On Wed, May 20, 2020 at 08:54:49PM +0300, Dan Carpenter wrote: > On Wed, May 20, 2020 at 11:43:08AM -0400, Arvind Sankar wrote: > > On Wed, May 20, 2020 at 05:09:03PM +0300, Dan Carpenter wrote: > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next > > > head: e5fbadd1179cdadeaa44d71a9ec068c5bc100524 > > > commit: 85f5afd4322d294a7eca0d304744a1646113fbd9 [39/40] efi/libstub: Use snprintf with %ls to convert the command line > > > config: x86_64-defconfig (attached as .config) > > > > > > If you fix the issue, kindly add following tag as appropriate > > > Reported-by: kbuild test robot <lkp(a)intel.com&gt; > > > Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; > > > > > > New smatch warnings: > > > drivers/firmware/efi/libstub/efi-stub-helper.c:265 efi_convert_cmdline() warn: qualifier 'l' ignored for %s specifier > > > > > > # https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git/commit/?id=85... > > > git remote add efi https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git > > > git remote update efi > > > git checkout 85f5afd4322d294a7eca0d304744a1646113fbd9 > > > vim +/l +265 drivers/firmware/efi/libstub/efi-stub-helper.c > > > > > > c625d1c203941f drivers/firmware/efi/efi-stub-helper.c H. Peter Anvin 2013-09-20 258 options_bytes++; /* NUL termination */ > > > 9403e462fb5ffa drivers/firmware/efi/efi-stub-helper.c Leif Lindholm 2014-04-04 259 > > > 1e45bf7372c48c drivers/firmware/efi/libstub/efi-stub-helper.c Ard Biesheuvel 2020-02-10 260 status = efi_allocate_pages(options_bytes, &cmdline_addr, max_addr); > > > 5fef3870c572a3 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22 261 if (status != EFI_SUCCESS) > > > 5fef3870c572a3 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22 262 return NULL; > > > 5fef3870c572a3 drivers/firmware/efi/efi-stub-helper.c Roy Franz 2013-09-22 263 > > > 85f5afd4322d29 drivers/firmware/efi/libstub/efi-stub-helper.c Arvind Sankar 2020-05-18 264 snprintf((char *)cmdline_addr, options_bytes, "%.*ls", > > > ^ > > > The "l" doesn't make sense here? > > > > The previous patches add support for wide strings to the version of > > snprintf used here. > > Ah. Thanks. I will update the Smatch check. > > regards, > dan carpenter > Note that the main kernel's printf still doesn't support it. It's only been added to the version in drivers/firmware/efi/libstub/vsprintf.c (added as part of this series).