------------[ cut here ]------------
WARNING: CPU: 1 PID: 4555 at fs/udf/inode.c:1935 __udf_add_aext+0x51a/0x6c0 fs/udf/inode.c:1934
Modules linked in:
CPU: 1 PID: 4555 Comm: syz.3.67 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__udf_add_aext+0x51a/0x6c0 fs/udf/inode.c:1934
Code: 08 4c 89 f7 e8 f7 71 f6 fe 49 8b 3e 4c 89 e6 e8 5c 38 10 ff 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 56 53 b1 fe <0f> 0b e9 1b fc ff ff e8 4a 53 b1 fe 0f 0b e9 6f fd ff ff e8 3e 53
RSP: 0018:ffffc9000305f2b8 EFLAGS: 00010287
RAX: ffffffff82c79f4a RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc9000f18d000 RSI: 000000000000abae RDI: 000000000000abaf
RBP: 1ffff9200060beed R08: ffff88807c1b5940 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000001d0
R13: 0000000000000000 R14: ffffc9000305f760 R15: ffffc9000305f768
FS:  00007f03c3c286c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f03c5a3e540 CR3: 0000000062c68000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_setup_indirect_aext+0x552/0x720 fs/udf/inode.c:1900
 udf_add_aext fs/udf/inode.c:1987 [inline]
 udf_do_extend_file+0x6ab/0x1090 fs/udf/inode.c:472
 inode_getblk fs/udf/inode.c:708 [inline]
 udf_get_block+0xf01/0x41a0 fs/udf/inode.c:358
 __block_write_begin_int+0x565/0x15d0 fs/buffer.c:2012
 __block_write_begin fs/buffer.c:2062 [inline]
 block_write_begin+0x4d/0xc0 fs/buffer.c:2122
 udf_write_begin+0x35/0x70 fs/udf/inode.c:212
 generic_perform_write+0x2b6/0x550 mm/filemap.c:3785
 __generic_file_write_iter+0x261/0x4e0 mm/filemap.c:3912
 udf_file_write_iter+0x285/0x510 fs/udf/file.c:163
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x748/0xd70 fs/read_write.c:594
 ksys_pwrite64 fs/read_write.c:701 [inline]
 __do_sys_pwrite64 fs/read_write.c:711 [inline]
 __se_sys_pwrite64 fs/read_write.c:708 [inline]
 __x64_sys_pwrite64+0x197/0x220 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f03c59f0e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f03c3c28028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f03c5c79090 RCX: 00007f03c59f0e59
RDX: 0000000000000001 RSI: 0000200000000200 RDI: 0000000000000006
RBP: 00007f03c5a86e6f R08: 0000000000000000 R09: 0000000000000000
R10: 00000080000000e0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f03c5c79128 R14: 00007f03c5c79090 R15: 00007ffca6fde598
 </TASK>