From patchwork Sat Mar 19 21:11:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Peter_M=C3=BCller?= X-Patchwork-Id: 5364 Return-Path: Received: from mail01.ipfire.org (mail01.haj.ipfire.org [172.28.1.202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) client-signature ECDSA (P-384)) (Client CN "mail01.haj.ipfire.org", Issuer "R3" (verified OK)) by web04.haj.ipfire.org (Postfix) with ESMTPS id 4KLYT96HJ9z3wt4 for ; Sat, 19 Mar 2022 21:11:09 +0000 (UTC) Received: from mail02.haj.ipfire.org (mail02.haj.ipfire.org [172.28.1.201]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) client-signature ECDSA (P-384)) (Client CN "mail02.haj.ipfire.org", Issuer "R3" (verified OK)) by mail01.ipfire.org (Postfix) with ESMTPS id 4KLYT92dgzz4Cx; Sat, 19 Mar 2022 21:11:09 +0000 (UTC) Received: from mail02.haj.ipfire.org (localhost [127.0.0.1]) by mail02.haj.ipfire.org (Postfix) with ESMTP id 4KLYT92flQz3020; Sat, 19 Mar 2022 21:11:09 +0000 (UTC) Received: from mail01.ipfire.org (mail01.haj.ipfire.org [172.28.1.202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) client-signature ECDSA (P-384)) (Client CN "mail01.haj.ipfire.org", Issuer "R3" (verified OK)) by mail02.haj.ipfire.org (Postfix) with ESMTPS id 4KLYT82BjLz2yXw for ; Sat, 19 Mar 2022 21:11:08 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by mail01.ipfire.org (Postfix) with ESMTPSA id 4KLYT74HK0z3Ny for ; Sat, 19 Mar 2022 21:11:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ipfire.org; s=202003rsa; t=1647724268; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=L4SflZxZ1Yq+lJEntmlVrWQj42Ge/IHUKvxLGHZCRkU=; b=HCHGbK+wsnV7xAKz6PKtg+4biOjXuCHvGGPKtJXr5JfroYWo/khsDJdE1RW87CayCyCjhn S1Zd6/rY173Abfe6tYozI4XR7+JMDn3JtOWPSBRW0GlW+Vg2kT09ue9y5BlBmAJoaV4gnN Mo1U5SfGBYirrs+lzzOD0aKwi0QdnehnHm8PWOCrXVBQiKXn/sKzUaMMk7dJAoHydg8x7T exuUxlZ0+cyZKuS/ZLclAFbenFgR4jLyeKhPXJfjFyRw+QldFE2Z5ZH9QDRAfgxw1QzUKS TCPGT804b8I6JOEcxGGuo5EHQqW2fUISjcfzQ74dsfZpRXQkST+UjZjuRiUQ1A== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=ipfire.org; s=202003ed25519; t=1647724268; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=L4SflZxZ1Yq+lJEntmlVrWQj42Ge/IHUKvxLGHZCRkU=; b=Q2UZzNnLJDz7XCi7v3tjoC4muu40ANBZvuHHMFbl6/ODKwkPalLKflymZ55v40+nAsdLkD 8bfYiKHCLy3wG7Cg== Message-ID: <6400eeaa-f3c2-e423-e0f1-c58431f89228@ipfire.org> Date: Sat, 19 Mar 2022 21:11:06 +0000 MIME-Version: 1.0 Subject: [PATCH 10/11] Kernel: Disable function and stack tracers Content-Language: en-US To: development@lists.ipfire.org References: <771528ff-9bb0-2073-4819-471ab16bb920@ipfire.org> From: =?utf-8?q?Peter_M=C3=BCller?= In-Reply-To: <771528ff-9bb0-2073-4819-471ab16bb920@ipfire.org> X-BeenThere: development@lists.ipfire.