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| author | Linus Walleij <linus.walleij@linaro.org> | 2014-02-13 10:39:01 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-02-17 09:36:58 +0100 |
| commit | e9baa9d9d520fb0e24cca671e430689de2d4a4b2 (patch) | |
| tree | 2213cad96b18839d3c86324d8937fc279bc8746c /Documentation/spi/pxa2xx | |
| parent | Linux 3.14-rc2 (diff) | |
| download | linux-e9baa9d9d520fb0e24cca671e430689de2d4a4b2.tar.xz linux-e9baa9d9d520fb0e24cca671e430689de2d4a4b2.zip | |
dma: ste_dma40: don't dereference free:d descriptor
It appears that in the DMA40 driver the DMA tasklet will very
often dereference memory for a descriptor just free:d from the
DMA40 slab. Nothing happens because no other part of the driver
has yet had a chance to claim this memory, but it's really
nasty to dereference free:d memory, so let's check the flag
before the descriptor is free and store it in a bool variable.
Cc: stable@vger.kernel.org
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'Documentation/spi/pxa2xx')
0 files changed, 0 insertions, 0 deletions