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Initialise scatter/gather list in sg driver

After turning on DEBUG_SG I hit a fail:

kernel BUG at include/linux/scatterlist.h:50!

	sg_build_indirect
	sg_build_reserve
	sg_open
	chrdev_open
	__dentry_open
	do_filp_open
	do_sys_open

We should initialise the sg list when we allocate it in sg_build_sgat.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Anton Blanchard 18 years ago
parent
acd054a5ef
commit
30fa0d0f0c
1 changed files with 1 additions and 0 deletions
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  1. 1 0
      drivers/scsi/sg.c

+ 1 - 0
drivers/scsi/sg.c
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@@ -1652,6 +1652,7 @@ sg_build_sgat(Sg_scatter_hold * schp, const Sg_fd * sfp, int tablesize)
 
 	schp->buffer = kzalloc(sg_bufflen, gfp_flags);
 
 	schp->buffer = kzalloc(sg_bufflen, gfp_flags);
 
 	if (!schp->buffer)
 
 	if (!schp->buffer)
 
 		return -ENOMEM;
 
 		return -ENOMEM;
 
+	sg_init_table(schp->buffer, tablesize);
 
 	schp->sglist_len = sg_bufflen;
 
 	schp->sglist_len = sg_bufflen;
 
 	return tablesize;	/* number of scat_gath elements allocated */
 
 	return tablesize;	/* number of scat_gath elements allocated */
 
 }
 
 }