Launchpad has imported 7 comments from the remote bug at https://bugzilla.redhat.com/show_bug.cgi?id=484871.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2009-02-10T12:46:07+00:00 Vitaly wrote: +++ This bug was initially created as a clone of Bug #481682 +++ Created an attachment (id=330051) proposed fix in kernel-2.6.18-128.el5 and prior versions, arch/x86_64/ia32/ia32entry.S hunk of the linux-2.6-misc-utrace-update.patch contains incorrect optimization. As result, out-of-table 32-bit syscalls on the x86_64 kernel do not return ENOSYS (unless the caller is being ptraced). For example, glibc-2.9+ popen() goes mad when pipe2 syscall returns its number 331 instead of fail with ENOSYS. As result, FC10+ 32-bit processes on RHEL5 x86_64 kernel break once popen(3) is called. --- Additional comment from k...@sacred.ru on 2009-01-27 04:29:59 EDT --- The issue was found while running Fedora 10 containers on an RHEL5+OpenVZ kernel. Relative OpenVZ bug: http://bugzilla.openvz.org/show_bug.cgi?id=1150 --- Additional comment from rol...@redhat.com on 2009-02-06 20:59:52 EDT --- Created an attachment (id=331182) test case source Simple test case, compile with -m32 and run on x86-64 kernel. The RHEL5 code is the same (broken) as upstream. I'll fix it upstream and then RHEL5 should backport the change so it continues to match upstream. --- Additional comment from rol...@redhat.com on 2009-02-06 21:02:48 EDT --- Created an attachment (id=331183) test case source Test case fixed to exit 0 for correct and nonzero for bug. Also, I forgot to note that to reproduce you have to have auditd disabled: /sbin/chkconfig auditd off; reboot --- Additional comment from rol...@redhat.com on 2009-02-06 21:34:13 EDT --- Created an attachment (id=331187) fix posted upstream Wait to see if upstream takes this as is, but almost certain they will. With s,/x86/,/x86_64/,g this same patch applies to RHEL5 fine. --- Additional comment from vmaya...@redhat.com on 2009-02-07 04:57:47 EDT --- > The RHEL5 code is the same (broken) as upstream. RHEL5 is not broken, I wasn't able to reproduce it. As I understood, this is due to this check: testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10) jnz ia32_tracesys And we have TIF_SYSCALL_AUDIT set. Also, it's possible to make the patch shorter: --- a/arch/x86/ia32/ia32entry.S +++ b/arch/x86/ia32/ia32entry.S @@ -417,6 +417,7 @@ ENTRY(ia32_syscall) GET_THREAD_INFO(%r10) orl $TS_COMPAT,TI_status(%r10) testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) + movq $-ENOSYS,RAX-ARGOFFSET(%rsp) jnz ia32_tracesys ia32_do_syscall: cmpl $(IA32_NR_syscalls-1),%eax I've tested it yesterday, but didn't post upstream yet. --- Additional comment from rol...@redhat.com on 2009-02-07 17:21:41 EDT --- It is broken. See comment#3 on how to reproduce it. Shorter patch does not mean shorter code path, which is what matters. Anyway, I've already posted upstream. --- Additional comment from rol...@redhat.com on 2009-02-07 17:25:55 EDT --- Upstream fix was merged: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c09249f8d1b84344eca882547afdbffee8c09d14 Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/339743/comments/0 ------------------------------------------------------------------------ On 2009-02-10T20:15:14+00:00 Roland wrote: I don't know what the point of this bug report is. The fix is already in upstream, and rawhide rebases from upstream daily. Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/339743/comments/1 ------------------------------------------------------------------------ On 2009-02-10T21:34:21+00:00 Chuck wrote: I think you want to file this bug against Fedora 10 ?? Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/339743/comments/2 ------------------------------------------------------------------------ On 2009-02-12T15:28:24+00:00 Vitaly wrote: (In reply to comment #2) > I think you want to file this bug against Fedora 10 ?? Yes. I don't know if this will be backported to 2.6.27.x Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/339743/comments/3 ------------------------------------------------------------------------ On 2009-02-18T07:57:17+00:00 Chuck wrote: Fixed in 2.6.27.18-170.2.28 and will send to -stable. Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/339743/comments/4 ------------------------------------------------------------------------ On 2009-02-24T20:53:34+00:00 Fedora wrote: kernel-2.6.27.19-170.2.35.fc10 has been pushed to the Fedora 10 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update kernel'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F10/FEDORA-2009-2003 Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/339743/comments/5 ------------------------------------------------------------------------ On 2009-03-02T16:56:38+00:00 Fedora wrote: kernel-2.6.27.19-170.2.35.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report. Reply at: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/339743/comments/6 ** Changed in: fedora Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/339743 Title: Jaunty i386 popen() misbehaves on x86_64 kernel 2.6.26 To manage notifications about this bug go to: https://bugs.launchpad.net/openvz-kernel/+bug/339743/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
