Hi Bean, Thank you for fixing this. > From: Bean Huo <beanhuo@xxxxxxxxxx> > > In the case of UPIU/DME request execution failed in UFS device, > ufs_bsg_request() will complete this failed bsg job by calling > bsg_job_done(). Meanwhile, it returns this error status to blk-mq > layer, then trigger blk-mq complete this request again, this will > cause below panic. > > [ 68.673050] Call trace: > [ 68.675491] __ll_sc___cmpxchg_case_acq_32+0x4/0x20 > [ 68.680369] complete+0x28/0x70 > [ 68.683510] blk_end_sync_rq+0x24/0x30 > [ 68.687255] blk_mq_end_request+0xb8/0x118 > [ 68.691350] bsg_job_put+0x4c/0x58 > [ 68.694747] bsg_complete+0x20/0x30 > [ 68.698231] blk_done_softirq+0xb4/0xe8 > [ 68.702066] __do_softirq+0x154/0x3f0 > [ 68.705726] run_ksoftirqd+0x4c/0x68 > [ 68.709298] smpboot_thread_fn+0x22c/0x268 > [ 68.713394] kthread+0x130/0x138 > [ 68.716619] ret_from_fork+0x10/0x1c > [ 68.720193] Code: f84107fe d65f03c0 d503201f f9800011 (885ffc10) > [ 68.726298] ---[ end trace d92825bff6326e66 ]--- > [ 68.730913] Kernel panic - not syncing: Fatal exception in interrupt Please add a 'fixes:' tag > This patch is to fix this issue. The solution is we complete > the ufs-bsg job only if no error happened. > > Signed-off-by: Bean Huo <beanhuo@xxxxxxxxxx> > --- > drivers/scsi/ufs/ufs_bsg.c | 7 ++++--- > drivers/scsi/ufs/ufshcd.c | 2 +- > 2 files changed, 5 insertions(+), 4 deletions(-) > > diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/scsi/ufs/ufs_bsg.c > index 869e71f..d5516dc 100644 > --- a/drivers/scsi/ufs/ufs_bsg.c > +++ b/drivers/scsi/ufs/ufs_bsg.c > @@ -122,7 +122,7 @@ static int ufs_bsg_request(struct bsg_job *job) > memcpy(&uc, &bsg_request->upiu_req.uc, UIC_CMD_SIZE); > ret = ufshcd_send_uic_cmd(hba, &uc); > if (ret) > - dev_dbg(hba->dev, > + dev_err(hba->dev, > "send uic cmd: error code %d\n", ret); Please send a different patch fixing typos (also in ufshcd_uic_change_pwr_mode) > > memcpy(&bsg_reply->upiu_rsp.uc, &uc, UIC_CMD_SIZE); > @@ -143,13 +143,14 @@ static int ufs_bsg_request(struct bsg_job *job) > sg_copy_from_buffer(job->request_payload.sg_list, > job->request_payload.sg_cnt, > desc_buff, desc_len); > - Keep this one line space please > kfree(desc_buff); > > out: > bsg_reply->result = ret; > job->reply_len = sizeof(struct ufs_bsg_reply); > - bsg_job_done(job, ret, bsg_reply->reply_payload_rcv_len); > + /* complete the job here only if no error */ > + if (ret == 0) > + bsg_job_done(job, ret, bsg_reply->reply_payload_rcv_len); > > return ret; > } > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > index 04d3686..4718041 100644 > --- a/drivers/scsi/ufs/ufshcd.c > +++ b/drivers/scsi/ufs/ufshcd.c > @@ -3776,7 +3776,7 @@ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, > struct uic_command *cmd) > } > > /** > - * ufshcd_uic_change_pwr_mode - Perform the UIC power mode chage > + * ufshcd_uic_change_pwr_mode - Perform the UIC power mode change Please send a different patch fixing typos Thanks, Avri > * using DME_SET primitives. > * @hba: per adapter instance > * @mode: powr mode value > -- > 2.7.4
