diff options
| author | Johan Hovold <[email protected]> | 2023-10-19 17:31:14 +0200 |
|---|---|---|
| committer | Kalle Valo <[email protected]> | 2023-10-25 12:59:15 +0300 |
| commit | 1a5352a81b4720ba43d9c899974e3bddf7ce0ce8 (patch) | |
| tree | 778010b8eedab004d735e20c3e0ec1c854417335 /tools/perf/scripts/python/net_dropmonitor.py | |
| parent | cda8607e824b8f4f1e5f26fef17736c8be4358f8 (diff) | |
wifi: ath11k: fix temperature event locking
The ath11k active pdevs are protected by RCU but the temperature event
handling code calling ath11k_mac_get_ar_by_pdev_id() was not marked as a
read-side critical section as reported by RCU lockdep:
=============================
WARNING: suspicious RCU usage
6.6.0-rc6 #7 Not tainted
-----------------------------
drivers/net/wireless/ath/ath11k/mac.c:638 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
no locks held by swapper/0/0.
...
Call trace:
...
lockdep_rcu_suspicious+0x16c/0x22c
ath11k_mac_get_ar_by_pdev_id+0x194/0x1b0 [ath11k]
ath11k_wmi_tlv_op_rx+0xa84/0x2c1c [ath11k]
ath11k_htc_rx_completion_handler+0x388/0x510 [ath11k]
Mark the code in question as an RCU read-side critical section to avoid
any potential use-after-free issues.
Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23
Fixes: a41d10348b01 ("ath11k: add thermal sensor device support")
Cc: [email protected] # 5.7
Signed-off-by: Johan Hovold <[email protected]>
Acked-by: Jeff Johnson <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/net_dropmonitor.py')
0 files changed, 0 insertions, 0 deletions