From: Anton Blanchard Date: Tue, 24 Jul 2012 15:05:25 +0000 (+0000) Subject: be2net: Missing byteswap in be_get_fw_log_level causes oops on PowerPC X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ac46a4623815113a0305b2a491c125f473a88c53;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git be2net: Missing byteswap in be_get_fw_log_level causes oops on PowerPC We are seeing an oops in be_get_fw_log_level on ppc64 where we walk off the end of memory. commit 941a77d582c8 (be2net: Fix to allow get/set of debug levels in the firmware.) requires byteswapping of num_modes and num_modules. Cc: stable@vger.kernel.org # 3.5+ Signed-off-by: Anton Blanchard Acked-by: Sathya Perla Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c index e34be1c7ae8a..c0e700653f96 100644 --- a/drivers/net/ethernet/emulex/benet/be_ethtool.c +++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c @@ -910,8 +910,9 @@ static void be_set_fw_log_level(struct be_adapter *adapter, u32 level) if (!status) { cfgs = (struct be_fat_conf_params *)(extfat_cmd.va + sizeof(struct be_cmd_resp_hdr)); - for (i = 0; i < cfgs->num_modules; i++) { - for (j = 0; j < cfgs->module[i].num_modes; j++) { + for (i = 0; i < le32_to_cpu(cfgs->num_modules); i++) { + u32 num_modes = le32_to_cpu(cfgs->module[i].num_modes); + for (j = 0; j < num_modes; j++) { if (cfgs->module[i].trace_lvl[j].mode == MODE_UART) cfgs->module[i].trace_lvl[j].dbg_lvl = diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 4d9677174490..4e81401259f9 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -3579,7 +3579,7 @@ u32 be_get_fw_log_level(struct be_adapter *adapter) if (!status) { cfgs = (struct be_fat_conf_params *)(extfat_cmd.va + sizeof(struct be_cmd_resp_hdr)); - for (j = 0; j < cfgs->module[0].num_modes; j++) { + for (j = 0; j < le32_to_cpu(cfgs->module[0].num_modes); j++) { if (cfgs->module[0].trace_lvl[j].mode == MODE_UART) level = cfgs->module[0].trace_lvl[j].dbg_lvl; }