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authorStefan Weinhuber <wein@de.ibm.com>2013-11-29 14:37:20 (GMT)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-12-02 14:31:06 (GMT)
commitb2b0154e49e2b9470ae0d082128b5549cbe71152 (patch)
tree6259d0944460c1597ed0406436d5aea88a38a84f /drivers/s390
parentaf91706d5ddecb4a9858cca9e90d463037cfd498 (diff)
downloadlinux-b2b0154e49e2b9470ae0d082128b5549cbe71152.tar.xz
s390/dasd: fix memory leak caused by dangling references to request_queue
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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/block/dasd_genhd.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index f649217..f224d59 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -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;