From: Peter Zijlstra <peterz@infradead.org> To: x86@kernel.org Cc: peterz@infradead.org, linux-kernel@vger.kernel.org, rostedt@goodmis.org, mhiramat@kernel.org, bristot@redhat.com, jbaron@akamai.com, torvalds@linux-foundation.org, tglx@linutronix.de, mingo@kernel.org, namit@vmware.com, hpa@zytor.com, luto@kernel.org, ard.biesheuvel@linaro.org, jpoimboe@redhat.com, jeyu@kernel.org Subject: [PATCH v4 15/16] module: Move where we mark modules RO,X Date: Fri, 18 Oct 2019 09:35:40 +0200 [thread overview] Message-ID: <20191018074634.801435443@infradead.org> (raw) In-Reply-To: <20191018073525.768931536@infradead.org> Now that set_all_modules_text_*() is gone, nothing depends on the relation between ->state = COMING and the protection state anymore. This enables moving the protection changes later, such that the COMING notifier callbacks can more easily modify the text. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Jessica Yu <jeyu@kernel.org> --- kernel/module.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/kernel/module.c +++ b/kernel/module.c @@ -3683,10 +3683,6 @@ static int complete_formation(struct mod /* This relies on module_mutex for list integrity. */ module_bug_finalize(info->hdr, info->sechdrs, mod); - module_enable_ro(mod, false); - module_enable_nx(mod); - module_enable_x(mod); - /* Mark state as coming so strong_try_module_get() ignores us, * but kallsyms etc. can see us. */ mod->state = MODULE_STATE_COMING; @@ -3852,6 +3848,10 @@ static int load_module(struct load_info if (err) goto bug_cleanup; + module_enable_ro(mod, false); + module_enable_nx(mod); + module_enable_x(mod); + /* Module is ready to execute: parsing args may do that. */ after_dashes = parse_args(mod->name, mod->args, mod->kp, mod->num_kp, -32768, 32767, mod,
next prev parent reply other threads:[~2019-10-18 7:51 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-18 7:35 [PATCH v4 00/16] Rewrite x86/ftrace to use text_poke (and more) Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 01/16] x86/alternatives: Teach text_poke_bp() to emulate instructions Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 02/16] x86/alternatives: Update int3_emulate_push() comment Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 03/16] x86/alternatives,jump_label: Provide better text_poke() batching interface Peter Zijlstra 2019-10-21 8:48 ` Ingo Molnar 2019-10-21 9:21 ` Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 04/16] x86/alternatives: Add and use text_gen_insn() helper Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 05/16] x86/ftrace: Use text_poke() Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 06/16] x86/mm: Remove set_kernel_text_r[ow]() Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 07/16] x86/alternative: Add text_opcode_size() Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 08/16] x86/ftrace: Use text_gen_insn() Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 09/16] x86/alternative: Remove text_poke_loc::len Peter Zijlstra 2019-10-21 8:58 ` Ingo Molnar 2019-10-21 9:02 ` Ingo Molnar 2019-10-18 7:35 ` [PATCH v4 10/16] x86/alternative: Shrink text_poke_loc Peter Zijlstra 2019-10-21 9:01 ` Ingo Molnar 2019-10-21 9:25 ` Peter Zijlstra 2019-10-21 9:33 ` Ingo Molnar 2019-10-18 7:35 ` [PATCH v4 11/16] x86/kprobes: Convert to text-patching.h Peter Zijlstra 2019-10-21 14:57 ` Masami Hiramatsu 2019-10-18 7:35 ` [PATCH v4 12/16] x86/kprobes: Fix ordering Peter Zijlstra 2019-10-22 1:35 ` Masami Hiramatsu 2019-10-22 10:31 ` Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 13/16] arm/ftrace: Use __patch_text_real() Peter Zijlstra 2019-10-28 16:25 ` Will Deacon 2019-10-28 16:34 ` Peter Zijlstra 2019-10-28 16:35 ` Peter Zijlstra 2019-10-28 16:47 ` Will Deacon 2019-10-28 16:55 ` Peter Zijlstra 2019-10-18 7:35 ` [PATCH v4 14/16] module: Remove set_all_modules_text_*() Peter Zijlstra 2019-10-18 7:35 ` Peter Zijlstra [this message] 2019-10-21 13:53 ` [PATCH v4 15/16] module: Move where we mark modules RO,X Josh Poimboeuf 2019-10-21 14:14 ` Peter Zijlstra 2019-10-21 15:34 ` Peter Zijlstra 2019-10-21 15:44 ` Peter Zijlstra 2019-10-21 16:11 ` Peter Zijlstra 2019-10-22 11:31 ` Heiko Carstens 2019-10-22 12:31 ` Peter Zijlstra 2019-10-23 11:48 ` Peter Zijlstra 2019-10-23 15:16 ` Peter Zijlstra 2019-10-23 17:15 ` Josh Poimboeuf 2019-10-24 10:59 ` Peter Zijlstra 2019-10-24 18:31 ` Josh Poimboeuf 2019-10-24 20:33 ` Peter Zijlstra 2019-10-23 17:00 ` Josh Poimboeuf 2019-10-24 13:16 ` Peter Zijlstra 2019-10-25 6:44 ` Petr Mladek 2019-10-25 8:43 ` Peter Zijlstra 2019-10-25 10:06 ` Peter Zijlstra 2019-10-25 13:50 ` Josh Poimboeuf 2019-10-26 1:17 ` Josh Poimboeuf 2019-10-28 10:07 ` Peter Zijlstra 2019-10-28 10:43 ` Peter Zijlstra 2019-10-25 9:16 ` Peter Zijlstra 2019-10-22 2:21 ` Steven Rostedt 2019-10-22 20:24 ` Peter Zijlstra 2019-10-22 20:40 ` Steven Rostedt 2019-10-23 9:07 ` Peter Zijlstra 2019-10-23 18:52 ` Steven Rostedt 2019-10-24 10:16 ` Peter Zijlstra 2019-10-24 10:18 ` Peter Zijlstra 2019-10-24 15:00 ` Steven Rostedt 2019-10-24 16:43 ` Peter Zijlstra 2019-10-24 18:17 ` Steven Rostedt 2019-10-24 20:24 ` Peter Zijlstra 2019-10-24 20:28 ` Steven Rostedt 2019-10-18 7:35 ` [PATCH v4 16/16] ftrace: Merge ftrace_module_{init,enable}() Peter Zijlstra 2019-10-18 8:20 ` Peter Zijlstra 2019-10-21 9:09 ` [PATCH v4 00/16] Rewrite x86/ftrace to use text_poke (and more) Ingo Molnar 2019-10-21 13:38 ` Steven Rostedt
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