diff options
| author | Anirban Chakraborty <anirban.chakraborty@qlogic.com> | 2009-09-28 22:52:58 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2009-10-02 21:13:04 +0200 |
| commit | c7922a911c42c5a8bdee6cc75eb6bd66937d4217 (patch) | |
| tree | 5afe423e0e91624289b6a09af8268cc6896994d3 /drivers | |
| parent | [SCSI] st: fix possible memory use after free after MTSETBLK ioctl (diff) | |
| download | linux-c7922a911c42c5a8bdee6cc75eb6bd66937d4217.tar.xz linux-c7922a911c42c5a8bdee6cc75eb6bd66937d4217.zip | |
[SCSI] qla2xxx: Fix NULL ptr deref bug in fail path during queue create
Current code attempts to clean up resources when queue create fails and there it
invokes queue free call with a (NULL) pointer to the queue which could not be
allocated in the first place. Fix it by returning directly without invoking the
queue free call as no resources has been allocated at that point of time.
Reported-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mid.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c index 42b799abba57..e07b3617f019 100644 --- a/drivers/scsi/qla2xxx/qla_mid.c +++ b/drivers/scsi/qla2xxx/qla_mid.c @@ -568,7 +568,7 @@ qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, if (req == NULL) { qla_printk(KERN_WARNING, ha, "could not allocate memory" "for request que\n"); - goto que_failed; + goto failed; } req->length = REQUEST_ENTRY_CNT_24XX; @@ -632,6 +632,7 @@ qla25xx_create_req_que(struct qla_hw_data *ha, uint16_t options, que_failed: qla25xx_free_req_que(base_vha, req); +failed: return 0; } @@ -659,7 +660,7 @@ qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, if (rsp == NULL) { qla_printk(KERN_WARNING, ha, "could not allocate memory for" " response que\n"); - goto que_failed; + goto failed; } rsp->length = RESPONSE_ENTRY_CNT_MQ; @@ -728,6 +729,7 @@ qla25xx_create_rsp_que(struct qla_hw_data *ha, uint16_t options, que_failed: qla25xx_free_rsp_que(base_vha, rsp); +failed: return 0; } |