From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 52619 invoked by alias); 5 Nov 2019 04:05:50 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Received: (qmail 52606 invoked by uid 89); 5 Nov 2019 04:05:50 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=0.0 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,HTML_MESSAGE,KAM_LOTSOFHASH,KAM_SHORT,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=no version=3.3.1 spammy=Packet, $qtstatus, qsupported, S05 X-HELO: mail-oi1-f175.google.com Received: from mail-oi1-f175.google.com (HELO mail-oi1-f175.google.com) (209.85.167.175) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 05 Nov 2019 04:05:47 +0000 Received: by mail-oi1-f175.google.com with SMTP id s71so16275389oih.11 for ; Mon, 04 Nov 2019 20:05:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=U50UjCuzhPwTpqjfzr0DwMD+asMTKNe5rc2N8pjr5No=; b=PtS+BRjjUM3zdYmWGDdkJ/ZvESBI8VKK3ikD8T7EDy73/yTqZzHykAQZ5xVyNY0emj xLtg2KLgv9DsQgAgk6tt4NlFy8OohJlL+iR7qn8ZJmZiuQoOQYF2X/ooRupkYGIseB8s Nwoc5oHok6EgUPPFAog88EPcKl8IHgoxzG26OMmZBAew7n6pFzxcBUG+FFO/O2rNUMEd MrYNbHI0iivSWk6qA0qQInqlS7C39st2kPzU+a9+EYrgLRQ1pJtQQEA4dx5iAafLWuUG j6I2MHVi5KtbxPdyVRLiXFvWds7OQLIglu6a4wU2R8wKlwVJ2ERN0XvuJ5ukgoafsikW lU2w== MIME-Version: 1.0 References: <5c9d0ab7-4e03-ea43-ae54-5d2aed0728e0@linaro.org> <0d7d8ede-1cae-c0cc-be35-05443dc5f073@linaro.org> <1b1ebf11-3e2c-d5b3-6a5b-50ed54e791bc@linaro.org> In-Reply-To: From: Reinoud Koornstra Date: Tue, 05 Nov 2019 04:05:00 -0000 Message-ID: Subject: Re: gdb 8.3.1 truncated register in remote g packet To: Luis Machado Cc: gdb@sourceware.org Content-Type: text/plain; charset="UTF-8" X-SW-Source: 2019-11/txt/msg00012.txt.bz2 I tried to submit a bug, but it said the info output from gdb I'm trying to attach is spam and now my account is locked due to spam?....... Without pasting the gdb output this case doesn't have the info it needs, but the system thinks it's spam Thanks, Reinoud. On Mon, Nov 4, 2019 at 4:50 PM Luis Machado wrote: > Hi Reinoud, > > On 11/4/19 2:52 PM, Reinoud Koornstra wrote: > > > > You might have gotten lucky. Or GDB wasn't too restrictive on the > > checks. > > > > > > True > > > > > > > > > > Just to confirm, does your arm target have floating point > > registers? > > > > > > Good point, I did assume it has, because in some cases armeabihf > was > > > used to compile, but not in all cases, I'll check whether it is, > > > otherwise I'd have to recompile gdb without hf. > > > I'll get the info and let you know, thanks for helping out! > > > > > > Yes, the arm cpu used has floating point registers > > > > > > Well, it seems GDB assumes floating point registers are there by > > default, so there wouldn't be a need to build GDB specifically for > that. > > > > > > I did compile a gdb 7.7.1, i compiled earlier 7.0 (failed to compile > > without removing Werror in bfd directory Makefile...), then I tried > > 7.4.1, but both of these versions didn't support remote baud rate. > > However 7.7.1 worked nicely, well way better: (I did go echo g > > > /proc/sysrq-trigger to get it waiting for gdb). > > This indicates something might have changed that made newer GDB's grumpy > at your kgdb instance. > > Would you mind opening a ticket here (https://sourceware.org/bugzilla/) > so we can track this properly? I'll do some more investigation. > > If you don't have an account i can do it for you, from information we > exchanged through e-mail. > > > GNU gdb (GDB) 7.7.1 > > Copyright (C) 2014 Free Software Foundation, Inc. > > License GPLv3+: GNU GPL version 3 or later > > > > This is free software: you are free to change and redistribute it. > > There is NO WARRANTY, to the extent permitted by law. Type "show > copying" > > and "show warranty" for details. > > This GDB was configured as "--host=x86_64-unknown-linux-gnu > > --target=arm-linux-gnueabihf". > > Type "show configuration" for configuration details. > > For bug reporting instructions, please see: > > . > > Find the GDB manual and other documentation resources online at: > > . > > For help, type "help". > > Type "apropos word" to search for commands related to "word"... > > Reading symbols from ./vmlinux...done. > > (gdb) set serial baud 115200 > > (gdb) set debug remote 1 > > (gdb) target remote /dev/ttyUSB4 > > Remote debugging using /dev/ttyUSB4 > > Sending packet: $qSupported:multiprocess+;qRelocInsn+#2a...Ack > > Packet received: > > Packet qSupported (supported-packets) is NOT supported > > Sending packet: $Hg0#df...Ack > > Packet received: OK > > Sending packet: $qTStatus#49...Ack > > Packet received: > > Packet qTStatus (trace-status) is NOT supported > > Sending packet: $?#3f...Ack > > Packet received: S05 > > Sending packet: $Hc-1#09...Ack > > Packet received: OK > > Sending packet: $qC#b4...Ack > > Packet received: QC1fbb > > Sending packet: $qAttached#8f...Ack > > Packet received: > > Packet qAttached (query-attached) is NOT supported > > Sending packet: $qOffsets#4b...Ack > > Packet received: > > Sending packet: $g#67...Ack > > Packet received: > > > 0000000001000000b0829e80ac829e8054829880b4a698806700000013000060060000000000000000000000cc5e0bbfd05e0bbfc05e0bbf10200a80581f0a8000000000000000000000000000000000000000000000000000000000000000000000000000000000 > > Sending packet: $m800a1f58,4#ca...Ack > > Packet received: ffdeffe7 > > Sending packet: $m800a1f54,4#c6...Ack > > Packet received: 4ef07ff5 > > Sending packet: $m800a1f58,4#ca...Ack > > Packet received: ffdeffe7 > > Sending packet: $m800a1f54,4#c6...Ack > > Packet received: 4ef07ff5 > > Sending packet: $m800a1f58,4#ca...Ack > > Packet received: ffdeffe7 > > Sending packet: $m800a1f54,4#c6...Ack > > Packet received: 4ef07ff5 > > Sending packet: $m800a1f58,4#ca...Ack > > Packet received: ffdeffe7 > > Sending packet: $m800a1f54,4#c6...Ack > > Packet received: 4ef07ff5 > > Sending packet: $m800a1f58,4#ca...Ack > > Packet received: ffdeffe7 > > Sending packet: $m800a1f58,4#ca...Ack > > Packet received: ffdeffe7 > > Sending packet: $m800a1f58,4#ca...Ack > > Packet received: ffdeffe7 > > 0x800a1f58 in arch_kgdb_breakpoint () at kernel/debug/debug_core.c:1049 > > 1049 kernel/debug/debug_core.c: No such file or directory. > > Sending packet: $qSymbol::#5b...Ack > > Packet received: > > Packet qSymbol (symbol-lookup) is NOT supported > > (gdb) set debug remote 0 > > (gdb) bt full > > #0 0x800a1f58 in arch_kgdb_breakpoint () at > kernel/debug/debug_core.c:1049 > > No locals. > > #1 kgdb_breakpoint () at kernel/debug/debug_core.c:1050 > > No locals. > > #2 0x800a2010 in sysrq_handle_dbg (key=0) at > kernel/debug/debug_core.c:810 > > No locals. > > #3 0x80367308 in __handle_sysrq (key=103, check_mask=false) at > > drivers/tty/sysrq.c:535 > > op_p = 0x8098a6b4 > > orig_log_level = 6 > > i = -2137479500 > > flags = 1610612755 > > #4 0x8036745c in write_sysrq_trigger (file=0x0 <__vectors_start>, > > buf=0x1 <__vectors_start> , > > count=2, ppos=0x809e82ac ) at drivers/tty/sysrq.c:1083 > > No locals. > > #5 0x80177e18 in proc_reg_write (file=0x0 <__vectors_start>, buf=0x1 > > <__vectors_start> , > > count=2157871792, ppos=0xbf0b5f78) at fs/proc/inode.c:224 > > write = 0xbf0b5ed0 > > rv = 0 > > #6 0x8011fba4 in vfs_write (file=0xbe37bcc0, buf=0xaa408 > > "g\nyS0,115200\n", '\337' , > \337>..., count=2157871792, pos=0xbf0b5f78) at fs/read_write.c:485 > > No locals. > > #7 0x801201d4 in SYSC_write (count=, buf= > out>, fd=) at fs/read_write.c:534 > > pos = 0 > > #8 SyS_write (fd=0, buf=697352, count=2) at fs/read_write.c:526 > > ret = 0 > > #9 0x8000f760 in ?? () > > No symbol table info available. > > Backtrace stopped: previous frame identical to this frame (corrupt > stack?) >