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| author | Miaoqian Lin <linmq006@gmail.com> | 2022-01-20 13:10:25 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-01-23 19:13:09 +0300 |
| commit | 83114df32ae779df57e0af99a8ba6c3968b2ba3d (patch) | |
| tree | 5874ade6731fa6ce555079d29b7c1d29a41a06a3 | |
| parent | dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0 (diff) | |
| download | linux-83114df32ae779df57e0af99a8ba6c3968b2ba3d.tar.xz | |
block: fix memory leak in disk_register_independent_access_ranges
kobject_init_and_add() takes reference even when it fails.
According to the doc of kobject_init_and_add()
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object.
Fix this issue by adding kobject_put().
Callback function blk_ia_ranges_sysfs_release() in kobject_put()
can handle the pointer "iars" properly.
Fixes: a2247f19ee1c ("block: Add independent access ranges support")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Link: https://lore.kernel.org/r/20220120101025.22411-1-linmq006@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-ia-ranges.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-ia-ranges.c b/block/blk-ia-ranges.c index b925f3db3ab7..18c68d8b9138 100644 --- a/block/blk-ia-ranges.c +++ b/block/blk-ia-ranges.c @@ -144,7 +144,7 @@ int disk_register_independent_access_ranges(struct gendisk *disk, &q->kobj, "%s", "independent_access_ranges"); if (ret) { q->ia_ranges = NULL; - kfree(iars); + kobject_put(&iars->kobj); return ret; } |