linux-kernel - Re: [PATCH] soc: qcom: icc-bwmon: Fix refcount imbalance seen during bwmon

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Date: Fri, 21 Jun 2024 01:11:30 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: konrad.dybcio@...aro.org,
	krzysztof.kozlowski+dt@...aro.org,
	thara.gopinath@...il.com,
	Sibi Sankar <quic_sibis@...cinc.com>
Cc: linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	quic_rgottimu@...cinc.com,
	quic_kshivnan@...cinc.com,
	abel.vesa@...aro.org
Subject: Re: [PATCH] soc: qcom: icc-bwmon: Fix refcount imbalance seen during bwmon_remove


On Thu, 13 Jun 2024 22:15:06 +0530, Sibi Sankar wrote:
> The following warning is seen during bwmon_remove due to refcount
> imbalance, fix this by releasing the OPPs after use.
> 
> Logs:
> WARNING: at drivers/opp/core.c:1640 _opp_table_kref_release+0x150/0x158
> Hardware name: Qualcomm Technologies, Inc. X1E80100 CRD (DT)
> ...
> Call trace:
> _opp_table_kref_release+0x150/0x158
> dev_pm_opp_remove_table+0x100/0x1b4
> devm_pm_opp_of_table_release+0x10/0x1c
> devm_action_release+0x14/0x20
> devres_release_all+0xa4/0x104
> device_unbind_cleanup+0x18/0x60
> device_release_driver_internal+0x1ec/0x228
> driver_detach+0x50/0x98
> bus_remove_driver+0x6c/0xbc
> driver_unregister+0x30/0x60
> platform_driver_unregister+0x14/0x20
> bwmon_driver_exit+0x18/0x524 [icc_bwmon]
> __arm64_sys_delete_module+0x184/0x264
> invoke_syscall+0x48/0x118
> el0_svc_common.constprop.0+0xc8/0xe8
> do_el0_svc+0x20/0x2c
> el0_svc+0x34/0xdc
> el0t_64_sync_handler+0x13c/0x158
> el0t_64_sync+0x190/0x194
> --[ end trace 0000000000000000 ]---
> 
> [...]

Applied, thanks!

[1/1] soc: qcom: icc-bwmon: Fix refcount imbalance seen during bwmon_remove
      commit: 24086640ab39396eb1a92d1cb1cd2f31b2677c52

Best regards,
-- 
Bjorn Andersson <andersson@...nel.org>