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| author | Johannes Berg <johannes.berg@intel.com> | 2017-03-15 16:26:04 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2017-03-16 12:30:03 +0300 |
| commit | ea90e0dc8cecba6359b481e24d9c37160f6f524f (patch) | |
| tree | a02edfb1df611c5d5870150c4651c69ef1047375 /net/batman-adv/bat_iv_ogm.c | |
| parent | 22a0e18eac7a9e986fec76c60fa4a2926d1291e2 (diff) | |
| download | linux-ea90e0dc8cecba6359b481e24d9c37160f6f524f.tar.xz | |
nl80211: fix dumpit error path RTNL deadlocks
Sowmini pointed out Dmitry's RTNL deadlock report to me, and it turns out
to be perfectly accurate - there are various error paths that miss unlock
of the RTNL.
To fix those, change the locking a bit to not be conditional in all those
nl80211_prepare_*_dump() functions, but make those require the RTNL to
start with, and fix the buggy error paths. This also let me use sparse
(by appropriately overriding the rtnl_lock/rtnl_unlock functions) to
validate the changes.
Cc: stable@vger.kernel.org
Reported-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/batman-adv/bat_iv_ogm.c')
0 files changed, 0 insertions, 0 deletions