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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-12-02 14:09:16 +1030 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-28 15:01:09 -0800 |
| commit | 08b84be9e906f97340acbf6c5daaa53bbf4fa194 (patch) | |
| tree | ff5560bd728d1536a67e85ec84262d5935d003fb /kernel/kprobes.c | |
| parent | eb9dbd9c1ffe8fa93e385c186e25ffa7bad53b67 (diff) | |
sched: Fix isolcpus boot option
commit bdddd2963c0264c56f18043f6fa829d3c1d3d1c0 upstream.
Anton Blanchard wrote:
> We allocate and zero cpu_isolated_map after the isolcpus
> __setup option has run. This means cpu_isolated_map always
> ends up empty and if CPUMASK_OFFSTACK is enabled we write to a
> cpumask that hasn't been allocated.
I introduced this regression in 49557e620339cb13 (sched: Fix
boot crash by zalloc()ing most of the cpu masks).
Use the bootmem allocator if they set isolcpus=, otherwise
allocate and zero like normal.
Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: peterz@infradead.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
LKML-Reference: <200912021409.17013.rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Anton Blanchard <anton@samba.org>
Diffstat (limited to 'kernel/kprobes.c')
0 files changed, 0 insertions, 0 deletions