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@vger.kernel.org # 4.19+ Signed-off-by: Gao Xiang hsiangkao@linux.alibaba.com --- 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) );