Mutlithreaded core dumps under 2.3.13

Philip Gladstone (philip@raptor.com)
Tue, 17 Aug 1999 16:44:13 -0400

This is a cryptographically signed message in MIME format.

--------------ms911E3CF27322EFBEED4DB050
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Hi,
I attach a patch that fixes a minor bug in the coredumping
logic (that happens with multithreaded apps), and also adds support
to 2.3 for generating real multithreaded core dumps (rather than the
current behavior of dumping the image of the non-crashing thread).

This patch only works for i386 and sparc. I need help on the other
platforms to implement 'get_pt_regs_for_task' -- a function that
gets the current saved register set for a task (which isn't the current
task).

The patch has two components -- one that adds a hook into the toplevel
core dumping code, and one into the ELF core dumper to actually create
the dump. [The 2.3 core dumper removed the capability that was in
2.0ff that allowed a loadable module to implement multithreaded core
dumps. This patch puts that capability back in.]

Enjoy,

Philip

-- 
Philip Gladstone                           +1 781 530 2461
Axent Technologies, Waltham, MA
--------------ms911E3CF27322EFBEED4DB050
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"
Content-Description: S/MIME Cryptographic Signature

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--------------ms911E3CF27322EFBEED4DB050--




-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/