diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-26 15:08:07 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-26 15:08:07 -0800 |
| commit | 66673f13c10a817e27d71434c1198a4d874e0cd3 (patch) | |
| tree | 5699cfff89ad90caf4cb4aff33deee108c4a286e /arch/sparc/kernel/traps_64.c | |
| parent | bf50c903faba4ec7686ee8a570ac384b0f20814d (diff) | |
| parent | fcd26f7ae2ea5889134e8b3d60a42ce8b993c95f (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc64: Fix DAX handling via userspace access from kernel.
sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx()
[CVE-2009-0029] sparc: Enable syscall wrappers for 64-bit
sparc64: Initialize FHC/CLOCK LED platform_device 'id' field correctly.
sparc64: fix modpost failure
sparc64: fix readout of cpu/fpu type
Diffstat (limited to 'arch/sparc/kernel/traps_64.c')
| -rw-r--r-- | arch/sparc/kernel/traps_64.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c index c2d153d4658..d809c4ebb48 100644 --- a/arch/sparc/kernel/traps_64.c +++ b/arch/sparc/kernel/traps_64.c @@ -1,6 +1,6 @@ /* arch/sparc64/kernel/traps.c * - * Copyright (C) 1995,1997,2008 David S. Miller (davem@davemloft.net) + * Copyright (C) 1995,1997,2008,2009 David S. Miller (davem@davemloft.net) * Copyright (C) 1997,1999,2000 Jakub Jelinek (jakub@redhat.com) */ @@ -314,6 +314,21 @@ void sun4v_data_access_exception(struct pt_regs *regs, unsigned long addr, unsig return; if (regs->tstate & TSTATE_PRIV) { + /* Test if this comes from uaccess places. */ + const struct exception_table_entry *entry; + + entry = search_exception_tables(regs->tpc); + if (entry) { + /* Ouch, somebody is trying VM hole tricks on us... */ +#ifdef DEBUG_EXCEPTIONS + printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc); + printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n", + regs->tpc, entry->fixup); +#endif + regs->tpc = entry->fixup; + regs->tnpc = regs->tpc + 4; + return; + } printk("sun4v_data_access_exception: ADDR[%016lx] " "CTX[%04x] TYPE[%04x], going.\n", addr, ctx, type); |