From: WANG C. <xiy...@ya...> - 2007-10-23 06:12:35
|
Hi, list! This is my first time to use UML. However, I met the following problem. After compiling the whole uml, I tried to run it with: $ ./linux ubd0=~/Download/Fedora7-x86-root_fs root=/dev/ubd0 But it failed and the failure log was: Core dump limits : soft - 0 hard - NONE Checking that ptrace can change system call numbers...check_ptrace : expected SIGSTOP, got status = 11 Did I miss something? What should I do? Any help would be appreciated. Thanks! -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Flavio <fbc...@gm...> - 2007-10-23 11:30:54
|
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From: WANG C. <xiy...@ya...> - 2007-10-23 13:26:58
|
On Tue, 23 Oct 2007 13:30:45 +0200 Flavio <fbc...@gm...> wrote: > Hello, > > try something like that: > $ linux ubd0=rootfs.debian ubd1=swapfs.debian > eth0=tuntap,,,host_ip_address mem=512M > > I've never used "root=/dev/ubd0" option. > Thanks! But it still can't work. ;( Any other ideas? -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Flavio <fbc...@gm...> - 2007-10-23 13:34:30
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From: WANG C. <xiy...@ya...> - 2007-10-23 13:45:35
|
On Tue, 23 Oct 2007 14:36:19 +0100 "Jay Shah" <jay...@gm...> wrote: > Hello, > > Please execute this and paste output: > > ./linux ubda=~/Download/Fedora7-x86-root_fs > $ ./linux ubda=~/Download/Fedora7-x86-root_fs Core dump limits : soft - 0 hard - NONE Checking that ptrace can change system call numbers...check_ptrace : expected SIGSTOP, got status = 11 Thanks! -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Jay S. <jay...@gm...> - 2007-10-23 13:46:21
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From: WANG C. <xiy...@ya...> - 2007-10-23 13:55:47
|
On Tue, 23 Oct 2007 14:46:07 +0100 "Jay Shah" <jay...@gm...> wrote: > Have you tried using a precompiled kernel from nagafix? > No. I downloaded the kernel from kernel.org and complied it all by myself. The version is 2.6.23-git16. Thanks! -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: WANG C. <xiy...@ya...> - 2007-10-23 13:51:05
|
On Tue, 23 Oct 2007 15:34:26 +0200 Flavio <fbc...@gm...> wrote: > It maybe there's some bug ... > I don't know if it is this case: http://lkml.org/lkml/2007/2/8/236 > It may helps you. > I am not sure neither. ;( I think if that patch fixed some bug, it is already merged into mainline kernel, thus bug should not exist now. Btw, I am using the 2.6.23-git16 kernel. -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Flavio <fbc...@gm...> - 2007-10-23 13:56:40
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From: Antoine M. <an...@na...> - 2007-10-23 20:53:06
|
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 WANG Cong wrote: > Hi, list! > > This is my first time to use UML. However, I met the following problem. > After compiling the whole uml, I tried to run it with: > > $ ./linux ubd0=~/Download/Fedora7-x86-root_fs root=/dev/ubd0 > > But it failed and the failure log was: > > Core dump limits : > soft - 0 > hard - NONE > Checking that ptrace can change system call numbers...check_ptrace : expected SIGSTOP, got status = 11 > > Did I miss something? What should I do? Which versions of the guest and host kernels are you running? (always use the latest available if possible) Antoine -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHHl8qGK2zHPGK1rsRCoz1AJ9o2Bly98rd4vtfZdfua3whvtuDeACfb64F luHCulQl1jWtDFlQOIbrT50= =1ug5 -----END PGP SIGNATURE----- |
From: WANG C. <xiy...@ya...> - 2007-10-24 02:37:57
|
On Tue, 23 Oct 2007 21:52:58 +0100 Antoine Martin <an...@na...> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > WANG Cong wrote: > > Hi, list! > > > > This is my first time to use UML. However, I met the following problem. > > After compiling the whole uml, I tried to run it with: > > > > $ ./linux ubd0=~/Download/Fedora7-x86-root_fs root=/dev/ubd0 > > > > But it failed and the failure log was: > > > > Core dump limits : > > soft - 0 > > hard - NONE > > Checking that ptrace can change system call numbers...check_ptrace : expected SIGSTOP, got status = 11 > > > > Did I miss something? What should I do? > Which versions of the guest and host kernels are you running? > (always use the latest available if possible) > Hi. Host kernel version: $ uname -r 2.6.21-1.3194.fc7 And guest kernel is 2.6.23-git16 and I use `make defconfig ARCH=um' to compile my uml. Regards. -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Jeff D. <jd...@ad...> - 2007-10-24 15:04:08
