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Tsirkin" To: Lei Yang Cc: syzbot , jasowang@redhat.com, linux-kernel@vger.kernel.org, linux-next@vger.kernel.org, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com, virtualization@lists.linux.dev, xuanzhuo@linux.alibaba.com, Andrew Morton , linux-mm@kvack.org Subject: Re: [syzbot] [virtualization?] linux-next boot error: WARNING: refcount bug in __free_pages_ok Message-ID: <20240222103932-mutt-send-email-mst@kernel.org> References: <000000000000d305050611b50d09@google.com> <20240219022853-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Stat-Signature: nr8dqcgb1duh8rmjza6f9t35tsjbq3fn X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 5FC3C1C0008 X-Rspam-User: X-HE-Tag: 1708616495-928613 X-HE-Meta: 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 7EuIaybu 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 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 Thu, Feb 22, 2024 at 11:06:55AM +0800, Lei Yang wrote: > Hi All > > I hit a similar issue when doing a regression testing from my side. > For the error messages please help review the attachment. > > The latest commit: > commit c02197fc9076e7d991c8f6adc11759c5ba52ddc6 (HEAD -> master, > origin/master, origin/HEAD) > Merge: f2667e0c3240 0846dd77c834 > Author: Linus Torvalds > Date: Sat Feb 17 16:59:31 2024 -0800 > > Merge tag 'powerpc-6.8-3' of > git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux > > Pull powerpc fixes from Michael Ellerman: > "This is a bit of a big batch for rc4, but just due to holiday hangover > and because I didn't send any fixes last week due to a late revert > request. I think next week should be back to normal. > > Regards > Lei It all looks like a generic bug dealing with some refcounting in the allocator. So, a chance of a bisect there? -- MST