Clang static checker(scan-build) warning：
drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c:line 2184, column 2
Attempt to free released memory.

npc_mcam_rsrcs_deinit() has released 'mcam->counters.bmap'. Deleted this
redundant kfree() to fix this double free problem.

Fixes: dd7842878633 ("octeontx2-af: Add new devlink param to configure maximum usable NIX block LFs")
Signed-off-by: Su Hui <suhui@nfschina.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
index be709f83f331..e8b73b9d75e3 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
@@ -2181,7 +2181,6 @@ void rvu_npc_freemem(struct rvu *rvu)
 
 	kfree(pkind->rsrc.bmap);
 	npc_mcam_rsrcs_deinit(rvu);
-	kfree(mcam->counters.bmap);
 	if (rvu->kpu_prfl_addr)
 		iounmap(rvu->kpu_prfl_addr);
 	else
-- 
2.30.2

…
> npc_mcam_rsrcs_deinit() has released 'mcam->counters.bmap'. Deleted this
> redundant kfree() to fix this double free problem.
…

Can a wording variant (like the following) be a bit nicer?

   The object “mcam->counters.bmap” was released during the execution of
   the function “npc_mcam_rsrcs_deinit”.
   Delete a subsequent kfree() call to fix this double free problem.


Regards,
Markus

On Wed, Apr 24, 2024 at 7:58 AM Su Hui <suhui@nfschina.com> wrote:
>
> Clang static checker(scan-build) warning：
> drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c:line 2184, column 2
> Attempt to free released memory.
>
> npc_mcam_rsrcs_deinit() has released 'mcam->counters.bmap'. Deleted this
> redundant kfree() to fix this double free problem.
>
> Fixes: dd7842878633 ("octeontx2-af: Add new devlink param to configure maximum usable NIX block LFs")
> Signed-off-by: Su Hui <suhui@nfschina.com>

LGTM
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> ---
>  drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
> index be709f83f331..e8b73b9d75e3 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
> @@ -2181,7 +2181,6 @@ void rvu_npc_freemem(struct rvu *rvu)
>
>         kfree(pkind->rsrc.bmap);
>         npc_mcam_rsrcs_deinit(rvu);
> -       kfree(mcam->counters.bmap);
>         if (rvu->kpu_prfl_addr)
>                 iounmap(rvu->kpu_prfl_addr);
>         else
> --
> 2.30.2
>
>


-- 
Regards,
Kalesh A P