Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 73/77] stm class: Fix a double free of stm_source_device | Date | Wed, 4 Sep 2019 19:54:00 +0200 |
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From: Ding Xiang <dingxiang@cmss.chinamobile.com>
commit 961b6ffe0e2c403b09a8efe4a2e986b3c415391a upstream.
In the error path of stm_source_register_device(), the kfree is unnecessary, as the put_device() before it ends up calling stm_source_device_release() to free stm_source_device, leading to a double free at the outer kfree() call. Remove it.
Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Fixes: 7bd1d4093c2fa ("stm class: Introduce an abstraction for System Trace Module devices") Link: https://lore.kernel.org/linux-arm-kernel/1563354988-23826-1-git-send-email-dingxiang@cmss.chinamobile.com/ Cc: stable@vger.kernel.org # v4.4+ Link: https://lore.kernel.org/r/20190821074955.3925-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/hwtracing/stm/core.c | 1 - 1 file changed, 1 deletion(-)
--- a/drivers/hwtracing/stm/core.c +++ b/drivers/hwtracing/stm/core.c @@ -1020,7 +1020,6 @@ int stm_source_register_device(struct de err: put_device(&src->dev); - kfree(src); return err; }
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