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| author | Miklos Szeredi <mszeredi@redhat.com> | 2019-11-12 11:49:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-13 08:42:31 +0100 |
| commit | cbc5b45148ea5eb0865cc2352c124c24c62f04ce (patch) | |
| tree | 21545814b273469bd9f5d421bf057d512df47746 /fs/fuse/fuse_i.h | |
| parent | 8aa5c23ef81ba86d8ddf2791cbe8db17f3d6bada (diff) | |
fuse: verify attributes
commit eb59bd17d2fa6e5e84fba61a5ebdea984222e6d5 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index d148188cfca4..aa75e2305b75 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -989,6 +989,8 @@ void fuse_ctl_remove_conn(struct fuse_conn *fc); */ int fuse_valid_type(int m); +bool fuse_invalid_attr(struct fuse_attr *attr); + /** * Is current process allowed to perform filesystem operation? */ |