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Peddolla Harshavardhan Reddy
d32c07ef18
[ Upstream commit6dccbc9f3e] When the nl80211 socket that originated a PMSR request is closed, cfg80211_release_pmsr() sets the request's nl_portid to zero and schedules pmsr_free_wk to process the abort asynchronously. If the interface is concurrently torn down before that work runs, cfg80211_pmsr_wdev_down() calls cfg80211_pmsr_process_abort() directly. However, the already- scheduled pmsr_free_wk work item remains pending and may run after the interface has been removed from the driver. This could cause the driver's abort_pmsr callback to operate on a torn-down interface, leading to undefined behavior and potential crashes. Cancel pmsr_free_wk synchronously in cfg80211_pmsr_wdev_down() before calling cfg80211_pmsr_process_abort(). This ensures any pending or in-progress work is drained before interface teardown proceeds, preventing the work from invoking the driver abort callback after the interface is gone. Fixes:9bb7e0f24e("cfg80211: add peer measurement with FTM initiator API") Signed-off-by: Peddolla Harshavardhan Reddy <peddolla.reddy@oss.qualcomm.com> Link: https://patch.msgid.link/20260305160712.1263829-3-peddolla.reddy@oss.qualcomm.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>