===================================================== BUG: KMSAN: uninit-value in __hfsplus_ext_read_extent fs/hfsplus/extents.c:167 [inline] BUG: KMSAN: uninit-value in __hfsplus_ext_cache_extent+0x82c/0x970 fs/hfsplus/extents.c:191 __hfsplus_ext_read_extent fs/hfsplus/extents.c:167 [inline] __hfsplus_ext_cache_extent+0x82c/0x970 fs/hfsplus/extents.c:191 hfsplus_file_truncate+0x731/0xf50 fs/hfsplus/extents.c:600 hfsplus_file_release+0x168/0x700 fs/hfsplus/inode.c:233 __fput+0x6ac/0x1120 fs/file_table.c:465 ____fput+0x25/0x30 fs/file_table.c:493 task_work_run+0x268/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xbf/0x160 kernel/entry/common.c:218 do_syscall_64+0xda/0x1e0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4157 [inline] slab_alloc_node mm/slub.c:4200 [inline] __do_kmalloc_node mm/slub.c:4330 [inline] __kmalloc_noprof+0x946/0x1260 mm/slub.c:4343 kmalloc_noprof include/linux/slab.h:909 [inline] hfsplus_find_init+0x97/0x1d0 fs/hfsplus/bfind.c:21 hfsplus_file_truncate+0x53c/0xf50 fs/hfsplus/extents.c:583 hfsplus_file_release+0x168/0x700 fs/hfsplus/inode.c:233 __fput+0x6ac/0x1120 fs/file_table.c:465 ____fput+0x25/0x30 fs/file_table.c:493 task_work_run+0x268/0x310 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xbf/0x160 kernel/entry/common.c:218 do_syscall_64+0xda/0x1e0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 0 UID: 0 PID: 6560 Comm: syz.2.158 Not tainted 6.14.0-syzkaller-12508-g92b71befc349 #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 =====================================================