[PATCH AUTOSEL 5.4 017/350] ath10k: add cleanup in ath10k_sta_state()

[PATCH AUTOSEL 5.4 017/350] ath10k: add cleanup in ath10k_sta_state()

[Sasha Levin]

From: Wenwen Wang <wenwen@cs.uga.edu>

[ Upstream commit 334f5b61a6f29834e881923b98d1e27e5ce9620d ]

If 'sta->tdls' is false, no cleanup is executed, leading to memory/resource
leaks, e.g., 'arsta->tx_stats'. To fix this issue, perform cleanup before
go to the 'exit' label.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath10k/mac.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index a6d21856b7e7d..40889b79fc70d 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -6549,8 +6549,12 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
 
 		spin_unlock_bh(&ar->data_lock);
 
-		if (!sta->tdls)
+		if (!sta->tdls) {
+			ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
+			ath10k_mac_dec_num_stations(arvif, sta);
+			kfree(arsta->tx_stats);
 			goto exit;
+		}
 
 		ret = ath10k_wmi_update_fw_tdls_state(ar, arvif->vdev_id,
 						      WMI_TDLS_ENABLE_ACTIVE);
-- 
2.20.1


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[PATCH AUTOSEL 5.4 020/350] ath10k: Check if station exists before forwarding tx airtime report

[Sasha Levin]

From: Hauke Mehrtens <hauke@hauke-m.de>

[ Upstream commit b10f32672946ad638a430cc4289029b7acf8e979 ]

It looks like the FW on QCA9984 already reports the tx airtimes before
the station is added to the peer entry. The peer entry is created in
ath10k_peer_map_event() just with the vdev_id and the ethaddr, but
not with a station entry, this is added later in ath10k_peer_create() in
callbacks from mac80211.

When there is no sta added to the peer entry, this function fails
because it calls ieee80211_sta_register_airtime() with NULL.

This was reported in OpenWrt some time ago:
https://bugs.openwrt.org/index.php?do=details&task_id=2414

