<quic_haric@xxxxxxxxxxx> wrote: > When ath11k modules are removed using rmmod with spectral scan enabled, > crash is observed. Different crash trace is observed for each crash. > > Send spectral scan disable WMI command to firmware before cleaning > the spectral dbring in the spectral_deinit API to avoid this crash. > > call trace from one of the crash observed: > [ 1252.880802] Unable to handle kernel NULL pointer dereference at virtual address 00000008 > [ 1252.882722] pgd = 0f42e886 > [ 1252.890955] [00000008] *pgd=00000000 > [ 1252.893478] Internal error: Oops: 5 [#1] PREEMPT SMP ARM > [ 1253.093035] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.89 #0 > [ 1253.115261] Hardware name: Generic DT based system > [ 1253.121149] PC is at ath11k_spectral_process_data+0x434/0x574 [ath11k] > [ 1253.125940] LR is at 0x88e31017 > [ 1253.132448] pc : [<7f9387b8>] lr : [<88e31017>] psr: a0000193 > [ 1253.135488] sp : 80d01bc8 ip : 00000001 fp : 970e0000 > [ 1253.141737] r10: 88e31000 r9 : 970ec000 r8 : 00000080 > [ 1253.146946] r7 : 94734040 r6 : a0000113 r5 : 00000057 r4 : 00000000 > [ 1253.152159] r3 : e18cb694 r2 : 00000217 r1 : 1df1f000 r0 : 00000001 > [ 1253.158755] Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user > [ 1253.165266] Control: 10c0383d Table: 5e71006a DAC: 00000055 > [ 1253.172472] Process swapper/0 (pid: 0, stack limit = 0x60870141) > [ 1253.458055] [<7f9387b8>] (ath11k_spectral_process_data [ath11k]) from [<7f917fdc>] (ath11k_dbring_buffer_release_event+0x214/0x2e4 [ath11k]) > [ 1253.466139] [<7f917fdc>] (ath11k_dbring_buffer_release_event [ath11k]) from [<7f8ea3c4>] (ath11k_wmi_tlv_op_rx+0x1840/0x29cc [ath11k]) > [ 1253.478807] [<7f8ea3c4>] (ath11k_wmi_tlv_op_rx [ath11k]) from [<7f8fe868>] (ath11k_htc_rx_completion_handler+0x180/0x4e0 [ath11k]) > [ 1253.490699] [<7f8fe868>] (ath11k_htc_rx_completion_handler [ath11k]) from [<7f91308c>] (ath11k_ce_per_engine_service+0x2c4/0x3b4 [ath11k]) > [ 1253.502386] [<7f91308c>] (ath11k_ce_per_engine_service [ath11k]) from [<7f9a4198>] (ath11k_pci_ce_tasklet+0x28/0x80 [ath11k_pci]) > [ 1253.514811] [<7f9a4198>] (ath11k_pci_ce_tasklet [ath11k_pci]) from [<8032227c>] (tasklet_action_common.constprop.2+0x64/0xe8) > [ 1253.526476] [<8032227c>] (tasklet_action_common.constprop.2) from [<803021e8>] (__do_softirq+0x130/0x2d0) > [ 1253.537756] [<803021e8>] (__do_softirq) from [<80322610>] (irq_exit+0xcc/0xe8) > [ 1253.547304] [<80322610>] (irq_exit) from [<8036a4a4>] (__handle_domain_irq+0x60/0xb4) > [ 1253.554428] [<8036a4a4>] (__handle_domain_irq) from [<805eb348>] (gic_handle_irq+0x4c/0x90) > [ 1253.562321] [<805eb348>] (gic_handle_irq) from [<80301a78>] (__irq_svc+0x58/0x8c) > > Tested-on: QCN6122 hw1.0 AHB WLAN.HK.2.6.0.1-00851-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Hari Chandrakanthan <quic_haric@xxxxxxxxxxx> > Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 161c64de239c ath11k: disable spectral scan during spectral deinit -- https://patchwork.kernel.org/project/linux-wireless/patch/1649396345-349-1-git-send-email-quic_haric@xxxxxxxxxxx/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
