x86: avoid theoretical spurious NMI backtraces with CONFIG_CPUMASK_OFFSTACK=y

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In theory (though not shown in practice) alloc_cpumask_var() doesn't zero
memory, so CPUs might print an "NMI backtrace for cpu %d" once on boot.

(Bug introduced in fcef8576d8).

[ Impact: avoid theoretical syslog noise in rare configs ]

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <alpine.DEB.2.00.0904202113520.10097@gandalf.stny.rr.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

...

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Rusty Russell 2009-04-21 16:03:41 +09:30 • committed by Ingo Molnar

parent 2f537a9f8e

commit fcc5c4a2fe

1 changed files with 1 additions and 1 deletions

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arch/x86/kernel/apic/nmi.c

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