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fuse: prevent fuse_put_request on invalid pointer

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fuse_direct_io() has a loop where requests are allocated in each
iteration. if allocation fails, the loop is broken out and follows
into an unconditional fuse_put_request() on that invalid pointer.

Signed-off-by: Anand V. Avati <avati@gluster.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: stable@kernel.org
This commit is contained in:
Anand V. Avati 2009-10-22 06:24:52 -07:00 committed by Miklos Szeredi
parent b419148e56
commit f60311d5f7
1 changed files with 2 additions and 1 deletions
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3
fs/fuse/file.c
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@ -1063,7 +1063,8 @@ ssize_t fuse_direct_io(struct file *file, const char __user *buf,
break;
}
}
fuse_put_request(fc, req);
if (!IS_ERR(req))
fuse_put_request(fc, req);
if (res > 0)
*ppos = pos;