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s390/dasd: fix memory leak caused by dangling references to request_queue

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After the call to del_gendisk, the gendisk still holds a reference to
its request_queue. We must not modify the gendisks queue pointer
before the put_disk call, or the gendisk_release function cannot
release the reference and the memory for the request_queue structure
is lost.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Stefan Weinhuber 2013-11-29 15:37:20 +01:00 committed by Martin Schwidefsky
parent af91706d5d
commit b2b0154e49
1 changed files with 0 additions and 1 deletions
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drivers/s390/block/dasd_genhd.c
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@ -87,7 +87,6 @@ void dasd_gendisk_free(struct dasd_block *block)
{
if (block->gdp) {
del_gendisk(block->gdp);
block->gdp->queue = NULL;
block->gdp->private_data = NULL;
put_disk(block->gdp);
block->gdp = NULL;