From: Dan Carpenter <dan.carpenter@oracle.com>
To: Matthew Wilcox <matthew@wil.cx>
Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
linux-scsi@vger.kernel.org, kernel-janitors@vger.kernel.org,
Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH] [SCSI] sym53c8xx_2: iterator underflow in sym_getsync()
Date: Thu, 25 Jan 2018 14:13:40 +0000 [thread overview]
Message-ID: <20180125141340.GA7299@mwanda> (raw)
We wanted to exit the loop with "div" set to zero, but instead, if we
don't hit the break then "div" is -1 when we finish the loop. It leads
to an array underflow a few lines later.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c
index ca360daa6a25..378af306fda1 100644
--- a/drivers/scsi/sym53c8xx_2/sym_hipd.c
+++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c
@@ -536,7 +536,7 @@ sym_getsync(struct sym_hcb *np, u_char dt, u_char sfac, u_char *divp, u_char *fa
* Look for the greatest clock divisor that allows an
* input speed faster than the period.
*/
- while (div-- > 0)
+ while (--div > 0)
if (kpc >= (div_10M[div] << 2)) break;
/*
next reply other threads:[~2018-01-25 14:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-25 14:13 Dan Carpenter [this message]
2018-01-29 14:51 ` [PATCH] [SCSI] sym53c8xx_2: iterator underflow in sym_getsync() Johannes Thumshirn
2018-01-31 2:29 ` Martin K. Petersen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180125141340.GA7299@mwanda \
--to=dan.carpenter@oracle.com \
--cc=arnd@arndb.de \
--cc=jejb@linux.vnet.ibm.com \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
--cc=matthew@wil.cx \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox