From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1VmpCQ-0000u1-Kn for user-mode-linux-devel@lists.sourceforge.net; Sat, 30 Nov 2013 18:23:26 +0000 Received: from b.ns.miles-group.at ([95.130.255.144] helo=radon.swed.at) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1VmpCO-00088q-VB for user-mode-linux-devel@lists.sourceforge.net; Sat, 30 Nov 2013 18:23:26 +0000 From: Richard Weinberger Date: Sat, 30 Nov 2013 19:23:15 +0100 Message-ID: <1708241.BcyNY8F1Qe@sandpuppy> In-Reply-To: <529A2C4F.5060000@gmx.de> References: <5299F818.4070408@gmx.de> <2621846.9otYC7P9Yq@sandpuppy> <529A2C4F.5060000@gmx.de> MIME-Version: 1.0 List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net Subject: Re: [uml-devel] does 3.12.2 breaks UML with "con=xterm" ? To: Toralf =?ISO-8859-1?Q?F=F6rster?= Cc: UML devel Am Samstag, 30. November 2013, 19:19:59 schrieb Toralf F=F6rster: > On 11/30/2013 06:35 PM, Richard Weinberger wrote: > > Am Samstag, 30. November 2013, 18:26:45 schrieb Toralf F=F6rster: > >> On 11/30/2013 05:36 PM, Richard Weinberger wrote: > >>> Am Samstag, 30. November 2013, 17:28:55 schrieb Toralf F=F6rster: > >>>> On 11/30/2013 03:51 PM, Richard Weinberger wrote: > >>>>> Please more details. > >>>>> Does Linus' tree work? > >>>>> Does it crash immediately? > >>>> = > >>>> Does this helps ? : > >>> Please try Linus's tree and run it without GDB. > >>> UML now has a complete new stack unwinder, let's give it a try. > >> = > >> I tried it again now with host kernel 3.13-rc2 - (and guest kernel 3.1= 1, > >> 3.12 and 3.13-rc2) - same picture. > >> = > >> (FWIW I tried the UML guest already with a lot of versions inclusive > >> latest Linus git tree, but for the host I'd like to run latest stable > >> from Greg KH) > > = > > Please show me the backtrace from Linus' tree. > > = > > Thanks, > > //richard > = > 3 subsequent runs gave these 3 back traces : Sorry for being imprecise, I meant the raw output from UML, not GDB. Currently it looks like yet another cluster fuck within the winch-Thread. Thanks, //richard > = > tfoerste@n22 /mnt/ramdisk $ cat bt-g > [New LWP 5297] > Core was generated by `/home/tfoerste/devel/linux/linux earlyprintk > ubda=3D/home/tfoerste/virtual/uml/tr'. Program terminated with signal 11, > Segmentation fault. > #0 constant_test_bit (addr=3D, nr=3D) at > /home/tfoerste/devel/linux/arch/x86/include/asm/bitops.h:313 313 = = > (addr[nr >> _BITOPS_LONG_SHIFT])) !=3D 0; > #0 constant_test_bit (addr=3D, nr=3D) at > /home/tfoerste/devel/linux/arch/x86/include/asm/bitops.h:313 No locals. > #1 test_ti_thread_flag (ti=3D, flag=3D) at > include/linux/thread_info.h:93 No locals. > #2 test_tsk_thread_flag (flag=3D, tsk=3D) = at > include/linux/sched.h:2422 No locals. > #3 signal_pending (p=3D) at include/linux/sched.h:2448 > No locals. > #4 __set_task_blocked (tsk=3D0x34747865, newset=3D0x49b41f4c) at > kernel/signal.c:2530 No locals. > #5 0x0808a390 in __set_current_blocked (newset=3D0x49b41f4c) at > kernel/signal.c:2558 tsk =3D 0x34747865 > #6 0x0808a3b7 in set_current_blocked (newset=3D0x0) at kernel/signal.c:2= 550 > No locals. > #7 0x0808b8fd in sigsuspend (set=3D0x0) at kernel/signal.c:3556 > No locals. > #8 0x080646d8 in winch_thread (arg=3D0x0) at arch/um/drivers/chan_user.c= :210 > sigs =3D > pty_fd =3D 172431400 > pipe_fd =3D 15 > c =3D 1 '\001' > #9 0x083da38e in clone () > No symbol table info available. > = > = > tfoerste@n22 /mnt/ramdisk $ cat bt-g > [New LWP 5557] > Core was generated by `/home/tfoerste/devel/linux/linux earlyprintk > ubda=3D/home/tfoerste/virtual/uml/tr'. Program terminated with signal 11, > Segmentation fault. > #0 0x0808b8da in sigsuspend (set=3D0x0) at kernel/signal.c:3555 > 3555 current->saved_sigmask =3D current->blocked; > #0 0x0808b8da in sigsuspend (set=3D0x0) at kernel/signal.c:3555 > No locals. > #1 0x080646d8 in winch_thread (arg=3D0x0) at arch/um/drivers/chan_user.c= :210 > sigs =3D > pty_fd =3D 145942568 > pipe_fd =3D 15 > c =3D 1 '\001' > #2 0x083da38e in clone () > No symbol table info available. > = > = > tfoerste@n22 /mnt/ramdisk $ cat bt-g > [New LWP 5809] > Core was generated by `/home/tfoerste/devel/linux/linux earlyprintk > ubda=3D/home/tfoerste/virtual/uml/tr'. Program terminated with signal 11, > Segmentation fault. > #0 constant_test_bit (addr=3D, nr=3D) at > /home/tfoerste/devel/linux/arch/x86/include/asm/bitops.h:313 313 = = > (addr[nr >> _BITOPS_LONG_SHIFT])) !=3D 0; > #0 constant_test_bit (addr=3D, nr=3D) at > /home/tfoerste/devel/linux/arch/x86/include/asm/bitops.h:313 No locals. > #1 test_ti_thread_flag (ti=3D, flag=3D) at > include/linux/thread_info.h:93 No locals. > #2 test_tsk_thread_flag (flag=3D, tsk=3D) = at > include/linux/sched.h:2422 No locals. > #3 signal_pending (p=3D) at include/linux/sched.h:2448 > No locals. > #4 __set_task_blocked (tsk=3D0x34747865, newset=3D0x48b41f4c) at > kernel/signal.c:2530 No locals. > #5 0x0808a390 in __set_current_blocked (newset=3D0x48b41f4c) at > kernel/signal.c:2558 tsk =3D 0x34747865 > #6 0x0808a3b7 in set_current_blocked (newset=3D0x0) at kernel/signal.c:2= 550 > No locals. > #7 0x0808b8fd in sigsuspend (set=3D0x0) at kernel/signal.c:3556 > No locals. > #8 0x080646d8 in winch_thread (arg=3D0x0) at arch/um/drivers/chan_user.c= :210 > sigs =3D > pty_fd =3D 152619048 > pipe_fd =3D 15 > c =3D 1 '\001' > #9 0x083da38e in clone () > No symbol table info available. ---------------------------------------------------------------------------= --- Rapidly troubleshoot problems before they affect your business. 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