This is a note to let you know that I've just added the patch titled
f2fs: fix to initialize map.m_pblk in f2fs_precache_extents()
to the 4.19-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:
f2fs-fix-to-initialize-map.m_pblk-in-f2fs_precache_e.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6a3f5a79d2733563ac65520c138790a3e3e6888a
Author: Chao Yu <chao@xxxxxxxxxx>
Date: Sat Oct 7 15:45:52 2023 +0800
f2fs: fix to initialize map.m_pblk in f2fs_precache_extents()
[ Upstream commit 8b07c1fb0f1ad139373c8253f2fad8bc43fab07d ]
Otherwise, it may print random physical block address in tracepoint
of f2fs_map_blocks() as below:
f2fs_map_blocks: dev = (253,16), ino = 2297, file offset = 0, start blkaddr = 0xa356c421, len = 0x0, flags = 0
Fixes: c4020b2da4c9 ("f2fs: support F2FS_IOC_PRECACHE_EXTENTS")
Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 2a7249496c57e..043ce96ac1270 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2892,6 +2892,7 @@ int f2fs_precache_extents(struct inode *inode)
return -EOPNOTSUPP;
map.m_lblk = 0;
+ map.m_pblk = 0;
map.m_next_pgofs = NULL;
map.m_next_extent = &m_next_extent;
map.m_seg_type = NO_CHECK_TYPE;
