mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-21 16:05:29 -04:00
e9e094a973
Currently, we encounter the following kernel call trace when a firmware
crash occurs. This happens because the host sends WMI commands to the
firmware while it is in recovery, causing the commands to fail and
resulting in the kernel call trace.
Set the ATH12K_FLAG_CRASH_FLUSH and ATH12K_FLAG_RECOVERY flags when the
host driver receives the firmware crash notification from MHI. This
prevents sending WMI commands to the firmware during recovery.
Call Trace:
<TASK>
dump_stack_lvl+0x75/0xc0
register_lock_class+0x6be/0x7a0
? __lock_acquire+0x644/0x19a0
__lock_acquire+0x95/0x19a0
lock_acquire+0x265/0x310
? ath12k_ce_send+0xa2/0x210 [ath12k]
? find_held_lock+0x34/0xa0
? ath12k_ce_send+0x56/0x210 [ath12k]
_raw_spin_lock_bh+0x33/0x70
? ath12k_ce_send+0xa2/0x210 [ath12k]
ath12k_ce_send+0xa2/0x210 [ath12k]
ath12k_htc_send+0x178/0x390 [ath12k]
ath12k_wmi_cmd_send_nowait+0x76/0xa0 [ath12k]
ath12k_wmi_cmd_send+0x62/0x190 [ath12k]
ath12k_wmi_pdev_bss_chan_info_request+0x62/0xc0 [ath1
ath12k_mac_op_get_survey+0x2be/0x310 [ath12k]
ieee80211_dump_survey+0x99/0x240 [mac80211]
nl80211_dump_survey+0xe7/0x470 [cfg80211]
? kmalloc_reserve+0x59/0xf0
genl_dumpit+0x24/0x70
netlink_dump+0x177/0x360
__netlink_dump_start+0x206/0x280
genl_family_rcv_msg_dumpit.isra.22+0x8a/0xe0
? genl_family_rcv_msg_attrs_parse.isra.23+0xe0/0xe0
? genl_op_lock.part.12+0x10/0x10
? genl_dumpit+0x70/0x70
genl_rcv_msg+0x1d0/0x290
? nl80211_del_station+0x330/0x330 [cfg80211]
? genl_get_cmd_both+0x50/0x50
netlink_rcv_skb+0x4f/0x100
genl_rcv+0x1f/0x30
netlink_unicast+0x1b6/0x260
netlink_sendmsg+0x31a/0x450
__sock_sendmsg+0xa8/0xb0
____sys_sendmsg+0x1e4/0x260
___sys_sendmsg+0x89/0xe0
? local_clock_noinstr+0xb/0xc0
? rcu_is_watching+0xd/0x40
? kfree+0x1de/0x370
? __sys_sendmsg+0x7a/0xc0
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Fixes: a9b46dd2e4 ("wifi: ath12k: Add firmware coredump collection support")
Signed-off-by: Maharaja Kennadyrajan <maharaja.kennadyrajan@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250416020414.2161545-1-maharaja.kennadyrajan@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
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 reStructuredText 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.