6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Elena Salomatkina <elena.salomatkina.cmc@xxxxxxxxx>
[ Upstream commit ad31c629ca3c87f6d557488c1f9faaebfbcd203c ]
A loop in rvu_mbox_handler_nix_bandprof_free() contains
a break if (idx == MAX_BANDPROF_PER_PFFUNC),
but if idx may reach MAX_BANDPROF_PER_PFFUNC
buffer '(*req->prof_idx)[layer]' overflow happens before that check.
The patch moves the break to the
beginning of the loop.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: e8e095b3b370 ("octeontx2-af: cn10k: Bandwidth profiles config support").
Signed-off-by: Elena Salomatkina <elena.salomatkina.cmc@xxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Reviewed-by: Subbaraya Sundeep <sbhatta@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20231124210802.109763-1-elena.salomatkina.cmc@xxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 1f3a8cf42765e..7310047136986 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -5236,6 +5236,8 @@ int rvu_mbox_handler_nix_bandprof_free(struct rvu *rvu,
ipolicer = &nix_hw->ipolicer[layer];
for (idx = 0; idx < req->prof_count[layer]; idx++) {
+ if (idx == MAX_BANDPROF_PER_PFFUNC)
+ break;
prof_idx = req->prof_idx[layer][idx];
if (prof_idx >= ipolicer->band_prof.max ||
ipolicer->pfvf_map[prof_idx] != pcifunc)
@@ -5249,8 +5251,6 @@ int rvu_mbox_handler_nix_bandprof_free(struct rvu *rvu,
ipolicer->pfvf_map[prof_idx] = 0x00;
ipolicer->match_id[prof_idx] = 0;
rvu_free_rsrc(&ipolicer->band_prof, prof_idx);
- if (idx == MAX_BANDPROF_PER_PFFUNC)
- break;
}
}
mutex_unlock(&rvu->rsrc_lock);
--
2.42.0
