3.8.13.16 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Konstantin Khlebnikov <k.khlebnikov@xxxxxxxxxxx> commit 3abb6671a9c04479c4bd026798a05f857393b7e2 upstream. This patch fixes corner case when (fp + 4) overflows unsigned long, for example: fp = 0xFFFFFFFF -> fp + 4 == 3. Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@xxxxxxxxxxx> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx> --- arch/arm/kernel/stacktrace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c index 00f79e5..af4e8c8 100644 --- a/arch/arm/kernel/stacktrace.c +++ b/arch/arm/kernel/stacktrace.c @@ -31,7 +31,7 @@ int notrace unwind_frame(struct stackframe *frame) high = ALIGN(low, THREAD_SIZE); /* check current frame pointer is within bounds */ - if (fp < (low + 12) || fp + 4 >= high) + if (fp < low + 12 || fp > high - 4) return -EINVAL; /* restore the registers from the stack frame */ -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html