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i40iw: Avoid writing to freed memory 

iwpbl->iwmr points to the structure that contains iwpbl,
which is iwmr. Setting this to NULL would result in
writing to freed memory. So just free iwmr, and return.

Fixes: d374984179 ("i40iw: add files for iwarp interface")

Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mustafa Ismail 2016-08-23 17:24:56 -05:00 committed by Doug Ledford
parent d41d0910d9
commit 433c58139f
1 changed files with 1 additions and 2 deletions
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3
drivers/infiniband/hw/i40iw/i40iw_verbs.c
View File

@ -1925,8 +1925,7 @@ static int i40iw_dereg_mr(struct ib_mr *ib_mr)
}
if (iwpbl->pbl_allocated)
i40iw_free_pble(iwdev->pble_rsrc, palloc);
kfree(iwpbl->iwmr);
iwpbl->iwmr = NULL;
kfree(iwmr);
return 0;
}