Commit 49121201 authored by Dan Carpenter's avatar Dan Carpenter Committed by Martin K. Petersen

mptfusion: don't allow negative bytes in kbuf_alloc_2_sgl()

There is a static checker warning here because "bytes" is controlled by
the user and we cap the upper bound with min() but allow negatives.
Negative bytes will result in some nasty warning messages but are not
super harmful.  Anyway, no one needs negative bytes so let's just check
for it and return NULL.
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 9c9bd593
...@@ -1038,6 +1038,10 @@ kbuf_alloc_2_sgl(int bytes, u32 sgdir, int sge_offset, int *frags, ...@@ -1038,6 +1038,10 @@ kbuf_alloc_2_sgl(int bytes, u32 sgdir, int sge_offset, int *frags,
int i, buflist_ent; int i, buflist_ent;
int sg_spill = MAX_FRAGS_SPILL1; int sg_spill = MAX_FRAGS_SPILL1;
int dir; int dir;
if (bytes < 0)
return NULL;
/* initialization */ /* initialization */
*frags = 0; *frags = 0;
*blp = NULL; *blp = NULL;
......
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