From: Dmitry Dolgov <9erthalion6@gmail.com>
To: Michael Paquier <michael@paquier.xyz>
Cc: James Pang (chaolpan) <chaolpan@cisco.com>
Cc: pgsql-bugs@lists.postgresql.org <pgsql-bugs@lists.postgresql.org>
Subject: Re: BUG #17326: Postgres crashed when pg_reload_conf() with ssl certificate parameters
Date: Tue, 14 Dec 2021 16:46:04 +0100
Message-ID: <20211214154604.cfmv4kpo2inkt2pp@localhost> (raw)
In-Reply-To: <YbcqQXfYRhzCgud2@paquier.xyz>
References: <17326-d40bbb1386b6c9c3@postgresql.org>
<PH0PR11MB51915EF4E577B83F664F9AD8D66F9@PH0PR11MB5191.namprd11.prod.outlook.com>
<20211208134601.gauysdttc65aoeze@localhost>
<PH0PR11MB5191DFBF6685E3EF9632EAF0D6709@PH0PR11MB5191.namprd11.prod.outlook.com>
<PH0PR11MB5191F4B6C7B80F2DC2BC5F89D6719@PH0PR11MB5191.namprd11.prod.outlook.com>
<20211210142231.fvldmwwy4fr477h2@localhost>
<PH0PR11MB51910828B552926204514891D6749@PH0PR11MB5191.namprd11.prod.outlook.com>
<YbcqQXfYRhzCgud2@paquier.xyz>
> On Mon, Dec 13, 2021 at 08:10:57PM +0900, Michael Paquier wrote:
> On Mon, Dec 13, 2021 at 07:06:16AM +0000, James Pang (chaolpan) wrote:
> > Edit postgresql.conf to change ssl_certificate parameter ,
>
> Do you mean ssl_cert_file here? Also, something that's not completely
> clear to me is if this is a problem with a vanilla PostgreSQL
> instance or if this is related to the pgaudit extension set_user, as
> it has been mentioned as one potential origin of the problem upthread,
> but you are not telling if this is the case here. So what do you have
> for shared_preload_libraries in this crash?
>
> > #9 0x00007ff49a78059c in ssl_cert_clear_certs () from /lib64/libssl.so.1.1
> > #10 0x00007ff49a780645 in ssl_cert_free () from /lib64/libssl.so.1.1
> > #11 0x00007ff49a78a25c in SSL_CTX_free () from /lib64/libssl.so.1.1
> > #12 0x000000000068b6b8 in be_tls_init ()
> > #13 0x00000000007271e1 in SIGHUP_handler ()
>
> Why is secure_initialize() not showing up in this stack? That would
> be the caller of be_tls_init() in the SIGHUP handler. The version of
> OpenSSL you are linking your binaries to would be useful here. That
> would be a 1.1.0 or a 1.1.1, no? Any specific minor version letter?
I think I can actually reproduce the issue. In my case the stack is
fine, it contains secure_initialize, and overall it looks like some sort
of memory corruption -- at least openssl gets segfault because it can't
access some memory address it tries to verify in asn1_primitive_free.
Not sure yet why, investigating.
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To: pgsql-bugs@postgresql.org
Cc: 9erthalion6@gmail.com, michael@paquier.xyz, chaolpan@cisco.com, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17326: Postgres crashed when pg_reload_conf() with ssl certificate parameters
In-Reply-To: <20211214154604.cfmv4kpo2inkt2pp@localhost>
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