Several uses of AHASH_REQUEST_ON_STACK() will trigger FRAME_WARN warnings (when less than 2048) once the VLA is no longer hidden from the check: drivers/block/drbd/drbd_worker.c:325:1: warning: the frame size of 1112 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/block/drbd/drbd_worker.c:352:1: warning: the frame size of 1120 bytes is larger than 1024 bytes [-Wframe-larger-than=] crypto/ccm.c:235:1: warning: the frame size of 1184 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/md/dm-crypt.c:353:1: warning: the frame size of 1096 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/net/ppp/ppp_mppe.c:158:1: warning: the frame size of 1168 bytes is larger than 1024 bytes [-Wframe-larger-than=] net/wireless/lib80211_crypt_tkip.c:537:1: warning: the frame size of 1136 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_tkip.c:528:1: warning: the frame size of 1136 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/staging/rtl8192e/rtllib_crypt_tkip.c:531:1: warning: the frame size of 1136 bytes is larger than 1024 bytes [-Wframe-larger-than=] This bumps the affected objects by 20% to silence the warnings while still providing coverage is anything grows even more. Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> --- crypto/Makefile | 1 + drivers/block/drbd/Makefile | 2 ++ drivers/md/Makefile | 1 + drivers/net/ppp/Makefile | 1 + drivers/staging/rtl8192e/Makefile | 1 + drivers/staging/rtl8192u/Makefile | 1 + drivers/staging/rtl8192u/ieee80211/Makefile | 1 + net/wireless/Makefile | 1 + 8 files changed, 9 insertions(+) diff --git a/crypto/Makefile b/crypto/Makefile index 6d1d40eeb964..a4487b61ac4e 100644 --- a/crypto/Makefile +++ b/crypto/Makefile @@ -85,6 +85,7 @@ obj-$(CONFIG_CRYPTO_CTR) += ctr.o obj-$(CONFIG_CRYPTO_KEYWRAP) += keywrap.o obj-$(CONFIG_CRYPTO_GCM) += gcm.o obj-$(CONFIG_CRYPTO_CCM) += ccm.o +CFLAGS_ccm.o += $(FRAME_WARN_BUMP_FLAG) obj-$(CONFIG_CRYPTO_CHACHA20POLY1305) += chacha20poly1305.o obj-$(CONFIG_CRYPTO_AEGIS128) += aegis128.o obj-$(CONFIG_CRYPTO_AEGIS128L) += aegis128l.o diff --git a/drivers/block/drbd/Makefile b/drivers/block/drbd/Makefile index 8bd534697d1b..9b6184487cb4 100644 --- a/drivers/block/drbd/Makefile +++ b/drivers/block/drbd/Makefile @@ -7,3 +7,5 @@ drbd-y += drbd_nla.o drbd-$(CONFIG_DEBUG_FS) += drbd_debugfs.o obj-$(CONFIG_BLK_DEV_DRBD) += drbd.o + +CFLAGS_drbd_worker.o += $(FRAME_WARN_BUMP_FLAG) diff --git a/drivers/md/Makefile b/drivers/md/Makefile index 822f4e8753bc..639ff6599846 100644 --- a/drivers/md/Makefile +++ b/drivers/md/Makefile @@ -47,6 +47,7 @@ obj-$(CONFIG_DM_UNSTRIPED) += dm-unstripe.o obj-$(CONFIG_DM_BUFIO) += dm-bufio.o obj-$(CONFIG_DM_BIO_PRISON) += dm-bio-prison.o obj-$(CONFIG_DM_CRYPT) += dm-crypt.o +CFLAGS_dm-crypt.o += $(FRAME_WARN_BUMP_FLAG) obj-$(CONFIG_DM_DELAY) += dm-delay.o obj-$(CONFIG_DM_FLAKEY) += dm-flakey.o obj-$(CONFIG_DM_MULTIPATH) += dm-multipath.o dm-round-robin.o diff --git a/drivers/net/ppp/Makefile b/drivers/net/ppp/Makefile index 16c457d6b324..18f35e449c93 100644 --- a/drivers/net/ppp/Makefile +++ b/drivers/net/ppp/Makefile @@ -8,6 +8,7 @@ obj-$(CONFIG_PPP_ASYNC) += ppp_async.o obj-$(CONFIG_PPP_BSDCOMP) += bsd_comp.o obj-$(CONFIG_PPP_DEFLATE) += ppp_deflate.o obj-$(CONFIG_PPP_MPPE) += ppp_mppe.o +CFLAGS_ppp_mppe.o += $(FRAME_WARN_BUMP_FLAG) obj-$(CONFIG_PPP_SYNC_TTY) += ppp_synctty.o obj-$(CONFIG_PPPOE) += pppox.o pppoe.o obj-$(CONFIG_PPPOL2TP) += pppox.o diff --git a/drivers/staging/rtl8192e/Makefile b/drivers/staging/rtl8192e/Makefile index 6af519938868..fde738cdf876 100644 --- a/drivers/staging/rtl8192e/Makefile +++ b/drivers/staging/rtl8192e/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_RTLLIB) += rtllib.o obj-$(CONFIG_RTLLIB_CRYPTO_CCMP) += rtllib_crypt_ccmp.o obj-$(CONFIG_RTLLIB_CRYPTO_TKIP) += rtllib_crypt_tkip.o +CFLAGS_rtllib_crypt_tkip.o += $(FRAME_WARN_BUMP_FLAG) obj-$(CONFIG_RTLLIB_CRYPTO_WEP) += rtllib_crypt_wep.o obj-$(CONFIG_RTL8192E) += rtl8192e/ diff --git a/drivers/staging/rtl8192u/Makefile b/drivers/staging/rtl8192u/Makefile index 3022728a364c..ad059546df88 100644 --- a/drivers/staging/rtl8192u/Makefile +++ b/drivers/staging/rtl8192u/Makefile @@ -26,5 +26,6 @@ r8192u_usb-y := r8192U_core.o r8180_93cx6.o r8192U_wx.o \ ieee80211/rtl819x_TSProc.o \ ieee80211/rtl819x_BAProc.o \ ieee80211/dot11d.o +CFLAGS_ieee80211_crypt_tkip.o += $(FRAME_WARN_BUMP_FLAG) obj-$(CONFIG_RTL8192U) += r8192u_usb.o diff --git a/drivers/staging/rtl8192u/ieee80211/Makefile b/drivers/staging/rtl8192u/ieee80211/Makefile index 0d4d6489f767..9f3a06674c1a 100644 --- a/drivers/staging/rtl8192u/ieee80211/Makefile +++ b/drivers/staging/rtl8192u/ieee80211/Makefile @@ -17,6 +17,7 @@ ieee80211-rsl-objs := ieee80211_rx.o \ ieee80211_crypt-rsl-objs := ieee80211_crypt.o ieee80211_crypt_tkip-rsl-objs := ieee80211_crypt_tkip.o +CFLAGS_ieee80211_crypt_tkip.o += $(FRAME_WARN_BUMP_FLAG) ieee80211_crypt_ccmp-rsl-objs := ieee80211_crypt_ccmp.o ieee80211_crypt_wep-rsl-objs := ieee80211_crypt_wep.o diff --git a/net/wireless/Makefile b/net/wireless/Makefile index 1d84f91bbfb0..f6af5a6233e1 100644 --- a/net/wireless/Makefile +++ b/net/wireless/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_LIB80211) += lib80211.o obj-$(CONFIG_LIB80211_CRYPT_WEP) += lib80211_crypt_wep.o obj-$(CONFIG_LIB80211_CRYPT_CCMP) += lib80211_crypt_ccmp.o obj-$(CONFIG_LIB80211_CRYPT_TKIP) += lib80211_crypt_tkip.o +CFLAGS_lib80211_crypt_tkip.o += $(FRAME_WARN_BUMP_FLAG) obj-$(CONFIG_WEXT_CORE) += wext-core.o obj-$(CONFIG_WEXT_PROC) += wext-proc.o -- 2.17.1
