loop0: detected capacity change from 0 to 1024 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5330 at fs/udf/inode.c:2080 __udf_add_aext+0x555/0x700 fs/udf/inode.c:2079 Modules linked in: CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted 6.12.0-rc5-syzkaller-00005-ge42b1a9a2557 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__udf_add_aext+0x555/0x700 fs/udf/inode.c:2079 Code: f0 d9 fe 49 8b 3c 24 4c 89 fe e8 c6 66 fe fe 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 4c 33 70 fe 90 <0f> 0b 90 e9 e7 fb ff ff e8 3e 33 70 fe 90 0f 0b 90 e9 54 fc ff ff RSP: 0018:ffffc9000d246f78 EFLAGS: 00010287 RAX: ffffffff8324a544 RBX: 1ffff92001a48ebd RCX: 0000000000040000 RDX: ffffc9000d6b2000 RSI: 0000000000011759 RDI: 000000000001175a RBP: 00000000000001d0 R08: ffffffff8324a126 R09: ffffffff8324a056 R10: 0000000000000002 R11: ffff888000ab8000 R12: ffffc9000d2475e0 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc9000d2475e8 FS: 00007f6b7ad146c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6b6e47fe00 CR3: 00000000403f2000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_setup_indirect_aext+0x7c0/0xb40 fs/udf/inode.c:2042 udf_add_aext fs/udf/inode.c:2132 [inline] udf_do_extend_file+0x8dd/0x1280 fs/udf/inode.c:584 inode_getblk fs/udf/inode.c:835 [inline] udf_map_block+0x1896/0x5340 fs/udf/inode.c:447 __udf_get_block+0x126/0x410 fs/udf/inode.c:461 __block_write_begin_int+0x50c/0x1a70 fs/buffer.c:2121 block_write_begin+0x8f/0x120 fs/buffer.c:2231 udf_write_begin+0x104/0x350 fs/udf/inode.c:256 generic_perform_write+0x344/0x6d0 mm/filemap.c:4054 udf_file_write_iter+0x2fc/0x660 fs/udf/file.c:111 new_sync_write fs/read_write.c:590 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:683 ksys_pwrite64 fs/read_write.c:798 [inline] __do_sys_pwrite64 fs/read_write.c:808 [inline] __se_sys_pwrite64 fs/read_write.c:805 [inline] __x64_sys_pwrite64+0x1aa/0x230 fs/read_write.c:805 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6b79f7e719 Code: ff ff c3 66 2e 0f 1f 84 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 RSP: 002b:00007f6b7ad14038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007f6b7a135f80 RCX: 00007f6b79f7e719 RDX: 0000000000000001 RSI: 0000000020000300 RDI: 0000000000000008 RBP: 00007f6b79ff132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6b7a135f80 R15: 00007ffe1abb7028