Commit 79293f49 authored Jun 26, 2019 by Jiunn Chang Committed by David S. Miller Jun 29, 2019

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 <c0d1n61at3@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent b60a7738

include/uapi/linux/if_packet.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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

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