Re: [PATCH] drm/i915: Protect guc_fini_wq() against module load abort

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Quoting Chris Wilson (2018-07-24 14:40:46)
> Prevent
> [  397.873143] general protection fault: 0000 [#1] PREEMPT SMP PTI
> [  397.873154] CPU: 4 PID: 4799 Comm: drv_module_relo Tainted: G     U            4.18.0-rc6-CI-CI_DRM_4534+ #1
> [  397.873162] Hardware name: Micro-Star International Co., Ltd. MS-7B54/Z370M MORTAR (MS-7B54), BIOS 1.10 12/28/2017
> [  397.873175] RIP: 0010:__lock_acquire+0xf6/0x1b50
> [  397.873179] Code: 85 c0 4c 8b 9d 40 ff ff ff 8b 8d 38 ff ff ff 44 8b 8d 30 ff ff ff 4c 8b 85 28 ff ff ff 44 8b 95 24 ff ff ff 0f 84 54 03 00 00 <f0> ff 80 38 01 00 00 8b 15 45 8c 59 02 45 8b bc 24 70 08 00 00 85
> [  397.873240] RSP: 0018:ffffc90000497b40 EFLAGS: 00010002
> [  397.873246] RAX: 6b6b6b6b6b6b6b6b RBX: 0000000000000001 RCX: 0000000000000000

On second thoughts, that's POISON_FREE.
-Chris
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