syzbot

UDF-fs: error (device loop0): udf_bitmap_new_block: bitmap for partition 0 corrupted (block 264 marked as free, partition length is 40)
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WARNING: CPU: 0 PID: 5931 at fs/udf/truncate.c:224 udf_truncate_extents+0xd46/0xeb0 fs/udf/truncate.c:224
Modules linked in:
CPU: 0 PID: 5931 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:udf_truncate_extents+0xd46/0xeb0 fs/udf/truncate.c:224
Code: 65 48 8b 04 25 28 00 00 00 48 3b 84 24 80 01 00 00 75 70 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 5a 7f 8d fe <0f> 0b eb 8e 44 89 e9 80 e1 07 38 c1 0f 8c ec f3 ff ff 4c 89 ef e8
RSP: 0018:ffffc900015f6ee0 EFLAGS: 00010293
RAX: ffffffff82f82ba6 RBX: 1ffff1100c3270d5 RCX: ffff88802bae8000
RDX: 0000000000000000 RSI: 0000000000000120 RDI: 0000000000000000
RBP: ffffc900015f70c0 R08: ffff88802bae8000 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000120 R15: 0000000000000120
FS:  0000555560381500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe93e5aa000 CR3: 000000007749b000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 udf_write_failed+0x180/0x1b0 fs/udf/inode.c:178
 udf_write_begin+0x21f/0x430 fs/udf/inode.c:264
 generic_perform_write+0x2fb/0x5b0 mm/filemap.c:4031
 udf_file_write_iter+0x2c0/0x620 fs/udf/file.c:111
 __kernel_write_iter+0x274/0x670 fs/read_write.c:517
 __kernel_write+0xf0/0x140 fs/read_write.c:537
 __dump_emit+0x206/0x310 fs/coredump.c:882
 elf_core_dump+0x2b53/0x36e0 fs/binfmt_elf.c:2163
 do_coredump+0x1755/0x2480 fs/coredump.c:833
 get_signal+0x1133/0x1400 kernel/signal.c:2888
 arch_do_signal_or_restart+0x9c/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:315
 exc_page_fault+0x8f/0x110 arch/x86/mm/fault.c:1524
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f8935b8f751
Code: 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:fffffffffffffe70 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f8935de5fa0 RCX: 00007f8935b8f749
RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000
RBP: 00007f8935c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f8935de5fa0 R14: 00007f8935de5fa0 R15: 0000000000000006
 </TASK>