From: Anton Blanchard <anton@samba.org>
To: jens.axboe@oracle.com
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] Initialise scatter/gather list in sg driver
Date: Thu, 25 Oct 2007 14:35:30 -0500 [thread overview]
Message-ID: <20071025193530.GB20459@kryten> (raw)
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>
---
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index b5fa4f0..f1871ea 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1652,6 +1652,7 @@ sg_build_sgat(Sg_scatter_hold * schp, const Sg_fd * sfp, int tablesize)
schp->buffer = kzalloc(sg_bufflen, gfp_flags);
if (!schp->buffer)
return -ENOMEM;
+ sg_init_table(schp->buffer, tablesize);
schp->sglist_len = sg_bufflen;
return tablesize; /* number of scat_gath elements allocated */
}
next reply other threads:[~2007-10-25 19:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-25 19:35 Anton Blanchard [this message]
2007-10-26 11:59 ` [PATCH] Initialise scatter/gather list in sg driver Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2007-10-25 19:29 Anton Blanchard
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