| Message ID | 1631464489-8046-4-git-send-email-michael.chan@broadcom.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 985941e1dd5e996311c29688ca0d3aa1ff8eb0b6 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | bnxt_en: Bug fixes. | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 3 of 3 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 30 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 9f9806f1c0fc..f32431a7e5a6 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -2912,6 +2912,9 @@ static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) struct pci_dev *pdev = bp->pdev; int i; + if (!rmem->pg_arr) + goto skip_pages; + for (i = 0; i < rmem->nr_pages; i++) { if (!rmem->pg_arr[i]) continue; @@ -2921,6 +2924,7 @@ static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem) rmem->pg_arr[i] = NULL; } +skip_pages: if (rmem->pg_tbl) { size_t pg_tbl_size = rmem->nr_pages * 8; @@ -3240,10 +3244,14 @@ static int bnxt_alloc_tx_rings(struct bnxt *bp) static void bnxt_free_cp_arrays(struct bnxt_cp_ring_info *cpr) { + struct bnxt_ring_struct *ring = &cpr->cp_ring_struct; + kfree(cpr->cp_desc_ring); cpr->cp_desc_ring = NULL; + ring->ring_mem.pg_arr = NULL; kfree(cpr->cp_desc_mapping); cpr->cp_desc_mapping = NULL; + ring->ring_mem.dma_arr = NULL; } static int bnxt_alloc_cp_arrays(struct bnxt_cp_ring_info *cpr, int n)
We recently changed the completion ring page arrays to be dynamically allocated to better support the expanded range of ring depths. The cleanup path for this was not quite complete. It might cause the shutdown path to crash if we need to abort before the completion ring arrays have been allocated and initialized. Fix it by initializing the ring_mem->pg_arr to NULL after freeing the completion ring page array. Add a check in bnxt_free_ring() to skip referencing the rmem->pg_arr if it is NULL. Fixes: 03c7448790b8 ("bnxt_en: Don't use static arrays for completion ring pages") Reviewed-by: Andy Gospodarek <gospo@broadcom.com> Reviewed-by: Edwin Peer <edwin.peer@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 8 ++++++++ 1 file changed, 8 insertions(+)