Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vrw4Q-00DkdE-2b for pgsql-hackers@arkaria.postgresql.org; Mon, 16 Feb 2026 10:43:14 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vrw4P-001aIQ-1k for pgsql-hackers@arkaria.postgresql.org; Mon, 16 Feb 2026 10:43:13 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vrw4P-001aII-0u for pgsql-hackers@lists.postgresql.org; Mon, 16 Feb 2026 10:43:13 +0000 Received: from relay3-d.mail.gandi.net ([2001:4b98:dc4:8::223]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1vrw4N-000000010H1-0lHH for pgsql-hackers@postgresql.org; Mon, 16 Feb 2026 10:43:13 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id 56F101FD00; Mon, 16 Feb 2026 10:43:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vondra.me; s=gm1; t=1771238588; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=G7JsKFN5cLl6osM0pWM4K1ZOlcvLhV+EwEg2XtSGUnU=; b=nXM8yvHhbef6IQHFqFmJT1NGJCa6Ch105+bVTB7TFH9a8PhHpd5nSwt2TS04P4uYkt4EGJ 8gkgV+EPGKIEER7NjVDVsIKbiy9ThUR6KzHalBBqkiJk0hQ3pA+sjp8BMO+RpLxmLWXX4p Q0EAJUx2Go52PMH7TrxuW2jcFoz0NZZvcQ4RwuXn1AYq6wJe8LqdEXBY5nAC11TzDwKt6L egW5qJb68/dFMHYMVk+n0+4HTHr11KwExfQZXA6pNJmHx7h4WcS21v7ymzO0+pxLupaM2V LQuraF82UlT8yefgDMjB0mC858LhlpOg8rZa4dgdgjehLF73GBqf4xRgfeA7dg== Message-ID: Date: Mon, 16 Feb 2026 11:43:07 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Crash related to Shared Memory To: Reshmithaa Cc: pgsql-hackers References: <19c6080f721.5fb020da63611.6613570086464859270@zohocorp.com> <19c659d7b36.2b06478976593.2792647703134538263@zohocorp.com> <19c65bd9773.26e5e71b69048.4962060727905649666@zohocorp.com> Content-Language: en-US From: Tomas Vondra In-Reply-To: <19c65bd9773.26e5e71b69048.4962060727905649666@zohocorp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-GND-Sasl: tomas@vondra.me X-GND-Score: 0 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgddvudeiieeiucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecunecujfgurhepkfffgggfuffvvehfhfgjtgfgsehtjeertddtvdejnecuhfhrohhmpefvohhmrghsucggohhnughrrgcuoehtohhmrghssehvohhnughrrgdrmhgvqeenucggtffrrghtthgvrhhnpeeludegieekgfelhffgffeuvdelteetveeghfdvieekfeduudduvdfhvedufefhveenucfkphepkeeirdegledrvdeftddrvddtieenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeekiedrgeelrddvfedtrddvtdeipdhhvghloheplgdutddrudefjedrtddrvdgnpdhmrghilhhfrhhomhepthhomhgrshesvhhonhgurhgrrdhmvgdpqhhiugepheeihfdutdduhffftddtpdhmohguvgepshhmthhpohhuthdpnhgspghrtghpthhtohepvddprhgtphhtthhopehrvghshhhmihhthhgrrgdrsgesiihohhhotghorhhprdgtohhmpdhrtghpthhtohepphhgshhqlhdqhhgrtghkvghrshesphhoshhtghhrvghsqhhlrdhorhhg X-GND-State: clean List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On 2/16/26 10:17, Reshmithaa wrote: > Hi, > > > The second trace > > > unfortunately does not show what happened to PID 2037344 before it > > > crashes, which would be very interesting to know. Was it an OOM too? > > Kindly find the attachment below. > I have no idea what LOG: 00000: PRIMITIVE NOT USED: map_pg_backend_pid LOCATION: LogPrimFunctions, primitiveMgr.cpp:39 STATEMENT: select pg_backend_pid() means, that's clearly something in your fork/extension. regards -- Tomas Vondra