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Bug 4236 - elf_prstatus via procfs.h differs from kernel
Summary: elf_prstatus via procfs.h differs from kernel
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 6.0
Hardware: alpha
OS: Linux
Target Milestone: ---
Assignee: Cristian Gafton
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 1999-07-28 08:32 UTC by jcownie
Modified: 2008-08-01 16:22 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed:

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Description jcownie 1999-07-28 08:32:25 UTC
On Red Hat 6.0 on the Alpha processor (kernel 2.2.3), there
seems to be an inconsistency between
the file elfcore.h (which defines elf_prstatus) and the
kernel (which dumps an elf_prstatus into
a note in the core file).

When one compiles a trivial code which prints the sizeof
(struct elf_prstatus),
one gets the result 352, however the size of the NOTE in a
core file (which is
set by the kernel to be sizeof (elf_prstatus) is 384.

The inconsistency appears to be caused by an extra 32 bytes
of something
somewhere before the pr_reg structure, since one can easily
write a program
to put known values in the registers and then core dump,
allowing one to see
where the registers appear...

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