loop0: detected capacity change from 0 to 2048 UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: warning (device loop0): udf_truncate_tail_extent: Too long extent after EOF in inode 1346: i_size: 0 lbcount: 4096 extent 6+4096 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5325 at fs/udf/inode.c:2077 __udf_add_aext+0x540/0x6d0 fs/udf/inode.c:2076 Modules linked in: CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) 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+0x540/0x6d0 fs/udf/inode.c:2076 Code: 5f 5d c3 cc cc cc cc cc e8 1d 82 8d fe 90 0f 0b 90 e9 14 fc ff ff e8 0f 82 8d fe 90 0f 0b 90 e9 66 fd ff ff e8 01 82 8d fe 90 <0f> 0b 90 e9 50 fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c f7 RSP: 0018:ffffc9000d28ecc0 EFLAGS: 00010283 RAX: ffffffff83326fcf RBX: dffffc0000000000 RCX: 0000000000100000 RDX: ffffc9000dcda000 RSI: 0000000000000d44 RDI: 0000000000000d45 RBP: 0000000000000008 R08: ffff8880008d2440 R09: 0000000000000002 R10: 0000000000000001 R11: 0000000000000002 R12: 00000000000000b0 R13: 0000000000000000 R14: ffffc9000d28f0e0 R15: 0000000000000000 FS: 00007f04f9a196c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f04ed9ff000 CR3: 000000003fd49000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_add_aext fs/udf/inode.c:2138 [inline] udf_do_extend_file+0x576/0x1180 fs/udf/inode.c:544 inode_getblk fs/udf/inode.c:836 [inline] udf_map_block+0xf64/0x42a0 fs/udf/inode.c:447 __udf_get_block+0x52/0x250 fs/udf/inode.c:461 get_more_blocks fs/direct-io.c:648 [inline] do_direct_IO fs/direct-io.c:936 [inline] __blockdev_direct_IO+0x164c/0x3310 fs/direct-io.c:1243 blockdev_direct_IO include/linux/fs.h:3422 [inline] udf_direct_IO+0x139/0x200 fs/udf/inode.c:305 generic_file_direct_write+0x1d8/0x3e0 mm/filemap.c:4037 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4206 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:111 iter_file_splice_write+0x93a/0x1000 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0xfe/0x160 fs/splice.c:1158 splice_direct_to_actor+0x5a8/0xcc0 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1227 do_sendfile+0x4da/0x7d0 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1429 [inline] __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1415 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f04f8b8e969 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:00007f04f9a19038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f04f8db5fa0 RCX: 00007f04f8b8e969 RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000000003 RBP: 00007f04f8c10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000fffe82 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f04f8db5fa0 R15: 00007ffc8569ec08