From: Matthew Dobson <colpatch@us.ibm.com>
Date: Tue, 22 Nov 2005 05:32:29 +0000 (-0800)
Subject: [PATCH] Fix a bug in scsi_get_command
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=79e448bf2d71d52d28c99be4faff9cc51928f90b;p=linux-beck.git

[PATCH] Fix a bug in scsi_get_command

scsi_get_command() attempts to write into a structure that may not have
been successfully allocated.  Move this write inside the if statement that
ensures we won't panic the kernel with a NULL pointer dereference.

Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 0be60bba58d3..180676d7115a 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -265,10 +265,10 @@ struct scsi_cmnd *scsi_get_command(struct scsi_device *dev, gfp_t gfp_mask)
 		spin_lock_irqsave(&dev->list_lock, flags);
 		list_add_tail(&cmd->list, &dev->cmd_list);
 		spin_unlock_irqrestore(&dev->list_lock, flags);
+		cmd->jiffies_at_alloc = jiffies;
 	} else
 		put_device(&dev->sdev_gendev);
 
-	cmd->jiffies_at_alloc = jiffies;
 	return cmd;
 }				
 EXPORT_SYMBOL(scsi_get_command);