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parisc: signal fixup - SIGBUS vs. SIGSEGV

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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>
This commit is contained in:
Helge Deller 2013-11-07 17:08:36 +01:00
parent 63379c1353
commit 1f2048fd8b
1 changed files with 14 additions and 4 deletions
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18
arch/parisc/mm/fault.c
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@ -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 */
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;
}