Messages in this thread Patch in this message | | | Date | Mon, 29 May 2017 01:16:40 -0700 | From | tip-bot for Borislav Petkov <> | Subject | [tip:x86/urgent] x86/debug/32: Convert a smp_processor_id() call to raw to avoid DEBUG_PREEMPT warning |
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Commit-ID: 5d9070b1f0fc9a159a9a3240c43004828408444b Gitweb: http://git.kernel.org/tip/5d9070b1f0fc9a159a9a3240c43004828408444b Author: Borislav Petkov <bp@suse.de> AuthorDate: Sun, 28 May 2017 11:03:42 +0200 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Mon, 29 May 2017 08:22:49 +0200
x86/debug/32: Convert a smp_processor_id() call to raw to avoid DEBUG_PREEMPT warning
... to raw_smp_processor_id() to not trip the
BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1
check. The reasoning behind it is that __warn() already uses the raw_ variants but the show_regs() path on 32-bit doesn't.
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170528092212.fiod7kygpjm23m3o@pd.tnic Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/kernel/process_32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index ff40e74..ffeae81 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -78,7 +78,7 @@ void __show_regs(struct pt_regs *regs, int all) printk(KERN_DEFAULT "EIP: %pS\n", (void *)regs->ip); printk(KERN_DEFAULT "EFLAGS: %08lx CPU: %d\n", regs->flags, - smp_processor_id()); + raw_smp_processor_id()); printk(KERN_DEFAULT "EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n", regs->ax, regs->bx, regs->cx, regs->dx);
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