=====================================================
BUG: KMSAN: uninit-value in hfsplus_compose_lookup fs/hfsplus/unicode.c:108 [inline]
BUG: KMSAN: uninit-value in hfsplus_uni2asc+0x9a6/0x27a0 fs/hfsplus/unicode.c:188
 hfsplus_compose_lookup fs/hfsplus/unicode.c:108 [inline]
 hfsplus_uni2asc+0x9a6/0x27a0 fs/hfsplus/unicode.c:188
 hfsplus_readdir+0xd60/0x1a70 fs/hfsplus/dir.c:207
 iterate_dir+0x44f/0x620 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:410 [inline]
 __se_sys_getdents64+0x17e/0x550 fs/readdir.c:396
 __x64_sys_getdents64+0x97/0xe0 fs/readdir.c:396
 x64_sys_call+0x3a14/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:218
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4186 [inline]
 slab_alloc_node mm/slub.c:4229 [inline]
 __do_kmalloc_node mm/slub.c:4364 [inline]
 __kmalloc_noprof+0x95f/0x1310 mm/slub.c:4377
 kmalloc_noprof include/linux/slab.h:909 [inline]
 __bch2_trans_get+0x963/0x13e0 fs/bcachefs/btree_iter.c:3497
 btree_update_nodes_written fs/bcachefs/btree_update_interior.c:666 [inline]
 btree_interior_update_work+0x226/0x4a00 fs/bcachefs/btree_update_interior.c:867
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xb91/0x1d80 kernel/workqueue.c:3319
 worker_thread+0xedf/0x1590 kernel/workqueue.c:3400
 kthread+0xd59/0xf00 kernel/kthread.c:463
 ret_from_fork+0x1e3/0x310 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

CPU: 0 UID: 0 PID: 6388 Comm: syz-executor Tainted: G        W           6.17.0-rc1-syzkaller-00116-gd7ee5bdce789 #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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