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(parent: cb14426) | patch
cfg80211: fix rcu in cfg80211_unregister_wdev
authorDedy Lansky <dlansky@codeaurora.org>
Fri, 15 Jun 2018 11:05:01 +0000 (13:05 +0200)
committerJohannes Berg <johannes@sipsolutions.net>
Fri, 15 Jun 2018 11:05:14 +0000 (13:05 +0200)
commit24ab1202cb9d9883e9ec4b0693b40d9125bc8fff
tree91aea74e94706907adfdf0c8be7daca9c6f86259tree | snapshot
parentcb144267bf286674e93b5711f1a6f17ea5cbfa32commit | diff
cfg80211: fix rcu in cfg80211_unregister_wdev

Callers of cfg80211_unregister_wdev can free the wdev object
immediately after this function returns. This may crash the kernel
because this wdev object is still in use by other threads.
Add synchronize_rcu() after list_del_rcu to make sure wdev object can
be safely freed.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
net/wireless/core.c diff | blob | history
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