wifi: mt76: mt792x: Fix memory leak in SDIO TX path

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When tx_prepare_skb() returns an error in the SDIO TX path, the
skb is not freed, leading to a memory leak. This can occur when
zero-length frames (such as WNM NULL frames) are dropped to prevent
potential hardware TX hangs.

Fix this by properly releasing the skb with ieee80211_tx_status_ext()
when tx_prepare_skb() fails.

Fixes: b747fa3438 ("mt76: mt7915: drop zero-length packet to avoid Tx hang")
Signed-off-by: Eason Lai <Eason.Lai@mediatek.com>
Link: https://patch.msgid.link/20260703005945.2244533-1-eason.lai@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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Eason Lai 2026-07-03 08:59:45 +08:00 • committed by Felix Fietkau

parent 9ddb7487aa

commit 808f2767d4

1 changed files with 10 additions and 1 deletions

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drivers/net/wireless/mediatek/mt76/sdio.c

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