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[130.117.225.111]) by mx.google.com with ESMTPS id ffacd0b85a97d-4870bf7222dsi324794f8f.440.2026.09.15.10.23.03 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Sep 2026 10:23:03 -0700 (PDT) Received-SPF: pass (google.com: domain of vladimir.riabchun@virtuozzo.com designates 130.117.225.111 as permitted sender) client-ip=130.117.225.111; Authentication-Results: mx.google.com; dkim=pass header.i=@virtuozzo.com header.s=relay header.b=QH6BCkye; spf=pass (google.com: domain of vladimir.riabchun@virtuozzo.com designates 130.117.225.111 as permitted sender) smtp.mailfrom=vladimir.riabchun@virtuozzo.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=virtuozzo.com DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=MIME-Version:Message-ID:Date:Subject:From: Content-Type; bh=DGy5PLtN8ppChjfKhgl3cxznaikaDzAzlKsAemaTiaw=; b=QH6BCkyer+Dc uz448P2AO+sLoYPxEDmjuF2kS+ewbWt7yZXDcNhEQ1xKwEM+ceARR8Z8LxkG/R6LvTNXYLK7bZ9hG 4zIXcUxMrY9aYihBtnbEFWynRhplH1IPDfBzuU/RW6msza9RdJaEnAKbbSia3fWQFq80DX6SWmyFo qbEFCuIOLV6LWbRwEWBcJlL9xjaUPoQk8iFKm40ytDvJXEJRZkb6cUWOrmgpJFgoLRz3FRDYoUZ25 3fDnU9y3wpucgURWFGAsD/4XYVXCg06yCOQY8FTS9b51RFB106oW9M+PsRTMA+DdHbnCfQdFjNXyp yhkJ1ypN0eJK8kxApegvPQ==; Received: from [130.117.225.5] (helo=dev012.aci.vzint.dev) by relay.virtuozzo.com with esmtps (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1x6WpK-00GSrt-1n; Tue, 15 Sep 2026 19:22:53 +0200 From: Vladimir Riabchun To: devel@openvz.org Date: Tue, 15 Sep 2026 17:22:35 +0000 Message-ID: <156a2b6228d80112485c33b8384acf55b998a9a2.1789491989.git.vladimir.riabchun@virtuozzo.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: References: MIME-Version: 1.0 X-OZ-Fwd: true Subject: [Devel] [PATCH VZ10 v9 7/8] ve/printk: Don't use ve log outside task context X-BeenThere: devel@openvz.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: OpenVZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org get_exec_env() in interrupt context will return VE of the process that was interrupted. We don't want to leak logs to unrelated containers if we use ve_printk in a function that may be called in an interrupt. https://virtuozzo.atlassian.net/browse/VSTOR-135520 Signed-off-by: Vladimir Riabchun --- kernel/printk/printk.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index 8940b36e790b..90ecd7960800 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -560,7 +560,8 @@ struct log_state *ve_log_state(void) { struct log_state *log = &init_log_state; #ifdef CONFIG_VE - if (get_exec_env()->log_state) + /* get_exec_env() is not reliable outside task context */ + if (get_exec_env()->log_state && in_task()) log = get_exec_env()->log_state; #endif return log; @@ -2538,7 +2539,7 @@ static asmlinkage int ve_vprintk(int dst, const char *fmt, va_list args) va_copy(args2, args); if (ve_is_super(get_exec_env()) || (dst & VE0_LOG)) r = vprintk(fmt, args); - if (!ve_is_super(get_exec_env()) && (dst & VE_LOG)) + if (!ve_is_super(get_exec_env()) && (dst & VE_LOG) && in_task()) r = ve_vprintk_emit(0, LOGLEVEL_DEFAULT, NULL, fmt, args2); va_end(args2); @@ -2570,7 +2571,7 @@ static asmlinkage int ve_vprintk_deferred(int dst, const char *fmt, va_list args va_copy(args2, args); if (ve_is_super(get_exec_env()) || (dst & VE0_LOG)) r = vprintk_emit(0, LOGLEVEL_SCHED, NULL, fmt, args); - if (!ve_is_super(get_exec_env()) && (dst & VE_LOG)) + if (!ve_is_super(get_exec_env()) && (dst & VE_LOG) && in_task()) r = ve_vprintk_emit(0, LOGLEVEL_SCHED, NULL, fmt, args2); va_end(args2); -- 2.47.1 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel