[patch] i386, vdso=[0|1] boot option and /proc/sys/vm/vdso_enabled

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Subject: [patch] i386, vdso=[0|1] boot option and /proc/sys/vm/vdso_enabled
From: kuznet at ms2.inr.ac.ru (Alexey Kuznetsov)
Date: Mon May 22 07:33:36 2006
In-reply-to: <1148220651.3902.24.camel@xxxxxxxxxxxxxxxxxxxxx>

Hello!

> any chance to get a coredump ?

Been there... ld-linux in glibc-2.3.2 is broken: it does not understand
relocatable VDSO. If vsyscall-sysenter.so is not absolute, which is
the case with exec-shield patch, it dereferences not-relocated pointers
in .dynamic and segfaults.

BTW original Gerd Hoffman's patch as submitted by Rusty works
with libc-2.3.2, it generates good absolute VDSO.

Alexey

References:
- [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch
  - From: Rusty Russell
- [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch
  - From: Ingo Molnar
- [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch
  - From: Rusty Russell
- [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch
  - From: Andrew Morton
- [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch
  - From: Ingo Molnar
- [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch
  - From: Andrew Morton
- [PATCH] Gerd Hoffman's move-vsyscall-into-user-address-range patch
  - From: Linus Torvalds
- [patch] i386, vdso=[0|1] boot option and /proc/sys/vm/vdso_enabled
  - From: Ingo Molnar
- [patch] i386, vdso=[0|1] boot option and /proc/sys/vm/vdso_enabled
  - From: Andrew Morton
- [patch] i386, vdso=[0|1] boot option and /proc/sys/vm/vdso_enabled
  - From: Arjan van de Ven

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