[Bug 105479] [BAT] igt at debugfs_test@read_all_entries - BUG: unable to handle kernel paging request at 000003030000b16f

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105479

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit c7fb3c6c1893fddbbd39e13066489050c29397c1
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Mar 13 11:31:49 2018 +0000

    drm/i915: Use sseu size for determining eu_regs[]

    eu_regs[] is written 2*max_slices times (like s_reg[]) but oddly read
    2*max_slices + max_subslices/2 times. Allocate the array large enough
    for the writes to avoid overwriting our stack and worry about the logic
    later.

    Fixes: 7aa0b14ede64 ("drm/i915: Remove variable length arrays from sseu
debugfs printers")
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105479
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
    Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
    Cc: Matthew Auld <matthew.auld at intel.com>
    Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20180313113149.1094-1-chris@chris-wilson.co.uk

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