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: IPFire development talk List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: development-bounces@lists.ipfire.org Sender: "Development" grsecurity recommends to disable this on non-development systems for reducing attack surface. Since we never debug the kernel that deeply on a productive system, it makes sense to follow this recommendation. Signed-off-by: Peter Müller --- config/kernel/kernel.config.aarch64-ipfire | 13 ++----------- config/kernel/kernel.config.armv6l-ipfire | 13 ++----------- config/kernel/kernel.config.riscv64-ipfire | 13 ++----------- config/kernel/kernel.config.x86_64-ipfire | 17 ++--------------- 4 files changed, 8 insertions(+), 48 deletions(-) diff --git a/config/kernel/kernel.config.aarch64-ipfire b/config/kernel/kernel.config.aarch64-ipfire index 0fcbed4a2..5bd15cc48 100644 --- a/config/kernel/kernel.config.aarch64-ipfire +++ b/config/kernel/kernel.config.aarch64-ipfire @@ -126,8 +126,6 @@ CONFIG_TREE_RCU=y # CONFIG_RCU_EXPERT is not set CONFIG_SRCU=y CONFIG_TREE_SRCU=y -CONFIG_TASKS_RCU_GENERIC=y -CONFIG_TASKS_RUDE_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_NEED_SEGCBLIST=y # end of RCU Subsystem @@ -7410,7 +7408,6 @@ CONFIG_PSTORE_DEFLATE_COMPRESS_DEFAULT=y CONFIG_PSTORE_COMPRESS_DEFAULT="deflate" # CONFIG_PSTORE_CONSOLE is not set # CONFIG_PSTORE_PMSG is not set -# CONFIG_PSTORE_FTRACE is not set # CONFIG_PSTORE_RAM is not set # CONFIG_PSTORE_BLK is not set # CONFIG_SYSV_FS is not set @@ -8166,12 +8163,8 @@ CONFIG_GENERIC_TRACER=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y # CONFIG_BOOTTIME_TRACING is not set -CONFIG_FUNCTION_TRACER=y -CONFIG_FUNCTION_GRAPH_TRACER=y -CONFIG_DYNAMIC_FTRACE=y -CONFIG_DYNAMIC_FTRACE_WITH_REGS=y -CONFIG_FUNCTION_PROFILER=y -CONFIG_STACK_TRACER=y +# CONFIG_FUNCTION_TRACER is not set +# CONFIG_STACK_TRACER is not set # CONFIG_IRQSOFF_TRACER is not set CONFIG_SCHED_TRACER=y # CONFIG_HWLAT_TRACER is not set @@ -8186,7 +8179,6 @@ CONFIG_BRANCH_PROFILE_NONE=y CONFIG_UPROBE_EVENTS=y CONFIG_DYNAMIC_EVENTS=y CONFIG_PROBE_EVENTS=y -CONFIG_FTRACE_MCOUNT_RECORD=y CONFIG_FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY=y # CONFIG_SYNTH_EVENTS is not set # CONFIG_HIST_TRIGGERS is not set @@ -8194,7 +8186,6 @@ CONFIG_FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY=y # CONFIG_TRACEPOINT_BENCHMARK is not set CONFIG_RING_BUFFER_BENCHMARK=m # CONFIG_TRACE_EVAL_MAP_FILE is not set -# CONFIG_FTRACE_RECORD_RECURSION is not set # CONFIG_FTRACE_STARTUP_TEST is not set # CONFIG_RING_BUFFER_STARTUP_TEST is not set # CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set diff --git a/config/kernel/kernel.config.armv6l-ipfire b/config/kernel/kernel.config.armv6l-ipfire index 468c74112..06010f893 100644 --- a/config/kernel/kernel.config.armv6l-ipfire +++ b/config/kernel/kernel.config.armv6l-ipfire @@ -133,8 +133,6 @@ CONFIG_TREE_RCU=y # CONFIG_RCU_EXPERT is not set CONFIG_SRCU=y CONFIG_TREE_SRCU=y -CONFIG_TASKS_RCU_GENERIC=y -CONFIG_TASKS_RUDE_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_NEED_SEGCBLIST=y # end of RCU Subsystem @@ -7414,7 +7412,6 @@ CONFIG_PSTORE_DEFLATE_COMPRESS_DEFAULT=y CONFIG_PSTORE_COMPRESS_DEFAULT="deflate" # CONFIG_PSTORE_CONSOLE is not set # CONFIG_PSTORE_PMSG is not set -# CONFIG_PSTORE_FTRACE is not set # CONFIG_PSTORE_RAM is not set # CONFIG_PSTORE_BLK is not set # CONFIG_SYSV_FS is not set @@ -8132,12 +8129,8 @@ CONFIG_GENERIC_TRACER=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y # CONFIG_BOOTTIME_TRACING is not set -CONFIG_FUNCTION_TRACER=y -CONFIG_FUNCTION_GRAPH_TRACER=y -CONFIG_DYNAMIC_FTRACE=y -CONFIG_DYNAMIC_FTRACE_WITH_REGS=y -CONFIG_FUNCTION_PROFILER=y -CONFIG_STACK_TRACER=y +# CONFIG_FUNCTION_TRACER is not set +# CONFIG_STACK_TRACER is not set # CONFIG_IRQSOFF_TRACER is not set CONFIG_SCHED_TRACER=y # CONFIG_HWLAT_TRACER is not set @@ -8153,7 +8146,6 @@ CONFIG_BRANCH_PROFILE_NONE=y CONFIG_UPROBE_EVENTS=y CONFIG_DYNAMIC_EVENTS=y CONFIG_PROBE_EVENTS=y -CONFIG_FTRACE_MCOUNT_RECORD=y CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT=y # CONFIG_SYNTH_EVENTS is not set # CONFIG_HIST_TRIGGERS is not set @@ -8161,7 +8153,6 @@ CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT=y # CONFIG_TRACEPOINT_BENCHMARK is not set CONFIG_RING_BUFFER_BENCHMARK=m # CONFIG_TRACE_EVAL_MAP_FILE is not set -# CONFIG_FTRACE_RECORD_RECURSION is not set # CONFIG_FTRACE_STARTUP_TEST is not set # CONFIG_RING_BUFFER_STARTUP_TEST is not set # CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set diff --git a/config/kernel/kernel.config.riscv64-ipfire b/config/kernel/kernel.config.riscv64-ipfire index de975e3f0..6b0aa466f 100644 --- a/config/kernel/kernel.config.riscv64-ipfire +++ b/config/kernel/kernel.config.riscv64-ipfire @@ -119,8 +119,6 @@ CONFIG_TREE_RCU=y # CONFIG_RCU_EXPERT is not set CONFIG_SRCU=y CONFIG_TREE_SRCU=y -CONFIG_TASKS_RCU_GENERIC=y -CONFIG_TASKS_RUDE_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_NEED_SEGCBLIST=y # end of RCU Subsystem @@ -6047,7 +6045,6 @@ CONFIG_PSTORE_DEFLATE_COMPRESS_DEFAULT=y CONFIG_PSTORE_COMPRESS_DEFAULT="deflate" # CONFIG_PSTORE_CONSOLE is not set # CONFIG_PSTORE_PMSG is not set -# CONFIG_PSTORE_FTRACE is not set # CONFIG_PSTORE_RAM is not set # CONFIG_PSTORE_BLK is not set # CONFIG_SYSV_FS is not set @@ -6754,12 +6751,8 @@ CONFIG_GENERIC_TRACER=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y # CONFIG_BOOTTIME_TRACING is not set -CONFIG_FUNCTION_TRACER=y -CONFIG_FUNCTION_GRAPH_TRACER=y -CONFIG_DYNAMIC_FTRACE=y -CONFIG_DYNAMIC_FTRACE_WITH_REGS=y -CONFIG_FUNCTION_PROFILER=y -CONFIG_STACK_TRACER=y +# CONFIG_FUNCTION_TRACER is