From: Wang Shilong <[email protected]> U32_MAX is reserved for special purpose, qid_has_mapping() will return false if projid is 4294967295, dqget() will return NULL for it.
So U32_MAX is unsupported Project ID, fix to forbid it. Signed-off-by: Wang Shilong <[email protected]> --- fs/f2fs/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index ceb575f99048..861edf3c01d5 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3066,6 +3066,8 @@ int f2fs_fileattr_set(struct user_namespace *mnt_userns, u32 iflags; int err; + if (fa->fsx_projid >= U32_MAX) + return -EINVAL; if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) return -EIO; if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode))) -- 2.27.0 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
