diff options
Diffstat (limited to 'kernel/events/uprobes.c')
| -rw-r--r-- | kernel/events/uprobes.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 0527379dac5b..071edcb3e62d 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1308,7 +1308,9 @@ pre_ssout(struct uprobe *uprobe, struct pt_regs *regs, unsigned long bp_vaddr) unsigned long xol_vaddr; int err; - utask = current->utask; + utask = get_utask(); + if (!utask) + return -ENOMEM; xol_vaddr = xol_get_insn_slot(uprobe); if (!xol_vaddr) @@ -1323,6 +1325,8 @@ pre_ssout(struct uprobe *uprobe, struct pt_regs *regs, unsigned long bp_vaddr) return err; } + utask->active_uprobe = uprobe; + utask->state = UTASK_SSTEP; return 0; } @@ -1474,7 +1478,6 @@ static void handler_chain(struct uprobe *uprobe, struct pt_regs *regs) */ static void handle_swbp(struct pt_regs *regs) { - struct uprobe_task *utask; struct uprobe *uprobe; unsigned long bp_vaddr; int uninitialized_var(is_swbp); @@ -1512,19 +1515,12 @@ static void handle_swbp(struct pt_regs *regs) if (unlikely(!test_bit(UPROBE_COPY_INSN, &uprobe->flags))) goto out; - utask = get_utask(); - if (!utask) - goto out; /* re-execute the instruction. */ - handler_chain(uprobe, regs); if (can_skip_sstep(uprobe, regs)) goto out; - if (!pre_ssout(uprobe, regs, bp_vaddr)) { - utask->active_uprobe = uprobe; - utask->state = UTASK_SSTEP; + if (!pre_ssout(uprobe, regs, bp_vaddr)) return; - } /* can_skip_sstep() succeeded, or restart if can't singlestep */ out: |