I wrote:
> Linus,
>
> Please do
>
> git pull \
> git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc.git merge
>
> to get a patch from Roland McGrath that fixes a user-triggerable oops
> on 64-bit powerpc.
I have added another commit from Jeremy Kerr fixing a mismerge that
caused a user visible ABI regression from 2.6.22. The diffstat and
log below include both the patch from Roland and this new patch.
Thanks,
Paul.
arch/powerpc/kernel/process.c | 7 +++++++
arch/powerpc/platforms/cell/spufs/file.c | 4 ++--
2 files changed, 9 insertions(+), 2 deletions(-)
commit 603c461250b223ac42c10b8d1df653af1a361d44
Author: Jeremy Kerr <[EMAIL PROTECTED]>
Date: Wed Sep 26 10:53:45 2007 +1000
[POWERPC] spufs: fix mismerge, making context signal{1,2} files readable
again
The commit 8b6f50ef1d5cc86b278eb42bc91630fad455fb10 seems to have
been affected by a mismerge of a duplicate patch
(d054b36ffd302ec65aabec16a0c60ddd9e6b5a62) - both the
spufs_dir_contents and spufs_dir_nosched_contents have been given
write-only signal notification files.
This change reverts the spufs_dir_contents array to use the
readable signal notification file implementation.
Signed-off-by: Jeremy Kerr <[EMAIL PROTECTED]>
Acked-by: Arnd Bergmann <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
commit 474f81967217f3bec2389ae913da72641f2c40e3
Author: Roland McGrath <[EMAIL PROTECTED]>
Date: Mon Sep 24 16:52:44 2007 -0700
[POWERPC] Ensure FULL_REGS on exec
When PTRACE_O_TRACEEXEC is used, a ptrace call to fetch the registers at
the PTRACE_EVENT_EXEC stop (PTRACE_PEEKUSR) will oops in CHECK_FULL_REGS.
With recent versions, "gdb --args /bin/sh -c 'exec /bin/true'" and "run" at
the (gdb) prompt is sufficient to produce this. I also have written an
isolated test case, see
https://bugzilla.redhat.com/show_bug.cgi?id=301791#c15.
This change fixes the problem by clearing the low bit of pt_regs.trap in
start_thread so that FULL_REGS is true again. This is correct since all of
the GPRs that "full" refers to are cleared in start_thread.
Signed-off-by: Roland McGrath <[EMAIL PROTECTED]>
Signed-off-by: Paul Mackerras <[EMAIL PROTECTED]>
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@ozlabs.org
https://ozlabs.org/mailman/listinfo/linuxppc-dev
