diff options
| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2021-09-21 22:35:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-30 10:09:22 +0200 |
| commit | d4ec140e71585db72e83bbd6393a9ffc45b9565b (patch) | |
| tree | 0803924885fe59f80528f345e2e270d76f979dc1 /include/trace | |
| parent | 7751f609eadf36b1f53712bae430019c53a16eb0 (diff) | |
erofs: fix up erofs_lookup tracepoint
commit 93368aab0efc87288cac65e99c9ed2e0ffc9e7d0 upstream.
Fix up a misuse that the filename pointer isn't always valid in
the ring buffer, and we should copy the content instead.
Link: https://lore.kernel.org/r/20210921143531.81356-1-hsiangkao@linux.alibaba.com
Fixes: 13f06f48f7bf ("staging: erofs: support tracepoint")
Cc: stable@vger.kernel.org # 4.19+
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/erofs.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/trace/events/erofs.h b/include/trace/events/erofs.h index 27f5caa6299a..ecfad7641096 100644 --- a/include/trace/events/erofs.h +++ b/include/trace/events/erofs.h @@ -35,20 +35,20 @@ TRACE_EVENT(erofs_lookup, 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) ); |