Check for single step support before calling user_enable_single_step(),
since user_enable_single_step() just BUG()s if support does not exist.
Needed by ARM.
Signed-off-by: Rabin Vincent <ra...@rab.in>
---
kernel/events/uprobes.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 98256bc..db4e3ab 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1450,7 +1450,8 @@ static struct uprobe *find_active_uprobe(unsigned long
bp_vaddr, int *is_swbp)
void __weak arch_uprobe_enable_step(struct arch_uprobe *arch)
{
- user_enable_single_step(current);
+ if (arch_has_single_step())
+ user_enable_single_step(current);
}
void __weak arch_uprobe_disable_step(struct arch_uprobe *arch)
--
1.7.9.5
--
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