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Target/sbc: Initialize COMPARE_AND_WRITE write_sg scatterlist

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When compiled with CONFIG_DEBUG_SG set, uninitialized SGL leads
to BUG() in compare_and_write_callback().

Signed-off-by: Martin Svec <martin.svec@zoner.cz>
Cc: <stable@vger.kernel.org> #3.12+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Martin Svec 2014-04-01 16:03:02 +02:00 committed by Nicholas Bellinger
parent 9d2e59f2a7
commit a1e1774c6d
1 changed files with 2 additions and 1 deletions
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3
drivers/target/target_core_sbc.c
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@ -425,13 +425,14 @@ static sense_reason_t compare_and_write_callback(struct se_cmd *cmd)
goto out;
}
write_sg = kzalloc(sizeof(struct scatterlist) * cmd->t_data_nents,
write_sg = kmalloc(sizeof(struct scatterlist) * cmd->t_data_nents,
GFP_KERNEL);
if (!write_sg) {
pr_err("Unable to allocate compare_and_write sg\n");
ret = TCM_OUT_OF_RESOURCES;
goto out;
}
sg_init_table(write_sg, cmd->t_data_nents);
/*
* Setup verify and write data payloads from total NumberLBAs.
*/