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Problem with stack overflow

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Operating Systems HP-UX Problem with stack overflow
# 1  
Old 03-26-2008
Data Problem with stack overflow
Hi,
I get a problem with stack overflow on HP-UX, when running a C program.

Pid 28737 received a SIGSEGV for stack growth failure.
Possible causes: insufficient memory or swap space,
or stack size exceeded maxssiz.

The possible cause i found, was that the definition of a structure had changed.
One object was recompiled with the new definition, but 1, maybe not.
This caused a memory error and the program received 'SIGSEGV' (segmentation error).

But what i feel is that the variable in question, being a local variable, and hence allocated on stack, caused the above message to occur.
It referenced an address beyond stack bounds.
I beleive that maxssiz dint really exceed.
The HP manual says that if such an error occurs, then the only option is to wait and the OS will try to resolve it by itself.

Would this error occur again, if another stack variable too exceeds stack bounds?

Please advice/correct me.
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LEARN ABOUT NETBSD

stack_shrink

STACK(9)						   BSD Kernel Developer's Manual						  STACK(9)

NAME

     STACK -- stack macros

SYNOPSIS

     #include <sys/param.h>

     type
     STACK_ALLOC(sp, size);

     type
     STACK_MAX(sp, size);

     type
     STACK_ALIGN(sp, bytes);

     type
     STACK_GROW(sp, size);

     type
     STACK_SHRINK(sp, size);

DESCRIPTION

     A stack is an area of memory with a fixed origin but with a variable size.  A stack pointer points to the most recently referenced location
     on the stack.  Initially, when the stack has a size of zero, the stack pointer points to the origin of the stack.	When data items are added
     to the stack, the stack pointer moves away from the origin.

     The STACK_ALLOC() macro returns a pointer to allocated stack space of some size.  Given the returned pointer sp and size, STACK_MAX() returns
     the maximum stack address of the allocated stack space.  The STACK_ALIGN() macro can be used to align the stack pointer sp by the specified
     amount of bytes.

     Two basic operations are common to all stacks: a data item is added (``push'') to the location pointed by sp or a data item is removed
     (``pop'') from the stack.	The stack pointer must be subsequently adjusted by the size of the data item.  The STACK_GROW() and STACK_SHRINK()
     macros adjust the stack pointer sp by given size.

     A stack may grow either up or down.  The described macros take this into account by using the __MACHINE_STACK_GROWS_UP preprocessor define.

SEE ALSO

     param(3), queue(3)

BSD
								   April 8, 2011							       BSD