From: Jiunn Chang Date: Thu, 27 Jun 2019 03:25:30 +0000 (-0500) Subject: packet: Fix undefined behavior in bit shift X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=79293f49677e2e703ef0d0efc9919319adacb3fb;p=openwrt%2Fstaging%2Fblogic.git packet: Fix undefined behavior in bit shift Shifting signed 32-bit value by 31 bits is undefined. Changing most significant bit to unsigned. Changes included in v2: - use subsystem specific subject lines - CC required mailing lists Signed-off-by: Jiunn Chang Signed-off-by: David S. Miller --- diff --git a/include/uapi/linux/if_packet.h b/include/uapi/linux/if_packet.h index 467b654bd4c7..3d884d68eb30 100644 --- a/include/uapi/linux/if_packet.h +++ b/include/uapi/linux/if_packet.h @@ -123,7 +123,7 @@ struct tpacket_auxdata { /* Rx and Tx ring - header status */ #define TP_STATUS_TS_SOFTWARE (1 << 29) #define TP_STATUS_TS_SYS_HARDWARE (1 << 30) /* deprecated, never set */ -#define TP_STATUS_TS_RAW_HARDWARE (1 << 31) +#define TP_STATUS_TS_RAW_HARDWARE (1U << 31) /* Rx ring - feature request bits */ #define TP_FT_REQ_FILL_RXHASH 0x1