From: Gao Xiang Date: Tue, 21 Sep 2021 14:35:30 +0000 (+0800) Subject: erofs: fix up erofs_lookup tracepoint X-Git-Tag: accepted/tizen/unified/20230118.172025~6284^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=93368aab0efc87288cac65e99c9ed2e0ffc9e7d0;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: Gao Xiang --- 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 @@ 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) );