From 35a2b533a261e2e43542df902bd9757a1deebfd5 Mon Sep 17 00:00:00 2001 From: Steve French Date: Sun, 22 May 2022 00:41:41 -0500 Subject: [PATCH] smb3: add trace point for oplock not found In order to debug problems with server potentially sending us an oplock that we don't recognize (or a race with close and oplock break) it would be helpful to have a dynamic trace point for this case. New tracepoint is called trace_smb3_oplock_not_found Signed-off-by: Steve French --- fs/cifs/smb2misc.c | 4 ++++ fs/cifs/trace.h | 1 + 2 files changed, 5 insertions(+) diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c index f236bea..17813c3 100644 --- a/fs/cifs/smb2misc.c +++ b/fs/cifs/smb2misc.c @@ -732,6 +732,10 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server) } spin_unlock(&cifs_tcp_ses_lock); cifs_dbg(FYI, "No file id matched, oplock break ignored\n"); + trace_smb3_oplock_not_found(0 /* no xid */, rsp->PersistentFid, + le32_to_cpu(rsp->hdr.Id.SyncId.TreeId), + le64_to_cpu(rsp->hdr.SessionId)); + return true; } diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h index 09d3dfe..2be5e0c 100644 --- a/fs/cifs/trace.h +++ b/fs/cifs/trace.h @@ -158,6 +158,7 @@ DEFINE_SMB3_FD_EVENT(flush_enter); DEFINE_SMB3_FD_EVENT(flush_done); DEFINE_SMB3_FD_EVENT(close_enter); DEFINE_SMB3_FD_EVENT(close_done); +DEFINE_SMB3_FD_EVENT(oplock_not_found); DECLARE_EVENT_CLASS(smb3_fd_err_class, TP_PROTO(unsigned int xid, -- 2.7.4