[Bug 810739] Re: strcpy output incorrect if src and dst overlap
Any update on this bug. I have a native application working fine in Ubuntu 10.04 but failing in Ubuntu 12.04 due to overlapping memory passed to strcpy. Kindly let me know how I can fix/patch strcpy implementationn. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
@elango-go you may fetch an older glibc and preload it before launching your affected application. Alternatively, maybe it should be considered to provide a wrapper script that preloads old variant off strcpy. Doko, 18 months is long enough... if the software in question is at all developed/updated still... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
Thanks Dmitrijis. Can you help me/provide pointers how I can preload an older glibc. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
I have preloaded the strcpy implementation from glibc version 2.18 and solves the overlap string copy issues. Thanks Dmitrijs Ledkovs. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
Any news on this?? I can confirm the behavior on precise as well, version 2.15-0ubuntu10.3. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
It appears that this has been reverted by Red Hat to the old behavior: https://bugzilla.redhat.com/show_bug.cgi?id=781646 http://rhn.redhat.com/errata/RHBA-2012-0763.html Is Ubuntu going to provide a regression to the old behavior?? ** Bug watch added: Red Hat Bugzilla #781646 https://bugzilla.redhat.com/show_bug.cgi?id=781646 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
** Changed in: eglibc (Ubuntu) Status: Invalid = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
I can still confim this bug in precise. My version of libc-bin is 2.15-0ubuntu10.2. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
strcpy(3): DESCRIPTION [...] The strings may not overlap, and the destination string dest must be large enough to receive the copy. 18 months should be sufficient to even fix a commercial application. ** Changed in: eglibc (Ubuntu) Status: Confirmed = Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
Invalid? First, the application has not fixed it. They don't support every kernel as it comes out, so I have a choice between running Ubuntu or running my primary work application. Second, not everyone (see the link the original report) sees this as a bug in the application. A strong argument can be made that this is a bug in the kernel, and that there is no actual performance benefit to the change. The fact that this regression is documented doesn't make it a feature. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
Does this bug still affect precise? If it's the sse3 memcpy bug, it should have been fixed in git before 2.15 was cut, so precise and quantal should be fine. Can anyone confirm? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: eglibc (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
I can confirm this Problem using a old version of gcc for cross compiling.: ppc_8xx-gcc (GCC) 4.2.2 Copyright (C) 2007 Free Software Foundation, Inc. The problem is the parsing of the include paths: Output of strace: 15791 stat64(/opt/eldk_4.2/ppsr/libusr/lib/gcc/powerpc-linux//includude/c++/4./c++/4.2.2/powerpc-linux, 0xffc9eb00) = -1 ENOENT (No such file or directory) 15791 stat64(/opt/eldk_4.2/ppsr/libusr/lib/gcc/powerpc-linux//includude/c++/4./c++/4.2.2/backward, 0xffc9eb00) = -1 ENOENT (No such file or directory) As you can see the path was mixed up and therefore the include files could not be found. Output of ltrace: 15801 strchr(/opt/eldk_4.2/usr/../ppc_8xx/usr..., '/') = /opt/eldk_4.2/usr/../ppc_8xx/usr... 15801 strchr(opt/eldk_4.2/usr/../ppc_8xx/usr/..., '/') = /eldk_4.2/usr/../ppc_8xx/usr/lib... 15801 strchr(eldk_4.2/usr/../ppc_8xx/usr/lib/..., '/') = /usr/../ppc_8xx/usr/lib/gcc/powe... 15801 strchr(usr/../ppc_8xx/usr/lib/gcc/power..., '/') = /../ppc_8xx/usr/lib/gcc/powerpc-... 15801 strcpy(0x092d87cd, /ppc_8xx/usr/lib/gcc/powerpc-lin...) = 0x092d87cd 15801 strchr(/ppsr/libusr/lib/gcc/powerpc-lin..., '/') = /ppsr/libusr/lib/gcc/powerpc-lin... 15801 strchr(ppsr/libusr/lib/gcc/powerpc-linu..., '/') = /libusr/lib/gcc/powerpc-linux/./... 15801 strchr(libusr/lib/gcc/powerpc-linux/./, '/') = /lib/gcc/powerpc-linux/./../../ 15801 strchr(lib/gcc/powerpc-linux/./../../., '/') = /gcc/powerpc-linux/./../../../in... 15801 strchr(gcc/powerpc-linux/./../../../inc..., '/') = /powerpc-linux/./../../../includ... 15801 strchr(powerpc-linux/./../../../include..., '/') = /./../../../include/c++/4./c++/4... 15801 strcpy(0x092d87ef, /../../../include/c++/4./c++/4.2...) = 0x092d87ef 15801 strchr(../../includude/c++/4./c++/4.2.2..., '/') = /../includude/c++/4./c++/4.2.2/p... 15801 strcpy(0x092d87f0, /includude/c++/4./c++/4.2.2/powe...) = 0x092d87f0 15801 strchr(/includude/c++/4./c++/4.2.2/powe..., '/') = /includude/c++/4./c++/4.2.2/powe... 15801 strchr(includude/c++/4./c++/4.2.2/power..., '/') = /c++/4./c++/4.2.2/powerpc-linux 15801 strchr(c++/4./c++/4.2.2/powerpc-linux, '/') = /4./c++/4.2.2/powerpc-linux 15801 strchr(4./c++/4.2.2/powerpc-linux, '/') = /c++/4.2.2/powerpc-linux 15801 strchr(c++/4.2.2/powerpc-linux, '/') = /4.2.2/powerpc-linux 15801 strchr(4.2.2/powerpc-linux, '/') = /powerpc-linux 15801 strchr(powerpc-linux, '/') = NULL Its obvious that the function strcpy is the source of the problem. The solution in the comment above solve the problem. Until today we use natty to compile for ppc. This bug is now popped up while migrating to precise. That means that this bug does not contain libc6 (2.13-0ubuntu13.1). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 810739] Re: strcpy output incorrect if src and dst overlap
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810739 Title: strcpy output incorrect if src and dst overlap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/810739/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
