diff options
Diffstat (limited to 'package/kernel/mac80211/patches/380-0004-ath10k-Fix-kernel-panic-while-using-worker-ath10k_st.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/380-0004-ath10k-Fix-kernel-panic-while-using-worker-ath10k_st.patch | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/package/kernel/mac80211/patches/380-0004-ath10k-Fix-kernel-panic-while-using-worker-ath10k_st.patch b/package/kernel/mac80211/patches/380-0004-ath10k-Fix-kernel-panic-while-using-worker-ath10k_st.patch deleted file mode 100644 index 888cedd8d3..0000000000 --- a/package/kernel/mac80211/patches/380-0004-ath10k-Fix-kernel-panic-while-using-worker-ath10k_st.patch +++ /dev/null @@ -1,99 +0,0 @@ -From 8b2d93dd22615cb7f3046a5a2083a6f8bb8052ed Mon Sep 17 00:00:00 2001 -From: Karthikeyan Periyasamy <periyasa@codeaurora.org> -Date: Mon, 12 Mar 2018 17:09:40 +0530 -Subject: [PATCH] ath10k: Fix kernel panic while using worker - (ath10k_sta_rc_update_wk) - -When attempt to run worker (ath10k_sta_rc_update_wk) after the station object -(ieee80211_sta) delete will trigger the kernel panic. - -This problem arise in AP + Mesh configuration, Where the current node AP VAP -and neighbor node mesh VAP MAC address are same. When the current mesh node -try to establish the mesh link with neighbor node, driver peer creation for -the neighbor mesh node fails due to duplication MAC address. Already the AP -VAP created with same MAC address. - -It is caused by the following scenario steps. - -Steps: -1. In above condition, ath10k driver sta_state callback (ath10k_sta_state) - fails to do the state change for a station from IEEE80211_STA_NOTEXIST - to IEEE80211_STA_NONE due to peer creation fails. Sta_state callback is - called from ieee80211_add_station() to handle the new station - (neighbor mesh node) request from the wpa_supplicant. -2. Concurrently ath10k receive the sta_rc_update callback notification from - the mesh_neighbour_update() to handle the beacon frames of the above - neighbor mesh node. since its atomic callback, ath10k driver queue the - work (ath10k_sta_rc_update_wk) to handle rc update. -3. Due to driver sta_state callback fails (step 1), mac80211 free the station - object. -4. When the worker (ath10k_sta_rc_update_wk) scheduled to run, it will access - the station object which is already deleted. so it will trigger kernel - panic. - -Added the peer exist check in sta_rc_update callback before queue the work. - -Kernel Panic log: - -Unable to handle kernel NULL pointer dereference at virtual address 00000000 -pgd = c0204000 -[00000000] *pgd=00000000 -Internal error: Oops: 17 [#1] PREEMPT SMP ARM -CPU: 1 PID: 1833 Comm: kworker/u4:2 Not tainted 3.14.77 #1 -task: dcef0000 ti: d72b6000 task.ti: d72b6000 -PC is at pwq_activate_delayed_work+0x10/0x40 -LR is at pwq_activate_delayed_work+0xc/0x40 -pc : [<c023f988>] lr : [<c023f984>] psr: 40000193 -sp : d72b7f18 ip : 0000007a fp : d72b6000 -r10: 00000000 r9 : dd404414 r8 : d8c31998 -r7 : d72b6038 r6 : 00000004 r5 : d4907ec8 r4 : dcee1300 -r3 : ffffffe0 r2 : 00000000 r1 : 00000001 r0 : 00000000 -Flags: nZcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel -Control: 10c5787d Table: 595bc06a DAC: 00000015 -... -Process kworker/u4:2 (pid: 1833, stack limit = 0xd72b6238) -Stack: (0xd72b7f18 to 0xd72b8000) -7f00: 00000001 dcee1300 -7f20: 00000001 c02410dc d8c31980 dd404400 dd404400 c0242790 d8c31980 00000089 -7f40: 00000000 d93e1340 00000000 d8c31980 c0242568 00000000 00000000 00000000 -7f60: 00000000 c02474dc 00000000 00000000 000000f8 d8c31980 00000000 00000000 -7f80: d72b7f80 d72b7f80 00000000 00000000 d72b7f90 d72b7f90 d72b7fac d93e1340 -7fa0: c0247404 00000000 00000000 c0208d20 00000000 00000000 00000000 00000000 -7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 -7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 -[<c023f988>] (pwq_activate_delayed_work) from [<c02410dc>] (pwq_dec_nr_in_flight+0x58/0xc4) -[<c02410dc>] (pwq_dec_nr_in_flight) from [<c0242790>] (worker_thread+0x228/0x360) -[<c0242790>] (worker_thread) from [<c02474dc>] (kthread+0xd8/0xec) -[<c02474dc>] (kthread) from [<c0208d20>] (ret_from_fork+0x14/0x34) -Code: e92d4038 e1a05000 ebffffbc[69210.619376] SMP: failed to stop secondary CPUs -Rebooting in 3 seconds.. - -Signed-off-by: Karthikeyan Periyasamy <periyasa@codeaurora.org> -Signed-off-by: Kalle Valo <kvalo@codeaurora.org> ---- - drivers/net/wireless/ath/ath10k/mac.c | 10 ++++++++++ - 1 file changed, 10 insertions(+) - ---- a/drivers/net/wireless/ath/ath10k/mac.c -+++ b/drivers/net/wireless/ath/ath10k/mac.c -@@ -7065,10 +7065,20 @@ static void ath10k_sta_rc_update(struct - { - struct ath10k *ar = hw->priv; - struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv; -+ struct ath10k_vif *arvif = (void *)vif->drv_priv; -+ struct ath10k_peer *peer; - u32 bw, smps; - - spin_lock_bh(&ar->data_lock); - -+ peer = ath10k_peer_find(ar, arvif->vdev_id, sta->addr); -+ if (!peer) { -+ spin_unlock_bh(&ar->data_lock); -+ ath10k_warn(ar, "mac sta rc update failed to find peer %pM on vdev %i\n", -+ sta->addr, arvif->vdev_id); -+ return; -+ } -+ - ath10k_dbg(ar, ATH10K_DBG_MAC, - "mac sta rc update for %pM changed %08x bw %d nss %d smps %d\n", - sta->addr, changed, sta->bandwidth, sta->rx_nss, |