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Commit 1f2048fd authored by Helge Deller's avatar Helge Deller
Browse files

parisc: signal fixup - SIGBUS vs. SIGSEGV 



Clean up code to send correct signal on invalid memory accesses:
Send SIGBUS instead of SIGSEGV for memory accesses outside of mmap'ed
areas

This fixes the mmap13 testcase from the Linux Test Project.

Signed-off-by: default avatarHelge Deller <deller@gmx.de>
parent 63379c13

arch/parisc/mm/fault.c

+14 −4
Original line number Diff line number Diff line
@@ -280,12 +280,22 @@ void do_page_fault(struct pt_regs *regs, unsigned long code, 
		}

		show_regs(regs);

#endif

		/* FIXME: actually we need to get the signo and code correct */

		switch (code) {

		case 15:	/* Data TLB miss fault/Data page fault */

		case 17:	/* NA data TLB miss / page fault */

		case 18:	/* Unaligned access - PCXS only */

			si.si_signo = SIGBUS;

			si.si_code = BUS_ADRERR;

			break;

		case 16:	/* Non-access instruction TLB miss fault */

		case 26:	/* PCXL: Data memory access rights trap */

		default:

			si.si_signo = SIGSEGV;

		si.si_errno = 0;

			si.si_code = SEGV_MAPERR;

		}

		si.si_errno = 0;

		si.si_addr = (void __user *) address;

		force_sig_info(SIGSEGV, &si, current);

		force_sig_info(si.si_signo, &si, current);

		return;

	}