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Message-ID: <201601150357.7KjURjcS%fengguang.wu@intel.com>
Date: Fri, 15 Jan 2016 03:19:29 +0800
From: kbuild test robot <lkp@...el.com>
To: Nikhilesh Reddy <reddyn@...eaurora.org>
Cc: kbuild-all@...org, Miklos Szeredi <miklos@...redi.hu>,
fuse-devel <fuse-devel@...ts.sourceforge.net>,
linux-kernel@...r.kernel.org, linux-api@...r.kernel.org,
Greg KH <gregkh@...uxfoundation.org>,
torvalds@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
viro@...iv.linux.org.uk, Richard Weinberger <richard@....at>,
Theodore Ts'o <tytso@....edu>, jack@...e.cz,
Antonio SJ Musumeci <trapexit@...wn.link>, sven.utcke@....de,
Nikolaus Rath <nikolaus@...h.org>
Subject: Re: [PATCH v2 fixed line wrap mangling] fuse: Add support for fuse
stacked I/O
Hi Nikhilesh,
[auto build test WARNING on v4.4-rc8]
[also build test WARNING on next-20160114]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Nikhilesh-Reddy/fuse-Add-support-for-fuse-stacked-I-O/20160115-030449
config: i386-randconfig-x005-01140835 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings
All warnings (new ones prefixed by >>):
fs/fuse/file.c: In function 'fuse_do_open':
>> fs/fuse/file.c:148:22: warning: 'lower_file' may be used uninitialized in this function [-Wmaybe-uninitialized]
ff->rw_lower_file = lower_file;
^
vim +/lower_file +148 fs/fuse/file.c
132
133 ff = fuse_file_alloc(fc);
134 if (!ff)
135 return -ENOMEM;
136
137 ff->fh = 0;
138 ff->open_flags = FOPEN_KEEP_CACHE; /* Default for no-open */
139 if (!fc->no_open || isdir) {
140 struct fuse_open_out outarg;
141 int err;
142
143 err = fuse_send_open(fc, nodeid, file, opcode, &outarg,
144 &(lower_file));
145 if (!err) {
146 ff->fh = outarg.fh;
147 ff->open_flags = outarg.open_flags;
> 148 ff->rw_lower_file = lower_file;
149
150 } else if (err != -ENOSYS || isdir) {
151 fuse_file_free(ff);
152 return err;
153 } else {
154 fc->no_open = 1;
155 }
156 }
---
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