Re: ext4 memory leak (was Re: [PATCH] x86: _edata should include all .data.* sections on X86_64)

Catalin Marinas
2009-07-15T10:33:48Z

On Wed, 2009-07-15 at 13:33 +0530, Aneesh Kumar K.V wrote:
> Can you try this patch ?
[...]
> ext4: Memory leak fix ext4_group_info allocation.
>
> commit 5f21b0e642d7bf6fe4434c9ba12bc9cb96b17cf7 was done to
> reallocate groupinfo struct during resize properly. That goal
> was to allocate new groupinfo struct when we are adding new block
> groups during resize. Calling ext4_mb_add_group_info in the
> mballoc initialization code path resulted in we reallocating
> the group info struct . Fix this by not separately allocating
> group info in the mballoc init path and always depend on
> ext4_mb_add_group_info to allocate group info struct.
>
> The earlier code also had a bug that we allocated less number of
> group info struct for the last meta group. But on resize we
> expected that we had EXT4_DESC_PER_BLOCK group info struct for
> each meta group.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

The kmemleak report disappeared.

Tested-by: Catalin Marinas <catalin.marinas@arm.com>

BTW, there are a few compiler warnings about unused variables with this
patch.

--
Catalin