------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2827!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 1291 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Workqueue: writeback wb_workfn (flush-7:3)
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : ext4_do_writepages+0x3bbc/0x3bc0 fs/ext4/inode.c:2826
lr : ext4_do_writepages+0x3bbc/0x3bc0 fs/ext4/inode.c:2826
sp : ffff8000959e6d20
x29: ffff8000959e70e0 x28: 0000000000000001 x27: dfff800000000000
x26: ffff700012b3cddc x25: 1ffff00012b3cea4 x24: 1fffe0001eb4338e
x23: ffff700012b3ce28 x22: ffff0000f5a19c70 x21: ffff0000cb5fc000
x20: 0000004210000000 x19: ffff0000f6ab2000 x18: 1fffe00035bce428
x17: 0000000000000003 x16: ffff800088ac7000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000008 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000000003 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000080
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800081017928
x2 : 0000004000000000 x1 : ffff0000c95f1d40 x0 : 0000000000000000
Call trace:
 ext4_do_writepages+0x3bbc/0x3bc0 fs/ext4/inode.c:2826 (P)
 ext4_writepages+0x198/0x2dc fs/ext4/inode.c:3043
 do_writepages+0x284/0x47c mm/page-writeback.c:2571
 __writeback_single_inode+0x140/0x1880 fs/fs-writeback.c:1787
 writeback_sb_inodes+0x798/0x1720 fs/fs-writeback.c:2079
 wb_writeback+0x3bc/0x10cc fs/fs-writeback.c:2264
 wb_do_writeback fs/fs-writeback.c:2432 [inline]
 wb_workfn+0x318/0xda8 fs/fs-writeback.c:2477
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
Code: aa1303e0 97c24004 d4210000 97d8ea5c (d4210000) 
---[ end trace 0000000000000000 ]---