------------[ cut here ]------------
WARNING: CPU: 0 PID: 4378 at fs/udf/truncate.c:209 udf_truncate_extents+0xa0c/0xb60 fs/udf/truncate.c:-1
Modules linked in:

CPU: 0 PID: 4378 Comm: kworker/u4:6 Not tainted 6.1.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn
 (flush-7:1)

pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : udf_truncate_extents+0xa0c/0xb60 fs/udf/truncate.c:-1
lr : udf_truncate_extents+0xa08/0xb60 fs/udf/truncate.c:209
sp : ffff800020a263c0
x29: ffff800020a26540
 x28: 00000000000000ff
 x27: 0000000000000000

x26: ffff0000e1f6c6b8
 x25: 0000000000200981
 x24: 0000000000027a00

x23: ffff0000d4f82000
 x22: ffff800020a26460
 x21: 1fffe0001c3ed8d7

x20: ffff800020a26440
 x19: ffff0000e1f6c7d0
 x18: ffff800011a7bce0

x17: ffff8000181a1000
 x16: ffff8000082d0750
 x15: 0000000000000000

x14: 0000000000000001
 x13: 0000000000ff0100
 x12: 0000000000ff0100

x11: ff00800009826ed4
 x10: 0000000000000000
 x9 : ffff800009826ed4

x8 : ffff0000d12bb780
 x7 : ffff80000980fdc0
 x6 : 0000000000000000

x5 : 0000000000000001
 x4 : ffff800020a262b4
 x3 : 0000000000000001

x2 : ffff800020a26468
 x1 : 0000000000027b81
 x0 : 0000000000000000

Call trace:
 udf_truncate_extents+0xa0c/0xb60 fs/udf/truncate.c:-1
 udf_do_extend_file+0xa14/0xd8c fs/udf/inode.c:479
 inode_getblk fs/udf/inode.c:686 [inline]
 udf_get_block+0xbcc/0x32e8 fs/udf/inode.c:359
 __block_write_full_page+0x2f0/0xed4 fs/buffer.c:1745
 block_write_full_page+0x124/0x154 fs/buffer.c:-1
 __mpage_writepage+0xf58/0x126c fs/mpage.c:629
 write_cache_pages+0x73c/0xdd4 mm/page-writeback.c:2382
 mpage_writepages+0xe8/0x194 fs/mpage.c:664
 udf_writepages+0x30/0x40 fs/udf/inode.c:193
 do_writepages+0x2c0/0x4fc mm/page-writeback.c:2491
 __writeback_single_inode+0x164/0x157c fs/fs-writeback.c:1612
 writeback_sb_inodes+0x824/0x1404 fs/fs-writeback.c:1903
 __writeback_inodes_wb+0x110/0x394 fs/fs-writeback.c:1974
 wb_writeback+0x414/0xfb0 fs/fs-writeback.c:2079
 wb_check_old_data_flush fs/fs-writeback.c:2179 [inline]
 wb_do_writeback fs/fs-writeback.c:2232 [inline]
 wb_workfn+0xa5c/0xd98 fs/fs-writeback.c:2260
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
irq event stamp: 554606
hardirqs last  enabled at (554605): [<ffff800008a7a684>] lookup_bh_lru fs/buffer.c:1291 [inline]
hardirqs last  enabled at (554605): [<ffff800008a7a684>] __find_get_block+0x1c8/0xdfc fs/buffer.c:1303
hardirqs last disabled at (554606): [<ffff80001191c930>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (554016): [<ffff8000081a8e70>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (554016): [<ffff8000081a8e70>] handle_softirqs+0xaf8/0xc6c kernel/softirq.c:624
softirqs last disabled at (554011): [<ffff800008020164>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---