Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 3.18 09/11] scsi: sg: Re-fix off by one in sg_fill_request_table() | Date | Tue, 31 Oct 2017 10:54:46 +0100 |
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3.18-stable review patch. If anyone has any objections, please let me know.
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From: Ben Hutchings <ben.hutchings@codethink.co.uk>
commit 587c3c9f286cee5c9cac38d28c8ae1875f4ec85b upstream.
Commit 109bade9c625 ("scsi: sg: use standard lists for sg_requests") introduced an off-by-one error in sg_ioctl(), which was fixed by commit bd46fc406b30 ("scsi: sg: off by one in sg_ioctl()").
Unfortunately commit 4759df905a47 ("scsi: sg: factor out sg_fill_request_table()") moved that code, and reintroduced the bug (perhaps due to a botched rebase). Fix it again.
Fixes: 4759df905a47 ("scsi: sg: factor out sg_fill_request_table()") Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/scsi/sg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -863,7 +863,7 @@ sg_fill_request_table(Sg_fd *sfp, sg_req val = 0; list_for_each_entry(srp, &sfp->rq_list, entry) { - if (val > SG_MAX_QUEUE) + if (val >= SG_MAX_QUEUE) break; rinfo[val].req_state = srp->done + 1; rinfo[val].problem =
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