From: madvenka@linux.microsoft.com To: mark.rutland@arm.com, broonie@kernel.org, jpoimboe@redhat.com, ardb@kernel.org, nobuta.keiya@fujitsu.com, sjitindarsingh@gmail.com, catalin.marinas@arm.com, will@kernel.org, jmorris@namei.org, linux-arm-kernel@lists.infradead.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org, madvenka@linux.microsoft.com Subject: [PATCH v13 01/11] arm64: Remove NULL task check from unwind_frame() Date: Mon, 17 Jan 2022 08:55:58 -0600 [thread overview] Message-ID: <20220117145608.6781-2-madvenka@linux.microsoft.com> (raw) In-Reply-To: <20220117145608.6781-1-madvenka@linux.microsoft.com> From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com> Currently, there is a check for a NULL task in unwind_frame(). It is not needed since all current consumers pass a non-NULL task. Signed-off-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com> Reviewed-by: Mark Brown <broonie@kernel.org> Reviewed-by: Mark Rutland <mark.rutland@arm.com> --- arch/arm64/kernel/stacktrace.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 0fb58fed54cb..5f5bb35b7b41 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -69,9 +69,6 @@ static int notrace unwind_frame(struct task_struct *tsk, unsigned long fp = frame->fp; struct stack_info info; - if (!tsk) - tsk = current; - /* Final frame; nothing to unwind */ if (fp == (unsigned long)task_pt_regs(tsk)->stackframe) return -ENOENT; -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: madvenka@linux.microsoft.com To: mark.rutland@arm.com, broonie@kernel.org, jpoimboe@redhat.com, ardb@kernel.org, nobuta.keiya@fujitsu.com, sjitindarsingh@gmail.com, catalin.marinas@arm.com, will@kernel.org, jmorris@namei.org, linux-arm-kernel@lists.infradead.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org, madvenka@linux.microsoft.com Subject: [PATCH v13 01/11] arm64: Remove NULL task check from unwind_frame() Date: Mon, 17 Jan 2022 08:55:58 -0600 [thread overview] Message-ID: <20220117145608.6781-2-madvenka@linux.microsoft.com> (raw) In-Reply-To: <20220117145608.6781-1-madvenka@linux.microsoft.com> From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com> Currently, there is a check for a NULL task in unwind_frame(). It is not needed since all current consumers pass a non-NULL task. Signed-off-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com> Reviewed-by: Mark Brown <broonie@kernel.org> Reviewed-by: Mark Rutland <mark.rutland@arm.com> --- arch/arm64/kernel/stacktrace.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 0fb58fed54cb..5f5bb35b7b41 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -69,9 +69,6 @@ static int notrace unwind_frame(struct task_struct *tsk, unsigned long fp = frame->fp; struct stack_info info; - if (!tsk) - tsk = current; - /* Final frame; nothing to unwind */ if (fp == (unsigned long)task_pt_regs(tsk)->stackframe) return -ENOENT; -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-01-17 14:56 UTC|newest] Thread overview: 150+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <95691cae4f4504f33d0fc9075541b1e7deefe96f> 2022-01-17 14:55 ` [PATCH v13 00/11] arm64: Reorganize the unwinder and implement stack trace reliability checks madvenka 2022-01-17 14:55 ` madvenka 2022-01-17 14:55 ` madvenka [this message] 2022-01-17 14:55 ` [PATCH v13 01/11] arm64: Remove NULL task check from unwind_frame() madvenka 2022-01-17 14:55 ` [PATCH v13 02/11] arm64: Rename unwinder functions madvenka 2022-01-17 14:55 ` madvenka 2022-01-17 