lkml.org 
[lkml]   [2020]   [Jun]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.4 24/48] iommu: Fix reference count leak in iommu_group_alloc.
Date
From: Qiushi Wu <wu000273@umn.edu>

[ Upstream commit 7cc31613734c4870ae32f5265d576ef296621343 ]

kobject_init_and_add() takes reference even when it fails.
Thus, when kobject_init_and_add() returns an error,
kobject_put() must be called to properly clean up the kobject.

Fixes: d72e31c93746 ("iommu: IOMMU Groups")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Link: https://lore.kernel.org/r/20200527210020.6522-1-wu000273@umn.edu
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iommu/iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -206,7 +206,7 @@ again:
mutex_lock(&iommu_group_mutex);
ida_remove(&iommu_group_ida, group->id);
mutex_unlock(&iommu_group_mutex);
- kfree(group);
+ kobject_put(&group->kobj);
return ERR_PTR(ret);
}


\
 
 \ /
  Last update: 2020-06-01 21:01    [W:1.398 / U:0.352 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site