| commit | a078c6d0e6288fad6d83fb6d5edd91ddb7b6ab33 | |
| author | Sasha Levin <levinsasha928@gmail.com> | |
| Thu, 15 Mar 2012 16:36:14 +0000 (15 12:36 -0400) | ||
| committer | Thomas Gleixner <tglx@linutronix.de> | |
| Thu, 15 Mar 2012 20:41:34 +0000 (15 21:41 +0100) | ||
| tree | 473eb7484d966e65c51487c72d47502096ab7b99 | treesnapshot (tar.gz zip) |
| parent | f910381a55cdaa097030291f272f6e6e4380c39a | commitdiff |
ntp: Fix integer overflow when setting time
'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
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
'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
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| kernel/time/ntp.c | diffblobblamehistory |