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32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
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From cd821a40b76919b0815a9a7c09d0f6cf1f15a7ee Mon Sep 17 00:00:00 2001
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From: Sunil Khatri <sunilkh@codeaurora.org>
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Date: Mon, 5 Jun 2017 11:16:57 -0700
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Subject: [PATCH] msm: kgsl: Fix the race between context create and destroy
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Hold the context lock before updating the context id in
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param->drawctxt_id to avoid race condition between context
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creation and context destroy.
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Bug: 36491445
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Change-Id: Ic26d3e5b68078c02d15c38080b1a262ea4b1f7fe
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Signed-off-by: Sunil Khatri <sunilkh@codeaurora.org>
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---
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drivers/gpu/msm/kgsl.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/gpu/msm/kgsl.c b/drivers/gpu/msm/kgsl.c
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index 7186ccf6b0cb3..5fce561ae971e 100644
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--- a/drivers/gpu/msm/kgsl.c
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+++ b/drivers/gpu/msm/kgsl.c
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@@ -1668,9 +1668,9 @@ long kgsl_ioctl_drawctxt_create(struct kgsl_device_private *dev_priv,
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/* Commit the pointer to the context in context_idr */
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write_lock(&device->context_lock);
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idr_replace(&device->context_idr, context, context->id);
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+ param->drawctxt_id = context->id;
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write_unlock(&device->context_lock);
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- param->drawctxt_id = context->id;
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done:
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return result;
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}
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