Hi Davidlohr, This is a no-change resubmission of a patch that I originally sent to LKML without CC-ing the relevant subsystem maintainers: https://lore.kernel.org/all/4ae6d363-2f9b-5028-db1a-061b6f1e8fbe@xxxxxxxxxxxxx/ I apologize for the oversight in my previous submission. -- While investigating a userspace issue, we noticed that the PARTNAME udev property for GPT partitions is not always valid ASCII / UTF-8. The value of the PARTNAME property for GPT partitions is initially set by the kernel using the utf16_le_to_7bit function. This function does a very basic conversion from UTF-16 to 7-bit ASCII by dropping the first byte of each UTF-16 character and replacing the remaining byte by "!" if it is not printable. Essentially, it means that characters outside the ASCII range get "converted" to other characters which are unrelated. Using this function for data that is presented in userspace feels questionable and using a proper conversion to UTF-8 would probably be preferable. However, the patch attached does not attempt to change this design. The patch attached actually addresses an implementation issue in the utf16_le_to_7bit function, which causes the output of the function to not always be valid 7-bit ASCII. Olivier Gayot (1): block: fix conversion of GPT partition name to 7-bit ASCII block/partitions/efi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Thanks, Olivier
