diff options
author | James Smart <jsmart2021@gmail.com> | 2019-08-27 14:28:05 -0700 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-08-29 18:08:58 -0400 |
commit | 9db6c14c36fc8f7824ade95f53bcdad43df678b4 (patch) | |
tree | 8d724084fb8bd3e34148ff79f882893253767fa0 /drivers/scsi/lpfc/lpfc_scsi.c | |
parent | 7f9989bace91a7a36051d64cbf46f7760c52bbf0 (diff) |
scsi: lpfc: Remove bg debugfs buffers
Capturing and downloading dif command data and dif data was done a dozen
years ago and no longer being used. Also creates a potential security hole.
Remove the debugfs buffer for dif debugging.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
CC: KyleMahlkuch <kmahlkuc@linux.vnet.ibm.com>
CC: Hannes Reinecke <hare@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_scsi.c')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 7c65bd652c4d..fe1097666de4 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -53,8 +53,6 @@ #define LPFC_RESET_WAIT 2 #define LPFC_ABORT_WAIT 2 -int _dump_buf_done = 1; - static char *dif_op_str[] = { "PROT_NORMAL", "PROT_READ_INSERT", @@ -89,63 +87,6 @@ lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_io_buf *psb); static int lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc); -static void -lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) -{ - void *src, *dst; - struct scatterlist *sgde = scsi_sglist(cmnd); - - if (!_dump_buf_data) { - lpfc_printf_log(phba, KERN_ERR, LOG_BG, - "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", - __func__); - return; - } - - - if (!sgde) { - lpfc_printf_log(phba, KERN_ERR, LOG_BG, - "9051 BLKGRD: ERROR: data scatterlist is null\n"); - return; - } - - dst = (void *) _dump_buf_data; - while (sgde) { - src = sg_virt(sgde); - memcpy(dst, src, sgde->length); - dst += sgde->length; - sgde = sg_next(sgde); - } -} - -static void -lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) -{ - void *src, *dst; - struct scatterlist *sgde = scsi_prot_sglist(cmnd); - - if (!_dump_buf_dif) { - lpfc_printf_log(phba, KERN_ERR, LOG_BG, - "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", - __func__); - return; - } - - if (!sgde) { - lpfc_printf_log(phba, KERN_ERR, LOG_BG, - "9053 BLKGRD: ERROR: prot scatterlist is null\n"); - return; - } - - dst = _dump_buf_dif; - while (sgde) { - src = sg_virt(sgde); - memcpy(dst, src, sgde->length); - dst += sgde->length; - sgde = sg_next(sgde); - } -} - static inline unsigned lpfc_cmd_blksize(struct scsi_cmnd *sc) { @@ -2962,26 +2903,6 @@ lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_cmd, uint32_t bgstat = bgf->bgstat; uint64_t failing_sector = 0; - spin_lock(&_dump_buf_lock); - if (!_dump_buf_done) { - lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" - " Data for %u blocks to debugfs\n", - (cmd->cmnd[7] << 8 | cmd->cmnd[8])); - lpfc_debug_save_data(phba, cmd); - - /* If we have a prot sgl, save the DIF buffer */ - if (lpfc_prot_group_type(phba, cmd) == - LPFC_PG_TYPE_DIF_BUF) { - lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " - "Saving DIF for %u blocks to debugfs\n", - (cmd->cmnd[7] << 8 | cmd->cmnd[8])); - lpfc_debug_save_dif(phba, cmd); - } - - _dump_buf_done = 1; - } - spin_unlock(&_dump_buf_lock); - if (lpfc_bgs_get_invalid_prof(bgstat)) { cmd->result = DID_ERROR << 16; lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |