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Message-Id: <1561528296-27444-1-git-send-email-guoren@kernel.org>
Date: Wed, 26 Jun 2019 13:51:36 +0800
From: guoren@...nel.org
To: arnd@...db.de
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
linux-csky@...r.kernel.org, Guo Ren <ren_guo@...ky.com>,
Mao Han <han_mao@...ky.com>
Subject: [PATCH] csky: Fixup libgcc unwind error
From: Guo Ren <ren_guo@...ky.com>
The struct rt_sigframe is also defined in libgcc/config/csky/linux-unwind.h
of gcc. Although there is no use for the first three word space, we must
keep them the same with linux-unwind.h for member position.
The BUG is found in glibc test with the tst-cancel02.
The BUG is from commit:bf2416829362 of linux-5.2-rc1 merge window.
Signed-off-by: Guo Ren <ren_guo@...ky.com>
Signed-off-by: Mao Han <han_mao@...ky.com>
Cc: Arnd Bergmann <arnd@...db.de>
---
arch/csky/kernel/signal.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/csky/kernel/signal.c b/arch/csky/kernel/signal.c
index 04a43cf..d47a338 100644
--- a/arch/csky/kernel/signal.c
+++ b/arch/csky/kernel/signal.c
@@ -39,6 +39,11 @@ static int save_fpu_state(struct sigcontext __user *sc)
#endif
struct rt_sigframe {
+ /*
+ * pad[3] is compatible with the same struct defined in
+ * gcc/libgcc/config/csky/linux-unwind.h
+ */
+ int pad[3];
struct siginfo info;
struct ucontext uc;
};
--
2.7.4
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