This is a note to let you know that I've just added the patch titled
cifs: append path to open_enter trace event
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cifs-append-path-to-open_enter-trace-event.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fddc6ccc487e5de07b98df8d04118d5dcb5e0407 Mon Sep 17 00:00:00 2001
From: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Date: Fri, 17 Mar 2023 12:51:17 +0000
Subject: cifs: append path to open_enter trace event
From: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
commit fddc6ccc487e5de07b98df8d04118d5dcb5e0407 upstream.
We do not dump the file path for smb3_open_enter ftrace
calls, which is a severe handicap while debugging
using ftrace evens. This change adds that info.
Unfortunately, we're not updating the path in open params
in many places; which I had to do as a part of this change.
SMB2_open gets path in utf16 format, but it's easier of
path is supplied as char pointer in oparms.
Signed-off-by: Shyam Prasad N <sprasad@xxxxxxxxxxxxx>
Reviewed-by: Paulo Alcantara (SUSE) <pc@xxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/cifs/cached_dir.c | 1 +
fs/cifs/link.c | 2 ++
fs/cifs/smb2inode.c | 1 +
fs/cifs/smb2ops.c | 11 +++++++++++
fs/cifs/smb2pdu.c | 4 ++--
fs/cifs/trace.h | 12 ++++++++----
6 files changed, 25 insertions(+), 6 deletions(-)
--- a/fs/cifs/cached_dir.c
+++ b/fs/cifs/cached_dir.c
@@ -184,6 +184,7 @@ int open_cached_dir(unsigned int xid, st
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = path,
.create_options = cifs_create_options(cifs_sb, CREATE_NOT_FILE),
.desired_access = FILE_READ_ATTRIBUTES,
.disposition = FILE_OPEN,
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -360,6 +360,7 @@ smb3_query_mf_symlink(unsigned int xid,
oparms = (struct cifs_open_parms) {
.tcon = tcon,
.cifs_sb = cifs_sb,
+ .path = path,
.desired_access = GENERIC_READ,
.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),
.disposition = FILE_OPEN,
@@ -427,6 +428,7 @@ smb3_create_mf_symlink(unsigned int xid,
oparms = (struct cifs_open_parms) {
.tcon = tcon,
.cifs_sb = cifs_sb,
+ .path = path,
.desired_access = GENERIC_WRITE,
.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR),
.disposition = FILE_CREATE,
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -107,6 +107,7 @@ static int smb2_compound_op(const unsign
vars->oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = full_path,
.desired_access = desired_access,
.disposition = create_disposition,
.create_options = cifs_create_options(cifs_sb, create_options),
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -731,6 +731,7 @@ smb3_qfs_tcon(const unsigned int xid, st
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = "",
.desired_access = FILE_READ_ATTRIBUTES,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -774,6 +775,7 @@ smb2_qfs_tcon(const unsigned int xid, st
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = "",
.desired_access = FILE_READ_ATTRIBUTES,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -821,6 +823,7 @@ smb2_is_path_accessible(const unsigned i
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = full_path,
.desired_access = FILE_READ_ATTRIBUTES,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -1105,6 +1108,7 @@ smb2_set_ea(const unsigned int xid, stru
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = path,
.desired_access = FILE_WRITE_EA,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -2096,6 +2100,7 @@ smb3_notify(const unsigned int xid, stru
tcon = cifs_sb_master_tcon(cifs_sb);
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = path,
.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -2168,6 +2173,7 @@ smb2_query_dir_first(const unsigned int
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = path,
.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -2500,6 +2506,7 @@ smb2_query_info_compound(const unsigned
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = path,
