From 51dd709fee9479bf9a104b3562dadff3094b2f0d Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 17 Apr 2018 15:45:30 -0500 Subject: [PATCH] signal/ia64: Replace FPE_FIXME with FPE_FLTUNK Using an si_code of 0 that aliases with SI_USER is clearly the wrong thing todo, and causes problems in interesting ways. The newly defined FPE_FLTUNK semantically appears to fit the bill so use it instead. Given recent experience in this area odds are it will not break anything. Fixing it removes a hazard to kernel maintenance. Cc: Tony Luck Cc: Fenghua Yu Cc: linux-ia64@vger.kernel.org Fixes: 987159266c45 ("Linux version 2.3.48") Signed-off-by: "Eric W. Biederman" --- arch/ia64/include/uapi/asm/siginfo.h | 7 ------- arch/ia64/kernel/traps.c | 4 ++-- 2 files changed, 2 insertions(+), 9 deletions(-) diff --git a/arch/ia64/include/uapi/asm/siginfo.h b/arch/ia64/include/uapi/asm/siginfo.h index 5aa454ed89db0..52b5af4245116 100644 --- a/arch/ia64/include/uapi/asm/siginfo.h +++ b/arch/ia64/include/uapi/asm/siginfo.h @@ -27,11 +27,4 @@ #define __ISR_VALID_BIT 0 #define __ISR_VALID (1 << __ISR_VALID_BIT) -/* - * SIGFPE si_codes - */ -#ifdef __KERNEL__ -#define FPE_FIXME 0 /* Broken dup of SI_USER */ -#endif /* __KERNEL__ */ - #endif /* _UAPI_ASM_IA64_SIGINFO_H */ diff --git a/arch/ia64/kernel/traps.c b/arch/ia64/kernel/traps.c index 972873ed1ae50..c6f4932073a18 100644 --- a/arch/ia64/kernel/traps.c +++ b/arch/ia64/kernel/traps.c @@ -353,7 +353,7 @@ handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr) clear_siginfo(&siginfo); siginfo.si_signo = SIGFPE; siginfo.si_errno = 0; - siginfo.si_code = FPE_FIXME; /* default code */ + siginfo.si_code = FPE_FLTUNK; /* default code */ siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri); if (isr & 0x11) { siginfo.si_code = FPE_FLTINV; @@ -380,7 +380,7 @@ handle_fpu_swa (int fp_fault, struct pt_regs *regs, unsigned long isr) clear_siginfo(&siginfo); siginfo.si_signo = SIGFPE; siginfo.si_errno = 0; - siginfo.si_code = FPE_FIXME; /* default code */ + siginfo.si_code = FPE_FLTUNK; /* default code */ siginfo.si_addr = (void __user *) (regs->cr_iip + ia64_psr(regs)->ri); if (isr & 0x880) { siginfo.si_code = FPE_FLTOVF; -- 2.30.2