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Mon, 02 Mar 2026 13:26:30 +0000 Date: Mon, 02 Mar 2026 13:26:30 +0000 Message-ID: <86wlzu8ird.wl-maz@kernel.org> From: Marc Zyngier To: Dmitry Vyukov Cc: syzbot , syzkaller@googlegroups.com, catalin.marinas@arm.com, joey.gouly@arm.com, kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, oupton@kernel.org, suzuki.poulose@arm.com, syzkaller-bugs@googlegroups.com, will@kernel.org, yuzenghui@huawei.com Subject: Re: [syzbot] [kvmarm?] [kvm?] BUG: unable to handle kernel paging request in kvm_vgic_destroy In-Reply-To: References: <69a2d58c.050a0220.3a55be.003b.GAE@google.com> <874in0ex49.wl-maz@kernel.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: dvyukov@google.com, syzbot+f6a46b038fc243ac0175@syzkaller.appspotmail.com, syzkaller@googlegroups.com, catalin.marinas@arm.com, joey.gouly@arm.com, kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, oupton@kernel.org, suzuki.poulose@arm.com, syzkaller-bugs@googlegroups.com, will@kernel.org, yuzenghui@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260302_052633_542974_95B4E951 X-CRM114-Status: GOOD ( 13.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Dmitry, On Mon, 02 Mar 2026 12:59:41 +0000, Dmitry Vyukov wrote: > > Hi Marc, > > The reproducer should print at the start specifically to address this concern: > > the reproducer may not work as expected: fault injection setup failed: > failed to write fault injection file > > Isn't it enough? Ah, I totally missed that, because things scroll really quickly... Apologies. I think it'd be a bit better to just stop the test if the preconditions are not met, as nothing useful will happen. Thanks, M. -- Without deviation from the norm, progress is not possible.