14:56 ` [PATCH v13 03/11] arm64: Rename stackframe to unwind_state madvenka 2022-01-17 14:56 ` madvenka 2022-01-17 14:56 ` [PATCH v13 04/11] arm64: Split unwind_init() madvenka 2022-01-17 14:56 ` madvenka 2022-02-02 18:44 ` Mark Brown 2022-02-02 18:44 ` Mark Brown 2022-02-03 0:26 ` Madhavan T. Venkataraman 2022-02-03 0:26 ` Madhavan T. Venkataraman 2022-02-03 0:39 ` Madhavan T. Venkataraman 2022-02-03 0:39 ` Madhavan T. Venkataraman 2022-02-03 11:29 ` Mark Brown 2022-02-03 11:29 ` Mark Brown 2022-02-15 13:07 ` Mark Rutland 2022-02-15 13:07 ` Mark Rutland 2022-02-15 18:04 ` Madhavan T. Venkataraman 2022-02-15 18:04 ` Madhavan T. Venkataraman 2022-01-17 14:56 ` [PATCH v13 05/11] arm64: Copy the task argument to unwind_state madvenka 2022-01-17 14:56 ` madvenka 2022-02-02 18:45 ` Mark Brown 2022-02-02 18:45 ` Mark Brown 2022-02-15 13:22 ` Mark Rutland 2022-02-15 13:22 ` Mark Rutland 2022-02-22 16:53 ` Madhavan T. Venkataraman 2022-02-22 16:53 ` Madhavan T. Venkataraman 2022-01-17 14:56 ` [PATCH v13 06/11] arm64: Use stack_trace_consume_fn and rename args to unwind() madvenka 2022-01-17 14:56 ` madvenka 2022-02-02 18:46 ` Mark Brown 2022-02-02 18:46 ` Mark Brown 2022-02-03 0:34 ` Madhavan T. Venkataraman 2022-02-03 0:34 ` Madhavan T. Venkataraman 2022-02-03 11:30 ` Mark Brown 2022-02-03 11:30 ` Mark Brown 2022-02-03 14:45 ` Madhavan T. Venkataraman 2022-02-03 14:45 ` Madhavan T. Venkataraman 2022-02-15 13:39 ` Mark Rutland 2022-02-15 13:39 ` Mark Rutland 2022-02-15 18:12 ` Madhavan T. Venkataraman 2022-02-15 18:12 ` Madhavan T. Venkataraman 2022-03-07 16:51 ` Madhavan T. Venkataraman 2022-03-07 16:51 ` Madhavan T. Venkataraman 2022-03-07 17:01 ` Mark Brown 2022-03-07 17:01 ` Mark Brown 2022-03-08 22:00 ` Madhavan T. Venkataraman 2022-03-08 22:00 ` Madhavan T. Venkataraman 2022-03-09 11:47 ` Mark Brown 2022-03-09 11:47 ` Mark Brown 2022-03-09 15:34 ` Madhavan T. Venkataraman 2022-03-09 15:34 ` Madhavan T. Venkataraman 2022-03-10 8:33 ` Miroslav Benes 2022-03-10 8:33 ` Miroslav Benes 2022-03-10 12:36 ` Madhavan T. Venkataraman 2022-03-10 12:36 ` Madhavan T. Venkataraman 2022-03-16 3:43 ` Josh Poimboeuf 2022-03-16 3:43 ` Josh Poimboeuf 2022-04-08 14:44 ` Mark Rutland 2022-04-08 14:44 ` Mark Rutland 2022-04-08 17:58 ` Mark Rutland 2022-04-08 17:58 ` Mark Rutland 2022-04-10 17:42 ` Madhavan T. Venkataraman 2022-04-10 17:42 ` Madhavan T. Venkataraman 2022-04-10 17:33 ` Madhavan T. Venkataraman 2022-04-10 17:33 ` Madhavan T. Venkataraman 2022-04-10 17:45 ` Madhavan T. Venkataraman 2022-04-10 17:45 ` Madhavan T. Venkataraman 2022-01-17 14:56 ` [PATCH v13 07/11] arm64: Make the unwind loop in unwind() similar to other architectures madvenka 2022-01-17 14:56 ` madvenka 2022-01-17 14:56 ` [PATCH v13 08/11] arm64: Introduce stack trace reliability checks in the unwinder madvenka 2022-01-17 14:56 ` madvenka 2022-01-17 14:56 ` [PATCH v13 09/11] arm64: Create a list of SYM_CODE functions, check return PC against list madvenka 2022-01-17 14:56 ` madvenka 2022-01-17 14:56 ` [PATCH v13 10/11] arm64: Introduce arch_stack_walk_reliable() madvenka 2022-01-17 14:56 ` madvenka 2022-01-17 14:56 ` [PATCH v13 11/11] arm64: Select HAVE_RELIABLE_STACKTRACE madvenka 2022-01-17 14:56 ` madvenka 2022-01-25 5:21 ` nobuta.keiya 2022-01-25 5:21 ` nobuta.keiya 2022-01-25 13:43 ` Madhavan T. Venkataraman 2022-01-25 13:43 ` Madhavan T. Venkataraman 2022-01-26 10:20 ` nobuta.keiya 2022-01-26 10:20 ` nobuta.keiya 2022-01-26 17:14 ` Madhavan