6.5-stable review patch. If anyone has any objections, please let me know.
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From: Nilesh Javali njavali@marvell.com
commit 59f10a05b5c7b675256a66e3161741239889ff80 upstream.
The following call trace was observed:
localhost kernel: nvme nvme0: NVME-FC{0}: controller connect complete localhost kernel: BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u129:4/75092 localhost kernel: nvme nvme0: NVME-FC{0}: new ctrl: NQN "nqn.1992-08.com.netapp:sn.b42d198afb4d11ecad6d00a098d6abfa:subsystem.PR_Channel2022_RH84_subsystem_291" localhost kernel: caller is qla_nvme_post_cmd+0x216/0x1380 [qla2xxx] localhost kernel: CPU: 6 PID: 75092 Comm: kworker/u129:4 Kdump: loaded Tainted: G B W OE --------- --- 5.14.0-70.22.1.el9_0.x86_64+debug #1 localhost kernel: Hardware name: HPE ProLiant XL420 Gen10/ProLiant XL420 Gen10, BIOS U39 01/13/2022 localhost kernel: Workqueue: nvme-wq nvme_async_event_work [nvme_core] localhost kernel: Call Trace: localhost kernel: dump_stack_lvl+0x57/0x7d localhost kernel: check_preemption_disabled+0xc8/0xd0 localhost kernel: qla_nvme_post_cmd+0x216/0x1380 [qla2xxx]
Use raw_smp_processor_id() instead of smp_processor_id().
Also use queue_work() across the driver instead of queue_work_on() thus avoiding usage of smp_processor_id() when CONFIG_DEBUG_PREEMPT is enabled.
Cc: stable@vger.kernel.org Suggested-by: John Garry john.g.garry@oracle.com Signed-off-by: Nilesh Javali njavali@marvell.com Link: https://lore.kernel.org/r/20230831112146.32595-2-njavali@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/qla2xxx/qla_inline.h | 2 +- drivers/scsi/qla2xxx/qla_isr.c | 6 +++--- drivers/scsi/qla2xxx/qla_target.c | 3 +-- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 4 ++-- 4 files changed, 7 insertions(+), 8 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_inline.h +++ b/drivers/scsi/qla2xxx/qla_inline.h @@ -577,7 +577,7 @@ fcport_is_bigger(fc_port_t *fcport) static inline struct qla_qpair * qla_mapq_nvme_select_qpair(struct qla_hw_data *ha, struct qla_qpair *qpair) { - int cpuid = smp_processor_id(); + int cpuid = raw_smp_processor_id();
if (qpair->cpuid != cpuid && ha->qp_cpu_map[cpuid]) { --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3817,7 +3817,7 @@ void qla24xx_process_response_queue(stru if (!ha->flags.fw_started) return;
- if (rsp->qpair->cpuid != smp_processor_id() || !rsp->qpair->rcv_intr) { + if (rsp->qpair->cpuid != raw_smp_processor_id() || !rsp->qpair->rcv_intr) { rsp->qpair->rcv_intr = 1;
if (!rsp->qpair->cpu_mapped) @@ -4308,7 +4308,7 @@ qla2xxx_msix_rsp_q(int irq, void *dev_id } ha = qpair->hw;
- queue_work_on(smp_processor_id(), ha->wq, &qpair->q_work); + queue_work(ha->wq, &qpair->q_work);
return IRQ_HANDLED; } @@ -4334,7 +4334,7 @@ qla2xxx_msix_rsp_q_hs(int irq, void *dev wrt_reg_dword(®->hccr, HCCRX_CLR_RISC_INT); spin_unlock_irqrestore(&ha->hardware_lock, flags);
- queue_work_on(smp_processor_id(), ha->wq, &qpair->q_work); + queue_work(ha->wq, &qpair->q_work);
return IRQ_HANDLED; } --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -4425,8 +4425,7 @@ static int qlt_handle_cmd_for_atio(struc queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); } else if (ha->msix_count) { if (cmd->atio.u.isp24.fcp_cmnd.rddata) - queue_work_on(smp_processor_id(), qla_tgt_wq, - &cmd->work); + queue_work(qla_tgt_wq, &cmd->work); else queue_work_on(cmd->se_cmd.cpuid, qla_tgt_wq, &cmd->work); --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -310,7 +310,7 @@ static void tcm_qla2xxx_free_cmd(struct cmd->trc_flags |= TRC_CMD_DONE;
INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); - queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); + queue_work(tcm_qla2xxx_free_wq, &cmd->work); }
/* @@ -547,7 +547,7 @@ static void tcm_qla2xxx_handle_data(stru cmd->trc_flags |= TRC_DATA_IN; cmd->cmd_in_wq = 1; INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); - queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); + queue_work(tcm_qla2xxx_free_wq, &cmd->work); }
static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)