From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 207383] [Regression] 5.7 amdgpu/polaris11 gpf: amdgpu_atomic_commit_tail
Date: Wed, 22 Jul 2020 07:27:17 +0000 [thread overview]
Message-ID: <bug-207383-2300-x14dfrxGWa@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-207383-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=207383
--- Comment #83 from Christian König (christian.koenig@amd.com) ---
Instead of working around the bug I think we should concentrate on nailing the
root cause.
I suggest to insert an use after free check into just that structure. In other
words add a field "magic_number" will it with 0xdeadbeef on allocation and set
it to zero before the kfree().
A simple BUG_ON(ptr->magic_number != 0xdeadbeef) should yield results rather
quickly.
Then just add printk()s before the kfree() to figure out why we have this use
after free race.
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next prev parent reply other threads:[~2020-07-22 7:27 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-21 9:51 [Bug 207383] New: [Regression] 5.7-rc: amdgpu/polaris11 gpf: amdgpu_atomic_commit_tail bugzilla-daemon
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