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authorBenjamin Gray <bgray@linux.ibm.com>2023-03-20 15:08:38 +1100
committerMasahiro Yamada <masahiroy@kernel.org>2023-04-16 17:37:01 +0900
commit5efb685bb3af112038af78a2cdf28f0ffdad45f5 (patch)
tree49ea55e7ce2803846e6399e0ccc6d09e3a7bb64d /init
parentaa7d233f45b4c549750044c9921f7afcbe50925b (diff)
initramfs: Check negative timestamp to prevent broken cpio archive
Similar to commit 4c9d410f32b3 ("initramfs: Check timestamp to prevent broken cpio archive"), except asserts that the timestamp is non-negative. This can happen when the KBUILD_BUILD_TIMESTAMP is a value before UNIX epoch, which may be set when making reproducible builds that don't want to look like they use a valid date. While support for dates before 1970 might not be supported, this is more about preventing undetected CPIO corruption. The printf's use a minimum length format specifier, and will happily make the field longer than 8 characters if they need to. Signed-off-by: Benjamin Gray <bgray@linux.ibm.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Tested-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'init')
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