wifi: mt76: mt7915: unwind state on add_interface failure

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When mt76_wcid_alloc() fails, mt7915_add_interface() returned without
clearing the vif_mask/omac_mask bits it had already set, without removing
the firmware dev info added earlier, and without clearing a monitor_vif
pointer to the vif mac80211 is about to free. mac80211 does not call
remove_interface() for a failed add, so the indices and firmware dev
entry leaked permanently and testmode could dereference the stale
monitor_vif. Add a proper error unwind.

Fixes: b619e01380 ("mt76: fix MBSS index condition in DBDC mode")
Link: https://patch.msgid.link/20260724124813.3961474-4-nbd@nbd.name
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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Felix Fietkau 2026-07-24 12:47:48 +00:00

parent 6689b4a65e

commit 2fb6480c52

1 changed files with 11 additions and 1 deletions

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12

drivers/net/wireless/mediatek/mt76/mt7915/main.c

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