From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44759) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ehOxQ-0001m8-69 for qemu-devel@nongnu.org; Thu, 01 Feb 2018 19:13:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ehOvp-00009w-90 for qemu-devel@nongnu.org; Thu, 01 Feb 2018 19:11:23 -0500 Received: from mx1.redhat.com ([209.132.183.28]:55478) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ehOvo-00005b-Mp for qemu-devel@nongnu.org; Thu, 01 Feb 2018 19:10:16 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1EF984F1B2 for ; Fri, 2 Feb 2018 00:10:15 +0000 (UTC) References: <1516112253-14480-1-git-send-email-pbonzini@redhat.com> <1516112253-14480-18-git-send-email-pbonzini@redhat.com> <20180201170004.7287d079@w520.home> From: Paolo Bonzini Message-ID: <6affcea1-a56b-f518-8b4b-a196d5401e33@redhat.com> Date: Thu, 1 Feb 2018 19:10:06 -0500 MIME-Version: 1.0 In-Reply-To: <20180201170004.7287d079@w520.home> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [PULL 17/51] readline: add a free function List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alex Williamson , =?UTF-8?Q?Marc-Andr=c3=a9_Lureau?= Cc: qemu-devel@nongnu.org On 01/02/2018 19:00, Alex Williamson wrote: > On Tue, 16 Jan 2018 15:16:59 +0100 > Paolo Bonzini wrote: >=20 >> From: Marc-Andr=C3=A9 Lureau >> >> Fixes leaks such as: >> >> Direct leak of 2 byte(s) in 1 object(s) allocated from: >> #0 0x7eff58beb850 in malloc (/lib64/libasan.so.4+0xde850) >> #1 0x7eff57942f0c in g_malloc ../glib/gmem.c:94 >> #2 0x7eff579431cf in g_malloc_n ../glib/gmem.c:331 >> #3 0x7eff5795f6eb in g_strdup ../glib/gstrfuncs.c:363 >> #4 0x55db720f1d46 in readline_hist_add /home/elmarco/src/qq/util/r= eadline.c:258 >> #5 0x55db720f2d34 in readline_handle_byte /home/elmarco/src/qq/uti= l/readline.c:387 >> #6 0x55db71539d00 in monitor_read /home/elmarco/src/qq/monitor.c:3= 896 >> #7 0x55db71f9be35 in qemu_chr_be_write_impl /home/elmarco/src/qq/c= hardev/char.c:167 >> #8 0x55db71f9bed3 in qemu_chr_be_write /home/elmarco/src/qq/charde= v/char.c:179 >> #9 0x55db71fa013c in fd_chr_read /home/elmarco/src/qq/chardev/char= -fd.c:66 >> #10 0x55db71fe18a8 in qio_channel_fd_source_dispatch /home/elmarco= /src/qq/io/channel-watch.c:84 >> #11 0x7eff5793a90b in g_main_dispatch ../glib/gmain.c:3182 >> #12 0x7eff5793b7ac in g_main_context_dispatch ../glib/gmain.c:3847 >> #13 0x55db720af3bd in glib_pollfds_poll /home/elmarco/src/qq/util/= main-loop.c:214 >> #14 0x55db720af505 in os_host_main_loop_wait /home/elmarco/src/qq/= util/main-loop.c:261 >> #15 0x55db720af6d6 in main_loop_wait /home/elmarco/src/qq/util/mai= n-loop.c:515 >> #16 0x55db7184e0de in main_loop /home/elmarco/src/qq/vl.c:1995 >> #17 0x55db7185e956 in main /home/elmarco/src/qq/vl.c:4914 >> #18 0x7eff4ea17039 in __libc_start_main (/lib64/libc.so.6+0x21039) >> >> (while at it, use g_new0(ReadLineState), it's a bit easier to read) >> >> Signed-off-by: Marc-Andr=C3=A9 Lureau >> Reviewed-by: Dr. David Alan Gilbert >> Reviewed-by: Philippe Mathieu-Daud=C3=A9 >> Message-Id: <20180104160523.22995-11-marcandre.lureau@redhat.com> >> Signed-off-by: Paolo Bonzini >> --- >=20 > I'm having some trouble with this patch, using b05631954d6d: >=20 > # /usr/local/bin/qemu-system-x86_64 -m 1G -nodefaults -net none -monito= r stdio -serial none -parallel none -nographic=20 > QEMU 2.11.50 monitor - type 'help' for more information > (qemu) sys > system_powerdown system_reset system_wakeup =20 > (qemu) system_p # resulting in system_powerdown > (qemu) quit > Segmentation fault (core dumped) >=20 > gdb shows: >=20 > Thread 1 "qemu-system-x86" received signal SIGSEGV, Segmentation fault. > 0x00007f7d64d82927 in malloc () from /lib64/libc.so.6 > (gdb) bt > #0 0x00007f7d64d82927 in malloc () at /lib64/libc.so.6 > #1 0x00007f7d6ef68359 in g_malloc () at /lib64/libglib-2.0.so.0 > #2 0x00007f7d6ef83004 in g_strsplit () at /lib64/libglib-2.0.so.0 > #3 0x000055e5ac0d549d in container_get (root=3D0x55e5ad570ee0, path=3D= path@entry=3D0x55e5ac2fa0f8 "/chardevs") at qom/container.c:34 > #4 0x000055e5ac14d102 in get_chardevs_root () at chardev/char.c:43 > #5 0x000055e5ac14ec4d in qemu_chr_cleanup () at chardev/char.c:1107 > #6 0x000055e5abeff1c4 in main (argc=3D, argv=3D, envp=3D) at vl.c:4780 >=20 > Reverting this patch, commit e5dc1a6c6c435, I don't see the issue. > Thanks, Yeah, I have a fix queued. Unfortunately, I don't have the usual setup to do pre-pull-request sets here so it will have to wait for next Monday. Paolo