MIPS: ptrace: Avoid smp_processor_id() when retrieving FPU IR

Browse source

commit 656ff9bef0 upstream.

Whenever ptrace attempts to retrieve the FPU implementation register it
accesses it through current_cpu_data, which calls smp_processor_id().
Since the code may execute with preemption enabled, this can trigger
a warning. Fix this by using boot_cpu_data to get the IR instead.

Signed-off-by: Alex Smith <alex@alex-smith.me.uk>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7449/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Alex Smith 2014-07-23 14:40:06 +01:00 • committed by Greg Kroah-Hartman

parent 3d26169d4f

commit 17dcaca5dd

2 changed files with 3 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

arch/mips/kernel/ptrace.c

View file

2

arch/mips/kernel/ptrace32.c

View file