intel_th: msu-sink: Potential dereference of null pointer

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[ Upstream commit 82f76a4a72 ]

The return value of dma_alloc_coherent() needs to be checked.
To avoid use of null pointer in sg_set_buf() in case of the failure of
alloc.

Fixes: f220df66f6 ("intel_th: msu-sink: An example msu buffer "sink"")
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lore.kernel.org/r/20220705082637.59979-3-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Jiasheng Jiang 2022-07-05 11:26:33 +03:00 • committed by Greg Kroah-Hartman

parent fae9da7d4c

commit e1d427d462

1 changed files with 3 additions and 0 deletions

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drivers/hwtracing/intel_th/msu-sink.c

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