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Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]"

From Axel Beckert <abe@debian.org>
Newsgroups linux.debian.bugs.dist
Subject Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]"
Date 2024-06-11 02:40 +0200
Message-ID <INXIl-22do-3@gated-at.bofh.it> (permalink)
References <INMtz-1Vkh-1@gated-at.bofh.it> <INXfj-224p-1@gated-at.bofh.it> <INMtz-1Vkh-1@gated-at.bofh.it> <INXfj-224p-1@gated-at.bofh.it>
Organization The Debian Project

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Hi David,

David Bremner wrote:
> swaks -t bremner@debian.org --pipe 'gdb -batch -ex run -ex bt --args /usr/lib/sendmail -bs'
> 
> This actually runs without segfaulting, which made me think it might be
> a memory error.

There's one memory fix commit upstream in the master branch:
https://github.com/bruceg/nullmailer/commit/834e2eb6b7eac2648fc371c432a46e98d5966bb4

Could it be this one? At least "fdbuf.c" sounds as if it might be
involved in file descriptor thingies.

> Attempt #3
> 
> swaks -t bremner@debian.org --pipe 'valgrind /usr/lib/sendmail -bs'
> 
> This also runs without errors,

Clearly a Heisenbug. ;-)

> so I'm out of ideas for the moment.

Maybe upstream has an idea if it's not that already made commit?

		Regards, Axel
-- 
 ,''`.  |  Axel Beckert <abe@debian.org>, https://people.debian.org/~abe/
: :' :  |  Debian Developer, ftp.ch.debian.org Admin
`. `'   |  4096R: 2517 B724 C5F6 CA99 5329  6E61 2FF9 CD59 6126 16B5
  `-    |  1024D: F067 EA27 26B9 C3FC 1486  202E C09E 1D89 9593 0EDE

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Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]" Axel Beckert <abe@debian.org> - 2024-06-10 14:40 +0200
  Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]" David Bremner <david@tethera.net> - 2024-06-11 02:10 +0200
    Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]" Axel Beckert <abe@debian.org> - 2024-06-11 02:40 +0200
      Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]" David Bremner <david@tethera.net> - 2024-06-11 12:50 +0200
    Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]" David Bremner <david@tethera.net> - 2024-06-12 12:30 +0200
  Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]" David Bremner <david@tethera.net> - 2024-06-21 21:00 +0200
  Bug#1072922: nullmailer: "sendmail -bs" crashes: "traps: nullmailer-smtp[15059] general protection fault ip:7f0368d73dd9 sp:7fff5e3d7088 error:0 in libc.so.6[7f0368c41000+157000]" David Bremner <david@tethera.net> - 2024-06-25 12:40 +0200

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