loop4: detected capacity change from 0 to 4096 ntfs3: loop4: Different NTFS' sector size (4096) and media sector size (512) ntfs3: loop4: Mark volume as dirty due to NTFS errors ===================================================== 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] listxattr+0x24c/0x780 fs/xattr.c:822 path_listxattr fs/xattr.c:844 [inline] __do_sys_listxattr fs/xattr.c:856 [inline] __se_sys_listxattr fs/xattr.c:853 [inline] __ia32_sys_listxattr+0x174/0x300 fs/xattr.c:853 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 stored to memory at: ntfs_list_ea fs/ntfs3/xattr.c:223 [inline] ntfs_listxattr+0x4b0/0x740 fs/ntfs3/xattr.c:744 vfs_listxattr fs/xattr.c:473 [inline] listxattr+0x700/0x780 fs/xattr.c:820 path_listxattr fs/xattr.c:844 [inline] __do_sys_listxattr fs/xattr.c:856 [inline] __se_sys_listxattr fs/xattr.c:853 [inline] __ia32_sys_listxattr+0x174/0x300 fs/xattr.c:853 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] ntfs_read_ea+0x7cb/0x1180 fs/ntfs3/xattr.c:118 ntfs_list_ea fs/ntfs3/xattr.c:203 [inline] ntfs_listxattr+0x172/0x740 fs/ntfs3/xattr.c:744 vfs_listxattr fs/xattr.c:473 [inline] listxattr+0x700/0x780 fs/xattr.c:820 path_listxattr fs/xattr.c:844 [inline] __do_sys_listxattr fs/xattr.c:856 [inline] __se_sys_listxattr fs/xattr.c:853 [inline] __ia32_sys_listxattr+0x174/0x300 fs/xattr.c:853 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 26-27 of 63 are uninitialized Memory access of size 63 starts at ffff88815ea4d3c0 Data copied to user address 0000000020000400 CPU: 0 PID: 21088 Comm: syz-executor.4 Tainted: G W 6.3.0-rc3-syzkaller-g90ea0df61c98 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 =====================================================