From 435f08a721919a0027ff4f39f0b51c141c0e2c29 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 9 Oct 2012 23:42:18 +0000 Subject: [PATCH] isdn: fix a wrapping bug in isdn_ppp_ioctl() "protos" is an array of unsigned longs and "i" is the number of bits in an unsigned long so we need to use 1UL as well to prevent the shift from wrapping around. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/isdn/i4l/isdn_ppp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c index a1e760150821..61d78fa03b1a 100644 --- a/drivers/isdn/i4l/isdn_ppp.c +++ b/drivers/isdn/i4l/isdn_ppp.c @@ -595,7 +595,7 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg) j = ipc->num / (sizeof(long) * 8); i = ipc->num % (sizeof(long) * 8); if (j < 8) - protos[j] |= (0x1 << i); + protos[j] |= (1UL << i); ipc = ipc->next; } if ((r = set_arg(argp, protos, 8 * sizeof(long)))) -- 2.30.2