loop1: detected capacity change from 0 to 1024
=====================================================
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_call_function_single+0x4f/0x90 arch/x86/kernel/smp.c:267
 asm_sysvec_call_function_single+0x1f/0x30 arch/x86/include/asm/idtentry.h:704
 smap_restore arch/x86/include/asm/smap.h:90 [inline]
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:39 [inline]
 __msan_metadata_ptr_for_store_2+0x2b/0x40 mm/kmsan/instrumentation.c:92
 char2uni+0x13e/0x1d0 fs/nls/nls_utf8.c:-1
 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_slow+0x56a/0x770 fs/namei.c:1915
 lookup_slow+0x6a/0xd0 fs/namei.c:1932
 walk_component fs/namei.c:2278 [inline]
 link_path_walk+0x1575/0x23f0 fs/namei.c:2652
 path_lookupat+0x107/0xdf0 fs/namei.c:2808
 filename_lookup+0x2bc/0x800 fs/namei.c:2838
 ksys_truncate+0xbe/0x2f0 fs/open.c:140
 __do_sys_truncate fs/open.c:154 [inline]
 __se_sys_truncate fs/open.c:152 [inline]
 __x64_sys_truncate+0x74/0xb0 fs/open.c:152
 x64_sys_call+0x1ef4/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:77
 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
 asc2unichar fs/hfsplus/unicode.c:367 [inline]
 hfsplus_asc2uni+0x25f/0x1040 fs/hfsplus/unicode.c:458

CPU: 0 UID: 0 PID: 9734 Comm: syz.1.1652 Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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