From 7c05eae8db9296e28b5dd34deec1ca5ef96d0f08 Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 15 Jun 2022 22:40:23 -0500 Subject: smb3: add trace point for SMB2_set_eof In order to debug problems with file size being reported incorrectly temporarily (in this case xfstest generic/584 intermittent failure) we need to add trace point for the non-compounded code path where we set the file size (SMB2_set_eof). The new trace point is: "smb3_set_eof" Here is sample output from the tracepoint: TASK-PID CPU# ||||| TIMESTAMP FUNCTION | | | ||||| | | xfs_io-75403 [002] ..... 95219.189835: smb3_set_eof: xid=221 sid=0xeef1cbd2 tid=0x27079ee6 fid=0x52edb58c offset=0x100000 aio-dio-append--75418 [010] ..... 95219.242402: smb3_set_eof: xid=226 sid=0xeef1cbd2 tid=0x27079ee6 fid=0xae89852d offset=0x0 Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French --- fs/cifs/smb2pdu.c | 2 ++ fs/cifs/trace.h | 38 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) (limited to 'fs') diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index eaf975f1ad89..b515140bad8d 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -5154,6 +5154,8 @@ SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, data = &info; size = sizeof(struct smb2_file_eof_info); + trace_smb3_set_eof(xid, persistent_fid, tcon->tid, tcon->ses->Suid, le64_to_cpu(*eof)); + return send_set_info(xid, tcon, persistent_fid, volatile_fid, pid, FILE_END_OF_FILE_INFORMATION, SMB2_O_INFO_FILE, 0, 1, &data, &size); diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h index 2be5e0c8564d..6b88dc2e364f 100644 --- a/fs/cifs/trace.h +++ b/fs/cifs/trace.h @@ -121,6 +121,44 @@ DEFINE_SMB3_RW_DONE_EVENT(query_dir_done); DEFINE_SMB3_RW_DONE_EVENT(zero_done); DEFINE_SMB3_RW_DONE_EVENT(falloc_done); +/* For logging successful set EOF (truncate) */ +DECLARE_EVENT_CLASS(smb3_eof_class, + TP_PROTO(unsigned int xid, + __u64 fid, + __u32 tid, + __u64 sesid, + __u64 offset), + TP_ARGS(xid, fid, tid, sesid, offset), + TP_STRUCT__entry( + __field(unsigned int, xid) + __field(__u64, fid) + __field(__u32, tid) + __field(__u64, sesid) + __field(__u64, offset) + ), + TP_fast_assign( + __entry->xid = xid; + __entry->fid = fid; + __entry->tid = tid; + __entry->sesid = sesid; + __entry->offset = offset; + ), + TP_printk("xid=%u sid=0x%llx tid=0x%x fid=0x%llx offset=0x%llx", + __entry->xid, __entry->sesid, __entry->tid, __entry->fid, + __entry->offset) +) + +#define DEFINE_SMB3_EOF_EVENT(name) \ +DEFINE_EVENT(smb3_eof_class, smb3_##name, \ + TP_PROTO(unsigned int xid, \ + __u64 fid, \ + __u32 tid, \ + __u64 sesid, \ + __u64 offset), \ + TP_ARGS(xid, fid, tid, sesid, offset)) + +DEFINE_SMB3_EOF_EVENT(set_eof); + /* * For handle based calls other than read and write, and get/set info */ -- cgit v1.2.3-58-ga151 From 5d24968f5b7e00bae564b1646c3b9e0e3750aabe Mon Sep 17 00:00:00 2001 From: Shyam Prasad N Date: Tue, 14 Jun 2022 11:47:24 +0000 Subject: cifs: when a channel is not found for server, log its connection id cifs_ses_get_chan_index gets the index for a given server pointer. When a match is not found, we warn about a possible bug. However, printing details about the non-matching server could be more useful to debug here. Signed-off-by: Shyam Prasad N Signed-off-by: Steve French --- fs/cifs/sess.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs') diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 0bece97547d4..d417de354d9d 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -81,6 +81,9 @@ cifs_ses_get_chan_index(struct cifs_ses *ses, } /* If we didn't find the channel, it is likely a bug */ + if (server) + cifs_dbg(VFS, "unable to get chan index for server: 0x%llx", + server->conn_id); WARN_ON(1); return 0; } -- cgit v1.2.3-58-ga151