From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AE0B12566DC; Mon, 3 Mar 2025 16:31:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741019466; cv=none; b=pCEtJbsPhGdHKiXIZ49gMEorfjUQucL6grEYsCJIx9KyPY8IlE8dzSgNPxVBEyzixw7nw5Y4vVZgaiuqo/Uuinq/YWXDFBRZW8kMQez9YA/T0szeWn5GbZbw4N7sFyAFdNdpaaOW4wgkXHR8tBtaPe11famBq7yPrNpkITXz1cI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741019466; c=relaxed/simple; bh=KTcV9V8+JgBuCHgkTTGINcMwCwPMTaH2dar9BWndPLk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=jRTBvpOHWkh8uVGmEIw9YDxCndl7RXxXDcvFZohR6eKM5fhp+ejx5aHFH9ZJYS7SpyHWfoWY/oNNpo07HmfCjVGnu0BnNY8KvyiYTzommJeiRd3PlnymYQv3zwUoR2ll9dwXsg5m0gEMnAWnsbMbgzu0pQ4SljYW0E3xRxBMUmE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dzmvVTbD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dzmvVTbD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82666C4CEE4; Mon, 3 Mar 2025 16:31:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741019466; bh=KTcV9V8+JgBuCHgkTTGINcMwCwPMTaH2dar9BWndPLk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dzmvVTbDobnwAKrPiKDXmZ//s2xaNVYUfAMM/Ix7o63dPWEi4CpJwEnDtLMJI7jKH 3nte809jvz+8+WSrCFpDgjQeRXlYn+mxzD2MEsgz3JKxADsjd3dZJo6UkoQS5sDa0v 2xELwBzaYfysQCrd6qHd6beGu2iLXvH7Gt8dnoMgxKEssyc/gY9GTvzzY+GaKOHL8y WG9Mb402SOZuQ/Qr2k2HbMtPCK9kG3nJCbQjErJSYBW+fB2/++LRCoxmlXLP4t5XjJ vaqMOua63YJ/v4UQrcOGfEekXOD33yCswCPgEu+2c4QlLoGnY3YG7QqJPpd1taJSYr JxvnVWKWcqMMQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ming Lei , Guangwu Zhang , Jens Axboe , Sasha Levin , linux-block@vger.kernel.org Subject: [PATCH AUTOSEL 6.12 16/17] block: fix 'kmem_cache of name 'bio-108' already exists' Date: Mon, 3 Mar 2025 11:30:28 -0500 Message-Id: <20250303163031.3763651-16-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250303163031.3763651-1-sashal@kernel.org> References: <20250303163031.3763651-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.12.17 Content-Transfer-Encoding: 8bit From: Ming Lei [ Upstream commit b654f7a51ffb386131de42aa98ed831f8c126546 ] Device mapper bioset often has big bio_slab size, which can be more than 1000, then 8byte can't hold the slab name any more, cause the kmem_cache allocation warning of 'kmem_cache of name 'bio-108' already exists'. Fix the warning by extending bio_slab->name to 12 bytes, but fix output of /proc/slabinfo Reported-by: Guangwu Zhang Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250228132656.2838008-1-ming.lei@redhat.com Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin --- block/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio.c b/block/bio.c index ac4d77c889322..43d4ae26f4758 100644 --- a/block/bio.c +++ b/block/bio.c @@ -77,7 +77,7 @@ struct bio_slab { struct kmem_cache *slab; unsigned int slab_ref; unsigned int slab_size; - char name[8]; + char name[12]; }; static DEFINE_MUTEX(bio_slab_lock); static DEFINE_XARRAY(bio_slabs); -- 2.39.5