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Tue, 03 Feb 2026 06:44:57 -0800 (PST) Date: Tue, 3 Feb 2026 17:44:54 +0300 From: Dan Carpenter To: Balbir Singh Cc: oe-kbuild@lists.linux.dev, Alistair Popple , lkp@intel.com, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Andrew Morton , Linux Memory Management List , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Jason Gunthorpe Subject: Re: lib/test_hmm.c:932 dmirror_migrate_to_system() error: uninitialized symbol 'ret'. Message-ID: References: <202601152125.McLpiKxS-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 10C6A1A0002 X-Stat-Signature: a4amm4e41gib883bjd78kjnsuj4ptogb X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1770129899-887098 X-HE-Meta: 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 vF2uGPZJ +848Hi4Z1Q60VURd2y8ynOe9BgEUsX/kvNDDPSEv0maeqVV4E2LL+Ef/xyqkaYv34c4eKmPN1IY4PohnKi5+ZSqHEKdp5mEadbctpsm12hmEnnooKoc+/Gls/PNGkk7RaljTuBijzL8cNWbdMXjxhvjXgEAdoTWks1MBPC+xyquyIdDhyhPm1LOTnc5ob20enkdhHRPpHz2T5EtZztKdDWHhel8U+CDORdzQ0YhoRgmMwy272QdmSC/1Z7lUob/UarnHEtPgu+NICipgY/tB9jOgFu798wqK8UWXQpHbGJQ+CHrJ8LNWv4RDeHOs5EiSUNcGMIHYaBf58OnLiHK2MednTVoX6/Gg04GJTFrhBdr8Psa0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Feb 03, 2026 at 09:34:40PM +1100, Balbir Singh wrote: > > 4c2e0f764eb4444 Alex Sierra 2022-07-15 928 out: > > 4c2e0f764eb4444 Alex Sierra 2022-07-15 929 mmap_read_unlock(mm); > > 4c2e0f764eb4444 Alex Sierra 2022-07-15 930 mmput(mm); > > 4c2e0f764eb4444 Alex Sierra 2022-07-15 931 > > 4c2e0f764eb4444 Alex Sierra 2022-07-15 @932 return ret; > > 4c2e0f764eb4444 Alex Sierra 2022-07-15 933 } > > > > The code looks older than the current top of master? The smatch warning is still valid though. I was wondering > did smatch get new heuristics to catch this? Sorry, I can't explain what happened here. I had seen the warning before years ago and not reported it. :( I don't know why the zero-day bot is only complaining now though, or why it blames that specific commit. regards, dan carpenter