loop3: detected capacity change from 0 to 256
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BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:121 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_user+0xc0/0x100 lib/usercopy.c:40
 instrument_copy_to_user include/linux/instrumented.h:121 [inline]
 _copy_to_user+0xc0/0x100 lib/usercopy.c:40
 copy_to_user include/linux/uaccess.h:169 [inline]
 do_sys_name_to_handle fs/fhandle.c:73 [inline]
 __do_sys_name_to_handle_at fs/fhandle.c:109 [inline]
 __se_sys_name_to_handle_at+0x7c8/0x910 fs/fhandle.c:93
 __ia32_sys_name_to_handle_at+0xe3/0x150 fs/fhandle.c:93
 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
 __do_kmalloc_node mm/slab_common.c:966 [inline]
 __kmalloc+0x121/0x3c0 mm/slab_common.c:980
 kmalloc include/linux/slab.h:584 [inline]
 do_sys_name_to_handle fs/fhandle.c:40 [inline]
 __do_sys_name_to_handle_at fs/fhandle.c:109 [inline]
 __se_sys_name_to_handle_at+0x3a2/0x910 fs/fhandle.c:93
 __ia32_sys_name_to_handle_at+0xe3/0x150 fs/fhandle.c:93
 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

Bytes 18-19 of 20 are uninitialized
Memory access of size 20 starts at ffff88809f7ed5c0
Data copied to user address 0000000020000300

CPU: 1 PID: 6126 Comm: syz-executor.3 Not tainted 6.3.0-rc3-syzkaller-g90ea0df61c98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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