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+ for <notmuch@notmuchmail.org>; Fri, 19 Jul 2013 11:02:25 -0400 (EDT)\r
+Message-ID: <51E95500.8000404@fifthhorseman.net>\r
+Date: Fri, 19 Jul 2013 11:02:24 -0400\r
+From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>\r
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+To: notmuch <notmuch@notmuchmail.org>\r
+Subject: Re: segmentation fault caused by empty application/pgp-signature part\r
+References: <87mwpiu4vi.fsf@zancas.localnet>\r
+In-Reply-To: <87mwpiu4vi.fsf@zancas.localnet>\r
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+ protocol="application/pgp-signature";\r
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+\r
+This is an OpenPGP/MIME signed message (RFC 4880 and 3156)\r
+------enig2RGQXRKUTMSJPIALSVVQV\r
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+\r
+On 07/19/2013 08:10 AM, David Bremner wrote:\r
+>=20\r
+> The attached message is edited from one I managed to convince notmuch-e=\r
+macs to\r
+> send via some mishap with gpg-agent. It has an empty signature\r
+> part. Clearly this is wrong, but on the other hand, it should not cause=\r
+\r
+> notmuch show --decrypt to segmentation fault. As for the actual creatio=\r
+n\r
+> of the message, I suppose that's more likely a bug in emacs, if\r
+> anything.\r
+\r
+confirmed the bug in notmuch.\r
+\r
+here is the backtrace:\r
+\r
+>> Program received signal SIGSEGV, Segmentation fault.\r
+>> __strcasecmp_l_avx () at ../sysdeps/x86_64/multiarch/strcmp-sse42.S:16=\r
+4\r
+>> 164 ../sysdeps/x86_64/multiarch/strcmp-sse42.S: No such file or direct=\r
+ory.\r
+>> (gdb) bt\r
+>> #0 __strcasecmp_l_avx () at ../sysdeps/x86_64/multiarch/strcmp-sse42.=\r
+S:164\r
+>> #1 0x0000000000412973 in notmuch_crypto_get_context (crypto=3D0x7ffff=\r
+fffe248, protocol=3D0x0) at crypto.c:36\r
+>> #2 0x00000000004123a9 in _mime_node_create (part=3D0x6dc180, parent=3D=\r
+0x66a5a0) at mime-node.c:190\r
+>> #3 mime_node_child (parent=3Dparent@entry=3D0x66a5a0, child=3Dchild@e=\r
+ntry=3D0) at mime-node.c:310\r
+>> #4 0x000000000040f3ef in format_part_text (ctx=3D<optimized out>, sp=3D=\r
+0x6695a0, node=3D0x66a5a0, indent=3D0, params=3D0x7fffffffe230) at notmuc=\r
+h-show.c:592\r
+>> #5 0x000000000040eda9 in show_message (ctx=3Dctx@entry=3D0x6280f0, sp=\r
+=3Dsp@entry=3D0x6695a0, message=3Dmessage@entry=3D0x6697c0, indent=3Dinde=\r
+nt@entry=3D0, params=3Dparams@entry=3D0x7fffffffe230, format=3D0x61bd30 <=\r
+format_text>)\r
+>> at notmuch-show.c:905\r
+>> #6 0x000000000040ee15 in show_messages (ctx=3Dctx@entry=3D0x6280f0, f=\r
+ormat=3Dformat@entry=3D0x61bd30 <format_text>, sp=3Dsp@entry=3D0x6695a0, =\r
+messages=3D0x66a3a0, indent=3Dindent@entry=3D0, params=3Dparams@entry=3D0=\r
+x7fffffffe230)\r
+>> at notmuch-show.c:941\r
+>> #7 0x0000000000410955 in do_show (params=3D0x7fffffffe230, sp=3D0x669=\r
+5a0, format=3D0x61bd30 <format_text>, query=3D0x643a20, ctx=3D0x6280f0) a=\r
+t notmuch-show.c:1024\r
+>> #8 notmuch_show_command (ctx=3D0x6280f0, argc=3D<optimized out>, argv=\r
+=3D<optimized out>) at notmuch-show.c:1228\r
+>> #9 0x000000000040691c in main (argc=3D4, argv=3D0x7fffffffe6a8) at no=\r
+tmuch.c:329\r
+>> (gdb) up\r
+>> #1 0x0000000000412973 in notmuch_crypto_get_context (crypto=3D0x7ffff=\r
+fffe248, protocol=3D0x0) at crypto.c:36\r
+>> 36 if ((strcasecmp (protocol, "application/pgp-signature") =3D=3D =\r
+0)\r
+>> (gdb) p protocol\r
+>> $1 =3D 0x0\r
+>> (gdb)=20\r
+\r
+Looks like it's a pretty obvious fix -- test protocol for NULL before\r
+strcasecmp'ing it. sorry i don't have time to fix it right now.\r
+\r
+ --dkg\r
+\r
+\r
+------enig2RGQXRKUTMSJPIALSVVQV\r
+Content-Type: application/pgp-signature; name="signature.asc"\r
+Content-Description: OpenPGP digital signature\r
+Content-Disposition: attachment; filename="signature.asc"\r
+\r
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+Comment: Using GnuPG with Icedove - http://www.enigmail.net/\r
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+=aKlX\r
+-----END PGP SIGNATURE-----\r
+\r
+------enig2RGQXRKUTMSJPIALSVVQV--\r
projects / notmuch-archives.git / commitdiff