syzbot

loop3: detected capacity change from 0 to 1024
hfsplus: Filesystem was not cleanly unmounted, running fsck.hfsplus is recommended.  mounting read-only.
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BUG: KMSAN: uninit-value in strncmp+0x11e/0x180 lib/string.c:307
 strncmp+0x11e/0x180 lib/string.c:307
 is_known_namespace fs/hfsplus/xattr.c:45 [inline]
 name_len fs/hfsplus/xattr.c:397 [inline]
 hfsplus_listxattr+0xe61/0x1aa0 fs/hfsplus/xattr.c:746
 vfs_listxattr fs/xattr.c:473 [inline]
 listxattr+0x700/0x780 fs/xattr.c:820
 path_listxattr fs/xattr.c:844 [inline]
 __do_sys_llistxattr fs/xattr.c:862 [inline]
 __se_sys_llistxattr fs/xattr.c:859 [inline]
 __ia32_sys_llistxattr+0x171/0x300 fs/xattr.c:859
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 slab_post_alloc_hook+0x12d/0xb60 mm/slab.h:774
 slab_alloc_node mm/slub.c:3452 [inline]
 __kmem_cache_alloc_node+0x518/0x920 mm/slub.c:3491
 kmalloc_trace+0x51/0x200 mm/slab_common.c:1061
 kmalloc include/linux/slab.h:580 [inline]
 hfsplus_listxattr+0x4e0/0x1aa0 fs/hfsplus/xattr.c:701
 vfs_listxattr fs/xattr.c:473 [inline]
 listxattr+0x700/0x780 fs/xattr.c:820
 path_listxattr fs/xattr.c:844 [inline]
 __do_sys_llistxattr fs/xattr.c:862 [inline]
 __se_sys_llistxattr fs/xattr.c:859 [inline]
 __ia32_sys_llistxattr+0x171/0x300 fs/xattr.c:859
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 1 PID: 7070 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-g81af97bdef5e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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