[PATCH] x86_64: Make kernel math errors a die() now (3a848f63) · Commits · 戴 / test

There were no reports about the previous warning for FPU exceptions in the kernel, so make it a die() now. Also improve the error messages slightly. Signed-off-by:

Andi Kleen <ak@suse.de> Signed-off-by:

Andrew Morton <akpm@osdl.org> Signed-off-by:

Linus Torvalds <torvalds@osdl.org>

arch/x86_64/kernel/traps.c

+2 −8

Original line number	Diff line number	Diff line
		@@ -733,14 +733,8 @@ static int kernel_math_error(struct pt_regs regs, char str)
		return 1;
		}
		notify_die(DIE_GPF, str, regs, 0, 16, SIGFPE);
		#if 0
		/* This should be a die, but warn only for now */
		/* Illegal floating point operation in the kernel */
		die(str, regs, 0);
		#else
		printk(KERN_DEBUG "%s: %s at ", current->comm, str);
		printk_address(regs->rip);
		printk("\n");
		#endif
		return 0;
		}

		@@ -824,7 +818,7 @@ asmlinkage void do_simd_coprocessor_error(struct pt_regs *regs)

		conditional_sti(regs);
		if ((regs->cs & 3) == 0 &&
		kernel_math_error(regs, "simd math error"))
		kernel_math_error(regs, "kernel simd math error"))
		return;

		/*

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