efi/printf: Abort on invalid format

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If we get an invalid conversion specifier, bail out instead of trying to
fix it up. The format string likely has a typo or assumed we support
something that we don't, in either case the remaining arguments won't
match up with the remaining format string.

Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200518190716.751506-16-nivedita@alum.mit.edu
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

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Arvind Sankar 2020-05-18 15:07:07 -04:00 • committed by Ard Biesheuvel

parent 6c4bcd8a46

commit f97ca2c816

1 changed files with 8 additions and 6 deletions

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drivers/firmware/efi/libstub/vsprintf.c

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