From: guoren@kernel.org
To: arnd@arndb.de
Cc: guoren@kernel.org, linux-kernel@vger.kernel.org,
rostedt@goodmis.org, mingo@redhat.com, oleg@redhat.com,
linux-arch@vger.kernel.org, Guo Ren <ren_guo@c-sky.com>
Subject: [PATCH 02/14] csky: bugfix gdb coredump error.
Date: Mon, 31 Dec 2018 23:32:54 +0800 [thread overview]
Message-ID: <1546270384-4590-2-git-send-email-guoren@kernel.org> (raw)
In-Reply-To: <1546270384-4590-1-git-send-email-guoren@kernel.org>
From: Guo Ren <ren_guo@c-sky.com>
In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of
elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough
for coredump and no need full sizeof(struct pt_regs).
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reported-by: Lu Baoquan <lu.baoquan@intellif.com>
Reported-by: Liu Mao <liu.mao@intellif.com>
---
arch/csky/include/asm/elf.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/csky/include/asm/elf.h b/arch/csky/include/asm/elf.h
index 48b5366..d6dbc00 100644
--- a/arch/csky/include/asm/elf.h
+++ b/arch/csky/include/asm/elf.h
@@ -31,7 +31,12 @@ typedef unsigned long elf_greg_t;
typedef struct user_fp elf_fpregset_t;
-#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
+/*
+ * In gdb/bfd elf32-csky.c, csky_elf_grok_prstatus() use fixed size of
+ * elf_prstatus. It's 148 for abiv1 and 220 for abiv2, the size is enough
+ * for coredump and no need full sizeof(struct pt_regs).
+ */
+#define ELF_NGREG ((sizeof(struct pt_regs) / sizeof(elf_greg_t)) - 2)
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
--
2.7.4
next prev parent reply other threads:[~2018-12-31 15:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-31 15:32 [PATCH 01/14] csky: fixup abiv2 mmap(... O_SYNC) failed guoren
2018-12-31 15:32 ` guoren [this message]
2018-12-31 15:32 ` [PATCH 03/14] csky: fixup remove vdsp implement for kernel guoren
2018-12-31 15:32 ` [PATCH 04/14] csky: remove syscall_exit_work guoren
2018-12-31 15:32 ` [PATCH 05/14] csky: fixup save hi,lo,dspcr regs in switch_stack guoren
2018-12-31 15:32 ` [PATCH 07/14] csky: CPU-hotplug supported for SMP guoren
2018-12-31 15:32 ` [PATCH 08/14] csky: stacktrace supported guoren
2018-12-31 15:33 ` [PATCH 09/14] csky: optimize kernel panic print guoren
2018-12-31 15:33 ` [PATCH 10/14] csky: remove unused members in processor.h guoren
2018-12-31 15:33 ` [PATCH 11/14] csky: basic ftrace supported guoren
2018-12-31 15:33 ` [PATCH 12/14] csky: ftrace call graph supported guoren
2018-12-31 15:33 ` [PATCH 14/14] csky: Add EM_CSKY_OLD 39 guoren
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