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bnxt_en: Return error when allocating zero size context memory.

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[ Upstream commit bbf211b1ecb891c7e0cc7888834504183fc8b534 ]

bnxt_alloc_ctx_pg_tbls() should return error when the memory size of the
context memory to set up is zero.  By returning success (0), the caller
may proceed normally and may crash later when it tries to set up the
memory.

Fixes: 08fe9d1816 ("bnxt_en: Add Level 2 context memory paging support.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Chan 2020-04-26 16:24:41 -04:00 • committed by Greg Kroah-Hartman
commit cf07e0ccff
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -6649,7 +6649,7 @@ static int bnxt_alloc_ctx_pg_tbls(struct bnxt *bp,
int rc;
if (!mem_size)
return 0;
return -EINVAL;
ctx_pg->nr_pages = DIV_ROUND_UP(mem_size, BNXT_PAGE_SIZE);
if (ctx_pg->nr_pages > MAX_CTX_TOTAL_PAGES) {