From 25ef06fe27a292ad33155045ef7a123be4c0b6ab Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Sat, 1 Aug 2015 16:08:12 -0700 Subject: Drivers: hv: fcopy: dynamically allocate smsg_out in fcopy_send_data() struct hv_start_fcopy is too big to be on stack on i386, the following warning is reported: >> drivers/hv/hv_fcopy.c:159:1: warning: the frame size of 1088 bytes is larger than 1024 bytes [-Wframe-larger-than=] Reported-by: kbuild test robot Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/hv_fcopy.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) (limited to 'drivers/hv/hv_fcopy.c') diff --git a/drivers/hv/hv_fcopy.c b/drivers/hv/hv_fcopy.c index b50dd330cf31..db4b887b889d 100644 --- a/drivers/hv/hv_fcopy.c +++ b/drivers/hv/hv_fcopy.c @@ -116,7 +116,7 @@ static int fcopy_handle_handshake(u32 version) static void fcopy_send_data(struct work_struct *dummy) { - struct hv_start_fcopy smsg_out; + struct hv_start_fcopy *smsg_out = NULL; int operation = fcopy_transaction.fcopy_msg->operation; struct hv_start_fcopy *smsg_in; void *out_src; @@ -136,21 +136,24 @@ static void fcopy_send_data(struct work_struct *dummy) switch (operation) { case START_FILE_COPY: out_len = sizeof(struct hv_start_fcopy); - memset(&smsg_out, 0, out_len); - smsg_out.hdr.operation = operation; + smsg_out = kzalloc(sizeof(*smsg_out), GFP_KERNEL); + if (!smsg_out) + return; + + smsg_out->hdr.operation = operation; smsg_in = (struct hv_start_fcopy *)fcopy_transaction.fcopy_msg; utf16s_to_utf8s((wchar_t *)smsg_in->file_name, W_MAX_PATH, UTF16_LITTLE_ENDIAN, - (__u8 *)&smsg_out.file_name, W_MAX_PATH - 1); + (__u8 *)&smsg_out->file_name, W_MAX_PATH - 1); utf16s_to_utf8s((wchar_t *)smsg_in->path_name, W_MAX_PATH, UTF16_LITTLE_ENDIAN, - (__u8 *)&smsg_out.path_name, W_MAX_PATH - 1); + (__u8 *)&smsg_out->path_name, W_MAX_PATH - 1); - smsg_out.copy_flags = smsg_in->copy_flags; - smsg_out.file_size = smsg_in->file_size; - out_src = &smsg_out; + smsg_out->copy_flags = smsg_in->copy_flags; + smsg_out->file_size = smsg_in->file_size; + out_src = smsg_out; break; default: @@ -168,6 +171,8 @@ static void fcopy_send_data(struct work_struct *dummy) fcopy_transaction.state = HVUTIL_READY; } } + kfree(smsg_out); + return; } -- cgit v1.2.3