本文主要是介绍高通平台稳定性分析-hungtask causing panic-死锁，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
直接开整吧，dmesg_TZ.txt错误信息：
(3)[71:khungtaskd]INFO: task Binder:2848_9:3784 tgid:2848 blocked for 120s in whitelist
10707 cpu4
Call trace:__switch_to+0x244/0x460__schedule+0x590/0xac4schedule+0x64/0x188__mutex_lock+0x444/0x998__mutex_lock_slowpath+0x14/0x20regulator_lock_dependent+0x6c/0x378regulator_enable+0x3c/0x84arm_smmu_power_on+0xa8/0x298 [arm_smmu]arm_smmu_runtime_resume+0x18/0x24 [arm_smmu]pm_generic_runtime_resume+0x44/0x80__rpm_callback+0x18c/0xb34rpm_resume+0x8e0/0x11ec__pm_runtime_resume+0x68/0x148arm_smmu_flush_iotlb_all+0x44/0x13c [arm_smmu]_iopgtbl_unmap+0xb4/0x110 [msm_kgsl]kgsl_iopgtbl_unmap+0x3c/0x48 [msm_kgsl]kgsl_mmu_unmap+0xa4/0x334 [msm_kgsl]kgsl_unmap_and_put_gpuaddr+0x40/0xdc [msm_kgsl]kgsl_mem_entry_detach_process+0x80/0x190 [msm_kgsl]kgsl_mem_entry_destroy+0x58/0x1a0 [msm_kgsl]kgsl_ioctl_gpuobj_free+0x200/0x294 [msm_kgsl]kgsl_ioctl_helper+0x114/0x208 [msm_kgsl]kgsl_ioctl+0x34/0xe0 [msm_kgsl]__arm64_sys_ioctl+0x170/0x1ecel0_svc_common+0xd4/0x26cel0_svc+0x34/0x94el0_sync_handler+0x88/0xe8el0_sync+0x1a4/0x1c0
明显是等锁
在task.dtask窗口中搜索
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