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| author | Helge Deller <deller@gmx.de> | 2013-11-07 17:08:36 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2013-11-07 22:29:24 +0100 |
| commit | 1f2048fd8bc4219db821611da305a74f4b72b3c3 (patch) | |
| tree | be8e53b15accf5a770482f1e33ea4a0904fa25f7 | |
| parent | parisc: implement full version of access_ok() (diff) | |
| download | linux-1f2048fd8bc4219db821611da305a74f4b72b3c3.tar.xz linux-1f2048fd8bc4219db821611da305a74f4b72b3c3.zip | |
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>
| -rw-r--r-- | arch/parisc/mm/fault.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c index df0d32971cdf..7584a5df0fa4 100644 --- a/arch/parisc/mm/fault.c +++ b/arch/parisc/mm/fault.c @@ -280,12 +280,22 @@ bad_area: } 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; } |