On some combination of plink_timeout and HZ, the STA expiration timer will be
unexpectedly truncated to u32. Maybe there is a question "Who sets such a large
number to plink_timeout ?". At least wpa_supplicant will set 0xffffffff to
plink_timeout to disable this timer because wpa_supplicant has it's own
expiration mechanism.
Signed-off-by: Masashi Honma <masashi.honma@xxxxxxxxx>
---
net/mac80211/mesh.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 0c8b2a7..3c40894 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -573,8 +573,11 @@ static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
u32 changed;
+ u64 exp_time;
- ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ);
+ exp_time = ifmsh->mshcfg.plink_timeout * (u64)HZ;
+ if (exp_time < 0x100000000)
+ ieee80211_sta_expire(sdata, exp_time);
mesh_path_expire(sdata);
changed = mesh_accept_plinks_update(sdata);
--
2.1.0
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