This is a note to let you know that I've just added the patch titled
ext4: fix miss release buffer head in ext4_fc_write_inode
to the 5.15-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:
ext4-fix-miss-release-buffer-head-in-ext4_fc_write_inode.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ccbf8eeb39f2ff00b54726a2b20b35d788c4ecb5 Mon Sep 17 00:00:00 2001
From: Ye Bin <yebin10@xxxxxxxxxx>
Date: Wed, 14 Sep 2022 18:08:59 +0800
Subject: ext4: fix miss release buffer head in ext4_fc_write_inode
From: Ye Bin <yebin10@xxxxxxxxxx>
commit ccbf8eeb39f2ff00b54726a2b20b35d788c4ecb5 upstream.
In 'ext4_fc_write_inode' function first call 'ext4_get_inode_loc' get 'iloc',
after use it miss release 'iloc.bh'.
So just release 'iloc.bh' before 'ext4_fc_write_inode' return.
Cc: stable@xxxxxxxxxx
Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Link: https://lore.kernel.org/r/20220914100859.1415196-1-yebin10@xxxxxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ext4/fast_commit.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -794,22 +794,25 @@ static int ext4_fc_write_inode(struct in
tl.fc_tag = cpu_to_le16(EXT4_FC_TAG_INODE);
tl.fc_len = cpu_to_le16(inode_len + sizeof(fc_inode.fc_ino));
+ ret = -ECANCELED;
dst = ext4_fc_reserve_space(inode->i_sb,
sizeof(tl) + inode_len + sizeof(fc_inode.fc_ino), crc);
if (!dst)
- return -ECANCELED;
+ goto err;
if (!ext4_fc_memcpy(inode->i_sb, dst, &tl, sizeof(tl), crc))
- return -ECANCELED;
+ goto err;
dst += sizeof(tl);
if (!ext4_fc_memcpy(inode->i_sb, dst, &fc_inode, sizeof(fc_inode), crc))
- return -ECANCELED;
+ goto err;
dst += sizeof(fc_inode);
if (!ext4_fc_memcpy(inode->i_sb, dst, (u8 *)ext4_raw_inode(&iloc),
inode_len, crc))
- return -ECANCELED;
-
- return 0;
+ goto err;
+ ret = 0;
+err:
+ brelse(iloc.bh);
+ return ret;
}
/*
Patches currently in stable-queue which might be from yebin10@xxxxxxxxxx are
queue-5.15/ext4-update-state-fc_regions_size-after-successful-memory-allocation.patch
queue-5.15/jbd2-fix-potential-buffer-head-reference-count-leak.patch
queue-5.15/ext4-fix-miss-release-buffer-head-in-ext4_fc_write_inode.patch
queue-5.15/jbd2-fix-potential-use-after-free-in-jbd2_fc_wait_bufs.patch
queue-5.15/btrfs-fix-race-between-quota-enable-and-quota-rescan-ioctl.patch
queue-5.15/ext4-fix-potential-memory-leak-in-ext4_fc_record_modified_inode.patch
queue-5.15/ext4-fix-potential-memory-leak-in-ext4_fc_record_regions.patch
queue-5.15/jbd2-add-miss-release-buffer-head-in-fc_do_one_pass.patch
