From: Mina Almasry almasrymina@google.com
mainline inclusion from mainline-v5.19-rc1 commit 4b25f030ae69ba710eff587cabb4c57cb7e7a8a1 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I9SZXR CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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After commit db71ef79b59b ("hugetlb: make free_huge_page irq safe"), the subpool lock should be locked with spin_lock_irq() and all call sites was modified as such, except for the ones in hugetlbfs_statfs().
Link: https://lkml.kernel.org/r/20220429202207.3045-1-almasrymina@google.com Fixes: db71ef79b59b ("hugetlb: make free_huge_page irq safe") Signed-off-by: Mina Almasry almasrymina@google.com Reviewed-by: Mike Kravetz mike.kravetz@oracle.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Jinjiang Tu tujinjiang@huawei.com --- fs/hugetlbfs/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 92077383f320..58e879f089c4 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -1099,12 +1099,12 @@ static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf) if (sbinfo->spool) { long free_pages;
- spin_lock(&sbinfo->spool->lock); + spin_lock_irq(&sbinfo->spool->lock); buf->f_blocks = sbinfo->spool->max_hpages; free_pages = sbinfo->spool->max_hpages - sbinfo->spool->used_hpages; buf->f_bavail = buf->f_bfree = free_pages; - spin_unlock(&sbinfo->spool->lock); + spin_unlock_irq(&sbinfo->spool->lock); buf->f_files = sbinfo->max_inodes; buf->f_ffree = sbinfo->free_inodes; }