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authorJan Stancek <jstancek@redhat.com>2020-01-03 18:37:18 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2020-01-03 10:39:08 -0800
commit15f0ec941f4f908fefa23a30ded8358977cc1cc0 (patch)
tree98915c2ae263664ccbf0503d5b65df81cacd10bd /fs
parent7ca4ad5ba886557b67d42242a80f303c3a99ded1 (diff)
mm/hugetlbfs: fix for_each_hstate() loop in init_hugetlbfs_fs()
LTP memfd_create04 started failing for some huge page sizes after v5.4-10135-gc3bfc5dd73c6. The problem is the check introduced to for_each_hstate() loop that should skip default_hstate_idx. Since it doesn't update 'i' counter, all subsequent huge page sizes are skipped as well. Fixes: 8fc312b32b25 ("mm/hugetlbfs: fix error handling when setting up mounts") Signed-off-by: Jan Stancek <jstancek@redhat.com> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/hugetlbfs/inode.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index d5c2a3158610..a66e425884d1 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -1498,8 +1498,10 @@ static int __init init_hugetlbfs_fs(void)
/* other hstates are optional */
i = 0;
for_each_hstate(h) {
- if (i == default_hstate_idx)
+ if (i == default_hstate_idx) {
+ i++;
continue;
+ }
mnt = mount_one_hugetlbfs(h);
if (IS_ERR(mnt))

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