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35 lines
938 B
Diff
35 lines
938 B
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Tue, 12 Feb 2019 14:22:43 +0100
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Subject: [PATCH v2] wpa_supplicant: fix race condition in mesh mpm new peer
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handling
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When wpa_supplicant receives another new peer event before the first one
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has been processed, it tries to add a station to the driver a second time
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(which fails) and then tears down the station entry until another event
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comes in.
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Fix this by only adding a station to the driver if it didn't exist already.
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/wpa_supplicant/mesh_mpm.c
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+++ b/wpa_supplicant/mesh_mpm.c
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@@ -710,11 +710,12 @@ static struct sta_info * mesh_mpm_add_pe
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}
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sta = ap_get_sta(data, addr);
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- if (!sta) {
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- sta = ap_sta_add(data, addr);
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- if (!sta)
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- return NULL;
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- }
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+ if (sta)
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+ return NULL;
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+
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+ sta = ap_sta_add(data, addr);
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+ if (!sta)
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+ return NULL;
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/* Set WMM by default since Mesh STAs are QoS STAs */
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sta->flags |= WLAN_STA_WMM;
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