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Initialise scatter/gather list in sg driver

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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>
This commit is contained in:
Anton Blanchard 2007-10-26 14:00:14 +02:00 committed by Jens Axboe
parent acd054a5ef
commit 30fa0d0f0c
1 changed files with 1 additions and 0 deletions
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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 */
} }