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| author | Jiri Olsa <jolsa@redhat.com> | 2011-08-29 09:14:51 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2011-08-29 09:14:51 -0400 |
| commit | fbeb5f4db12dccb985ee10eb87fe00b46562b796 (patch) | |
| tree | 3d929f9a00442a74b8f85d7817c4799c9f4d59bf | |
| parent | ad69cc2652c0422ebac3296d914c25e470498ce1 (diff) | |
| download | glibc-fbeb5f4db12dccb985ee10eb87fe00b46562b796.tar.gz glibc-fbeb5f4db12dccb985ee10eb87fe00b46562b796.tar.xz glibc-fbeb5f4db12dccb985ee10eb87fe00b46562b796.zip | |
rtld, i386: Fix cfi directive in audit trampoline code
_dl_runtime_profile function has wrong cfi directive when rewinding stack back for the pltexit path. Only 8 bytes - 2 'pop edx' instructions from the pltentry-only code should be rewinded back. With attached patch, I'm able to rewind stack correctly throught the rtld code from audit library callback.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/i386/dl-trampoline.S | 4 |
2 files changed, 7 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog index ab754e5f8c..5adcddc8a4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2011-08-29 Jiri Olsa <jolsa@redhat.com> + + * sysdeps/i386/dl-trampoline.S (_dl_runtime_profile): Fix cfi + directive. + 2011-08-24 David S. Miller <davem@davemloft.net> * sysdeps/sparc/sparc64/strcmp.S: Rewrite. diff --git a/sysdeps/i386/dl-trampoline.S b/sysdeps/i386/dl-trampoline.S index 73b08ba67e..19e313e6ba 100644 --- a/sysdeps/i386/dl-trampoline.S +++ b/sysdeps/i386/dl-trampoline.S @@ -1,5 +1,5 @@ /* PLT trampolines. i386 version. - Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2007, 2011 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -99,7 +99,7 @@ _dl_runtime_profile: +4 %edx %esp free */ - cfi_adjust_cfa_offset (12) + cfi_adjust_cfa_offset (8) 1: movl %ebx, (%esp) cfi_rel_offset (ebx, 0) movl %edx, %ebx # This is the frame buffer size |