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authorMiklos Szeredi <mszeredi@redhat.com>2019-11-12 13:49:04 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2019-11-12 13:49:04 +0300
commiteb59bd17d2fa6e5e84fba61a5ebdea984222e6d5 (patch)
treea644b87e95b4245db9a2a716f56e54fe8b82179c /fs/fuse/readdir.c
parent31f4f5b495a62c9a8b15b1c3581acd5efeb9af8c (diff)
downloadlinux-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.c2
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);