This commit should fix this crash:
[   75.991714] Unable to handle kernel paging request at virtual address fffff9e8
[   75.991756] pgd = c0204000
[   75.997955] [fffff9e8] *pgd=5fdfd861, *pte=00000000, *ppte=00000000
[   76.000537] Internal error: Oops: 37 [#1] SMP ARM
[   76.006686] Modules linked in: pppoe ppp_async ath10k_pci ath10k_core ath pptp pppox ppp_mppe ppp_generic mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_esp xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY usbserial slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack_netlink iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables crc_ccitt compat chaoskey fuse sch_cake sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32
[   76.059974]  cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6t_NPT ip6t_MASQUERADE nf_nat_masquerade_ipv6 nf_nat nf_conntrack nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 msdos ip_gre gre ifb sit tunnel4 ip_tunnel tun vfat fat hfsplus cifs nls_utf8 nls_iso8859_15 nls_iso8859_1 nls_cp850 nls_cp437 nls_cp1250 sha1_generic md5 md4
[   76.130634]  usb_storage leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_of_simple ohci_platform ohci_hcd phy_qcom_dwc3 ahci ehci_platform sd_mod ahci_platform libahci_platform libahci libata scsi_mod ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 exfat crc32c_generic
[   76.154772] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.132 #0
[   76.177001] Hardware name: Generic DT based system
[   76.182990] task: c0b06d80 task.stack: c0b00000
[   76.187832] PC is at ieee80211_sta_register_airtime+0x24/0x148 [mac80211]
[   76.192211] LR is at ath10k_htt_t2h_msg_handler+0x678/0x10f4 [ath10k_core]
[   76.199052] pc : [<bf75bfac>]    lr : [<bf83e8b0>]    psr: a0000113
[   76.205820] sp : c0b01d54  ip : 00000002  fp : bf869c0c
[   76.211981] r10: 0000003c  r9 : dbdca138  r8 : 00060002
[   76.217192] r7 : 00000000  r6 : dabe1150  r5 : 00000000  r4 : dbdc95c0
[   76.222401] r3 : 00000000  r2 : 00060002  r1 : 00000000  r0 : 00000000
[   76.229003] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[   76.235509] Control: 10c5787d  Table: 5c94006a  DAC: 00000051
[   76.242716] Process swapper/0 (pid: 0, stack limit = 0xc0b00210)
[   76.248446] Stack: (0xc0b01d54 to 0xc0b02000)
[   76.254532] 1d40:                                              dbdc95c0 00000000 dabe1150
[   76.258808] 1d60: 00000001 dabe1150 dbdca138 0000003c bf869c0c bf83e8b0 00000002 c0314b10
[   76.266969] 1d80: dbdc9c70 00000001 00000001 dabe114c 00010000 00000000 dbdcd724 bf88f3d8
[   76.275126] 1da0: c0310d28 db393c00 dbdc95c0 00000000 c0b01dd0 c07fb4c4 dbdcd724 00000001
[   76.283286] 1dc0: 00000022 bf88b09c db393c00 00000022 c0b01dd0 c0b01dd0 00000000 dbdcc5c0
[   76.291445] 1de0: bf88f04c dbdcd654 dbdcd71c dbdc95c0 00000014 dbdcd724 dbdcc5c0 00000005
[   76.299605] 1e00: 0004b400 bf85c360 00000000 bf87101c c0b01e24 00000006 00000000 dbdc95c0
[   76.307764] 1e20: 00000001 00000040 0000012c c0b01e80 1cf51000 bf85c448 dbdcd440 dbdc95c0
[   76.315925] 1e40: dbdca440 ffffa880 00000040 bf88cb68 dbdcd440 00000001 00000040 ffffa880
[   76.324084] 1e60: c0b02d00 c06d72e0 dd990080 c0a3f080 c0b255dc c0b047e4 c090afac c090e80c
[   76.332244] 1e80: c0b01e80 c0b01e80 c0b01e88 c0b01e88 dd4cc200 00000000 00000003 c0b0208c
[   76.340405] 1ea0: c0b02080 40000003 ffffe000 00000100 c0b02080 c03015c8 00000000 00000001
[   76.348564] 1ec0: dd408000 c0a38210 c0b2c7c0 0000000a ffffa880 c0b02d00 c07fb764 00200102
[   76.356723] 1ee0: dd4cc268 c0a3e414 00000000 00000000 00000001 dd408000 de803000 00000000
[   76.364883] 1f00: 00000000 c03247cc c0a3e414 c0368f1c c0b03f60 c0b153cc de80200c de802000
[   76.373042] 1f20: c0b01f48 c0301488 c0308630 60000013 ffffffff c0b01f7c 00000000 c0b00000
[   76.381204] 1f40: 00000000 c030c08c 00000001 00000000 00000000 c0315180 ffffe000 c0b03cc0
[   76.389363] 1f60: c0b03c70 00000000 00000000 c0a2da28 00000000 00000000 c0b01f90 c0b01f98
[   76.397522] 1f80: c030862c c0308630 60000013 ffffffff 00000051 00000000 ffffe000 c035dd18
[   76.405681] 1fa0: 000000bf c0b03c40 00000000 c0b2c000 dddfce80 c035e060 c0b2c040 c0a00cf4
[   76.413842] 1fc0: ffffffff ffffffff 00000000 c0a0067c c0a2da28 00000000 00000000 c0b2c1d4
[   76.422001] 1fe0: c0b03c5c c0a2da24 c0b07ee0 4220406a 512f04d0 4220807c 00000000 00000000
[   76.430335] [<bf75bfac>] (ieee80211_sta_register_airtime [mac80211]) from [<00000002>] (0x2)
[   76.438314] Code: e1cd81f0 e1a08002 e1cda1f8 e58de020 (e5102618)
[   76.446965] ---[ end trace 227a38ade964d642 ]---

