| Submitter | Luis Henriques |
|---|---|
| Date | March 4, 2013, 8:48 p.m. |
| Message ID | <1362430137-22112-1-git-send-email-luis.henriques@canonical.com> |
| Download | mbox | patch |
| Permalink | /patch/224796/ |
| State | New |
| Headers | show |
Comments
Patch
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 037e0bb..2208f0f 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -575,6 +575,7 @@ static int __btrfs_close_devices(struct btrfs_fs_devices *fs_devices) new_device->writeable = 0; new_device->in_fs_metadata = 0; new_device->can_discard = 0; + spin_lock_init(&new_device->io_lock); list_replace_rcu(&device->dev_list, &new_device->dev_list); call_rcu(&device->rcu, free_device);
This is a note to let you know that I have just added a patch titled btrfs: Init io_lock after cloning btrfs device struct to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From f3640d1862446a9136d114e1edcba6044510e8ff Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx@linutronix.de> Date: Wed, 20 Feb 2013 14:06:20 -0500 Subject: [PATCH] btrfs: Init io_lock after cloning btrfs device struct commit 1cba0cdf5e4dbcd9e5fa5b54d7a028e55e2ca057 upstream. __btrfs_close_devices() clones btrfs device structs with memcpy(). Some of the fields in the clone are reinitialized, but it's missing to init io_lock. In mainline this goes unnoticed, but on RT it leaves the plist pointing to the original about to be freed lock struct. Initialize io_lock after cloning, so no references to the original struct are left. Reported-and-tested-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Chris Mason <chris.mason@fusionio.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- fs/btrfs/volumes.c | 1 + 1 file changed, 1 insertion(+) -- 1.8.1.2