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2615e3cdbd
The ieee80211_find_sta_by_ifaddr call in
ath10k_wmi_tlv_parse_peer_stats_info must be called while holding the
RCU read lock. Otherwise, the following warning will be seen when RCU
usage checking is enabled:
=============================
WARNING: suspicious RCU usage
5.10.3 #8 Tainted: G W
-----------------------------
include/linux/rhashtable.h:594 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
no locks held by ksoftirqd/1/16.
stack backtrace:
CPU: 1 PID: 16 Comm: ksoftirqd/1 Tainted: G W 5.10.3 #8
Hardware name: HP Grunt/Grunt, BIOS Google_Grunt.11031.104.0 09/05/2019
Call Trace:
dump_stack+0xab/0x115
sta_info_hash_lookup+0x71/0x1e9 [mac80211]
? lock_is_held_type+0xe6/0x12f
? __kasan_kmalloc+0xfb/0x112
ieee80211_find_sta_by_ifaddr+0x12/0x61 [mac80211]
ath10k_wmi_tlv_parse_peer_stats_info+0xbd/0x10b [ath10k_core]
ath10k_wmi_tlv_iter+0x8b/0x1a1 [ath10k_core]
? ath10k_wmi_tlv_iter+0x1a1/0x1a1 [ath10k_core]
ath10k_wmi_tlv_event_peer_stats_info+0x103/0x13b [ath10k_core]
ath10k_wmi_tlv_op_rx+0x722/0x80d [ath10k_core]
ath10k_htc_rx_completion_handler+0x16e/0x1d7 [ath10k_core]
ath10k_pci_process_rx_cb+0x116/0x22c [ath10k_pci]
? ath10k_htc_process_trailer+0x332/0x332 [ath10k_core]
? _raw_spin_unlock_irqrestore+0x34/0x61
? lockdep_hardirqs_on+0x8e/0x12e
ath10k_ce_per_engine_service+0x55/0x74 [ath10k_core]
ath10k_ce_per_engine_service_any+0x76/0x84 [ath10k_core]
ath10k_pci_napi_poll+0x49/0x141 [ath10k_pci]
net_rx_action+0x11a/0x347
__do_softirq+0x2d3/0x539
run_ksoftirqd+0x4b/0x86
smpboot_thread_fn+0x1d0/0x2ab
? cpu_report_death+0x7f/0x7f
kthread+0x189/0x191
? cpu_report_death+0x7f/0x7f
? kthread_blkcg+0x31/0x31
ret_from_fork+0x22/0x30
Fixes:
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History
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| arch | ||
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
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| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
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| COPYING | ||
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.