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authorVladimir Oltean <vladimir.oltean@nxp.com>2023-09-06 17:16:09 +0300
committerJakub Kicinski <kuba@kernel.org>2023-09-07 11:19:42 -0700
commit1b36955cc048c8ff6ba448dbf4be0e52f59f2963 (patch)
treec0a05d117fe6a4743c521e62dd9ba6d1f6a2d8b9
parent6afcf0fb92701487421aa73c692855aa70fbc796 (diff)
net: enetc: distinguish error from valid pointers in enetc_fixup_clear_rss_rfs()
enetc_psi_create() returns an ERR_PTR() or a valid station interface pointer, but checking for the non-NULL quality of the return code blurs that difference away. So if enetc_psi_create() fails, we call enetc_psi_destroy() when we shouldn't. This will likely result in crashes, since enetc_psi_create() cleans up everything after itself when it returns an ERR_PTR(). Fixes: f0168042a212 ("net: enetc: reimplement RFS/RSS memory clearing as PCI quirk") Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/netdev/582183ef-e03b-402b-8e2d-6d9bb3c83bd9@moroto.mountain/ Suggested-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20230906141609.247579-1-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r--drivers/net/ethernet/freescale/enetc/enetc_pf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index e0a4cb7e3f50..c153dc083aff 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -1402,7 +1402,7 @@ static void enetc_fixup_clear_rss_rfs(struct pci_dev *pdev)
return;
si = enetc_psi_create(pdev);
- if (si)
+ if (!IS_ERR(si))
enetc_psi_destroy(pdev);
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PF,