T. Venkataraman 2022-01-26 17:14 ` Madhavan T. Venkataraman 2022-01-27 1:13 ` nobuta.keiya 2022-01-27 1:13 ` nobuta.keiya 2022-01-26 17:16 ` Mark Brown 2022-01-26 17:16 ` Mark Brown 2022-04-07 20:25 ` [RFC PATCH v1 0/9] arm64: livepatch: Use DWARF Call Frame Information for frame pointer validation madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 1/9] objtool: Parse DWARF Call Frame Information in object files madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 2/9] objtool: Generate DWARF rules and place them in a special section madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 3/9] dwarf: Build the kernel with DWARF information madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 4/9] dwarf: Implement DWARF rule processing in the kernel madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 5/9] dwarf: Implement DWARF support for modules madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 6/9] arm64: unwinder: Add a reliability check in the unwinder based on DWARF CFI madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 7/9] arm64: dwarf: Implement unwind hints madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 8/9] dwarf: Miscellaneous changes required for enabling livepatch madvenka 2022-04-07 20:25 ` madvenka 2022-04-07 20:25 ` [RFC PATCH v1 9/9] dwarf: Enable livepatch for ARM64 madvenka 2022-04-07 20:25 ` madvenka 2022-04-08 0:21 ` [RFC PATCH v1 0/9] arm64: livepatch: Use DWARF Call Frame Information for frame pointer validation Josh Poimboeuf 2022-04-08 0:21 ` Josh Poimboeuf 2022-04-08 11:41 ` Peter Zijlstra 2022-04-08 11:41 ` Peter Zijlstra 2022-04-11 17:26 ` Madhavan T. Venkataraman 2022-04-11 17:26 ` Madhavan T. Venkataraman 2022-04-11 17:18 ` Madhavan T. Venkataraman 2022-04-11 17:18 ` Madhavan T. Venkataraman 2022-04-12 8:32 ` Chen Zhongjin 2022-04-12 8:32 ` Chen Zhongjin 2022-04-16 0:56 ` Josh Poimboeuf 2022-04-16 0:56 ` Josh Poimboeuf 2022-04-18 12:28 ` Chen Zhongjin 2022-04-18 12:28 ` Chen Zhongjin 2022-04-18 16:11 ` Josh Poimboeuf 2022-04-18 16:11 ` Josh Poimboeuf 2022-04-18 18:38 ` Madhavan T. Venkataraman 2022-04-18 18:38 ` Madhavan T. Venkataraman [not found] ` <844b3ede-eddb-cbe6-80e0-3529e2da2eb6@huawei.com> 2022-04-12 17:27 ` Madhavan T. Venkataraman 2022-04-12 17:27 ` Madhavan T. Venkataraman 2022-04-16 1:07 ` Josh Poimboeuf 2022-04-16 1:07 ` Josh Poimboeuf 2022-04-14 14:11 ` Madhavan T. Venkataraman 2022-04-14 14:11 ` Madhavan T. Venkataraman 2022-04-08 10:55 ` Peter Zijlstra 2022-04-08 10:55 ` Peter Zijlstra 2022-04-08 11:54 ` Peter Zijlstra 2022-04-08 11:54 ` Peter Zijlstra 2022-04-08 14:34 ` Josh Poimboeuf 2022-04-08 14:34 ` Josh Poimboeuf 2022-04-10 17:47 ` Madhavan T. Venkataraman 2022-04-10 17:47 ` Madhavan T. Venkataraman 2022-04-11 16:34 ` Josh Poimboeuf 2022-04-11 16:34 ` Josh Poimboeuf 2022-04-08 12:06 ` Peter Zijlstra 2022-04-08 12:06 ` Peter Zijlstra 2022-04-11 17:35 ` Madhavan T. Venkataraman 2022-04-11 17:35 ` Madhavan T. Venkataraman
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20220117145608.6781-2-madvenka@linux.microsoft.com \ --to=madvenka@linux.microsoft.com \ --cc=ardb@kernel.org \ --cc=broonie@kernel.org \ --cc=catalin.marinas@arm.com \ --cc=jmorris@namei.org \ --cc=jpoimboe@redhat.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=live-patching@vger.kernel.org \ --cc=mark.rutland@arm.com \ --cc=nobuta.keiya@fujitsu.com \ --cc=sjitindarsingh@gmail.com \ --cc=will@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.