From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 41fzvH0f3nzF1Pr for ; Wed, 1 Aug 2018 00:52:58 +1000 (AEST) Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w6VE8vSn101294 for ; Tue, 31 Jul 2018 10:52:56 -0400 Received: from e36.co.us.ibm.com (e36.co.us.ibm.com [32.97.110.154]) by mx0b-001b2d01.pphosted.com with ESMTP id 2kjs50ta0n-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 31 Jul 2018 10:52:49 -0400 Received: from localhost by e36.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 31 Jul 2018 08:51:01 -0600 From: Murilo Opsfelder Araujo To: linux-kernel@vger.kernel.org Cc: "Alastair D'Silva" , Andrew Donnellan , Balbir Singh , Benjamin Herrenschmidt , Christophe Leroy , Cyril Bur , "Eric W . Biederman" , Joe Perches , Michael Ellerman , Michael Neuling , Murilo Opsfelder Araujo , Nicholas Piggin , Paul Mackerras , Simon Guo , Sukadev Bhattiprolu , "Tobin C . Harding" , linuxppc-dev@lists.ozlabs.org Subject: [PATCH v3 5/9] powerpc/traps: Print signal name for unhandled signals Date: Tue, 31 Jul 2018 11:50:16 -0300 In-Reply-To: <20180731145020.14009-1-muriloo@linux.ibm.com> References: <20180731145020.14009-1-muriloo@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Message-Id: <20180731145020.14009-6-muriloo@linux.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This adds a human-readable name in the unhandled signal message. Before this patch, a page fault looked like: pandafault[6303]: unhandled signal 11 at 100007d0 nip 1000061c lr 7fff93c55100 code 2 in pandafault[10000000+10000] After this patch, a page fault looks like: pandafault[6352]: segfault (11) at 13a2a09f8 nip 13a2a086c lr 7fffb63e5100 code 2 in pandafault[13a2a0000+10000] Signed-off-by: Murilo Opsfelder Araujo --- arch/powerpc/kernel/traps.c | 39 +++++++++++++++++++++++++++++++++++-- 1 file changed, 37 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 1c4f06fca370..e71f12bca146 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -96,6 +96,41 @@ EXPORT_SYMBOL(__debugger_fault_handler); #define TM_DEBUG(x...) do { } while(0) #endif +static const char *signames[SIGRTMIN + 1] = { + "UNKNOWN", + "SIGHUP", // 1 + "SIGINT", // 2 + "SIGQUIT", // 3 + "SIGILL", // 4 + "unhandled trap", // 5 = SIGTRAP + "SIGABRT", // 6 = SIGIOT + "bus error", // 7 = SIGBUS + "floating point exception", // 8 = SIGFPE + "illegal instruction", // 9 = SIGILL + "SIGUSR1", // 10 + "segfault", // 11 = SIGSEGV + "SIGUSR2", // 12 + "SIGPIPE", // 13 + "SIGALRM", // 14 + "SIGTERM", // 15 + "SIGSTKFLT", // 16 + "SIGCHLD", // 17 + "SIGCONT", // 18 + "SIGSTOP", // 19 + "SIGTSTP", // 20 + "SIGTTIN", // 21 + "SIGTTOU", // 22 + "SIGURG", // 23 + "SIGXCPU", // 24 + "SIGXFSZ", // 25 + "SIGVTALRM", // 26 + "SIGPROF", // 27 + "SIGWINCH", // 28 + "SIGIO", // 29 = SIGPOLL = SIGLOST + "SIGPWR", // 30 + "SIGSYS", // 31 = SIGUNUSED +}; + /* * Trap & Exception support */ @@ -314,8 +349,8 @@ static void show_signal_msg(int signr, struct pt_regs *regs, int code, if (!unhandled_signal(current, signr)) return; - pr_info("%s[%d]: unhandled signal %d at %lx nip %lx lr %lx code %x", - current->comm, current->pid, signr, + pr_info("%s[%d]: %s (%d) at %lx nip %lx lr %lx code %x", + current->comm, current->pid, signames[signr], signr, addr, regs->nip, regs->link, code); print_vma_addr(KERN_CONT " in ", regs->nip); -- 2.17.1