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| author | Brian Gerst <brgerst@gmail.com> | 2011-01-17 07:32:10 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-24 14:54:26 -0800 |
| commit | c2fa42bddd9caa19f0e3fa336da3899f1403b2bc (patch) | |
| tree | e74510e8e6c77ba80ac2090770808ce9c1a4f11d | |
| parent | b7fad097644503bacafb8727df0cf9c7c6e37625 (diff) | |
| download | lwn-c2fa42bddd9caa19f0e3fa336da3899f1403b2bc.tar.gz lwn-c2fa42bddd9caa19f0e3fa336da3899f1403b2bc.zip | |
x86: Clear irqstack thread_info
commit 7b698ea377e10b074ceef0d79218e6622d618421 upstream.
Mathias Merz reported that v2.6.37 failed to boot on his
system.
Make sure that the thread_info part of the irqstack is
initialized to zeroes.
Reported-and-Tested-by: Matthias Merz <linux@merz-ka.de>
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <AANLkTimyKXfJ1x8tgwrr1hYnNLrPfgE1NTe4z7L6tUDm@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/x86/kernel/irq_32.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c index 96656f207751..5206bb98b16d 100644 --- a/arch/x86/kernel/irq_32.c +++ b/arch/x86/kernel/irq_32.c @@ -129,8 +129,7 @@ void __cpuinit irq_ctx_init(int cpu) irqctx = page_address(alloc_pages_node(cpu_to_node(cpu), THREAD_FLAGS, THREAD_ORDER)); - irqctx->tinfo.task = NULL; - irqctx->tinfo.exec_domain = NULL; + memset(&irqctx->tinfo, 0, sizeof(struct thread_info)); irqctx->tinfo.cpu = cpu; irqctx->tinfo.preempt_count = HARDIRQ_OFFSET; irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); @@ -140,10 +139,8 @@ void __cpuinit irq_ctx_init(int cpu) irqctx = page_address(alloc_pages_node(cpu_to_node(cpu), THREAD_FLAGS, THREAD_ORDER)); - irqctx->tinfo.task = NULL; - irqctx->tinfo.exec_domain = NULL; + memset(&irqctx->tinfo, 0, sizeof(struct thread_info)); irqctx->tinfo.cpu = cpu; - irqctx->tinfo.preempt_count = 0; irqctx->tinfo.addr_limit = MAKE_MM_SEG(0); per_cpu(softirq_ctx, cpu) = irqctx; |