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| author | Miklos Szeredi <mszeredi@redhat.com> | 2019-11-12 13:49:04 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2019-11-12 13:49:04 +0300 |
| commit | eb59bd17d2fa6e5e84fba61a5ebdea984222e6d5 (patch) | |
| tree | a644b87e95b4245db9a2a716f56e54fe8b82179c /fs/fuse/readdir.c | |
| parent | 31f4f5b495a62c9a8b15b1c3581acd5efeb9af8c (diff) | |
| download | linux-eb59bd17d2fa6e5e84fba61a5ebdea984222e6d5.tar.xz | |
fuse: verify attributes
If a filesystem returns negative inode sizes, future reads on the file were
causing the cpu to spin on truncate_pagecache.
Create a helper to validate the attributes. This now does two things:
- check the file mode
- check if the file size fits in i_size without overflowing
Reported-by: Arijit Banerjee <arijit@rubrik.com>
Fixes: d8a5ba45457e ("[PATCH] FUSE - core")
Cc: <stable@vger.kernel.org> # v2.6.14
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/readdir.c')
| -rw-r--r-- | fs/fuse/readdir.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fuse/readdir.c b/fs/fuse/readdir.c index 5c38b9d84c6e..6a40f75a0d25 100644 --- a/fs/fuse/readdir.c +++ b/fs/fuse/readdir.c @@ -184,7 +184,7 @@ static int fuse_direntplus_link(struct file *file, if (invalid_nodeid(o->nodeid)) return -EIO; - if (!fuse_valid_type(o->attr.mode)) + if (fuse_invalid_attr(&o->attr)) return -EIO; fc = get_fuse_conn(dir); |