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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2006-10-17 00:10:27 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-17 08:18:48 -0700 |
| commit | ea6f94dfe9db4d19a39e774cfafa5c9428a9fdbc (patch) | |
| tree | 22c0b158dd9bf54e516eb7a9d6f50e3405b729d7 /drivers/block/rd.c | |
| parent | 3864c4894a7f4c03d69a90082a5bb0ab10e437ab (diff) | |
| download | op-kernel-dev-ea6f94dfe9db4d19a39e774cfafa5c9428a9fdbc.zip op-kernel-dev-ea6f94dfe9db4d19a39e774cfafa5c9428a9fdbc.tar.gz | |
[PATCH] rd: memory leak on rd_init() failure
If RAM disk driver initialization fails due to blk_alloc_queue() faulure, the
gendisk structs stored in rd_disks[] will not be freed completely.
This patch resolves that memory leak case by doing alloc_disk() and
blk_alloc_queue() at the same time.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/block/rd.c')
| -rw-r--r-- | drivers/block/rd.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/block/rd.c b/drivers/block/rd.c index a3f64bf..485aa87 100644 --- a/drivers/block/rd.c +++ b/drivers/block/rd.c @@ -432,6 +432,12 @@ static int __init rd_init(void) rd_disks[i] = alloc_disk(1); if (!rd_disks[i]) goto out; + + rd_queue[i] = blk_alloc_queue(GFP_KERNEL); + if (!rd_queue[i]) { + put_disk(rd_disks[i]); + goto out; + } } if (register_blkdev(RAMDISK_MAJOR, "ramdisk")) { @@ -442,10 +448,6 @@ static int __init rd_init(void) for (i = 0; i < CONFIG_BLK_DEV_RAM_COUNT; i++) { struct gendisk *disk = rd_disks[i]; - rd_queue[i] = blk_alloc_queue(GFP_KERNEL); - if (!rd_queue[i]) - goto out_queue; - blk_queue_make_request(rd_queue[i], &rd_make_request); blk_queue_hardsect_size(rd_queue[i], rd_blocksize); @@ -466,8 +468,6 @@ static int __init rd_init(void) CONFIG_BLK_DEV_RAM_COUNT, rd_size, rd_blocksize); return 0; -out_queue: - unregister_blkdev(RAMDISK_MAJOR, "ramdisk"); out: while (i--) { put_disk(rd_disks[i]); |
