efi/libstub: Fix harmless command line parsing bug
authorArd Biesheuvel <ard.biesheuvel@linaro.org>
Tue, 4 Apr 2017 16:02:45 +0000 (17:02 +0100)
committerIngo Molnar <mingo@kernel.org>
Wed, 5 Apr 2017 10:27:27 +0000 (12:27 +0200)
commit4c3f14bb87b683a2e5bbc6d6660b41893ecacfd0
treef1b0b5356f26419cc5e123eda5ba5314bcad6f52
parent318532bf63cfab779d763527d8b93e48c4a96dba
efi/libstub: Fix harmless command line parsing bug

When we parse the 'efi=' command line parameter in the stub, we
fail to take spaces into account. Currently, the only way this
could result in unexpected behavior is when the string 'nochunk'
appears as a separate command line argument after 'efi=xxx,yyy,zzz ',
so this is harmless in practice. But let's fix it nonetheless.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170404160245.27812-12-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
drivers/firmware/efi/libstub/efi-stub-helper.c