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 <stable@xxxxxxxxxxxxxxx> know about it.
>From 66ac9fe7bacf9fa76c472efc7a7aaa590c7bce6a Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@xxxxxxxx>
Date: Tue, 26 Apr 2016 16:03:57 +0200
Subject: btrfs: add check to sysfs handler of label
From: David Sterba <dsterba@xxxxxxxx>
commit 66ac9fe7bacf9fa76c472efc7a7aaa590c7bce6a upstream.
Add a sanity check for the fs_info as we will dereference it, similar to
what the 'store features' handler does.
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/sysfs.c | 3 +++
1 file changed, 3 insertions(+)
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -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 dsterba@xxxxxxxx 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
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