not set +# CONFIG_STACK_TRACER is not set # CONFIG_IRQSOFF_TRACER is not set CONFIG_SCHED_TRACER=y # CONFIG_HWLAT_TRACER is not set @@ -6774,14 +6767,12 @@ CONFIG_BRANCH_PROFILE_NONE=y CONFIG_UPROBE_EVENTS=y CONFIG_DYNAMIC_EVENTS=y CONFIG_PROBE_EVENTS=y -CONFIG_FTRACE_MCOUNT_RECORD=y CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT=y # CONFIG_SYNTH_EVENTS is not set # CONFIG_TRACE_EVENT_INJECT is not set # CONFIG_TRACEPOINT_BENCHMARK is not set CONFIG_RING_BUFFER_BENCHMARK=m # CONFIG_TRACE_EVAL_MAP_FILE is not set -# CONFIG_FTRACE_RECORD_RECURSION is not set # CONFIG_FTRACE_STARTUP_TEST is not set # CONFIG_RING_BUFFER_STARTUP_TEST is not set # CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire index 42275d26f..eee5e4a55 100644 --- a/config/kernel/kernel.config.x86_64-ipfire +++ b/config/kernel/kernel.config.x86_64-ipfire @@ -146,8 +146,6 @@ CONFIG_TREE_RCU=y # CONFIG_RCU_EXPERT is not set CONFIG_SRCU=y CONFIG_TREE_SRCU=y -CONFIG_TASKS_RCU_GENERIC=y -CONFIG_TASKS_RUDE_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_NEED_SEGCBLIST=y # end of RCU Subsystem @@ -476,7 +474,6 @@ CONFIG_LEGACY_VSYSCALL_NONE=y # CONFIG_CMDLINE_BOOL is not set # CONFIG_MODIFY_LDT_SYSCALL is not set CONFIG_HAVE_LIVEPATCH=y -# CONFIG_LIVEPATCH is not set # end of Processor type and features CONFIG_ARCH_HAS_ADD_PAGES=y @@ -6823,7 +6820,6 @@ CONFIG_PSTORE_DEFLATE_COMPRESS_DEFAULT=y CONFIG_PSTORE_COMPRESS_DEFAULT="deflate" # CONFIG_PSTORE_CONSOLE is not set # CONFIG_PSTORE_PMSG is not set -# CONFIG_PSTORE_FTRACE is not set # CONFIG_PSTORE_RAM is not set # CONFIG_PSTORE_BLK is not set # CONFIG_SYSV_FS is not set @@ -7604,14 +7600,8 @@ CONFIG_GENERIC_TRACER=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y # CONFIG_BOOTTIME_TRACING is not set -CONFIG_FUNCTION_TRACER=y -CONFIG_FUNCTION_GRAPH_TRACER=y -CONFIG_DYNAMIC_FTRACE=y -CONFIG_DYNAMIC_FTRACE_WITH_REGS=y -CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y -CONFIG_DYNAMIC_FTRACE_WITH_ARGS=y -CONFIG_FUNCTION_PROFILER=y -CONFIG_STACK_TRACER=y +# CONFIG_FUNCTION_TRACER is not set +# CONFIG_STACK_TRACER is not set # CONFIG_IRQSOFF_TRACER is not set CONFIG_SCHED_TRACER=y # CONFIG_HWLAT_TRACER is not set @@ -7627,15 +7617,12 @@ CONFIG_BRANCH_PROFILE_NONE=y CONFIG_UPROBE_EVENTS=y CONFIG_DYNAMIC_EVENTS=y CONFIG_PROBE_EVENTS=y -CONFIG_FTRACE_MCOUNT_RECORD=y -CONFIG_FTRACE_MCOUNT_USE_CC=y # CONFIG_SYNTH_EVENTS is not set # CONFIG_HIST_TRIGGERS is not set # CONFIG_TRACE_EVENT_INJECT is not set # CONFIG_TRACEPOINT_BENCHMARK is not set CONFIG_RING_BUFFER_BENCHMARK=m # CONFIG_TRACE_EVAL_MAP_FILE is not set -# CONFIG_FTRACE_RECORD_RECURSION is not set # CONFIG_FTRACE_STARTUP_TEST is not set # CONFIG_RING_BUFFER_STARTUP_TEST is not set # CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set