Re: [RELEASE] Lguest for 2.6.21

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


Hi Rusty!

I found you forgot to check the return value of copy_from_user, and here is the fix for drivers/lguest/interrupts_and_traps.c.

Signed-off-by: WANG Cong <[email protected]>


--- linux-2.6.21-rc7-mm2/drivers/lguest/interrupts_and_traps.c.orig	2007-05-03 03:10:44.000000000 +0800
+++ linux-2.6.21-rc7-mm2/drivers/lguest/interrupts_and_traps.c	2007-05-03 03:11:42.000000000 +0800
@@ -75,7 +75,8 @@ void maybe_do_interrupt(struct lguest *l
 		set_bit(0, lg->irqs_pending);
 	/* Mask out any interrupts they have blocked. */
-	copy_from_user(&blk, lg->lguest_data->blocked_interrupts, sizeof(blk));
+	if (copy_from_user(&blk, lg->lguest_data->blocked_interrupts, sizeof(blk)))
+		return;
 	bitmap_andnot(blk, lg->irqs_pending, blk, LGUEST_IRQS);
 	irq = find_first_bit(blk, LGUEST_IRQS);
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at
Please read the FAQ at

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux