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author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2017-01-07 19:57:46 +0200 |
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committer | Luca Coelho <luciano.coelho@intel.com> | 2017-02-08 17:54:20 +0200 |
commit | 1aa0ec5cdf60b23dfc152f0e9e205f58b0a546b2 (patch) | |
tree | 800e63cc1524c42c4fb53030afa4774f64451520 /include/net/addrconf.h | |
parent | 6eac0e817aee2518a96b5ce9d02b904e0667f370 (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 'include/net/addrconf.h')
0 files changed, 0 insertions, 0 deletions