linux

iv/linux

History

Ian Wienand e384f41409 [IA64] set_thread_area fails in IA32 chroot

I tried to upgrade an IA32 chroot on my IA64 to a new glibc with TLS.
It kept dying because set_thread_area was returning -ESRCH
(bugs.debian.org/451939).

I instrumented arch/ia64/ia32/sys_ia32.c:get_free_idx() and ended up
seeing output like

[pid] idx   desc->a  desc->b
-----------------------------
[2710] 0 -> c6b0ffff 40dff31b
[2710] 1 -> 0 0
[2710] 2 -> 0 0

[2710] 0 -> c6b0ffff 40dff31b
[2710] 1 -> c6b0ffff 40dff31b
[2710] 2 -> 0 0

[2711] 0 -> c6b0ffff 40dff31b
[2711] 1 -> c6b0ffff 40dff31b
[2711] 2 -> 48c0ffff 40dff317

which suggested to me that TLS pointers were surviving exec() calls,
leading to GDT pointers filling up and the eventual failure of
get_free_idx().

I think the solution is flushing the tls array on exec.

Signed-Off-By: Ian Wienand <ianw@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>

2007-12-19 11:06:40 -08:00

configs

[IA64] update sn2 defconfig to 64kb pages

2007-10-29 11:32:42 -07:00

dig

[PATCH] tty: Remove include of screen_info.h from tty.h

2006-07-10 13:24:16 -07:00

[IA64] rename _bss to __bss_start

2007-12-07 16:11:49 -08:00

ia32

[IA64] ia32 nopage

2007-12-18 16:55:46 -08:00