diff options
Diffstat (limited to 'arch/s390/net/bpf_jit_comp.c')
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index a1a3a10c514c..e1e57a30ac66 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -624,16 +624,8 @@ static int get_probe_mem_regno(const u8 *insn) bool ex_handler_bpf(const struct exception_table_entry *x, struct pt_regs *regs) { - int regno; - u8 *insn; - regs->psw.addr = extable_fixup(x); - insn = (u8 *)__rewind_psw(regs->psw, regs->int_code >> 16); - regno = get_probe_mem_regno(insn); - if (WARN_ON_ONCE(regno < 0)) - /* JIT bug - unexpected instruction. */ - return false; - regs->gprs[regno] = 0; + regs->gprs[x->data] = 0; return true; } @@ -641,16 +633,17 @@ static int bpf_jit_probe_mem(struct bpf_jit *jit, struct bpf_prog *fp, int probe_prg, int nop_prg) { struct exception_table_entry *ex; + int reg, prg; s64 delta; u8 *insn; - int prg; int i; if (!fp->aux->extable) /* Do nothing during early JIT passes. */ return 0; insn = jit->prg_buf + probe_prg; - if (WARN_ON_ONCE(get_probe_mem_regno(insn) < 0)) + reg = get_probe_mem_regno(insn); + if (WARN_ON_ONCE(reg < 0)) /* JIT bug - unexpected probe instruction. */ return -1; if (WARN_ON_ONCE(probe_prg + insn_length(*insn) != nop_prg)) @@ -678,6 +671,7 @@ static int bpf_jit_probe_mem(struct bpf_jit *jit, struct bpf_prog *fp, return -1; ex->fixup = delta; ex->type = EX_TYPE_BPF; + ex->data = reg; jit->excnt++; } return 0; |