From: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Subject: hugetlbfs: fix mount mode command line processing
In commit 32021982a324 ("hugetlbfs: Convert to fs_context") processing of
the mount mode string was changed from match_octal() to fsparam_u32. This
changed existing behavior as match_octal does not require octal values to
have a '0' prefix, but fsparam_u32 does.
Use fsparam_u32oct which provides the same behavior as match_octal.
Link: https://lkml.kernel.org/r/20210721183326.102716-1-mike.kravetz@xxxxxxxxxx
Fixes: 32021982a324 ("hugetlbfs: Convert to fs_context")
Signed-off-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Reported-by: Dennis Camera <bugs+kernel.org@xxxxxxx>
Reviewed-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hugetlbfs/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/hugetlbfs/inode.c~hugetlbfs-fix-mount-mode-command-line-processing
+++ a/fs/hugetlbfs/inode.c
@@ -77,7 +77,7 @@ enum hugetlb_param {
static const struct fs_parameter_spec hugetlb_fs_parameters[] = {
fsparam_u32 ("gid", Opt_gid),
fsparam_string("min_size", Opt_min_size),
- fsparam_u32 ("mode", Opt_mode),
+ fsparam_u32oct("mode", Opt_mode),
fsparam_string("nr_inodes", Opt_nr_inodes),
fsparam_string("pagesize", Opt_pagesize),
fsparam_string("size", Opt_size),
_
