diff options
| author | James Smart <james.smart@emulex.com> | 2013-06-01 01:05:17 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-06-26 21:48:52 +0400 |
| commit | 3be30e0e4486b3568044efe27caf405296d7845a (patch) | |
| tree | 46412fa4e5ae0afc33c1a027a4269d0e7611cf07 /drivers/scsi/lpfc/lpfc_scsi.c | |
| parent | df0d085fdd2e7c39d1249c2d4ad6b3e176efb60c (diff) | |
| download | linux-3be30e0e4486b3568044efe27caf405296d7845a.tar.xz | |
[SCSI] lpfc 8.3.40: Fixed system panic due to unsafe walking and deleting linked list
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_scsi.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 853223947d7a..5fd35281f405 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -1166,13 +1166,14 @@ lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) static struct lpfc_scsi_buf* lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) { - struct lpfc_scsi_buf *lpfc_cmd ; + struct lpfc_scsi_buf *lpfc_cmd, *lpfc_cmd_next; unsigned long gflag = 0; unsigned long pflag = 0; int found = 0; spin_lock_irqsave(&phba->scsi_buf_list_get_lock, gflag); - list_for_each_entry(lpfc_cmd, &phba->lpfc_scsi_buf_list_get, list) { + list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next, + &phba->lpfc_scsi_buf_list_get, list) { if (lpfc_test_rrq_active(phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag)) continue; @@ -1186,8 +1187,8 @@ lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) &phba->lpfc_scsi_buf_list_get); INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, pflag); - list_for_each_entry(lpfc_cmd, &phba->lpfc_scsi_buf_list_get, - list) { + list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next, + &phba->lpfc_scsi_buf_list_get, list) { if (lpfc_test_rrq_active( phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag)) continue; |