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| author | Gao Xiang <hsiangkao@linux.alibaba.com> | 2021-09-21 16:35:30 +0200 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2021-09-23 17:21:34 +0200 |
| commit | 93368aab0efc87288cac65e99c9ed2e0ffc9e7d0 (patch) | |
| tree | f13d0a2f4841d08327fd4f9a77e6e48245579f29 | |
| parent | Linux 5.15-rc2 (diff) | |
| download | linux-93368aab0efc87288cac65e99c9ed2e0ffc9e7d0.tar.xz linux-93368aab0efc87288cac65e99c9ed2e0ffc9e7d0.zip | |
erofs: fix up erofs_lookup tracepoint
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>
| -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 bf9806fd1306..db4f2cec8360 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) ); |