1bb1/0x2480
[   36.893499]  ? do_raw_spin_unlock+0x171/0x230
[   36.897969]  ? _raw_spin_unlock+0x29/0x40
[   36.902095]  ? btrfs_apply_pending_changes+0x150/0x150
[   36.907353]  ? btrfs_record_root_in_trans+0x13c/0x190
[   36.912621]  ? start_transaction+0x239/0xf90
[   36.917017]  transaction_kthread+0x385/0x490
[   36.921402]  ? __kthread_parkme+0x133/0x1e0
[   36.925698]  ? open_ctree+0x61e0/0x61e0
[   36.929656]  kthread+0x33f/0x460
[   36.932997]  ? kthread_park+0x180/0x180
[   36.936953]  ret_from_fork+0x24/0x30
[   36.941079] Kernel Offset: disabled
[   36.944741] Rebooting in 86400 seconds..