6.5-stable review patch. If anyone has any objections, please let me know.
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From: Shannon Nelson shannon.nelson@amd.com
[ Upstream commit 91202ce78fcd070982a115f0bf6f328af619aa00 ]
Don't access structs that have been cleared when in the fw_down state and the various structs have been cleaned and are waiting to recover. This caused a panic on rmmod when already in fw_down and devlink_param_unregister() tried to check the parameters.
Fixes: 40ced8944536 ("pds_core: devlink params for enabling VIF support") Signed-off-by: Shannon Nelson shannon.nelson@amd.com Reviewed-by: Brett Creeley brett.creeley@amd.com Reviewed-by: Simon Horman horms@kernel.org Link: https://lore.kernel.org/r/20230824161754.34264-2-shannon.nelson@amd.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/amd/pds_core/devlink.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/amd/pds_core/devlink.c b/drivers/net/ethernet/amd/pds_core/devlink.c index 9c6b3653c1c7c..d9607033bbf21 100644 --- a/drivers/net/ethernet/amd/pds_core/devlink.c +++ b/drivers/net/ethernet/amd/pds_core/devlink.c @@ -10,6 +10,9 @@ pdsc_viftype *pdsc_dl_find_viftype_by_id(struct pdsc *pdsc, { int vt;
+ if (!pdsc->viftype_status) + return NULL; + for (vt = 0; vt < PDS_DEV_TYPE_MAX; vt++) { if (pdsc->viftype_status[vt].dl_id == dl_id) return &pdsc->viftype_status[vt];