=====================================================
BUG: KMSAN: uninit-value in irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:464
 irqentry_exit_to_kernel_mode_preempt+0xb0/0xc0 include/linux/irq-entry-common.h:464
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x82/0xa00 kernel/entry/common.c:164
 sysvec_apic_timer_interrupt+0x52/0x90 arch/x86/kernel/apic/apic.c:1061
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:697
 char2uni+0x18d/0x1d0 fs/nls/nls_utf8.c:41
 asc2unichar fs/hfsplus/unicode.c:367 [inline]
 hfsplus_asc2uni+0x25f/0x1040 fs/hfsplus/unicode.c:458
 hfsplus_cat_build_key+0xaf/0x1d0 fs/hfsplus/catalog.c:49
 hfsplus_lookup+0x1fa/0xf70 fs/hfsplus/dir.c:47
 lookup_open fs/namei.c:4484 [inline]
 open_last_lookups fs/namei.c:4611 [inline]
 path_openat+0x2c84/0x64c0 fs/namei.c:4855
 do_file_open+0x2aa/0x680 fs/namei.c:4887
 do_sys_openat2+0x163/0x370 fs/open.c:1364
 do_sys_open fs/open.c:1370 [inline]
 __do_compat_sys_openat fs/open.c:1432 [inline]
 __se_compat_sys_openat fs/open.c:1430 [inline]
 __ia32_compat_sys_openat+0x238/0x300 fs/open.c:1430
 ia32_sys_call+0x330b/0x4360 arch/x86/include/generated/asm/syscalls_32.h:296
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x195/0x470 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/syscall_32.c:332
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/syscall_32.c:370
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Local variable u created at:
 char2uni+0x43/0x1d0 fs/nls/nls_utf8.c:32
 asc2unichar fs/hfsplus/unicode.c:367 [inline]
 hfsplus_asc2uni+0x25f/0x1040 fs/hfsplus/unicode.c:458

CPU: 1 UID: 0 PID: 14440 Comm: syz.7.1659 Tainted: G        W    L      syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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