From b92b47fcfdd3623ad71fadfc2ae6a71833f559ba Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 19 Mar 2019 23:23:19 +0800 Subject: [PATCH] net: dev: Use unsigned integer as an argument to left-shift mainline inclusion from mainline-5.0 commit f4d7b3e23d259c44f1f1c39645450680fcd935d6 category: bugfix bugzilla: 11090 CVE: NA ------------------------------------------------- 1 << 31 is Undefined Behaviour according to the C standard. Use U type modifier to avoid theoretical overflow. Signed-off-by: Andy Shevchenko Signed-off-by: David S. Miller (cherry picked from commit f4d7b3e23d259c44f1f1c39645450680fcd935d6) Signed-off-by: Zhen Lei Reviewed-by: Yang Yingliang Signed-off-by: Yang Yingliang --- include/linux/netdevice.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 21fef8c5eca7..8cbdea4708f6 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3787,7 +3787,7 @@ static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits) if (debug_value == 0) /* no output */ return 0; /* set low N bits */ - return (1 << debug_value) - 1; + return (1U << debug_value) - 1; } static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu) -- GitLab