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authorEmmanuel Grumbach <emmanuel.grumbach@intel.com>2017-01-07 19:57:46 +0200
committerLuca Coelho <luciano.coelho@intel.com>2017-02-08 17:54:20 +0200
commit1aa0ec5cdf60b23dfc152f0e9e205f58b0a546b2 (patch)
tree800e63cc1524c42c4fb53030afa4774f64451520 /tools/include/asm/barrier.h
parent6eac0e817aee2518a96b5ce9d02b904e0667f370 (diff)
iwlwifi: dvm: don't call << operator with a negative value
In https://bugzilla.kernel.org/show_bug.cgi?id=177341 Bob reported a UBSAN WARNING on rs.c. Undefined behaviour in drivers/net/wireless/intel/iwlwifi/dvm/rs.c:746:18 This because i = index - 1; for (mask = (1 << i); i >= 0; i--, mask >>= 1) is unsafe: i could be negative and hence we can call << on a negative value. This bug doesn't have any real impact since the condition of the for loop will prevent any usage of mask. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=177341 Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'tools/include/asm/barrier.h')
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