From: Keith Owens <kaos@ocs.com.au>
To: linux-kernel@vger.kernel.org
Cc: ak@suse.de
Subject: Incorrect alignment assumptions in x86_64 stacktrace
Date: Fri, 25 Aug 2006 16:59:58 +1000 [thread overview]
Message-ID: <13065.1156489198@kao2.melbourne.sgi.com> (raw)
2.6.18-rc4 arch/x86_64/kernel/stacktrace.c::get_stack_end() incorrectly
assumes that the irqstackptr is IRQSTACKSIZE aligned.
stack_end = (unsigned long)cpu_pda(cpu)->irqstackptr;
if (stack_end) {
stack_start = stack_end & ~(IRQSTACKSIZE-1);
irqstackptr is only guaranteed to be page aligned, not IRQSTACKSIZE
(4*PAGE_SIZE) aligned.
next reply other threads:[~2006-08-25 7:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-25 6:59 Keith Owens [this message]
2006-08-25 7:33 ` Incorrect alignment assumptions in x86_64 stacktrace Andi Kleen
2006-08-25 7:43 ` Keith Owens
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