From: <gregkh@linuxfoundation.org>
To: khlebnikov@yandex-team.ru, gregkh@linuxfoundation.org, miklos@szeredi.hu
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "ovl: free stack of paths in ovl_fill_super" has been added to the 4.1-stable tree
Date: Thu, 05 Nov 2015 22:38:53 -0800 [thread overview]
Message-ID: <1446791933253@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
ovl: free stack of paths in ovl_fill_super
to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ovl-free-stack-of-paths-in-ovl_fill_super.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 0f95502ad84874b3c05fc7cdd9d4d9d5cddf7859 Mon Sep 17 00:00:00 2001
From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Date: Mon, 24 Aug 2015 15:57:18 +0300
Subject: ovl: free stack of paths in ovl_fill_super
From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
commit 0f95502ad84874b3c05fc7cdd9d4d9d5cddf7859 upstream.
This fixes small memory leak after mount.
Kmemleak report:
unreferenced object 0xffff88003683fe00 (size 16):
comm "mount", pid 2029, jiffies 4294909563 (age 33.380s)
hex dump (first 16 bytes):
20 27 1f bb 00 88 ff ff 40 4b 0f 36 02 88 ff ff '......@K.6....
backtrace:
[<ffffffff811f8cd4>] create_object+0x124/0x2c0
[<ffffffff817a059b>] kmemleak_alloc+0x7b/0xc0
[<ffffffff811dffe6>] __kmalloc+0x106/0x340
[<ffffffffa01b7a29>] ovl_fill_super+0x389/0x9a0 [overlay]
[<ffffffff81200ac4>] mount_nodev+0x54/0xa0
[<ffffffffa01b7118>] ovl_mount+0x18/0x20 [overlay]
[<ffffffff81201ab3>] mount_fs+0x43/0x170
[<ffffffff81220d34>] vfs_kern_mount+0x74/0x170
[<ffffffff812233ad>] do_mount+0x22d/0xdf0
[<ffffffff812242cb>] SyS_mount+0x7b/0xc0
[<ffffffff817b6bee>] entry_SYSCALL_64_fastpath+0x12/0x76
[<ffffffffffffffff>] 0xffffffffffffffff
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Fixes: a78d9f0d5d5c ("ovl: support multiple lower layers")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/overlayfs/super.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -981,6 +981,7 @@ static int ovl_fill_super(struct super_b
oe->lowerstack[i].dentry = stack[i].dentry;
oe->lowerstack[i].mnt = ufs->lower_mnt[i];
}
+ kfree(stack);
root_dentry->d_fsdata = oe;
Patches currently in stable-queue which might be from khlebnikov@yandex-team.ru are
queue-4.1/ovl-free-stack-of-paths-in-ovl_fill_super.patch
queue-4.1/ovl-free-lower_mnt-array-in-ovl_put_super.patch
reply other threads:[~2015-11-06 6:38 UTC|newest]
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