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: Helge Deller <deller@gmx.de>
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index df0d329..7584a5d 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -280,12 +280,22 @@
}
show_regs(regs);
#endif
- /* FIXME: actually we need to get the signo and code correct */
- si.si_signo = SIGSEGV;
+ 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_code = SEGV_MAPERR;
+ }
si.si_errno = 0;
- si.si_code = SEGV_MAPERR;
si.si_addr = (void __user *) address;
- force_sig_info(SIGSEGV, &si, current);
+ force_sig_info(si.si_signo, &si, current);
return;
}