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bh=mVB81BLw9e8pI0LFuv8F5wk+xRrUzasyGcCmn0hk9cM=; b=DAoCEjSJZi3XHJQuPl4sC7NpdJKF08cXQV2gtnTVS4sQ3osQAiozBglaZLb3VIYq8EBW2q jsrOcFN3kwkOWb1bdausa7Zl++qp16NeyNszUtyej0ZAzZ3yFHiNN9dBm9ZKmcDxqaRBBr swBhNrKBu3V7MpMTts9FyYMUhCaxkfs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1790679877; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mVB81BLw9e8pI0LFuv8F5wk+xRrUzasyGcCmn0hk9cM=; b=k9MjFREvLNHETRZXt0zkUsT+7iVyUczGr2yjb9kHRBteDsCDwQx92Y5iyiRAbW5aoEmGWH 5rTInQwDrUsr2sDQ== Date: Tue, 29 Sep 2026 13:04:35 +0200 From: Michal =?iso-8859-1?Q?Such=E1nek?= To: linuxppc-dev , kvm-ppc@vger.kernel.org Subject: Re: early boot crash in init_tracer_tracefs Message-ID: References: <20260928111234.faec09f7-8d-amachhiw@linux.ibm.com> <20260929093245.00008c9b-10-amachhiw@linux.ibm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260929093245.00008c9b-10-amachhiw@linux.ibm.com> X-Rspamd-Action: no action X-Spamd-Result: default: False [4.05 / 50.00]; BAYES_HAM(-3.00)[100.00%]; HFILTER_HOSTNAME_UNKNOWN(2.50)[]; RDNS_NONE(2.00)[]; ONCE_RECEIVED(1.20)[]; HFILTER_HELO_IP_A(1.00)[kunlun.suse.cz]; R_MIXED_CHARSET(0.56)[subject]; HFILTER_HELO_NORES_A_OR_MX(0.30)[kunlun.suse.cz]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.19)[-0.972]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; TO_DN_SOME(0.00)[]; ARC_NA(0.00)[]; MISSING_XM_UA(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_ZERO(0.00)[0]; SPAMHAUS_XBL(0.00)[2a07:de40:b306:2000::2:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,kunlun.suse.cz:helo,kunlun.suse.cz:mid]; FROM_HAS_DN(0.00)[]; DNSWL_BLOCKED(0.00)[2a07:de40:b306:2000::2:from]; RCPT_COUNT_TWO(0.00)[2]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DKIM_TRACE(0.00)[suse.de:+] X-Spamd-Bar: ++++ X-Rspamd-Queue-Id: 075AD21D8D X-Rspamd-Server: rspamd1.dmz-prg2.suse.org On Tue, Sep 29, 2026 at 09:36:05AM +0530, Amit Machhiwal wrote: > On 2026/09/28 11:43 AM, Amit Machhiwal wrote: > > Hi Michal, > > > > Thanks for the report. We have been looking at the crash and have some findings > > and follow-up questions. > > > > On 2026/09/25 10:10 AM, Michal Suchánek wrote: > > > Hello, > > > > > > There appears to be a regression between > > < snip > > > > > > > > Linux 7.0.12 > > > https://github.com/openSUSE/kernel/tree/4c9922875554ec191166ba6c0145f12d8ff9d4fc > > > https://github.com/openSUSE/kernel-source/blob/2ebf0bc/config/ppc64le/default > > I have been trying to recreate the issue with this kernel and config but I > haven't been able to. The L2 KVM guest boots fine everytime. > > In addition to the requested information, could you please also share your qemu > cmdline/guest xml you used? The XML of the VM is below. What other information do you require? Thanks Michal kwork2 6b72d912-3243-48af-8cb2-b61f04b93ff2 260000000 260000000 120 hvm POWER11 destroy restart destroy /usr/bin/qemu-system-ppc64