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kernel BUG at fs/ext4/inode.c:2816!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 1349 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
Workqueue: writeback wb_workfn (flush-7:2)
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : ext4_do_writepages+0x3bec/0x3bf0 fs/ext4/inode.c:2815
lr : ext4_do_writepages+0x3bec/0x3bf0 fs/ext4/inode.c:2815
sp : ffff800095b16d40
x29: ffff800095b17100 x28: ffff0000e90b8568 x27: dfff800000000000
x26: 1ffff00012b62ea8 x25: ffff700012b62de0 x24: 1fffe0001d21700a
x23: ffff700012b62e2c x22: ffff0000e90b8050 x21: ffff0000d53a2000
x20: 0000004210000000 x19: ffff0000e058d1b8 x18: 00000000ffffffff
x17: 0000000000000003 x16: ffff800088bf7000 x15: ffff800080da1ac0
x14: ffff800080da3b90 x13: 0000000000000001 x12: 0000000000000003
x11: 1fffe0001c0b1a3d x10: 0000000004248060 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : ffff800080d9ff64
x5 : ffff0000d8c29a18 x4 : 00000000ffffffff x3 : ffff80008104d19c
x2 : 0000004000000000 x1 : ffff0000c8f73b00 x0 : 0000000000000000
Call trace:
 ext4_do_writepages+0x3bec/0x3bf0 fs/ext4/inode.c:2815 (P)
 ext4_writepages+0x198/0x2dc fs/ext4/inode.c:3032
 do_writepages+0x284/0x47c mm/page-writeback.c:2560
 __writeback_single_inode+0x140/0x1ae4 fs/fs-writeback.c:1788
 writeback_sb_inodes+0x798/0x1720 fs/fs-writeback.c:2099
 wb_writeback+0x3bc/0x10cc fs/fs-writeback.c:2284
 wb_do_writeback fs/fs-writeback.c:2452 [inline]
 wb_workfn+0x318/0xda8 fs/fs-writeback.c:2497
 process_one_work kernel/workqueue.c:3387 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838
Code: aa1303e0 97c16884 d4210000 97d826f2 (d4210000) 
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