Messages in this thread Patch in this message | | | From | Tong Zhang <> | Subject | [PATCH 2/2] scsi: myrb: fix null-ptr-dereference in myrb_probe | Date | Sun, 21 Mar 2021 20:29:35 -0400 |
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cb->host should be initialized and set before it is used by the following probe logic and the interrupt handler etc.
[ 5.073493] BUG: kernel NULL pointer dereference, address: 00000000000002cc [ 5.075907] RIP: 0010:kobject_put+0x25/0x120 [ 5.081572] Call Trace: [ 5.081720] myrb_probe.cold+0x22/0xabc [myrb] [ 5.083510] local_pci_probe+0x6f/0xb0
Fixes: 081ff398c56c ("scsi: myrb: Add Mylex RAID controller (block interface)") Signed-off-by: Tong Zhang <ztong0001@gmail.com> --- drivers/scsi/myrb.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/myrb.c b/drivers/scsi/myrb.c index ee33d97fb92c..7de49b869128 100644 --- a/drivers/scsi/myrb.c +++ b/drivers/scsi/myrb.c @@ -3512,6 +3512,7 @@ static struct myrb_hba *myrb_detect(struct pci_dev *pdev, shost->max_cmd_len = 12; shost->max_lun = 256; cb = shost_priv(shost); + cb->host = shost; mutex_init(&cb->dcmd_mutex); mutex_init(&cb->dma_mutex); cb->pdev = pdev; -- 2.25.1
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