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* [Bug c/52236] New: segfault in program that results from compiling sha512-hash.c
@ 2012-02-13 17:00 zooko at zooko dot com
2012-02-13 17:04 ` [Bug c/52236] " zooko at zooko dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: zooko at zooko dot com @ 2012-02-13 17:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52236
Bug #: 52236
Summary: segfault in program that results from compiling
sha512-hash.c
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zooko@zooko.com
Using this version of gcc-4.7.0 prerelease which is shipped in Fedora Rawhide:
4.7.0 20120126 (Red Hat 4.7.0-0.10), the resulting code segfaults. Valgrind
reports this:
==9709== Invalid read of size 1
==9709== at 0xB4FEE70: crypto_hash_sha512 (sha512-hash.c:40)
==9709== by 0xB4F8F23: crypto_sign_publickey (ed25519.c:30)
==9709== by 0xB4F7EEB: ed25519_publickey (ed25519module.c:48)
==9709== by 0x4F0A153: PyEval_EvalFrameEx (in
/usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4F0B7C0: PyEval_EvalCodeEx (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E9C2BA: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E78A1D: PyObject_Call (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E86EEF: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E78A1D: PyObject_Call (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4ECBC41: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4ECB8DB: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E78A1D: PyObject_Call (in /usr/lib64/libpython2.7.so.1.0)
==9709== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==9709==
{
<insert_a_suppression_name_here>
Memcheck:Addr1
fun:crypto_hash_sha512
fun:crypto_sign_publickey
fun:ed25519_publickey
fun:PyEval_EvalFrameEx
fun:PyEval_EvalCodeEx
obj:/usr/lib64/libpython2.7.so.1.0
fun:PyObject_Call
obj:/usr/lib64/libpython2.7.so.1.0
fun:PyObject_Call
obj:/usr/lib64/libpython2.7.so.1.0
obj:/usr/lib64/libpython2.7.so.1.0
fun:PyObject_Call
}
==9709==
==9709== Process terminating with default action of signal 11 (SIGSEGV)
==9709== Access not within mapped region at address 0x0
==9709== at 0xB4FEE70: crypto_hash_sha512 (sha512-hash.c:40)
==9709== by 0xB4F8F23: crypto_sign_publickey (ed25519.c:30)
==9709== by 0xB4F7EEB: ed25519_publickey (ed25519module.c:48)
==9709== by 0x4F0A153: PyEval_EvalFrameEx (in
/usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4F0B7C0: PyEval_EvalCodeEx (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E9C2BA: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E78A1D: PyObject_Call (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E86EEF: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E78A1D: PyObject_Call (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4ECBC41: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4ECB8DB: ??? (in /usr/lib64/libpython2.7.so.1.0)
==9709== by 0x4E78A1D: PyObject_Call (in /usr/lib64/libpython2.7.so.1.0)
More detail, including access to a buildbot which can reliably reproduce the
problem on Fedora Rawhide and demonstrate no such problem on several other
platforms, is here: https://tahoe-lafs.org/trac/pycryptopp/ticket/80
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c/52236] segfault in program that results from compiling sha512-hash.c
2012-02-13 17:00 [Bug c/52236] New: segfault in program that results from compiling sha512-hash.c zooko at zooko dot com
@ 2012-02-13 17:04 ` zooko at zooko dot com
2012-02-13 17:17 ` zooko at zooko dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: zooko at zooko dot com @ 2012-02-13 17:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52236
--- Comment #1 from Zooko Wilcox-O'Hearn <zooko at zooko dot com> 2012-02-13 17:03:49 UTC ---
The host is linux x86_64. More information about the platform is queried
automatically by the buildbot and archived here:
https://tahoe-lafs.org/buildbot-pycryptopp/builders/Ruben%20Fedora%20syslib/builds/44/steps/show-tool-versions/logs/stdio
platform: Linux-3.2.1-8.fc17.x86_64-x86_64-with-fedora-17-Rawhide
machine: x86_64
linux_distribution: ('Fedora', '17', 'Rawhide')
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c/52236] segfault in program that results from compiling sha512-hash.c
2012-02-13 17:00 [Bug c/52236] New: segfault in program that results from compiling sha512-hash.c zooko at zooko dot com
2012-02-13 17:04 ` [Bug c/52236] " zooko at zooko dot com
@ 2012-02-13 17:17 ` zooko at zooko dot com
2012-02-13 17:41 ` jakub at gcc dot gnu.org
2012-02-15 21:32 ` [Bug middle-end/52236] " zooko at zooko dot com
3 siblings, 0 replies; 5+ messages in thread
From: zooko at zooko dot com @ 2012-02-13 17:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52236
--- Comment #2 from Zooko Wilcox-O'Hearn <zooko at zooko dot com> 2012-02-13 17:17:37 UTC ---
I opened a ticket on launchpad.net with which to track the progress of this
issue across multiple other issue trackers: pycryptopp, GCC, Fedora, and
possibly DJB's "nacl" crypto library if there is any way to track such issues
other than emailing the author.
https://bugs.launchpad.net/pycryptopp/+bug/931542
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c/52236] segfault in program that results from compiling sha512-hash.c
2012-02-13 17:00 [Bug c/52236] New: segfault in program that results from compiling sha512-hash.c zooko at zooko dot com
2012-02-13 17:04 ` [Bug c/52236] " zooko at zooko dot com
2012-02-13 17:17 ` zooko at zooko dot com
@ 2012-02-13 17:41 ` jakub at gcc dot gnu.org
2012-02-15 21:32 ` [Bug middle-end/52236] " zooko at zooko dot com
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-02-13 17:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52236
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2012-02-13
CC| |jakub at gcc dot gnu.org
Ever Confirmed|0 |1
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-13 17:40:38 UTC ---
Please read http://gcc.gnu.org/bugs.html, you should provide a self-contained
and if possible small testcase, it could very well be a bug in the application
you are using. If you suspect a gcc bug, you can use use either a debugger or
brute-force - e.g. binary search in between objects compiled with various
compilation flags or various versions of the compiler (-O0 vs. standard flags,
or standard flags + -fno-strict-aliasing, etc.).
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug middle-end/52236] segfault in program that results from compiling sha512-hash.c
2012-02-13 17:00 [Bug c/52236] New: segfault in program that results from compiling sha512-hash.c zooko at zooko dot com
` (2 preceding siblings ...)
2012-02-13 17:41 ` jakub at gcc dot gnu.org
@ 2012-02-15 21:32 ` zooko at zooko dot com
3 siblings, 0 replies; 5+ messages in thread
From: zooko at zooko dot com @ 2012-02-15 21:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52236
Zooko Wilcox-O'Hearn <zooko at zooko dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution| |INVALID
--- Comment #4 from Zooko Wilcox-O'Hearn <zooko at zooko dot com> 2012-02-15 21:22:28 UTC ---
Thanks to Samuel Neves, the bug was identified in the application (pycryptopp),
not in gcc. Thanks!
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-02-15 21:23 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2012-02-13 17:00 [Bug c/52236] New: segfault in program that results from compiling sha512-hash.c zooko at zooko dot com
2012-02-13 17:04 ` [Bug c/52236] " zooko at zooko dot com
2012-02-13 17:17 ` zooko at zooko dot com
2012-02-13 17:41 ` jakub at gcc dot gnu.org
2012-02-15 21:32 ` [Bug middle-end/52236] " zooko at zooko dot com
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