out-of-bounds array index

From: Jens Axboe
Date: Thu Feb 07 2008 - 13:56:59 EST


Hi,

Just saw this from gcc:

drivers/char/drm/i915_drv.c: In function ?i915_suspend?:
drivers/char/drm/i915_drv.c:173: warning: array subscript is above array
bounds
CC [M] drivers/char/drm/i915_dma.o
drivers/char/drm/i915_drv.c: In function ?i915_resume?:
drivers/char/drm/i915_drv.c:220: warning: array subscript is above array
bounds

It's this code:

dev_priv->saveGR[0x18] =
i915_read_indexed(VGA_GR_INDEX, VGA_GR_DATA, 0x18);

which looks legit, since saveGR is

u8 saveGR[24];

It has been introduced by commit
ba8bbcf6ff4650712f64c0ef61139c73898e2165, which seems to be you Jesse.

--
Jens Axboe

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