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
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Thu, 13 Aug 2020 14:39:10 +0000 (UTC)
From:   Christophe Leroy <>
To:     Solarflare linux maintainers <>,
        Edward Cree <>,
        Martin Habets <>,
        "David S. Miller" <>,
        Jakub Kicinski <>
Subject: [PATCH] sfc_ef100: Fix build failure on powerpc

ppc6xx_defconfig fails building sfc.ko module, complaining
about the lack of _umoddi3 symbol.

This is due to the following test

 		if (EFX_MIN_DMAQ_SIZE % reader->value) {

Because reader->value is u64.

As EFX_MIN_DMAQ_SIZE value is 512, reader->value is obviously small
enough for an u32 calculation, so cast it as (u32) for the test, to
avoid the need for _umoddi3.

Fixes: adcfc3482fff ("sfc_ef100: read Design Parameters at probe time")
Signed-off-by: Christophe Leroy <>
 drivers/net/ethernet/sfc/ef100_nic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c
index 36598d0542ed..234400b69b07 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -979,7 +979,7 @@ static int ef100_process_design_param(struct efx_nic *efx,
 		 * EFX_MIN_DMAQ_SIZE is divisible by GRANULARITY.
 		 * This is very unlikely to fail.
-		if (EFX_MIN_DMAQ_SIZE % reader->value) {
+		if (EFX_MIN_DMAQ_SIZE % (u32)reader->value) {
 			netif_err(efx, probe, efx->net_dev,
 				  "%s size granularity is %llu, can't guarantee safety\n",
 				  reader->type == ESE_EF100_DP_GZ_RXQ_SIZE_GRANULARITY ? "RXQ" : "TXQ",

Powered by blists - more mailing lists