Re: [dpdk-dev] [PATCH] app/testpmd: fix invalid memory access

[Sunil Kumar Kori <skori@marvell.com>]

Regards
Sunil Kumar Kori

>-----Original Message-----
>From: Li, Xiaoyun <xiaoyun.li@intel.com>
>Sent: Tuesday, October 12, 2021 1:21 PM
>To: Sunil Kumar Kori <skori@marvell.com>
>Cc: dev@dpdk.org; stable@dpdk.org; Dumitrescu, Cristian
><cristian.dumitrescu@intel.com>
>Subject: [EXT] RE: [PATCH] app/testpmd: fix invalid memory access
>
>External Email
>
>----------------------------------------------------------------------
>Hi
>
>> -----Original Message-----
>> From: skori@marvell.com <skori@marvell.com>
>> Sent: Tuesday, October 12, 2021 15:36
>> To: Li, Xiaoyun <xiaoyun.li@intel.com>
>> Cc: dev@dpdk.org; Sunil Kumar Kori <skori@marvell.com>;
>> stable@dpdk.org
>> Subject: [PATCH] app/testpmd: fix invalid memory access
>>
>> From: Sunil Kumar Kori <skori@marvell.com>
>>
>> During parsing of DSCP entries, memory is allocated and assgined to
>*dscp_table.
>> Later on, same memory is accessed using *dscp_table[i++].
>>
>> Due to higher precedence for array subscript, dscp_table[i++] will be
>> executed first which actually does not point to the same memory which
>> was allocated previously for DSCP table entries.
>>
>> Cc: stable@dpdk.org
>>
>> Fixes: e63b50162aa3 ("app/testpmd: clean metering and policing
>> commands")
>
>I think the fix should be for patch 459463ae6c26 ("app/testpmd: fix memory
>allocation for DSCP table") Also, added metering maintainer.
>
Ack. I will update and share v2.
>BRs
>Xiaoyun
>
>>
>> Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
>> ---
>>  app/test-pmd/cmdline_mtr.c | 6 +++---
>>  1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/app/test-pmd/cmdline_mtr.c b/app/test-pmd/cmdline_mtr.c
>> index
>> b5dcfdadcf..ad7ef6ad98 100644
>> --- a/app/test-pmd/cmdline_mtr.c
>> +++ b/app/test-pmd/cmdline_mtr.c
>> @@ -101,13 +101,13 @@ parse_dscp_table_entries(char *str, enum
>> rte_color
>> **dscp_table)
>>  	while (1) {
>>  		if (strcmp(token, "G") == 0 ||
>>  			strcmp(token, "g") == 0)
>> -			*dscp_table[i++] = RTE_COLOR_GREEN;
>> +			(*dscp_table)[i++] = RTE_COLOR_GREEN;
>>  		else if (strcmp(token, "Y") == 0 ||
>>  			strcmp(token, "y") == 0)
>> -			*dscp_table[i++] = RTE_COLOR_YELLOW;
>> +			(*dscp_table)[i++] = RTE_COLOR_YELLOW;
>>  		else if (strcmp(token, "R") == 0 ||
>>  			strcmp(token, "r") == 0)
>> -			*dscp_table[i++] = RTE_COLOR_RED;
>> +			(*dscp_table)[i++] = RTE_COLOR_RED;
>>  		else {
>>  			free(*dscp_table);
>>  			return -1;
>> --
>> 2.25.1