R13: 0000000000000004 R14: 0000000020000248 R15: 0000000000000003 EXT4-fs (loop5): unmounting filesystem 00000000-0000-0000-0000-000000000000. ================================================ WARNING: lock held when returning to user space! 6.18.0-rc7-next-20251128 #1 Not tainted ------------------------------------------------ syz-executor.7/13800 is leaving the kernel with locks still held! 1 lock held by syz-executor.7/13800: #0: ffff88800b351c88 (&sb->s_type->i_mutex_key#28/1){+.+.}-{4:4}, at: start_creating_noperm+0x84/0xd0 EXT4-fs (loop1): ext4_check_descriptors: Block bitmap for group 0 not in group (block 196608)! EXT4-fs (loop1): group descriptors corrupted! loop2: detected capacity change from 0 to 4132 loop4: detected capacity change from 0 to 4132 EXT4-fs (loop2): inodes count not valid: 5 vs 32 loop1: detected capacity change from 0 to 264192 EXT4-fs (loop4): ext4_check_descriptors: Block bitmap for group 0 overlaps superblock EXT4-fs (loop4): group descriptors corrupted! EXT4-fs (loop1): ext4_check_descriptors: Block bitmap for group 0 not in group (block 196608)! EXT4-fs (loop1): group descriptors corrupted!