Fixes: bb31b7cb106c ("ath10k: report tx airtime provided by fw")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath10k/htt_rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index 53f1095de8ffd..9f0e7b4943ec6 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -2726,7 +2726,7 @@ static void ath10k_htt_rx_tx_compl_ind(struct ath10k *ar,
 		spin_lock_bh(&ar->data_lock);
 
 		peer = ath10k_peer_find_by_id(ar, peer_id);
-		if (!peer) {
+		if (!peer || !peer->sta) {
 			spin_unlock_bh(&ar->data_lock);
 			rcu_read_unlock();
 			continue;
-- 
2.20.1


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[PATCH AUTOSEL 5.4 030/350] ath10k: fix backtrace on coredump

[Sasha Levin]

From: Anilkumar Kolli <akolli@codeaurora.org>

[ Upstream commit d98ddae85a4a57124f87960047b1b6419312147f ]

In a multiradio board with one QCA9984 and one AR9987
after enabling the crashdump with module parameter
coredump_mask=7, below backtrace is seen.

vmalloc: allocation failure: 0 bytes
 kworker/u4:0: page allocation failure: order:0, mode:0x80d2
 CPU: 0 PID: 6 Comm: kworker/u4:0 Not tainted 3.14.77 #130
 Workqueue: ath10k_wq ath10k_core_register_work [ath10k_core]
 (unwind_backtrace) from [<c021abf8>] (show_stack+0x10/0x14)
 (dump_stack+0x80/0xa0)
 (warn_alloc_failed+0xd0/0xfc)
 (__vmalloc_node_range+0x1b4/0x1d8)
 (__vmalloc_node+0x34/0x40)
 (vzalloc+0x24/0x30)
 (ath10k_coredump_register+0x6c/0x88 [ath10k_core])
 (ath10k_core_register_work+0x350/0xb34 [ath10k_core])
 (process_one_work+0x20c/0x32c)
 (worker_thread+0x228/0x360)

This is due to ath10k_hw_mem_layout is not defined for AR9987.
For coredump undefined hw ramdump_size is 0.
Check for the ramdump_size before allocation memory.

Tested on: AR9987, QCA9984
FW version: 10.4-3.9.0.2-00044

Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath10k/coredump.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/coredump.c b/drivers/net/wireless/ath/ath10k/coredump.c
index b6d2932383cf6..1cfe75a2d0c3a 100644
--- a/drivers/net/wireless/ath/ath10k/coredump.c
+++ b/drivers/net/wireless/ath/ath10k/coredump.c
@@ -1208,9 +1208,11 @@ static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar)
 		dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar);
 		dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_RAM_DATA);
 		dump_tlv->tlv_len = cpu_to_le32(crash_data->ramdump_buf_len);
-		memcpy(dump_tlv->tlv_data, crash_data->ramdump_buf,
-		       crash_data->ramdump_buf_len);
-		sofar += sizeof(*dump_tlv) + crash_data->ramdump_buf_len;
+		if (crash_data->ramdump_buf_len) {
+			memcpy(dump_tlv->tlv_data, crash_data->ramdump_buf,
+			       crash_data->ramdump_buf_len);
+			sofar += sizeof(*dump_tlv) + crash_data->ramdump_buf_len;
+		}
 	}
 
 	mutex_unlock(&ar->dump_mutex);
@@ -1257,6 +1259,9 @@ int ath10k_coredump_register(struct ath10k *ar)
 	if (test_bit(ATH10K_FW_CRASH_DUMP_RAM_DATA, &ath10k_coredump_mask)) {
 		crash_data->ramdump_buf_len = ath10k_coredump_get_ramdump_size(ar);
 
+		if (!crash_data->ramdump_buf_len)
+			return 0;
+
 		crash_data->ramdump_buf = vzalloc(crash_data->ramdump_buf_len);
 		if (!crash_data->ramdump_buf)
 			return -ENOMEM;
-- 
2.20.1


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