From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 49DA3153BED; Wed, 20 Nov 2024 16:43:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732120987; cv=none; b=kKOdCi9pwLa/WMto0mThubF0StmA32zSqzQM/8qHLtTzCJrzXtoBNyqVKmmsbyc6e17ZTYIPoNNrXNUxrhtsv7gp0Lk5X94fZVj6eLT/iac/C9yw4PmgZw1x27/22Td+2/y1zRPaEO9orT9zkyCJeG+uc39ZV2aV6rd6YW5ybNE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732120987; c=relaxed/simple; bh=VoKLmbRrI7wCnPyJA/0lO81/9Rgx94RGC1msUcc1qss=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DLNjSeIkIuxL5GUdG3gkegohwNHdt22b8f9Wtxozvdoj+OOLVo0gW3krtNPBDM0DNzF9yNU/FDFb1TpyuOcGiZEYpyjorLn8Muh6BTsxfo2suoKlL5P/XIYM6YTycv4r+nCsGxV7hBdOWsdByEGk8Q0Vjw2YBYQWtdgoUhMSwfM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF736C4CECD; Wed, 20 Nov 2024 16:43:05 +0000 (UTC) Date: Wed, 20 Nov 2024 11:43:41 -0500 From: Steven Rostedt To: Jean-Michel Hautbois Cc: linux-m68k@lists.linux-m68k.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Geert Uytterhoeven , Greg Ungerer , Tomas Glozar Subject: Re: [PATCH RFC 0/2] Add basic tracing support for m68k Message-ID: <20241120114341.30ac73c6@gandalf.local.home> In-Reply-To: <2dc1cdfa-d33a-48b6-ab77-d04b06a3efe8@yoseli.org> References: <20241021-add-m68k-tracing-support-v1-0-0883d704525b@yoseli.org> <3a8f6faa-62c6-4d32-b544-3fb7c00730d7@yoseli.org> <20241115102554.29232d34@gandalf.local.home> <20241115145502.631c9a2c@gandalf.local.home> <2c43288a-517d-4220-ad31-f84dda8c1805@yoseli.org> <20241118152057.13042840@gandalf.local.home> <22856ed6-b9d0-4206-b88d-4226534c8675@yoseli.org> <20241119102631.76363f2a@gandalf.local.home> <20241119112850.219834f5@gandalf.local.home> <20241119131035.3c42a533@gandalf.local.home> <66e2b7cd-4a4f-4f60-9846-a14c476bd050@yoseli.org> <20241120103150.3442d658@gandalf.local.home> <2dc1cdfa-d33a-48b6-ab77-d04b06a3efe8@yoseli.org> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Wed, 20 Nov 2024 16:59:55 +0100 Jean-Michel Hautbois wrote: > > And that way you will see what 'ptr' is before the crash. Or did you do > > that already? > > Yes, I did, sorry I thought it was in the previous dump :-(. Can you see if this makes a difference? Patch libtracefs: diff --git a/src/tracefs-events.c b/src/tracefs-events.c index 77d1ba89b038..19ea3b3f8d36 100644 --- a/src/tracefs-events.c +++ b/src/tracefs-events.c @@ -274,7 +274,7 @@ static int open_cpu_files(struct tracefs_instance *instance, cpu_set_t *cpus, if (snapshot) tcpu = tracefs_cpu_snapshot_open(instance, cpu, true); else - tcpu = tracefs_cpu_open_mapped(instance, cpu, true); + tcpu = tracefs_cpu_open(instance, cpu, true); if (!tcpu) goto error; -- Steve