diff options
author | Remi Pommarel <repk@triplefau.lt> | 2020-07-04 16:50:07 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-05 11:06:51 +0300 |
commit | 86e7d4cd2ed5f4b0188afce8199faffcf1ae7c7e (patch) | |
tree | 8774fdaa2abb5a43e9deb90e12c62aec18b31222 /net/mac80211 | |
parent | e1aa01195b82a5a8354c9b87746097866f3693de (diff) | |
download | linux-86e7d4cd2ed5f4b0188afce8199faffcf1ae7c7e.tar.xz |
mac80211: mesh: Free ie data when leaving mesh
[ Upstream commit 6a01afcf8468d3ca2bd8bbb27503f60dcf643b20 ]
At ieee80211_join_mesh() some ie data could have been allocated (see
copy_mesh_setup()) and need to be cleaned up when leaving the mesh.
This fixes the following kmemleak report:
unreferenced object 0xffff0000116bc600 (size 128):
comm "wpa_supplicant", pid 608, jiffies 4294898983 (age 293.484s)
hex dump (first 32 bytes):
30 14 01 00 00 0f ac 04 01 00 00 0f ac 04 01 00 0...............
00 0f ac 08 00 00 00 00 c4 65 40 00 00 00 00 00 .........e@.....
backtrace:
[<00000000bebe439d>] __kmalloc_track_caller+0x1c0/0x330
[<00000000a349dbe1>] kmemdup+0x28/0x50
[<0000000075d69baa>] ieee80211_join_mesh+0x6c/0x3b8 [mac80211]
[<00000000683bb98b>] __cfg80211_join_mesh+0x1e8/0x4f0 [cfg80211]
[<0000000072cb507f>] nl80211_join_mesh+0x520/0x6b8 [cfg80211]
[<0000000077e9bcf9>] genl_family_rcv_msg+0x374/0x680
[<00000000b1bd936d>] genl_rcv_msg+0x78/0x108
[<0000000022c53788>] netlink_rcv_skb+0xb0/0x1c0
[<0000000011af8ec9>] genl_rcv+0x34/0x48
[<0000000069e41f53>] netlink_unicast+0x268/0x2e8
[<00000000a7517316>] netlink_sendmsg+0x320/0x4c0
[<0000000069cba205>] ____sys_sendmsg+0x354/0x3a0
[<00000000e06bab0f>] ___sys_sendmsg+0xd8/0x120
[<0000000037340728>] __sys_sendmsg+0xa4/0xf8
[<000000004fed9776>] __arm64_sys_sendmsg+0x44/0x58
[<000000001c1e5647>] el0_svc_handler+0xd0/0x1a0
Fixes: c80d545da3f7 (mac80211: Let userspace enable and configure vendor specific path selection.)
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Link: https://lore.kernel.org/r/20200704135007.27292-1-repk@triplefau.lt
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/mac80211')
-rw-r--r-- | net/mac80211/cfg.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index b1484b8316e8..c883cb67b731 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1997,6 +1997,7 @@ static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) ieee80211_stop_mesh(sdata); mutex_lock(&sdata->local->mtx); ieee80211_vif_release_channel(sdata); + kfree(sdata->u.mesh.ie); mutex_unlock(&sdata->local->mtx); return 0; |