[Intel-wired-lan] [[PATCH v2 iwl-next] v2 2/4] idpf: Acquire the lock before accessing the xn->salt
Manoj Vishwanathan
manojvishy at google.com
Mon Aug 26 18:10:30 UTC 2024
The transaction salt was being accessed before acquiring the
idpf_vc_xn_lock when idpf has to forward the virtchnl reply.
Fixes: 34c21fa894a1a (“idpf: implement virtchnl transaction manager”)
Signed-off-by: Manoj Vishwanathan <manojvishy at google.com>
---
drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
index 70986e12da28..30eec674d594 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c
@@ -612,14 +612,15 @@ idpf_vc_xn_forward_reply(struct idpf_adapter *adapter,
return -EINVAL;
}
xn = &adapter->vcxn_mngr->ring[xn_idx];
+ idpf_vc_xn_lock(xn);
salt = FIELD_GET(IDPF_VC_XN_SALT_M, msg_info);
if (xn->salt != salt) {
dev_err_ratelimited(&adapter->pdev->dev, "Transaction salt does not match (%02x != %02x)\n",
xn->salt, salt);
+ idpf_vc_xn_unlock(xn);
return -EINVAL;
}
- idpf_vc_xn_lock(xn);
switch (xn->state) {
case IDPF_VC_XN_WAITING:
/* success */
--
2.46.0.295.g3b9ea8a38a-goog
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