Messages in this thread |  | | Date | Thu, 29 Aug 2002 12:18:21 -0700 (PDT) | From | "Randy.Dunlap" <> | Subject | Re: Kernel Stack Limit... |
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On 29 Aug 2002, Robert Love wrote:
| On Thu, 2002-08-29 at 15:07, Raj, Ashok wrote: | | > Please reply to me, since i dont have this email id on the list. | > | > Could someone tell me at what the kernel stack size limit is? | | It depends on the architecture. 8KB for x86 and most others. Some | (all?) 64-bit platforms have 16KB stacks. | | Note the effective size is actually (8KB - sizeof(task_struct)) in 2.4 | and (8KB - sizeof(thread_info)) in 2.5 since those structures are stored | at the top of the stack. | | Also note interrupts share the stack. | | > Is there a gcc option for x86 that can warn if too large variables are | > specified in the stack? | | I believe 2.4-ac has a stack overflow check in it... as does the RedHat | kernel - check it out. | | Also kgdb (or at least our copy here at MontaVista) has a stack overflow | check.
Also Keith Owens posted a script in the last couple of days that checks stack depth.
-- ~Randy
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