Patch "btrfs: add check to sysfs handler of label" has been added to the 4.5-stable tree

This is a note to let you know that I've just added the patch titled

btrfs: add check to sysfs handler of label

to the 4.5-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:
btrfs-add-check-to-sysfs-handler-of-label.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: David Sterba <[email protected]>
Date: Tue, 26 Apr 2016 16:03:57 +0200
Subject: btrfs: add check to sysfs handler of label

From: David Sterba <[email protected]>

commit 66ac9fe7bacf9fa76c472efc7a7aaa590c7bce6a upstream.

Add a sanity check for the fs_info as we will dereference it, similar to what the 'store features' handler does.

---
 fs/btrfs/sysfs.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -377,6 +377,9 @@ static ssize_t btrfs_label_store(struct
 	struct btrfs_fs_info *fs_info = to_fs_info(kobj);
 	size_t p_len;
 
+	if (!fs_info)
+		return -EPERM;
+
 	if (fs_info->sb->s_flags & MS_RDONLY)
 		return -EROFS;
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.5/btrfs-bugfix-handle-fs_ioc32_-getflags-setflags-getversion-in-btrfs_ioctl.patch queue-4.5/btrfs-pass-the-right-error-code-to-the-btrfs_std_error.patch queue-4.5/btrfs-fix-mixed-block-count-of-available-space.patch queue-4.5/btrfs-fix-memory-leak-during-raid-5-6-device-replacement.patch queue-4.5/btrfs-fix-unexpected-return-value-of-fiemap.patch queue-4.5/btrfs-do-not-create-empty-block-group-if-we-have-allocated-data.patch queue-4.5/btrfs-add-check-to-sysfs-handler-of-label.patch queue-4.5/btrfs-avoid-overflowing-f_bfree.patch queue-4.5/btrfs-fix-int32-overflow-in-shrink_delalloc.patch queue-4.5/btrfs-remove-bug_on-s-in-btrfs_map_block.patch queue-4.5/btrfs-make-state-preallocation-more-speculative-in-__set_extent_bit.patch queue-4.5/btrfs-fix-fspath-error-deallocation.patch queue-4.5/btrfs-scrub-set-bbio-to-null-before-calling-btrfs_map_block.patch queue-4.5/btrfs-add-write-protection-to-set_features-ioctl.patch queue-4.5/btrfs-allow-balancing-to-dup-with-multi-device.patch queue-4.5/btrfs-fix-divide-error-upon-chunk-s-stripe_len.patch queue-4.5/btrfs-fix-lock-dep-warning-move-scratch-dev-out-of-device_list_mutex-and-uuid_mutex.patch