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| author | Helge Deller <deller@gmx.de> | 2013-11-18 22:12:11 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2013-11-19 23:36:18 +0100 |
| commit | 49d1cb2bcadfc5cea4b700a0ec6b957567889714 (patch) | |
| tree | 233750543d819d8a12fefdc0b244b883c2c4e5b3 /arch/parisc/mm | |
| parent | 38c7937379276a5ea8c54481205003af2f2b5694 (diff) | |
| download | op-kernel-dev-49d1cb2bcadfc5cea4b700a0ec6b957567889714.zip op-kernel-dev-49d1cb2bcadfc5cea4b700a0ec6b957567889714.tar.gz | |
parisc: improve SIGBUS/SIGSEGV error reporting
This patch fixes most of the Linux Test Project testcases, e.g. fstat05.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/mm')
| -rw-r--r-- | arch/parisc/mm/fault.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c index 7584a5d..9d08c71 100644 --- a/arch/parisc/mm/fault.c +++ b/arch/parisc/mm/fault.c @@ -282,16 +282,34 @@ bad_area: #endif switch (code) { case 15: /* Data TLB miss fault/Data page fault */ + /* send SIGSEGV when outside of vma */ + if (!vma || + address < vma->vm_start || address > vma->vm_end) { + si.si_signo = SIGSEGV; + si.si_code = SEGV_MAPERR; + break; + } + + /* send SIGSEGV for wrong permissions */ + if ((vma->vm_flags & acc_type) != acc_type) { + si.si_signo = SIGSEGV; + si.si_code = SEGV_ACCERR; + break; + } + + /* probably address is outside of mapped file */ + /* fall through */ case 17: /* NA data TLB miss / page fault */ case 18: /* Unaligned access - PCXS only */ si.si_signo = SIGBUS; - si.si_code = BUS_ADRERR; + si.si_code = (code == 18) ? BUS_ADRALN : 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_code = (code == 26) ? SEGV_ACCERR : SEGV_MAPERR; + break; } si.si_errno = 0; si.si_addr = (void __user *) address; |
