aboutsummaryrefslogtreecommitdiffstats
path: root/kernel/sysctl_check.c
diff options
context:
space:
mode:
authorMarcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>2011-02-02 16:04:02 -0200
committerJohn Stultz <john.stultz@linaro.org>2011-02-03 12:59:50 -0800
commit83a06bf50bdf2074b9404951ff60e142d159d93b (patch)
treeebb70cdc221d06529fd327e284f1b9191939f6aa /kernel/sysctl_check.c
parent9118626a30f8a3f58674623bebd3c34961e558af (diff)
downloadkernel_samsung_smdk4412-83a06bf50bdf2074b9404951ff60e142d159d93b.tar.gz
kernel_samsung_smdk4412-83a06bf50bdf2074b9404951ff60e142d159d93b.tar.bz2
kernel_samsung_smdk4412-83a06bf50bdf2074b9404951ff60e142d159d93b.zip
RTC: Prevents a division by zero in kernel code.
This patch prevents a user space program from calling the RTC_IRQP_SET ioctl with a negative value of frequency. Also, if this call is make with a zero value of frequency, there would be a division by zero in the kernel code. [jstultz: Also initialize irq_freq to 1 to catch other divbyzero issues] CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br> Signed-off-by: John Stultz <john.stultz@linaro.org>
Diffstat (limited to 'kernel/sysctl_check.c')
0 files changed, 0 insertions, 0 deletions