WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= ===================================================== BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [inline] _copy_to_user+0xbc/0x100 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [inline] do_sys_name_to_handle fs/fhandle.c:73 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94 __ia32_sys_name_to_handle_at+0xe3/0x150 fs/fhandle.c:94 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was created at: slab_post_alloc_hook mm/slub.c:3819 [inline] slab_alloc_node mm/slub.c:3860 [inline] __do_kmalloc_node mm/slub.c:3980 [inline] __kmalloc+0x919/0xf80 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] do_sys_name_to_handle fs/fhandle.c:39 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94 __ia32_sys_name_to_handle_at+0xe3/0x150 fs/fhandle.c:94 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Bytes 18-19 of 20 are uninitialized Memory access of size 20 starts at ffff8880ae1a7ac0 Data copied to user address 0000000020000140 CPU: 1 PID: 5406 Comm: syz-executor.0 Not tainted 6.8.0-rc5-syzkaller-00278-g603c04e27c3e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 =====================================================