loop0: detected capacity change from 0 to 64 ===================================================== BUG: KMSAN: uninit-value in hfs_bnode_read_u8 fs/hfs/bnode.c:54 [inline] BUG: KMSAN: uninit-value in hfs_bnode_dump+0x421/0x4c0 fs/hfs/bnode.c:178 hfs_bnode_read_u8 fs/hfs/bnode.c:54 [inline] hfs_bnode_dump+0x421/0x4c0 fs/hfs/bnode.c:178 hfs_brec_remove+0x8d9/0xa60 fs/hfs/brec.c:225 hfs_cat_move+0x1068/0x1390 fs/hfs/catalog.c:364 hfs_rename+0x313/0x550 fs/hfs/dir.c:299 vfs_rename+0x1e87/0x2460 fs/namei.c:5121 do_renameat2+0x175e/0x1d70 fs/namei.c:5270 __do_sys_rename fs/namei.c:5317 [inline] __se_sys_rename fs/namei.c:5315 [inline] __x64_sys_rename+0xd7/0x140 fs/namei.c:5315 x64_sys_call+0x3553/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:83 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable data.i created at: hfs_bnode_read_u16 fs/hfs/bnode.c:44 [inline] hfs_bnode_dump+0x393/0x4c0 fs/hfs/bnode.c:162 hfs_brec_remove+0x8d9/0xa60 fs/hfs/brec.c:225 CPU: 0 UID: 0 PID: 6823 Comm: syz.0.181 Not tainted 6.15.0-rc3-syzkaller-00076-ge72e9e693307 #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 =====================================================