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Subject[PATCH] uprobe: Add uprobe_pre/post_sstep_notifier to NOKPROBE_SYMBOL
Date
uprobe_pre_sstep_notifier and uprobe_post_sstep_notifier are called from
debug exception handler, so blacklist them for kprobing.

Signed-off-by: Pratyush Anand <panand@redhat.com>
---
kernel/events/uprobes.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index b7a525ab2083..206e594cb65e 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -37,6 +37,7 @@
#include <linux/percpu-rwsem.h>
#include <linux/task_work.h>
#include <linux/shmem_fs.h>
+#include <linux/kprobes.h>

#include <linux/uprobes.h>

@@ -1997,6 +1998,7 @@ int uprobe_pre_sstep_notifier(struct pt_regs *regs)
set_thread_flag(TIF_UPROBE);
return 1;
}
+NOKPROBE_SYMBOL(uprobe_pre_sstep_notifier);

/*
* uprobe_post_sstep_notifier gets called in interrupt context as part of notifier
@@ -2014,6 +2016,7 @@ int uprobe_post_sstep_notifier(struct pt_regs *regs)
set_thread_flag(TIF_UPROBE);
return 1;
}
+NOKPROBE_SYMBOL(uprobe_post_sstep_notifier);

static struct notifier_block uprobe_exception_nb = {
.notifier_call = arch_uprobe_exception_notify,
--
2.5.5
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