loop4: detected capacity change from 0 to 64
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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+0x82/0xa40 kernel/entry/common.c:167
 sysvec_apic_timer_interrupt+0x52/0x90 arch/x86/kernel/apic/apic.c:1062
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:674
 kmsan_get_metadata+0xf1/0x160 mm/kmsan/shadow.c:141
 kmsan_get_shadow_origin_ptr+0x35/0xb0 mm/kmsan/shadow.c:97
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:38 [inline]
 __msan_metadata_ptr_for_store_2+0x27/0x40 mm/kmsan/instrumentation.c:92
 char2uni+0x13f/0x1d0 fs/nls/nls_utf8.c:-1
 hfs_asc2mac+0x243/0x1010 fs/hfs/trans.c:113
 hfs_cat_build_key+0x67/0xe0 fs/hfs/catalog.c:28
 hfs_lookup+0x1ab/0x410 fs/hfs/dir.c:31
 __lookup_slow+0x4d5/0x6d0 fs/namei.c:1919
 lookup_slow+0x6a/0xd0 fs/namei.c:1936
 walk_component fs/namei.c:2282 [inline]
 link_path_walk+0x1573/0x23f0 fs/namei.c:2656
 path_openat+0x322/0x6540 fs/namei.c:4859
 do_file_open+0x2aa/0x680 fs/namei.c:4892
 do_sys_openat2+0x17c/0x390 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1385
 x64_sys_call+0x2445/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15d/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable u created at:
 char2uni+0x43/0x1d0 fs/nls/nls_utf8.c:32
 hfs_asc2mac+0x243/0x1010 fs/hfs/trans.c:113

CPU: 1 UID: 0 PID: 12015 Comm: syz.4.2936 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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