diff options
| -rw-r--r-- | arch/arm/mm/alignment.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c index 4b39d867ac1..f35e69e9c65 100644 --- a/arch/arm/mm/alignment.c +++ b/arch/arm/mm/alignment.c @@ -330,6 +330,9 @@ do_alignment_ldrdstrd(unsigned long addr, unsigned long instr, { unsigned int rd = RD_BITS(instr); + if (((rd & 1) == 1) || (rd == 14)) + goto bad; + ai_dword += 1; if (user_mode(regs)) @@ -361,7 +364,8 @@ do_alignment_ldrdstrd(unsigned long addr, unsigned long instr, } return TYPE_LDST; - + bad: + return TYPE_ERROR; fault: return TYPE_FAULT; } @@ -663,6 +667,8 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs) else if ((instr & 0x001000f0) == 0x000000d0 || /* LDRD */ (instr & 0x001000f0) == 0x000000f0) /* STRD */ handler = do_alignment_ldrdstrd; + else if ((instr & 0x01f00ff0) == 0x01000090) /* SWP */ + goto swp; else goto bad; break; @@ -733,6 +739,9 @@ do_alignment(unsigned long addr, unsigned int fsr, struct pt_regs *regs) do_bad_area(current, current->mm, addr, fsr, regs); return 0; + swp: + printk(KERN_ERR "Alignment trap: not handling swp instruction\n"); + bad: /* * Oops, we didn't handle the instruction. |