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Tue, 01 Sep 2026 00:55:03 -0700 (PDT) Date: Tue, 01 Sep 2026 00:55:03 -0700 In-Reply-To: <20260901014242.417011-1-junjie.cao@intel.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a9684d7.2d75a5c4.15ddf4.0003.GAE@google.com> Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in sys_munmap (2) From: syzbot To: akpm@linux-foundation.org, bigeasy@linutronix.de, davem@davemloft.net, david@kernel.org, edumazet@google.com, harry.yoo@oracle.com, horms@kernel.org, jannh@google.com, jhs@mojatatu.com, jiri@resnulli.us, jpoimboe@kernel.org, junjie.cao@intel.com, kuba@kernel.org, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, pabeni@redhat.com, peterz@infradead.org, pfalcato@suse.de, riel@surriel.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz, vinicius.gomes@intel.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Stat-Signature: 8iyrbhcdwhp4dyjiqpapcje7kjej7z1a X-Rspamd-Queue-Id: 8943218000A X-Rspamd-Server: rspam06 X-HE-Tag: 1788249304-352132 X-HE-Meta: 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 /nzd+Vhd 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 y4CnOZc+ /jnwHlZqE/Lr0OLbu7ny57ibHIV5RmT9L/XkirEv6gz1JIGkyVi+pfwOpJemxJtsSY8yQicLRoigzaUVPoZuc6gCe+sasZyE8o5ELnKQ9N80Ni5HM2x10xO8LfIDOSlAAGNxShWu1IWq3pjQqD4eXXIP1DtniMphKhfRTXTPFLPBZILIMoBcONLtK7lRls3o Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by: syzbot+8785aaf121cfb2141e0d@syzkaller.appspotmail.com Tested-by: syzbot+8785aaf121cfb2141e0d@syzkaller.appspotmail.com Tested on: commit: abdf623d Merge tag 'wq-for-7.3-rc1-fixes' of git://git.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=15b33b79580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9cc692b98d9b4fdb dashboard link: https://syzkaller.appspot.com/bug?extid=8785aaf121cfb2141e0d compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=100b3379580000 Note: testing is done by a robot and is best-effort only.