[PATCH v2] MIPS64: signal: n64 kernel bugfix of MIPS32 o32 ABI sigaction syscall
From: Leonid Yegoshin <hidden>
Date: 2015-10-17 00:26:02
Also in:
lkml
Subsystem:
mips, the rest · Maintainers:
Thomas Bogendoerfer, Linus Torvalds
MIPS32 o32 ABI sigaction() processing on MIPS64 n64 kernel was incorrectly
set to processing aka rt_sigaction() variant only.
Fixed.
--
v2: Taken in account CONFIG vars interdependencies and conditional expression
simplified. As a result, the reverse problem fixed (introduced by v1).
Tested on all 3 ABIs.
--
---
arch/mips/include/asm/signal.h | 12 +++++++++---
arch/mips/kernel/signal.c | 2 +-
2 files changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/mips/include/asm/signal.h b/arch/mips/include/asm/signal.h
index 003e273eff4c..2292373ff11a 100644
--- a/arch/mips/include/asm/signal.h
+++ b/arch/mips/include/asm/signal.h@@ -11,11 +11,17 @@ #include <uapi/asm/signal.h> +#ifdef CONFIG_MIPS32_COMPAT +extern struct mips_abi mips_abi_32; -#ifdef CONFIG_TRAD_SIGNALS -#define sig_uses_siginfo(ka) ((ka)->sa.sa_flags & SA_SIGINFO) +#define sig_uses_siginfo(ka, abi) \ + ((abi != &mips_abi_32) ? 1 : \ + ((ka)->sa.sa_flags & SA_SIGINFO)) #else -#define sig_uses_siginfo(ka) (1) +#define sig_uses_siginfo(ka, abi) \ + (config_enabled(CONFIG_64BIT) ? 1 : \ + (config_enabled(CONFIG_TRAD_SIGNALS) ? \ + ((ka)->sa.sa_flags & SA_SIGINFO) : 1) ) #endif #include <asm/sigcontext.h>
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index bf792e2839a6..5f18d0b879e0 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c@@ -798,7 +798,7 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs) regs->regs[0] = 0; /* Don't deal with this again. */ } - if (sig_uses_siginfo(&ksig->ka)) + if (sig_uses_siginfo(&ksig->ka, abi)) ret = abi->setup_rt_frame(vdso + abi->vdso->off_rt_sigreturn, ksig, regs, oldset); else