diff options
Diffstat (limited to 'arch/sh/kernel/traps_32.c')
| -rw-r--r-- | arch/sh/kernel/traps_32.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c index 6aba9af79ea..69bb1652ecc 100644 --- a/arch/sh/kernel/traps_32.c +++ b/arch/sh/kernel/traps_32.c @@ -452,6 +452,12 @@ int handle_unaligned_access(insn_size_t instruction, struct pt_regs *regs, u_int rm; int ret, index; + /* + * XXX: We can't handle mixed 16/32-bit instructions yet + */ + if (instruction_size(instruction) != 2) + return -EINVAL; + index = (instruction>>8)&15; /* 0x0F00 */ rm = regs->regs[index]; @@ -619,9 +625,9 @@ asmlinkage void do_address_error(struct pt_regs *regs, se_user += 1; -#ifndef CONFIG_CPU_SH2A set_fs(USER_DS); - if (copy_from_user(&instruction, (u16 *)(regs->pc & ~1), 2)) { + if (copy_from_user(&instruction, (insn_size_t *)(regs->pc & ~1), + sizeof(instruction))) { set_fs(oldfs); goto uspace_segv; } @@ -633,7 +639,6 @@ asmlinkage void do_address_error(struct pt_regs *regs, "in \"%s\" pid=%d pc=0x%p ins=0x%04hx\n", current->comm, current->pid, (void *)regs->pc, instruction); -#endif if (se_usermode & 2) goto fixup; @@ -673,12 +678,6 @@ uspace_segv: } else { se_sys += 1; - if (se_kernmode_warn) - printk(KERN_NOTICE "Unaligned kernel access " - "on behalf of \"%s\" pid=%d pc=0x%p ins=0x%04hx\n", - current->comm, current->pid, (void *)regs->pc, - instruction); - if (regs->pc & 1) die("unaligned program counter", regs, error_code); @@ -692,6 +691,12 @@ uspace_segv: die("insn faulting in do_address_error", regs, 0); } + if (se_kernmode_warn) + printk(KERN_NOTICE "Unaligned kernel access " + "on behalf of \"%s\" pid=%d pc=0x%p ins=0x%04hx\n", + current->comm, current->pid, (void *)regs->pc, + instruction); + handle_unaligned_access(instruction, regs, &user_mem_access, 0); set_fs(oldfs); |