From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 26 May 2021 22:32:40 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lm0Cm-0004gd-GC for lore@lore.pengutronix.de; Wed, 26 May 2021 22:32:40 +0200 Received: from localhost ([127.0.0.1] helo=metis.ext.pengutronix.de) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1lm0Cl-0002FW-WA; Wed, 26 May 2021 22:32:40 +0200 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lm0CB-0002FO-Do for ptxdist@pengutronix.de; Wed, 26 May 2021 22:32:03 +0200 Received: from rhi by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lm0CB-0003gN-4G for ptxdist@pengutronix.de; Wed, 26 May 2021 22:32:03 +0200 Date: Wed, 26 May 2021 22:32:03 +0200 From: Roland Hieber To: ptxdist@pengutronix.de Message-ID: <20210526203203.oek2owdhx2y3xp56@pengutronix.de> References: <20210526093156.GD28754@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210526093156.GD28754@pengutronix.de> User-Agent: NeoMutt/20180716 Subject: Re: [ptxdist] Regenerating debug files for debugging a core dump X-BeenThere: ptxdist@pengutronix.de X-Mailman-Version: 2.1.29 Precedence: list List-Id: PTXdist Development Mailing List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: ptxdist@pengutronix.de Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ptxdist" X-SA-Exim-Connect-IP: 127.0.0.1 X-SA-Exim-Mail-From: ptxdist-bounces@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false On Wed, May 26, 2021 at 11:31:56AM +0200, Michael Olbrich wrote: > Hi, > > On Tue, May 25, 2021 at 04:43:54PM +0200, Guillermo Rodriguez Garcia wrote: > > I am trying to debug a core dump from a system based on ptxdist-2018.05.0. > > > > I see that the debug symbols are generated in > > platform-xxx/root/usr/lib/debug. > > > > The thing is that I don't have the original debug files anymore. > > If I regenerate the root fs and everything else from the same sources > > (ptxdist clean + ptxdist go), will the generated debug files be valid for > > debugging the core dump? > > It may or may not work. PTXdist tries to make builds reproducible. But > there are cases where it does not work and the resulting binaries are > different. > So it's worth a try if you don't have the debug files any more, but it's > better to keep them to avoid relying on this. Hmm, if the package does not build reproducibly, its build ID will change, so gdb won't find the debug symbols automatically. But does that also mean that the debug symbols cannot be loaded into gdb manually? If the BSP was built from exactly the same sources (even without reproducibility) most other data layouts, file names and line numbers should still be the same, right? - Roland -- Roland Hieber, Pengutronix e.K. | r.hieber@pengutronix.de | Steuerwalder Str. 21 | https://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ ptxdist mailing list ptxdist@pengutronix.de To unsubscribe, send a mail with subject "unsubscribe" to ptxdist-request@pengutronix.de