Messages in this thread Patch in this message | | | From | John Meneghini <> | Subject | [PATCH] scsi: qedf: make qedf_execute_tmf non-preemptible | Date | Wed, 3 Apr 2024 11:01:55 -0400 |
| |
Stop calling smp_processor_id from preemptible code in qedf_execute_tmf. This results in BUGON when running an RT kernel.
[ 659.343280] BUG: using smp_processor_id() in preemptible [00000000] code: sg_reset/3646 [ 659.343282] caller is qedf_execute_tmf+0x8b/0x360 [qedf]
Tested-by: Guangwu Zhang <guazhang@redhat.com> Cc: Saurav Kashyap <skashyap@marvell.com> Cc: Nilesh Javali <njavali@marvell.com> Signed-off-by: John Meneghini <jmeneghi@redhat.com> --- drivers/scsi/qedf/qedf_io.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/qedf/qedf_io.c b/drivers/scsi/qedf/qedf_io.c index bf921caaf6ae..054a51713d55 100644 --- a/drivers/scsi/qedf/qedf_io.c +++ b/drivers/scsi/qedf/qedf_io.c @@ -2324,9 +2324,6 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, u64 tm_lun, io_req->fcport = fcport; io_req->cmd_type = QEDF_TASK_MGMT_CMD; - /* Record which cpu this request is associated with */ - io_req->cpu = smp_processor_id(); - /* Set TM flags */ io_req->io_req_flags = QEDF_READ; io_req->data_xfer_len = 0; @@ -2349,6 +2346,9 @@ static int qedf_execute_tmf(struct qedf_rport *fcport, u64 tm_lun, spin_lock_irqsave(&fcport->rport_lock, flags); + /* Record which cpu this request is associated with */ + io_req->cpu = smp_processor_id(); + sqe_idx = qedf_get_sqe_idx(fcport); sqe = &fcport->sq[sqe_idx]; memset(sqe, 0, sizeof(struct fcoe_wqe)); -- 2.39.3
| |