From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-yw0-f176.google.com ([209.85.161.176]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1bala6-00049Q-Rl for kexec@lists.infradead.org; Fri, 19 Aug 2016 15:19:41 +0000 Received: by mail-yw0-f176.google.com with SMTP id j12so14612803ywb.2 for ; Fri, 19 Aug 2016 08:19:18 -0700 (PDT) Date: Fri, 19 Aug 2016 20:49:13 +0530 From: Pratyush Anand Subject: Re: [PATCH] fixup! arm64: kdump: add kdump support Message-ID: <20160819151913.GC22221@localhost.localdomain> References: <57B2E759.201@arm.com> <1471448011-20386-1-git-send-email-james.morse@arm.com> <20160819080020.GA584@localhost.localdomain> <57B70AF8.1000603@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <57B70AF8.1000603@arm.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: James Morse Cc: mark.rutland@arm.com, geoff@infradead.org, catalin.marinas@arm.com, will.deacon@arm.com, AKASHI Takahiro , bauerman@linux.vnet.ibm.com, dyoung@redhat.com, kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org On 19/08/2016:02:34:48 PM, James Morse wrote: > On 19/08/16 09:00, Pratyush Anand wrote: > > On 17/08/2016:04:33:31 PM, James Morse wrote: > >> copy_oldmem_page() and mmap_vmcore() provide two ways for userspace to read > >> from /proc/vmcore. Neither of these check with memblock to see if the page > >> they are accessing is nomap. On Seattle this causes: > > > > Thanks for the patch.It did resolve the kernel crash issue with makedumpfile, > > however neither there was any data in vmcore-dmesg nor crash utility was able to > > work the saved vmcore. > > vmcore-dmesg doesn't work for me, but crash did once I'd rebuilt it from the > most recent source. Yes, saved vmcore worked with latest crash. However, we will need to correct phys_offset and page_offset in kexec-tools to get meaningful output from vmcore-dmesg. ~Pratyush > > The most recent commit I have is: > b349598bb755 ("Fix for the ARM64 "bt -R " option if the only reference") > > Are you using an older version? > > > Thanks, > > James > > > [0] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/447597.html _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec From mboxrd@z Thu Jan 1 00:00:00 1970 From: panand@redhat.com (Pratyush Anand) Date: Fri, 19 Aug 2016 20:49:13 +0530 Subject: [PATCH] fixup! arm64: kdump: add kdump support In-Reply-To: <57B70AF8.1000603@arm.com> References: <57B2E759.201@arm.com> <1471448011-20386-1-git-send-email-james.morse@arm.com> <20160819080020.GA584@localhost.localdomain> <57B70AF8.1000603@arm.com> Message-ID: <20160819151913.GC22221@localhost.localdomain> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 19/08/2016:02:34:48 PM, James Morse wrote: > On 19/08/16 09:00, Pratyush Anand wrote: > > On 17/08/2016:04:33:31 PM, James Morse wrote: > >> copy_oldmem_page() and mmap_vmcore() provide two ways for userspace to read > >> from /proc/vmcore. Neither of these check with memblock to see if the page > >> they are accessing is nomap. On Seattle this causes: > > > > Thanks for the patch.It did resolve the kernel crash issue with makedumpfile, > > however neither there was any data in vmcore-dmesg nor crash utility was able to > > work the saved vmcore. > > vmcore-dmesg doesn't work for me, but crash did once I'd rebuilt it from the > most recent source. Yes, saved vmcore worked with latest crash. However, we will need to correct phys_offset and page_offset in kexec-tools to get meaningful output from vmcore-dmesg. ~Pratyush > > The most recent commit I have is: > b349598bb755 ("Fix for the ARM64 "bt -R " option if the only reference") > > Are you using an older version? > > > Thanks, > > James > > > [0] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/447597.html