linux-stable/fs/nilfs2
Ryusuke Konishi 9abbace400 nilfs2: do not propagate ENOENT error from nilfs_btree_propagate()
[ Upstream commit 8e39fbb1ed ]

In preparation for writing logs, in nilfs_btree_propagate(), which makes
parent and ancestor node blocks dirty starting from a modified data block
or b-tree node block, if the starting block does not belong to the b-tree,
i.e.  is isolated, nilfs_btree_do_lookup() called within the function
fails with -ENOENT.

In this case, even though -ENOENT is an internal code, it is propagated to
the log writer via nilfs_bmap_propagate() and may be erroneously returned
to system calls such as fsync().

Fix this issue by changing the error code to -EINVAL in this case, and
having the bmap layer detect metadata corruption and convert the error
code appropriately.

Link: https://lkml.kernel.org/r/20250428173808.6452-3-konishi.ryusuke@gmail.com
Fixes: 1f5abe7e7d ("nilfs2: replace BUG_ON and BUG calls triggerable from ioctl")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: Wentao Liang <vulab@iscas.ac.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-06-19 15:32:01 +02:00
..
alloc.c
alloc.h
bmap.c
bmap.h
btnode.c
btnode.h
btree.c nilfs2: do not propagate ENOENT error from nilfs_btree_propagate() 2025-06-19 15:32:01 +02:00
btree.h
cpfile.c
cpfile.h
dat.c
dat.h
dir.c
direct.c
direct.h
export.h
file.c
gcinode.c
ifile.c
ifile.h
inode.c
ioctl.c
Kconfig
Makefile
mdt.c
mdt.h
namei.c
nilfs.h
page.c
page.h
recovery.c
segbuf.c
segbuf.h
segment.c
segment.h
sufile.c
sufile.h
super.c
sysfs.c
sysfs.h
the_nilfs.c
the_nilfs.h