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Thu, 27 Jul 2023 12:17:30 -0700 (PDT) Date: Thu, 27 Jul 2023 12:17:30 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cc767006017cd057@google.com> Subject: Re: [syzbot] [mm?] WARNING: suspicious RCU usage in mas_walk (2) From: syzbot To: akpm@linux-foundation.org, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: AF1D140013 X-Rspam-User: X-Rspamd-Server: rspam02 X-Stat-Signature: 4nukanchgpzs58ng87mzj9zicqhk8z76 X-HE-Tag: 1690485451-798307 X-HE-Meta: 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 WIEBRt5S 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 fghGGwt9 2MdF3HsSIzn75fBfd5R5jFNlYEawfyjDNZ6Rxqyjr5JtKNAvNZZ5Sjtvin18AQBu5I3hBPtnAnxOGkp3tlIne275L1fE6ZrQ2arcyQGKn9IaGvFtqOhI0mqiXVnssJCzI1ULb567OqJ4+CkDLx+Dshb1vzn1YGDfKM379sgdLaQ= 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: Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+8645fe63c4d22c8d27b8@syzkaller.appspotmail.com Tested on: commit: 451cc82b Add linux-next specific files for 20230727 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next next-20230727 console output: https://syzkaller.appspot.com/x/log.txt?x=120b5655a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=23e0802de3cfc61f dashboard link: https://syzkaller.appspot.com/bug?extid=8645fe63c4d22c8d27b8 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=12145a36a80000 Note: testing is done by a robot and is best-effort only.