Hi,

I noticed a case in sr_ioctl.c's sr_get_mcn where a buffer is allocated, but 
the pointer isn't checked for null.

This patch against 2.6.12-rc2 adds a check.

Nate Dailey
Stratus Technologies


Signed-off-by: Nate Dailey <[EMAIL PROTECTED]>


--- linux-2.6.12-rc2/drivers/scsi/sr_ioctl.c.orig       2005-04-20 
11:31:27.000000000 -0400
+++ linux-2.6.12-rc2/drivers/scsi/sr_ioctl.c    2005-04-20 11:33:58.000000000 
-0400
@@ -281,6 +281,9 @@ int sr_get_mcn(struct cdrom_device_info 
        char *buffer = kmalloc(32, GFP_KERNEL | SR_GFP_DMA(cd));
        int result;
 
+       if (!buffer)
+               return -ENOMEM;
+
        memset(&cgc, 0, sizeof(struct packet_command));
        cgc.cmd[0] = GPCMD_READ_SUBCHANNEL;
        cgc.cmd[2] = 0x40;      /* I do want the subchannel info */


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