| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 23 Jan 2014 23:43:43 +0100
From: Nikolay Aleksandrov <nikolay@...hat.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, zoltan.kiss@...rix.com, andy@...yhouse.net,
vfalico@...hat.com, fubar@...ibm.com, nikolay@...hat.com
Subject: [PATCH net-next] bonding: fix u64 division
After the option conversion downdelay and updelay divide a u64
and on a 32 bit this causes the following errors:
ERROR: "__udivdi3" [drivers/net/bonding/bonding.ko] undefined!
ERROR: "__umoddi3" [drivers/net/bonding/bonding.ko] undefined!
Fix it by using a normal int instead because newval->value is capped
at INT_MAX by the way the option is defined.
Signed-off-by: Nikolay Aleksandrov <nikolay@...hat.com>
---
This is what I meant, but it's only compile-tested, I can't
test it until tomorrow.
drivers/net/bonding/bond_options.c | 24 ++++++++++++++----------
1 file changed, 14 insertions(+), 10 deletions(-)
diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c
index 4cee04a..11cb943 100644
--- a/drivers/net/bonding/bond_options.c
+++ b/drivers/net/bonding/bond_options.c
@@ -727,19 +727,21 @@ int bond_option_miimon_set(struct bonding *bond, struct bond_opt_value *newval)
int bond_option_updelay_set(struct bonding *bond, struct bond_opt_value *newval)
{
+ int value = newval->value;
+
if (!bond->params.miimon) {
pr_err("%s: Unable to set up delay as MII monitoring is disabled\n",
bond->dev->name);
return -EPERM;
}
- if ((newval->value % bond->params.miimon) != 0) {
- pr_warn("%s: Warning: up delay (%llu) is not a multiple of miimon (%d), updelay rounded to %llu ms\n",
- bond->dev->name, newval->value,
+ if ((value % bond->params.miimon) != 0) {
+ pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n",
+ bond->dev->name, value,
bond->params.miimon,
- (newval->value / bond->params.miimon) *
+ (value / bond->params.miimon) *
bond->params.miimon);
}
- bond->params.updelay = newval->value / bond->params.miimon;
+ bond->params.updelay = value / bond->params.miimon;
pr_info("%s: Setting up delay to %d.\n",
bond->dev->name,
bond->params.updelay * bond->params.miimon);
@@ -750,19 +752,21 @@ int bond_option_updelay_set(struct bonding *bond, struct bond_opt_value *newval)
int bond_option_downdelay_set(struct bonding *bond,
struct bond_opt_value *newval)
{
+ int value = newval->value;
+
if (!bond->params.miimon) {
pr_err("%s: Unable to set down delay as MII monitoring is disabled\n",
bond->dev->name);
return -EPERM;
}
- if ((newval->value % bond->params.miimon) != 0) {
- pr_warn("%s: Warning: down delay (%llu) is not a multiple of miimon (%d), delay rounded to %llu ms\n",
- bond->dev->name, newval->value,
+ if ((value % bond->params.miimon) != 0) {
+ pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n",
+ bond->dev->name, value,
bond->params.miimon,
- (newval->value / bond->params.miimon) *
+ (value / bond->params.miimon) *
bond->params.miimon);
}
- bond->params.downdelay = newval->value / bond->params.miimon;
+ bond->params.downdelay = value / bond->params.miimon;
pr_info("%s: Setting down delay to %d.\n",
bond->dev->name,
bond->params.downdelay * bond->params.miimon);
--
1.8.4.2
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists