linux-stable.git/drivers/net/wireless, branch v4.14.313

wifi: rtl8xxxu: Use a longer retry limit of 48

2023-03-11T15:26:47+00:00

commit 2a86aa9a1892d60ef2e3f310f5b42b8b05546d65 upstream.

The Realtek rate control algorithm goes back and forth a lot between
the highest and the lowest rate it's allowed to use. This is due to
a lot of frames being dropped because the retry limits set by
IEEE80211_CONF_CHANGE_RETRY_LIMITS are too low. (Experimentally, they
are 4 for long frames and 7 for short frames.)

The vendor drivers hardcode the value 48 for both retry limits (for
station mode), which makes dropped frames very rare and thus the rate
control is more stable.

Because most Realtek chips handle the rate control in the firmware,
which can't be modified, ignore the limits set by
IEEE80211_CONF_CHANGE_RETRY_LIMITS and use the value 48 (set during
chip initialisation), same as the vendor drivers.

Cc: stable@vger.kernel.org
Signed-off-by: Bitterblue Smith 
Reviewed-by: Ping-Ke Shih 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/477d745b-6bac-111d-403c-487fc19aa30d@gmail.com
Signed-off-by: Greg Kroah-Hartman

wifi: rtl8xxxu: fixing transmisison failure for rtl8192eu

2023-03-11T15:26:43+00:00

commit c6015bf3ff1ffb3caa27eb913797438a0fc634a0 upstream.

Fixing transmission failure which results in
"authentication with ... timed out". This can be
fixed by disable the REG_TXPAUSE.

Signed-off-by: Jun ASAKA 
Reviewed-by: Ping-Ke Shih 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20221217030659.12577-1-JunASAKA@zzy040330.moe
Signed-off-by: Greg Kroah-Hartman

wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds()

2023-03-11T15:26:41+00:00

[ Upstream commit 0a06cadcc2a0044e4a117cc0e61436fc3a0dad69 ]

This patch fixes a stack-out-of-bounds read in brcmfmac that occurs
when 'buf' that is not null-terminated is passed as an argument of
strsep() in brcmf_c_preinit_dcmds(). This buffer is filled with a firmware
version string by memcpy() in brcmf_fil_iovar_data_get().
The patch ensures buf is null-terminated.

Found by a modified version of syzkaller.

[   47.569679][ T1897] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43236b for chip BCM43236/3
[   47.582839][ T1897] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available
[   47.601565][ T1897] ==================================================================
[   47.602574][ T1897] BUG: KASAN: stack-out-of-bounds in strsep+0x1b2/0x1f0
[   47.603447][ T1897] Read of size 1 at addr ffffc90001f6f000 by task kworker/0:2/1897
[   47.604336][ T1897]
[   47.604621][ T1897] CPU: 0 PID: 1897 Comm: kworker/0:2 Tainted: G           O      5.14.0+ #131
[   47.605617][ T1897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
[   47.606907][ T1897] Workqueue: usb_hub_wq hub_event
[   47.607453][ T1897] Call Trace:
[   47.607801][ T1897]  dump_stack_lvl+0x8e/0xd1
[   47.608295][ T1897]  print_address_description.constprop.0.cold+0xf/0x334
[   47.609009][ T1897]  ? strsep+0x1b2/0x1f0
[   47.609434][ T1897]  ? strsep+0x1b2/0x1f0
[   47.609863][ T1897]  kasan_report.cold+0x83/0xdf
[   47.610366][ T1897]  ? strsep+0x1b2/0x1f0
[   47.610882][ T1897]  strsep+0x1b2/0x1f0
[   47.611300][ T1897]  ? brcmf_fil_iovar_data_get+0x3a/0xf0
[   47.611883][ T1897]  brcmf_c_preinit_dcmds+0x995/0xc40
[   47.612434][ T1897]  ? brcmf_c_set_joinpref_default+0x100/0x100
[   47.613078][ T1897]  ? rcu_read_lock_sched_held+0xa1/0xd0
[   47.613662][ T1897]  ? rcu_read_lock_bh_held+0xb0/0xb0
[   47.614208][ T1897]  ? lock_acquire+0x19d/0x4e0
[   47.614704][ T1897]  ? find_held_lock+0x2d/0x110
[   47.615236][ T1897]  ? brcmf_usb_deq+0x1a7/0x260
[   47.615741][ T1897]  ? brcmf_usb_rx_fill_all+0x5a/0xf0
[   47.616288][ T1897]  brcmf_attach+0x246/0xd40
[   47.616758][ T1897]  ? wiphy_new_nm+0x1703/0x1dd0
[   47.617280][ T1897]  ? kmemdup+0x43/0x50
[   47.617720][ T1897]  brcmf_usb_probe+0x12de/0x1690
[   47.618244][ T1897]  ? brcmf_usbdev_qinit.constprop.0+0x470/0x470
[   47.618901][ T1897]  usb_probe_interface+0x2aa/0x760
[   47.619429][ T1897]  ? usb_probe_device+0x250/0x250
[   47.619950][ T1897]  really_probe+0x205/0xb70
[   47.620435][ T1897]  ? driver_allows_async_probing+0x130/0x130
[   47.621048][ T1897]  __driver_probe_device+0x311/0x4b0
[   47.621595][ T1897]  ? driver_allows_async_probing+0x130/0x130
[   47.622209][ T1897]  driver_probe_device+0x4e/0x150
[   47.622739][ T1897]  __device_attach_driver+0x1cc/0x2a0
[   47.623287][ T1897]  bus_for_each_drv+0x156/0x1d0
[   47.623796][ T1897]  ? bus_rescan_devices+0x30/0x30
[   47.624309][ T1897]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0
[   47.624907][ T1897]  ? trace_hardirqs_on+0x46/0x160
[   47.625437][ T1897]  __device_attach+0x23f/0x3a0
[   47.625924][ T1897]  ? device_bind_driver+0xd0/0xd0
[   47.626433][ T1897]  ? kobject_uevent_env+0x287/0x14b0
[   47.627057][ T1897]  bus_probe_device+0x1da/0x290
[   47.627557][ T1897]  device_add+0xb7b/0x1eb0
[   47.628027][ T1897]  ? wait_for_completion+0x290/0x290
[   47.628593][ T1897]  ? __fw_devlink_link_to_suppliers+0x5a0/0x5a0
[   47.629249][ T1897]  usb_set_configuration+0xf59/0x16f0
[   47.629829][ T1897]  usb_generic_driver_probe+0x82/0xa0
[   47.630385][ T1897]  usb_probe_device+0xbb/0x250
[   47.630927][ T1897]  ? usb_suspend+0x590/0x590
[   47.631397][ T1897]  really_probe+0x205/0xb70
[   47.631855][ T1897]  ? driver_allows_async_probing+0x130/0x130
[   47.632469][ T1897]  __driver_probe_device+0x311/0x4b0
[   47.633002][ T1897]  ? usb_generic_driver_match+0x75/0x90
[   47.633573][ T1897]  ? driver_allows_async_probing+0x130/0x130
[   47.634170][ T1897]  driver_probe_device+0x4e/0x150
[   47.634703][ T1897]  __device_attach_driver+0x1cc/0x2a0
[   47.635248][ T1897]  bus_for_each_drv+0x156/0x1d0
[   47.635748][ T1897]  ? bus_rescan_devices+0x30/0x30
[   47.636271][ T1897]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0
[   47.636881][ T1897]  ? trace_hardirqs_on+0x46/0x160
[   47.637396][ T1897]  __device_attach+0x23f/0x3a0
[   47.637904][ T1897]  ? device_bind_driver+0xd0/0xd0
[   47.638426][ T1897]  ? kobject_uevent_env+0x287/0x14b0
[   47.638985][ T1897]  bus_probe_device+0x1da/0x290
[   47.639512][ T1897]  device_add+0xb7b/0x1eb0
[   47.639977][ T1897]  ? __fw_devlink_link_to_suppliers+0x5a0/0x5a0
[   47.640612][ T1897]  ? kfree+0x14a/0x6b0
[   47.641055][ T1897]  ? __usb_get_extra_descriptor+0x116/0x160
[   47.641679][ T1897]  usb_new_device.cold+0x49c/0x1029
[   47.642245][ T1897]  ? hub_disconnect+0x450/0x450
[   47.642756][ T1897]  ? rwlock_bug.part.0+0x90/0x90
[   47.643273][ T1897]  ? _raw_spin_unlock_irq+0x24/0x30
[   47.643822][ T1897]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0
[   47.644445][ T1897]  hub_event+0x1c98/0x3950
[   47.644939][ T1897]  ? hub_port_debounce+0x2e0/0x2e0
[   47.645467][ T1897]  ? check_irq_usage+0x861/0xf20
[   47.645975][ T1897]  ? drain_workqueue+0x280/0x360
[   47.646506][ T1897]  ? lock_release+0x640/0x640
[   47.646994][ T1897]  ? rcu_read_lock_sched_held+0xa1/0xd0
[   47.647572][ T1897]  ? rcu_read_lock_bh_held+0xb0/0xb0
[   47.648111][ T1897]  ? lockdep_hardirqs_on_prepare+0x273/0x3e0
[   47.648735][ T1897]  process_one_work+0x92b/0x1460
[   47.649262][ T1897]  ? pwq_dec_nr_in_flight+0x330/0x330
[   47.649816][ T1897]  ? rwlock_bug.part.0+0x90/0x90
[   47.650336][ T1897]  worker_thread+0x95/0xe00
[   47.650830][ T1897]  ? __kthread_parkme+0x115/0x1e0
[   47.651361][ T1897]  ? process_one_work+0x1460/0x1460
[   47.651904][ T1897]  kthread+0x3a1/0x480
[   47.652329][ T1897]  ? set_kthread_struct+0x120/0x120
[   47.652878][ T1897]  ret_from_fork+0x1f/0x30
[   47.653370][ T1897]
[   47.653608][ T1897]
[   47.653848][ T1897] addr ffffc90001f6f000 is located in stack of task kworker/0:2/1897 at offset 512 in frame:
[   47.654891][ T1897]  brcmf_c_preinit_dcmds+0x0/0xc40
[   47.655442][ T1897]
[   47.655690][ T1897] this frame has 4 objects:
[   47.656151][ T1897]  [48, 56) 'ptr'
[   47.656159][ T1897]  [80, 148) 'revinfo'
[   47.656534][ T1897]  [192, 210) 'eventmask'
[   47.656953][ T1897]  [256, 512) 'buf'
[   47.657410][ T1897]
[   47.658035][ T1897] Memory state around the buggy address:
[   47.658743][ T1897]  ffffc90001f6ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   47.659577][ T1897]  ffffc90001f6ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   47.660394][ T1897] >ffffc90001f6f000: f3 f3 f3 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
[   47.661199][ T1897]                    ^
[   47.661625][ T1897]  ffffc90001f6f080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   47.662455][ T1897]  ffffc90001f6f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1
[   47.663318][ T1897] ==================================================================
[   47.664147][ T1897] Disabling lock debugging due to kernel taint

Reported-by: Dokyung Song 
Reported-by: Jisoo Jang 
Reported-by: Minsuk Kang 
Signed-off-by: Jisoo Jang 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20221115043458.37562-1-jisoo.jang@yonsei.ac.kr
Signed-off-by: Sasha Levin

wifi: mwifiex: fix loop iterator in mwifiex_update_ampdu_txwinsize()

2023-03-11T15:26:37+00:00

[ Upstream commit 3cfb7df24cee0f5fdc4cc5d3176cab9aadfcb430 ]

This code re-uses "i" to be the iterator for both the inside and outside
loops.  It means the outside loop will exit earlier than intended.

Fixes: d219b7eb3792 ("mwifiex: handle BT coex event to adjust Rx BA window size")
Signed-off-by: Dan Carpenter 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/Y+ERnaDaZD7RtLvX@kili
Signed-off-by: Sasha Levin

wifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback()

2023-03-11T15:26:36+00:00

[ Upstream commit 8a2f35b9830692f7a616f2f627f943bc748af13a ]

Fix a stack-out-of-bounds write that occurs in a WMI response callback
function that is called after a timeout occurs in ath9k_wmi_cmd().
The callback writes to wmi->cmd_rsp_buf, a stack-allocated buffer that
could no longer be valid when a timeout occurs. Set wmi->last_seq_id to
0 when a timeout occurred.

Found by a modified version of syzkaller.

BUG: KASAN: stack-out-of-bounds in ath9k_wmi_ctrl_rx
Write of size 4
Call Trace:
 memcpy
 ath9k_wmi_ctrl_rx
 ath9k_htc_rx_msg
 ath9k_hif_usb_reg_in_cb
 __usb_hcd_giveback_urb
 usb_hcd_giveback_urb
 dummy_timer
 call_timer_fn
 run_timer_softirq
 __do_softirq
 irq_exit_rcu
 sysvec_apic_timer_interrupt

Fixes: fb9987d0f748 ("ath9k_htc: Support for AR9271 chipset.")
Signed-off-by: Minsuk Kang 
Acked-by: Toke Høiland-Jørgensen 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20230104124130.10996-1-linuxlovemin@yonsei.ac.kr
Signed-off-by: Sasha Levin

wifi: ath9k: htc_hst: free skb in ath9k_htc_rx_msg() if there is no callback function

2023-03-11T15:26:36+00:00

[ Upstream commit 9b25e3985477ac3f02eca5fc1e0cc6850a3f7e69 ]

It is stated that ath9k_htc_rx_msg() either frees the provided skb or
passes its management to another callback function. However, the skb is
not freed in case there is no another callback function, and Syzkaller was
able to cause a memory leak. Also minor comment fix.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: fb9987d0f748 ("ath9k_htc: Support for AR9271 chipset.")
Reported-by: syzbot+e008dccab31bd3647609@syzkaller.appspotmail.com
Reported-by: syzbot+6692c72009680f7c4eb2@syzkaller.appspotmail.com
Signed-off-by: Fedor Pchelkin 
Signed-off-by: Alexey Khoroshilov 
Acked-by: Toke Høiland-Jørgensen 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20230104123546.51427-1-pchelkin@ispras.ru
Signed-off-by: Sasha Levin

wifi: orinoco: check return value of hermes_write_wordrec()

2023-03-11T15:26:36+00:00

[ Upstream commit 1e346cbb096a5351a637ec1992beffbf330547f0 ]

There is currently no return check for writing an authentication
type (HERMES_AUTH_SHARED_KEY or HERMES_AUTH_OPEN). It looks like
it was accidentally skipped.

This patch adds a return check similar to the other checks in
__orinoco_hw_setup_enc() for hermes_write_wordrec().

Detected using the static analysis tool - Svace.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Alexey Kodanev 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20221227133306.201356-1-aleksei.kodanev@bell-sw.com
Signed-off-by: Sasha Levin

wifi: wl3501_cs: don't call kfree_skb() under spin_lock_irqsave()

2023-03-11T15:26:36+00:00

[ Upstream commit 44bacbdf9066c590423259dbd6d520baac99c1a8 ]

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So replace kfree_skb()
with dev_kfree_skb_irq() under spin_lock_irqsave(). Compile
tested only.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Yang Yingliang 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20221207150453.114742-1-yangyingliang@huawei.com
Signed-off-by: Sasha Levin

wifi: libertas: cmdresp: don't call kfree_skb() under spin_lock_irqsave()

2023-03-11T15:26:35+00:00

[ Upstream commit 708a49a64237f19bd404852f297aaadbc9e7fee0 ]

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So replace kfree_skb()
with dev_kfree_skb_irq() under spin_lock_irqsave(). Compile
tested only.

Fixes: f52b041aed77 ("libertas: Add spinlock to avoid race condition")
Signed-off-by: Yang Yingliang 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20221207150008.111743-5-yangyingliang@huawei.com
Signed-off-by: Sasha Levin

wifi: libertas: main: don't call kfree_skb() under spin_lock_irqsave()

2023-03-11T15:26:35+00:00

[ Upstream commit f393df151540bf858effbd29ff572ab94e76a4c4 ]

It is not allowed to call kfree_skb() from hardware interrupt
context or with interrupts being disabled. So replace kfree_skb()
with dev_kfree_skb_irq() under spin_lock_irqsave(). Compile
tested only.

Fixes: d2e7b3425c47 ("libertas: disable functionality when interface is down")
Signed-off-by: Yang Yingliang 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20221207150008.111743-4-yangyingliang@huawei.com
Signed-off-by: Sasha Levin