--On Wednesday, September 05, 2012 3:14 PM -0400 Bodo Moeller
<[email protected]> wrote:
On Wed, Sep 5, 2012 at 3:06 PM, Bodo Moeller <[email protected]> wrote:
We've managed on a few occasions now to reproduce an issue where OpenSSL
deadlocks while trying to acquire a mutex it already has. I filed
<http://rt.openssl.org/Ticket/Display.html?id=2866> about this issue. I
currently have a server where this has occurred, with the process in GDB.
However, the team that owns the server needs it back, so I wanted to know
if there is anything further the dev team would like me to gather from the
process before I drop out of GDB. So far we've encountered this issue on
both SLES11 SP2 and Ubuntu 12 LTS linux distributions.
Thanks -- I've managed to find the buggy code (crypto/asn1/x_pubkey.c
calls EVP_PKEY_free(ret) while holding lock CRYPTO_LOCK_EVP_PKEY, but
EVP_PKEY_free(ret) always tries to obtain that lock first). Will patch
this in a moment.
Actually I see this has been fixed already -- please try the latest 1.0.0
snapshot to confirm:
http://cvs.openssl.org/chngview?cn=22572
Yes, I've rebuilt with this patch in place. ;) However, it was extremely
difficult to trigger (2 times in 4 weeks of heavy testing), so it is
difficult for me to prove conclusively if this fixes it or not, although I
agree the code inspection implies it is fixed. ;)
--Quanah
--
Quanah Gibson-Mount
Sr. Member of Technical Staff
Zimbra, Inc
A Division of VMware, Inc.
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