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authorSasha Levin <levinsasha928@gmail.com>2012-03-15 12:36:14 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-02 09:27:09 -0700
commitd16d493a1c1079e4e065ee6070b2413add846719 (patch)
treee995ef1145e984cbb22749152de3ecf3e7b8a3a5 /lib
parent6368b0424486055c636cdc47af3de83d81478f7f (diff)
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ntp: Fix integer overflow when setting time
commit a078c6d0e6288fad6d83fb6d5edd91ddb7b6ab33 upstream. 'long secs' is passed as divisor to div_s64, which accepts a 32bit divisor. On 64bit machines that value is trimmed back from 8 bytes back to 4, causing a divide by zero when the number is bigger than (1 << 32) - 1 and all 32 lower bits are 0. Use div64_long() instead. Signed-off-by: Sasha Levin <levinsasha928@gmail.com> Cc: johnstul@us.ibm.com Link: http://lkml.kernel.org/r/1331829374-31543-2-git-send-email-levinsasha928@gmail.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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