|
On Tue, Oct 23, 2007 at 02:08:16PM +0800, WANG Cong wrote: > $ ./linux ubd0=~/Download/Fedora7-x86-root_fs root=/dev/ubd0 > > But it failed and the failure log was: > > Core dump limits : > soft - 0 > hard - NONE > Checking that ptrace can change system call numbers...check_ptrace : expected SIGSTOP, got status = 11 Can you enable core dumps (ulimit -c unlimited) and see if the child process dumps core? Jeff -- Work email - jdike at linux dot intel dot com |
From: WANG C. <xiy...@ya...> - 2007-10-25 06:08:00
|
On Wed, 24 Oct 2007 11:04:03 -0400 Jeff Dike <jd...@ad...> wrote: > On Tue, Oct 23, 2007 at 02:08:16PM +0800, WANG Cong wrote: > > $ ./linux ubd0=~/Download/Fedora7-x86-root_fs root=/dev/ubd0 > > > > But it failed and the failure log was: > > > > Core dump limits : > > soft - 0 > > hard - NONE > > Checking that ptrace can change system call numbers...check_ptrace : expected SIGSTOP, got status = 11 > > Can you enable core dumps (ulimit -c unlimited) and see if the child > process dumps core? > Yes, dumped. $ ulimit -c unlimited $ ./linux ubda=~/Download/Fedora7-x86-root_fs Core dump limits : soft - NONE hard - NONE Checking that ptrace can change system call numbers...check_ptrace : expected SIGSTOP, got status = 139 $ ls -l core.10752 -rw------- 1 wangcong wangcong 2207744 10-25 14:00 core.10752 What should I do then? Thanks. -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Jeff D. <jd...@ad...> - 2007-10-25 14:45:07
|
On Thu, Oct 25, 2007 at 02:03:11PM +0800, WANG Cong wrote: > $ ls -l core.10752 > -rw------- 1 wangcong wangcong 2207744 10-25 14:00 core.10752 > > What should I do then? gdb it and get a backtrace, although I'm suspicious that it's the main process, not the child that unexpectedly segfaulted. Was there only one core? Jeff -- Work email - jdike at linux dot intel dot com |
From: WANG C. <xiy...@ya...> - 2007-10-26 06:56:26
|
On Thu, 25 Oct 2007 10:44:59 -0400 Jeff Dike <jd...@ad...> wrote: > On Thu, Oct 25, 2007 at 02:03:11PM +0800, WANG Cong wrote: > > $ ls -l core.10752 > > -rw------- 1 wangcong wangcong 2207744 10-25 14:00 core.10752 > > > > What should I do then? > > gdb it and get a backtrace, although I'm suspicious that it's the main > process, not the child that unexpectedly segfaulted. Was there only > one core? > Yes, exactly one. $ ls core* core.10752 And backtrace is: #0 0x0807b197 in kernel_sigprocmask (how=0, set=0xbf89bd2c, oldset=0xbf89bcac) at kernel/signal.c:1981 1981 *oldset = current->blocked; (gdb) bt #0 0x0807b197 in kernel_sigprocmask (how=0, set=0xbf89bd2c, oldset=0xbf89bcac) at kernel/signal.c:1981 #1 0x08064adb in change_sig (signal=28, on=0) at arch/um/os-Linux/signal.c:186 #2 0x08064bc8 in ptrace_child () at arch/um/os-Linux/start_up.c:35 #3 0x08064c91 in start_ptraced_child () at arch/um/os-Linux/start_up.c:100 #4 0x0804b6e1 in check_ptrace () at arch/um/os-Linux/start_up.c:284 #5 0x0804b867 in os_early_checks () at arch/um/os-Linux/start_up.c:347 #6 0x0804a4d5 in linux_main (argc=2, argv=0xbf89bee4) at arch/um/kernel/um_arch.c:270 #7 0x0804ae74 in main (argc=2, argv=0xbf89bee4, envp=0xbf89bef0) at arch/um/os-Linux/main.c:148 Regards. -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Jeff D. <jd...@ad...> - 2007-10-26 16:29:48
|
