Fix up a misuse that the filename pointer isn't always valid in
the ring buffer, and we should copy the content instead.
Fixes: 13f06f48f7bf ("staging: erofs: support tracepoint")
Cc: stable@xxxxxxxxxxxxxxx # 4.19+
Signed-off-by: Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx>
---
include/trace/events/erofs.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/trace/events/erofs.h b/include/trace/events/erofs.h
index bf9806f..db4f2ce 100644
--- a/include/trace/events/erofs.h
+++ b/include/trace/events/erofs.h
@@ -35,20 +35,20 @@
TP_STRUCT__entry(
__field(dev_t, dev )
__field(erofs_nid_t, nid )
- __field(const char *, name )
+ __string(name, dentry->d_name.name )
__field(unsigned int, flags )
),
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->nid = EROFS_I(dir)->nid;
- __entry->name = dentry->d_name.name;
+ __assign_str(name, dentry->d_name.name);
__entry->flags = flags;
),
TP_printk("dev = (%d,%d), pnid = %llu, name:%s, flags:%x",
show_dev_nid(__entry),
- __entry->name,
+ __get_str(name),
__entry->flags)
);
--
1.8.3.1
