[PATCH net 0/2] net/stmmac: Secure against failures of DMA memory allocation

Jakub Raczynski j.raczynski at samsung.com
Tue Jul 7 10:41:13 PDT 2026


This series fixing two possible issues related to fails of
__alloc_dma_rx_desc_resources(). Original issue from 1st patch is related to
page_pool that has happened in testing env, while second was requested by
Sashiko to have similar change for DMA allocation. 
To have complete fix for all failures of __alloc_dma_rx_desc_resources(),
merge two fixes into series.

---
Note:
1st patch "Set Rx queue page_pool to NULL when freeing DMA resources" is
set to v2 while this series is v1. I know this is inconsistent, but this
series is not v2 and would be even more confusing.
Hopefully that doesn't break some CI, as second patch is v1.

Link to original:
https://lore.kernel.org/netdev/20260630100953.747868-1-j.raczynski@samsung.com/

Changes in v2 (in first patch):
- Added reviewed by Maxime
- Dropped null check as page_pool_destroy() does provide that
- Modified comment to reflect that

Jakub Raczynski (2):
  net/stmmac: Set Rx queue page_pool to NULL when freeing DMA resources
  net/stmmac: Prevent dma queue NULL free on allocation failure

 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 20 +++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

-- 
2.34.1




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