This is a note to let you know that I've just added the patch titled
smb3: add dynamic trace point for ioctls
to the 6.6-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:
smb3-add-dynamic-trace-point-for-ioctls.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1c432cabb811faa93a7ee744ddd6fa401e59cd89
Author: Steve French <stfrench@xxxxxxxxxxxxx>
Date: Wed Mar 6 01:03:59 2024 -0600
smb3: add dynamic trace point for ioctls
[ Upstream commit 073dd87c8e1ee55ca163956f0c71249dc28aac51 ]
It can be helpful in debugging to know which ioctls are called to better
correlate them with smb3 fsctls (and opens). Add a dynamic trace point
to trace ioctls into cifs.ko
Here is sample output:
TASK-PID CPU# ||||| TIMESTAMP FUNCTION
| | | ||||| | |
new-inotify-ioc-90418 [001] ..... 142157.397024: smb3_ioctl: xid=18 fid=0x0 ioctl cmd=0xc009cf0b
new-inotify-ioc-90457 [007] ..... 142217.943569: smb3_ioctl: xid=22 fid=0x389bf5b6 ioctl cmd=0xc009cf0b
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/smb/client/ioctl.c b/fs/smb/client/ioctl.c
index 682eabdd1d6cc..855ac5a62edfa 100644
--- a/fs/smb/client/ioctl.c
+++ b/fs/smb/client/ioctl.c
@@ -349,6 +349,11 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg)
xid = get_xid();
cifs_dbg(FYI, "cifs ioctl 0x%x\n", command);
+ if (pSMBFile == NULL)
+ trace_smb3_ioctl(xid, 0, command);
+ else
+ trace_smb3_ioctl(xid, pSMBFile->fid.persistent_fid, command);
+
switch (command) {
case FS_IOC_GETFLAGS:
if (pSMBFile == NULL)
diff --git a/fs/smb/client/trace.h b/fs/smb/client/trace.h
index ce90ae0d77f84..f9c1fd32d0b8c 100644
--- a/fs/smb/client/trace.h
+++ b/fs/smb/client/trace.h
@@ -1032,6 +1032,38 @@ DEFINE_EVENT(smb3_ses_class, smb3_##name, \
DEFINE_SMB3_SES_EVENT(ses_not_found);
+DECLARE_EVENT_CLASS(smb3_ioctl_class,
+ TP_PROTO(unsigned int xid,
+ __u64 fid,
+ unsigned int command),
+ TP_ARGS(xid, fid, command),
+ TP_STRUCT__entry(
+ __field(unsigned int, xid)
+ __field(__u64, fid)
+ __field(unsigned int, command)
+ ),
+ TP_fast_assign(
+ __entry->xid = xid;
+ __entry->fid = fid;
+ __entry->command = command;
+ ),
+ TP_printk("xid=%u fid=0x%llx ioctl cmd=0x%x",
+ __entry->xid, __entry->fid, __entry->command)
+)
+
+#define DEFINE_SMB3_IOCTL_EVENT(name) \
+DEFINE_EVENT(smb3_ioctl_class, smb3_##name, \
+ TP_PROTO(unsigned int xid, \
+ __u64 fid, \
+ unsigned int command), \
+ TP_ARGS(xid, fid, command))
+
+DEFINE_SMB3_IOCTL_EVENT(ioctl);
+
+
+
+
+
DECLARE_EVENT_CLASS(smb3_credit_class,
TP_PROTO(__u64 currmid,
__u64 conn_id,