.desired_access = desired_access,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -2634,6 +2641,7 @@ smb311_queryfs(const unsigned int xid, s
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = "",
.desired_access = FILE_READ_ATTRIBUTES,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, 0),
@@ -2928,6 +2936,7 @@ smb2_query_symlink(const unsigned int xi
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = full_path,
.desired_access = FILE_READ_ATTRIBUTES,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, create_options),
@@ -3068,6 +3077,7 @@ smb2_query_reparse_tag(const unsigned in
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = full_path,
.desired_access = FILE_READ_ATTRIBUTES,
.disposition = FILE_OPEN,
.create_options = cifs_create_options(cifs_sb, OPEN_REPARSE_POINT),
@@ -3208,6 +3218,7 @@ get_smb2_acl_by_path(struct cifs_sb_info
oparms = (struct cifs_open_parms) {
.tcon = tcon,
+ .path = path,
.desired_access = READ_CONTROL,
.disposition = FILE_OPEN,
/*
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2742,7 +2742,7 @@ int smb311_posix_mkdir(const unsigned in
rqst.rq_nvec = n_iov;
/* no need to inc num_remote_opens because we close it just below */
- trace_smb3_posix_mkdir_enter(xid, tcon->tid, ses->Suid, CREATE_NOT_FILE,
+ trace_smb3_posix_mkdir_enter(xid, tcon->tid, ses->Suid, full_path, CREATE_NOT_FILE,
FILE_WRITE_ATTRIBUTES);
/* resource #4: response buffer */
rc = cifs_send_recv(xid, ses, server,
@@ -3010,7 +3010,7 @@ SMB2_open(const unsigned int xid, struct
if (rc)
goto creat_exit;
- trace_smb3_open_enter(xid, tcon->tid, tcon->ses->Suid,
+ trace_smb3_open_enter(xid, tcon->tid, tcon->ses->Suid, oparms->path,
oparms->create_options, oparms->desired_access);
rc = cifs_send_recv(xid, ses, server,
--- a/fs/cifs/trace.h
+++ b/fs/cifs/trace.h
@@ -701,13 +701,15 @@ DECLARE_EVENT_CLASS(smb3_open_enter_clas
TP_PROTO(unsigned int xid,
__u32 tid,
__u64 sesid,
+ const char *full_path,
int create_options,
int desired_access),
- TP_ARGS(xid, tid, sesid, create_options, desired_access),
+ TP_ARGS(xid, tid, sesid, full_path, create_options, desired_access),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u32, tid)
__field(__u64, sesid)
+ __string(path, full_path)
__field(int, create_options)
__field(int, desired_access)
),
@@ -715,11 +717,12 @@ DECLARE_EVENT_CLASS(smb3_open_enter_clas
__entry->xid = xid;
__entry->tid = tid;
__entry->sesid = sesid;
+ __assign_str(path, full_path);
__entry->create_options = create_options;
__entry->desired_access = desired_access;
),
- TP_printk("xid=%u sid=0x%llx tid=0x%x cr_opts=0x%x des_access=0x%x",
- __entry->xid, __entry->sesid, __entry->tid,
+ TP_printk("xid=%u sid=0x%llx tid=0x%x path=%s cr_opts=0x%x des_access=0x%x",
+ __entry->xid, __entry->sesid, __entry->tid, __get_str(path),
__entry->create_options, __entry->desired_access)
)
@@ -728,9 +731,10 @@ DEFINE_EVENT(smb3_open_enter_class, smb3
TP_PROTO(unsigned int xid, \
__u32 tid, \
__u64 sesid, \
+ const char *full_path, \
int create_options, \
int desired_access), \
- TP_ARGS(xid, tid, sesid, create_options, desired_access))
+ TP_ARGS(xid, tid, sesid, full_path, create_options, desired_access))
DEFINE_SMB3_OPEN_ENTER_EVENT(open_enter);
DEFINE_SMB3_OPEN_ENTER_EVENT(posix_mkdir_enter);
Patches currently in stable-queue which might be from sprasad@xxxxxxxxxxxxx are
queue-6.2/cifs-lock-chan_lock-outside-match_session.patch
queue-6.2/smb3-lower-default-deferred-close-timeout-to-address-perf-regression.patch
queue-6.2/cifs-do-not-poll-server-interfaces-too-regularly.patch
queue-6.2/cifs-dump-pending-mids-for-all-channels-in-debugdata.patch
queue-6.2/smb3-fix-unusable-share-after-force-unmount-failure.patch
queue-6.2/cifs-empty-interface-list-when-server-doesn-t-support-query-interfaces.patch
queue-6.2/cifs-print-session-id-while-listing-open-files.patch
queue-6.2/cifs-append-path-to-open_enter-trace-event.patch
