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scsi: target: fix PR IN / READ FULL STATUS for FC

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[ Upstream commit 8fed04eb79a74cbf471dfaa755900a51b37273ab ]

Creation of the response to READ FULL STATUS fails for FC based
reservations. Reason is the too high loop limit (< 24) in
fc_get_pr_transport_id(). The string representation of FC WWPN is 23 chars
long only ("11:22:33:44:55:66:77:88"). So when i is 23, the loop body is
executed a last time for the ending '\0' of the string and thus hex2bin()
reports an error.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bodo Stroesser <[email protected]>
Reviewed-by: Mike Christie <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
This commit is contained in:
Bodo Stroesser 2020-04-08 15:26:10 +02:00 • committed by Greg Kroah-Hartman
commit 62d350eb31
1 changed files with 1 additions and 1 deletions
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2
drivers/target/target_core_fabric_lib.c
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@ -63,7 +63,7 @@ static int fc_get_pr_transport_id(
* encoded TransportID.
*/
ptr = &se_nacl->initiatorname[0];
for (i = 0; i < 24; ) {
for (i = 0; i < 23; ) {
if (!strncmp(&ptr[i], ":", 1)) {
i++;
continue;