This is a note to let you know that I've just added the patch titled
btrfs: make error messages more clear when getting a chunk map
to the 6.6-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-make-error-messages-more-clear-when-getting-a-chunk-map.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 7d410d5efe04e42a6cd959bfe6d59d559fdf8b25 Mon Sep 17 00:00:00 2001
From: Filipe Manana <fdmanana@xxxxxxxx>
Date: Tue, 21 Nov 2023 13:38:33 +0000
Subject: btrfs: make error messages more clear when getting a chunk map
From: Filipe Manana <fdmanana@xxxxxxxx>
commit 7d410d5efe04e42a6cd959bfe6d59d559fdf8b25 upstream.
When getting a chunk map, at btrfs_get_chunk_map(), we do some sanity
checks to verify we found a chunk map and that map found covers the
logical address the caller passed in. However the messages aren't very
clear in the sense that don't mention the issue is with a chunk map and
one of them prints the 'length' argument as if it were the end offset of
the requested range (while the in the string format we use %llu-%llu
which suggests a range, and the second %llu-%llu is actually a range for
the chunk map). So improve these two details in the error messages.
CC: stable@xxxxxxxxxxxxxxx # 5.4+
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Signed-off-by: Filipe Manana <fdmanana@xxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: David Sterba <dsterba@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/btrfs/volumes.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -3045,15 +3045,16 @@ struct extent_map *btrfs_get_chunk_map(s
read_unlock(&em_tree->lock);
if (!em) {
- btrfs_crit(fs_info, "unable to find logical %llu length %llu",
+ btrfs_crit(fs_info,
+ "unable to find chunk map for logical %llu length %llu",
logical, length);
return ERR_PTR(-EINVAL);
}
if (em->start > logical || em->start + em->len <= logical) {
btrfs_crit(fs_info,
- "found a bad mapping, wanted %llu-%llu, found %llu-%llu",
- logical, length, em->start, em->start + em->len);
+ "found a bad chunk map, wanted %llu-%llu, found %llu-%llu",
+ logical, logical + length, em->start, em->start + em->len);
free_extent_map(em);
return ERR_PTR(-EINVAL);
}
Patches currently in stable-queue which might be from fdmanana@xxxxxxxx are
queue-6.6/btrfs-fix-off-by-one-when-checking-chunk-map-includes-logical-address.patch
queue-6.6/btrfs-fix-64bit-compat-send-ioctl-arguments-not-initializing-version-member.patch
queue-6.6/btrfs-make-error-messages-more-clear-when-getting-a-chunk-map.patch
queue-6.6/btrfs-free-the-allocated-memory-if-btrfs_alloc_page_array-fails.patch
