Re: Fix memory leak in binder--version2

From: Greg KH
Date: Mon Oct 15 2012 - 18:52:53 EST


On Mon, Oct 15, 2012 at 07:20:01AM +0000, Tu, Xiaobing wrote:
> After enabling kmemleak and run monkey, following memleak is reported:
> unreferenced object 0xeed27f80 (size 64):
> comm "Binder_8", pid 641, jiffies 4294946341 (age 2275.810s)
> hex dump (first 32 bytes):
> 4f dd 00 00 84 7f d2 ee 84 7f d2 ee 01 00 00 00 O...............
> 00 00 00 00 00 00 00 00 00 aa 4c d7 00 00 00 00 ..........L.....
> backtrace:
> [<c184fabc>] kmemleak_alloc+0x3c/0xa0
> [<c12f391e>] kmem_cache_alloc_trace+0x9e/0x180
> [<c1668bb5>] binder_thread_write+0xcf5/0x23a0
> [<c166b091>] binder_ioctl+0x1f1/0x530
> [<c130dcf6>] do_vfs_ioctl+0x86/0x5e0
> [<c130e282>] sys_ioctl+0x32/0x60
> [<c1872e01>] syscall_call+0x7/0xb
> [<ffffffff>] 0xffffffff
>
> The work item in async_todo list is not freed when binder released.
> Also the async transaction should also be freed in binder_release_work.
>
> Signed-off-by: Leon Ma <xindong.ma@xxxxxxxxx>
> Signed-off-by: Di Zhang <di.zhang@xxxxxxxxx>
> ---
> drivers/staging/android/binder.c | 6 ++++++
> 1 files changed, 6 insertions(+), 0 deletions(-)

Nice fix, but next time can you at least use scripts/get_maintainer.pl
to figure out who to send this to? I'll queue it up soon, but it took
akpm to point me at this for me to notice it.

thanks,

greg k-h
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