From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42626) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ve5s7-0008Ac-Bm for qemu-devel@nongnu.org; Wed, 06 Nov 2013 11:22:29 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ve5s0-0000Hi-KK for qemu-devel@nongnu.org; Wed, 06 Nov 2013 11:22:23 -0500 Received: from mx1.redhat.com ([209.132.183.28]:37118) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ve5s0-0000HI-D3 for qemu-devel@nongnu.org; Wed, 06 Nov 2013 11:22:16 -0500 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id rA6GMF22027544 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 6 Nov 2013 11:22:15 -0500 Date: Wed, 6 Nov 2013 11:22:14 -0500 From: Luiz Capitulino Message-ID: <20131106112214.14a448b6@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] BUG: QEMU aborts when setting breakpoint in gdb (bisected) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: marcel.a@redhat.com Cc: qemu-devel , mst@redhat.com 1. Run qemu with gdb server support # qemu [...] -s -S 2. Connect gdb and try to set a breakpoint $ gdb /path/to/vmlinux (gdb) target remote:1234 (gdb) b secondary_startup_64 3. On qemu terminal qemu-qmp: /home/lcapitulino/work/src/upstream/qmp-unstable/include/qemu/int128.h:22: int128_get64: Assertion `!a.hi' failed. Aborted (core dumped) According to bisect the culprit is: commit a53ae8e934cd54686875b5bcfc2f434244ee55d6 Author: Marcel Apfelbaum Date: Mon Sep 16 11:21:16 2013 +0300 hw/pci: partially handle pci master abort Backtrace: #0 0x00007fd7882c2a19 in raise () from /lib64/libc.so.6 #1 0x00007fd7882c4128 in abort () from /lib64/libc.so.6 #2 0x00007fd7882bb986 in __assert_fail_base () from /lib64/libc.so.6 #3 0x00007fd7882bba32 in __assert_fail () from /lib64/libc.so.6 #4 0x00007fd78b7402ff in int128_get64 (a=...) at /home/lcapitulino/work/src/upstream/qmp-unstable/include/qemu/int128.h:22 #5 address_space_translate_internal (d=, addr=18446744067283878160, xlat=0x7fff7c13f498, plen=0x7fff7c13f530, resolve_subpage=) at /home/lcapitulino/work/src/upstream/qmp-unstable/exec.c:263 #6 0x00007fd78b740d6c in address_space_translate (as=, as@entry=0x7fd78c0ad4c0 , addr=addr@entry=18446744071578845456, xlat=xlat@entry=0x7fff7c13f540, plen=plen@entry=0x7fff7c13f530, is_write=is_write@entry=false) at /home/lcapitulino/work/src/upstream/qmp-unstable/exec.c:277 #7 0x00007fd78b742dc7 in address_space_rw (as=as@entry=0x7fd78c0ad4c0 , addr=18446744071578845456, buf=buf@entry=0x7fff7c140620 "", len=len@entry=18, is_write=is_write@entry=false) at /home/lcapitulino/work/src/upstream/qmp-unstable/exec.c:1883 #8 0x00007fd78b744ac1 in cpu_physical_memory_rw (is_write=0, len=18, buf=0x7fff7c140620 "", addr=) at /home/lcapitulino/work/src/upstream/qmp-unstable/exec.c:1978 #9 cpu_memory_rw_debug (cpu=0x7fd78d63e320, addr=18446744071578845456, buf=0x7fff7c140620 "", len=, is_write=0) at /home/lcapitulino/work/src/upstream/qmp-unstable/exec.c:2573 #10 0x00007fd78b75594a in target_memory_rw_debug (is_write=false, len=18, buf=0x7fff7c140620 "", addr=18446744071578845456, cpu=0x7fd78d63e320) at /home/lcapitulino/work/src/upstream/qmp-unstable/gdbstub.c:52 #11 gdb_handle_packet (s=s@entry=0x7fd78d6a6350, line_buf=line_buf@entry=0x7fd78d6a636c "mffffffff81000110,12") at /home/lcapitulino/work/src/upstream/qmp-unstable/gdbstub.c:928 #12 0x00007fd78b7563f8 in gdb_read_byte (ch=55, s=0x7fd78d6a6350) at /home/lcapitulino/work/src/upstream/qmp-unstable/gdbstub.c:1402 #13 gdb_chr_receive (opaque=, buf=, size=) at /home/lcapitulino/work/src/upstream/qmp-unstable/gdbstub.c:1618 #14 0x00007fd78b6ef489 in qemu_chr_be_write (len=, buf=0x7fff7c141740 "$mffffffff81000110,12#b7s+;xmlRegisters=i386;qRelocInsn+#b5|\377\177", s=0x7fd78d9202c0) at /home/lcapitulino/work/src/upstream/qmp-unstable/qemu-char.c:165 #15 tcp_chr_read (chan=, cond=, opaque=0x7fd78d9202c0) at /home/lcapitulino/work/src/upstream/qmp-unstable/qemu-char.c:2487 #16 0x00007fd78ac02e06 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0 #17 0x00007fd78b6c01e8 in glib_pollfds_poll () at /home/lcapitulino/work/src/upstream/qmp-unstable/main-loop.c:189 #18 os_host_main_loop_wait (timeout=) at /home/lcapitulino/work/src/upstream/qmp-unstable/main-loop.c:234 #19 main_loop_wait (nonblocking=) at /home/lcapitulino/work/src/upstream/qmp-unstable/main-loop.c:483 #20 0x00007fd78b597418 in main_loop () at /home/lcapitulino/work/src/upstream/qmp-unstable/vl.c:2014 #21 main (argc=, argv=, envp=) at /home/lcapitulino/work/src/upstream/qmp-unstable/vl.c:4362