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authorArjan van de Ven <arjan@linux.intel.com>2008-10-25 12:41:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-26 11:22:08 -0700
commit4d36a9e65d4966b433b2f3424d9457468bc80e00 (patch)
tree8c7b8e64ae40769a3f9f948491987ba93698ee3a /arch/m68knommu/Kconfig
parent44a504c405ae5c3a80e71acf71d6b1cb0db70715 (diff)
downloadlinux-linaro-4d36a9e65d4966b433b2f3424d9457468bc80e00.tar.gz
select: deal with math overflow from borderline valid userland data
Some userland apps seem to pass in a "0" for the seconds, and several seconds worth of usecs to select(). The old kernels accepted this just fine, so the new kernels must too. However, due to the upscaling of the microseconds to nanoseconds we had some cases where we got math overflow, and depending on the GCC version (due to inlining decisions) that actually resulted in an -EINVAL return. This patch fixes this by adding the excess microseconds to the seconds field. Also with thanks to Marcin Slusarz for spotting some implementation bugs in the diagnostics patches. Reported-by: Carlos R. Mafra <crmafra2@gmail.com> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m68knommu/Kconfig')
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