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examples/l3fwd: fix buffer overflow in Tx
[ upstream commit 0490d69 ] This patch fixes the stack buffer overflow error reported from AddressSanitizer. Function send_packetsx4() tries to access out of bound data from rte_mbuf and fill it into TX buffer even in the case where no pending packets (len = 0). Performance impact:- No ASAN error report:- ==819==ERROR: AddressSanitizer: stack-buffer-overflow on address 0xffffe2c0dcf0 at pc 0x0000005e791c bp 0xffffe2c0d7e0 sp 0xffffe2c0d800 READ of size 8 at 0xffffe2c0dcf0 thread T0 #0 0x5e7918 in send_packetsx4 ../examples/l3fwd/l3fwd_common.h:251 #1 0x5e7918 in send_packets_multi ../examples/l3fwd/l3fwd_neon.h:226 Fixes: 96ff445 ("examples/l3fwd: reorganise and optimize LPM code path") Signed-off-by: Rahul Bhansali <rbhansali@marvell.com> Reviewed-by: Conor Walsh <conor.walsh@intel.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
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