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b=dlnIusNm7JiiK5MYJ5R+EFfeHMi9x8k5Xosd+TG1LASG2W8Y0rHcTMqs+0Vui+e9p QsRGbIcpBj5U09553O3+GQ8dXv10Ofu35Kkayy4Fd65sNT+NySe1NFqSELuw5fuW3N 8YeTjUVReHhLf68gl3HvCrFCoTwB3ViL2ui0hUBA= Date: Tue, 15 Jul 2025 17:08:52 -0700 From: Andrew Morton To: syzbot Cc: andrii@kernel.org, david@redhat.com, hdanton@sina.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, lorenzo.stoakes@oracle.com, surenb@google.com, syzkaller-bugs@googlegroups.com, linux-mm@kvack.org Subject: Re: [syzbot] [fs?] WARNING: bad unlock balance in query_matching_vma Message-Id: <20250715170852.e616b82a53a88e757ee342af@linux-foundation.org> In-Reply-To: <687628be.a00a0220.3af5df.0002.GAE@google.com> References: <68757288.a70a0220.5f69f.0003.GAE@google.com> <687628be.a00a0220.3af5df.0002.GAE@google.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 75B3B1A000F X-Stat-Signature: jij6dxrtixpwijk51rfcdi1ydge3gpgt X-HE-Tag: 1752624534-99227 X-HE-Meta: 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 A3XSq/M3 fOBWT9IRGl3Z13jM0YnJBfh58mpVXacsme/lDSmMM7eET1b9g4WoNiGAVLHKPM/kecdTBW5sC8agwevjrVLPNkmobZJIx7DyFpp+A707ShSjIwtEQ5jslWr+7ajeFdjaZ2WoPxJAS+xP4CEIjjKLhzSMPX0zrFXqBR+IBib0h3OZE8Nkk3JisExHqCLFekFn21mK2+K6obUqViJeLW5jOS125M1k+U7KiepBFTC4SRkCk7JhbugERNnnpVeiUqpoyxmhH0WsmZMlaxO68FU31co2JlxdZX3AA0Q6Ykg6XwgBantLGi6hkNyzl4ogzvZZtHMFzX9ZWMInbjUEa5lYO4bOMjGrr1VBrF+RnqnLD+OiflkJ18pwIlZc+s+jJSW2v/yEPK6clXKHit1RUpmUJJ8fOUTVhFAnLmpVs8ALYizliDwV5AbUbuCOAO/mT/Gd2VmQuoyzwZ03bufqkMdC4e24KJSnaoylN7RqpaWcMEF25RxbgnNjOfXvCUL9sWP75bkG4i56eN14UwgPjrXIAJ6sxjTKExJAQsEy8KhUyg+/D9lm4FQrD84L+rJXd+5bDR3+kwe08KT1EYofwOx0AuCO3KDbRHtAZv0mpb1jNFgLzKcht8zyfwSXrjQZQkJfen0sICRDkL38bsTk1GOT5uoJS/lQbZZkQd81//Zr/CHH2zIDQ4+xFINb2Jf4KsYDwPGACjpZOEBMWiq8wXAILKKO4E6qprQ5Oy3Gp9LPxNGC6QV5/FsYP3PSoHexAyFyRahCgaXgLVTy/FKedMJfkubQPj9Jo1ptXMcnqYVGNpNpiuOcUwZj5K3E92c2lQNdJl5c/nCzCXsCy0GgFKd3UC/30I2ZX+2062w6sCOW6qUOS+cJaTCuGDWJPJg== 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, 15 Jul 2025 03:09:02 -0700 syzbot wrote: > syzbot has bisected this issue to: > > commit fb8a9ee1f05345b1fae37902d32d954d2150437b > Author: Suren Baghdasaryan > Date: Fri Jul 4 06:07:26 2025 +0000 > > fs/proc/task_mmu: execute PROCMAP_QUERY ioctl under per-vma locks > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=171c27d4580000 > start commit: a62b7a37e6fc Add linux-next specific files for 20250711 > git tree: linux-next > final oops: https://syzkaller.appspot.com/x/report.txt?x=149c27d4580000 > console output: https://syzkaller.appspot.com/x/log.txt?x=109c27d4580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=bb4e3ec360fcbd0f > dashboard link: https://syzkaller.appspot.com/bug?extid=d4316c39e84f412115c9 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14ad50f0580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1173018c580000 > > Reported-by: syzbot+d4316c39e84f412115c9@syzkaller.appspotmail.com Thanks. This email (and the original bug report) lacked a cc:linux-mm@kvack.org. > Fixes: fb8a9ee1f053 ("fs/proc/task_mmu: execute PROCMAP_QUERY ioctl under per-vma locks") Could I suggest that your scripts be altered to parse the fb8a9ee1f053 changelog for its Link:, fetch the submitter's original email and from that, figure out which mailing list(s) were cc'ed? > For information about bisection process see: https://goo.gl/tpsmEJ#bisection Suren, I'll drop the v6 series from mm-new. Links which I have accumulated are: https://lkml.kernel.org/r/6871f94b.a00a0220.26a83e.0070.GAE@google.com https://lkml.kernel.org/r/f532558b-b19a-40ea-b594-94d1ba92188d@lucifer.local https://lkml.kernel.org/r/687628be.a00a0220.3af5df.0002.GAE@google.com https://lkml.kernel.org/r/687628be.a00a0220.3af5df.0002.GAE@google.com