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loopback: off by one in tcm_loop_make_naa_tpg()

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This is an off by one 'tgpt' check in tcm_loop_make_naa_tpg() that could result
in memory corruption.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Dan Carpenter 2011-04-02 14:32:47 -07:00 committed by Nicholas Bellinger
parent 21bca31c96
commit 12f09ccb46
1 changed files with 1 additions and 1 deletions
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2
drivers/target/loopback/tcm_loop.c
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@ -1205,7 +1205,7 @@ struct se_portal_group *tcm_loop_make_naa_tpg(
tpgt_str += 5; /* Skip ahead of "tpgt_" */ tpgt_str += 5; /* Skip ahead of "tpgt_" */
tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0); tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
if (tpgt > TL_TPGS_PER_HBA) { if (tpgt >= TL_TPGS_PER_HBA) {
printk(KERN_ERR "Passed tpgt: %hu exceeds TL_TPGS_PER_HBA:" printk(KERN_ERR "Passed tpgt: %hu exceeds TL_TPGS_PER_HBA:"
" %u\n", tpgt, TL_TPGS_PER_HBA); " %u\n", tpgt, TL_TPGS_PER_HBA);
return ERR_PTR(-EINVAL); return ERR_PTR(-EINVAL);