From 9297ebf29ad9118edd6c0fedc84f03e35028827d Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 18 Mar 2014 11:27:37 -0400 Subject: [PATCH] drm/i915: Do not dereference pointers from ring buffer in evict event The TP_printk() should never dereference any pointers, because the ring buffer can be read at some unknown time in the future. If a device no longer exists, it can cause a kernel oops. This also makes this event useless when saving the ring buffer in userspaces tools such as perf and trace-cmd. The i915_gem_evict_vm dereferences the vm pointer which may also not exist when the ring buffer is read sometime in the future. Link: http://lkml.kernel.org/r/1395095198-20034-3-git-send-email-artagnon@gmail.com Reported-by: Ramkumar Ramachandra Cc: stable@vger.kernel.org # 3.13+ Fixes: bcccff847d1f "drm/i915: trace vm eviction instead of everything" Signed-off-by: Steven Rostedt [danvet: Try to make it actually compile] Signed-off-by: Daniel Vetter --- Reading git-format-patch failed