On Fri, Oct 26, 2007 at 02:51:44PM +0800, WANG Cong wrote: > And backtrace is: > > #0 0x0807b197 in kernel_sigprocmask (how=0, set=0xbf89bd2c, oldset=0xbf89bcac) > at kernel/signal.c:1981 > 1981 *oldset = current->blocked; You either need the patch below on top of what you already have or this patch on top of a clean rc1 http://marc.info/?l=linux-kernel&m=119332492222601&q=raw Jeff -- Work email - jdike at linux dot intel dot com KERNEL_DEFINES needs whitespace trimmed, otherwise this whitespace crunching done by make fools the patsubst which is used to remove KERNEL_DEFINES from USER_CFLAGS. Signed-off-by: Jeff Dike <jd...@li...> --- arch/um/Makefile | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) Index: linux-2.6/arch/um/Makefile =================================================================== --- linux-2.6.orig/arch/um/Makefile 2007-10-22 16:19:38.000000000 -0400 +++ linux-2.6/arch/um/Makefile 2007-10-22 16:19:44.000000000 -0400 @@ -70,9 +70,12 @@ include $(srctree)/$(ARCH_DIR)/Makefile- # in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different # errnos. # These apply to kernelspace only. +# +# strip leading and trailing whitespace to make the USER_CFLAGS removal of these +# defines more robust -KERNEL_DEFINES = -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ - -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES) +KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ + -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES)) KBUILD_CFLAGS += $(KERNEL_DEFINES) KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,) |
From: WANG C. <xiy...@ya...> - 2007-10-27 06:36:20
|
On Fri, 26 Oct 2007 12:29:31 -0400 Jeff Dike <jd...@ad...> wrote: > On Fri, Oct 26, 2007 at 02:51:44PM +0800, WANG Cong wrote: > > And backtrace is: > > > > #0 0x0807b197 in kernel_sigprocmask (how=0, set=0xbf89bd2c, oldset=0xbf89bcac) > > at kernel/signal.c:1981 > > 1981 *oldset = current->blocked; > > You either need the patch below on top of what you already have or > this patch on top of a clean rc1 > http://marc.info/?l=linux-kernel&m=119332492222601&q=raw > Hi, Jeff! Thanks for your reply! I am using the latest Linus-tree. The above patch contains Ingo's, Al's and my patch. And Ingo's is merged in commit b15136e9497ef5d6e08cf665e0d0acf7a229f6dc, mine is merged in commit 23464ffa47689e46985fb10ae9e34bbc9e83f387. So I just need to apply Al's patch manually. But after applying Al's patch, the core dump still occured, just as mentioned before. Backtrace is also the same. Any other ideas? Regards. -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |
From: Jeff D. <jd...@ad...> - 2007-10-27 14:29:02
|
On Sat, Oct 27, 2007 at 02:31:23PM +0800, WANG Cong wrote: > The above patch contains Ingo's, Al's and my patch. And Ingo's is merged in commit b15136e9497ef5d6e08cf665e0d0acf7a229f6dc, mine is merged in commit 23464ffa47689e46985fb10ae9e34bbc9e83f387. So I just need to apply Al's patch manually. > > But after applying Al's patch, the core dump still occured, just as > mentioned before. Backtrace is also the same. Any other ideas? You should do what I said, because your description of that patch is wrong. It contains the pieces you described, plus a fix of mine which fixes the bug you're hitting. That piece is what I attached to the bottom of my mail, which you ignored. Jeff -- Work email - jdike at linux dot intel dot com |
From: WANG C. <xiy...@ya...> - 2007-10-28 05:13:12
|
On Sat, 27 Oct 2007 10:28:49 -0400 Jeff Dike <jd...@ad...> wrote: > On Sat, Oct 27, 2007 at 02:31:23PM +0800, WANG Cong wrote: > > The above patch contains Ingo's, Al's and my patch. And Ingo's is merged in commit b15136e9497ef5d6e08cf665e0d0acf7a229f6dc, mine is merged in commit 23464ffa47689e46985fb10ae9e34bbc9e83f387. So I just need to apply Al's patch manually. > > > > But after applying Al's patch, the core dump still occured, just as > > mentioned before. Backtrace is also the same. Any other ideas? > > You should do what I said, because your description of that patch is > wrong. It contains the pieces you described, plus a fix of mine which > fixes the bug you're hitting. That piece is what I attached to the > bottom of my mail, which you ignored. Sorry, Jeff. I didn't notice your patch. ;( After adding your patch, uml works very fine. I am enjoying it. Thank you! -- May the Source Be With You. __________________________________________________ ¸Ï¿ì×¢²áÑÅ»¢³¬´óÈÝÁ¿Ãâ·ÑÓÊÏä? http://cn.mail.yahoo.com |