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Fri, 13 Mar 2026 14:32:33 +0100 Received: from [::1] (helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1w12XK-00000009ULB-2vnl; Fri, 13 Mar 2026 14:26:42 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Fri, 13 Mar 2026 14:24:54 +0100 Message-ID: <20260313132631.2257573-11-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260313132631.2257573-1-a.fatoum@pengutronix.de> References: <20260313132631.2257573-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260313_133236_479709_0CECF5E1 X-CRM114-Status: GOOD ( 12.59 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 198.137.202.133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW,RCVD_IN_VALIDITY_RPBL_BLOCKED, RCVD_IN_VALIDITY_SAFE_BLOCKED,SPF_HELO_NONE,SPF_NONE autolearn=no autolearn_force=no version=3.4.2 Subject: [PATCH v2025.09.y 10/58] bug: add support for CONFIG_DEBUG_BUGVERBOSE X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) From: Ahmad Fatoum This can be used to remove panic strings from barebox, when there is no way to look at them anyway. Also add a CONFIG_BUG symbol as it will make it easier to port kernel code that checks for the symbol without having to patch it. (cherry picked from commit 32755105119edba33ec62b13217381610b04e4a8) Signed-off-by: Ahmad Fatoum Link: https://lore.barebox.org/20251128125616.136559-2-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer --- common/Kconfig | 11 +++++++++++ include/asm-generic/bug.h | 26 +++++++++++++++++++------- 2 files changed, 30 insertions(+), 7 deletions(-) diff --git a/common/Kconfig b/common/Kconfig index 3a2044585a3d..c01e53eef31d 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -902,6 +902,17 @@ config PBL_CONSOLE must be running at the address it's linked at and bss must be cleared. On ARM that would be after setup_c(). +config BUG + def_bool y + +config DEBUG_BUGVERBOSE + bool "Verbose BUG() reporting" + depends on BUG + default y + help + Say Y here to make WARN_ONCE() and BUG() panics output the file name + and line number of the BUG/WARN call as well as the EIP and oops trace. + source "common/ratp/Kconfig" config PARTITION diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index 389327adfc5d..ca75b1c7646e 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h @@ -6,15 +6,27 @@ #include #include -#define BUG() do { \ - printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \ - panic("BUG!"); \ +#ifdef CONFIG_DEBUG_BUGVERBOSE +#define __bug_printf printf +#define __bug_panic panic +#define __bug_dump_stack dump_stack +#else +#define __bug_printf no_printf +#define __bug_panic panic_no_stacktrace +#define __bug_dump_stack (void)0 +#endif + +#define BUG() do { \ + __bug_printf("BUG: failure at %s:%d/%s()!\n", \ + __FILE__, __LINE__, __FUNCTION__); \ + __bug_panic("BUG!"); \ } while (0) #define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0) -#define __WARN() do { \ - printf("WARNING: at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \ +#define __WARN() do { \ + __bug_printf("WARNING: at %s:%d/%s()!\n", \ + __FILE__, __LINE__, __FUNCTION__); \ } while (0) #ifndef WARN_ON @@ -31,7 +43,7 @@ int __ret_warn_on = !!(condition); \ if (unlikely(__ret_warn_on)) { \ __WARN(); \ - printf("WARNING: " format); \ + __bug_printf("WARNING: " format); \ } \ unlikely(__ret_warn_on); \ }) @@ -44,7 +56,7 @@ if (unlikely(__ret_warn_once)) { \ if (WARN(!__warned, format)) { \ __warned = 1; \ - dump_stack(); \ + __bug_dump_stack(); \ } \ } \ unlikely(__ret_warn_once); \ -- 2.47.3