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uprobes: Kill the bogus IS_ERR_VALUE(xol_vaddr) check

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utask->xol_vaddr is either zero or valid, remove the bogus
IS_ERR_VALUE() check in xol_free_insn_slot().

Signed-off-by: Oleg Nesterov <[email protected]>
Acked-by: Anton Arapov <[email protected]>
Acked-by: Srikar Dronamraju <[email protected]>
This commit is contained in:
Oleg Nesterov 2012-12-31 18:37:11 +01:00
commit af4355e91f
1 changed files with 1 additions and 2 deletions
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3
kernel/events/uprobes.c
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@ -1223,8 +1223,7 @@ static void xol_free_insn_slot(struct task_struct *tsk)
return;
slot_addr = tsk->utask->xol_vaddr;
if (unlikely(!slot_addr || IS_ERR_VALUE(slot_addr)))
if (unlikely(!slot_addr))
return;
area = tsk->mm->uprobes_state.xol_area;