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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2021-06-06 12:37:53 +0200 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2021-06-22 23:23:00 +0200 |
| commit | 2a3b2f59fec10d7c08f90f019b310db418e775bf (patch) | |
| tree | 5c0580582f25b45a212e9362c2675add51440718 /target/linux/generic/backport-5.4/080-wireguard-0129-wireguard-do-not-use-O3.patch | |
| parent | 79481c71dcb9426878b9738755027c994d4d2273 (diff) | |
| download | upstream-2a3b2f59fec10d7c08f90f019b310db418e775bf.tar.gz upstream-2a3b2f59fec10d7c08f90f019b310db418e775bf.tar.bz2 upstream-2a3b2f59fec10d7c08f90f019b310db418e775bf.zip | |
kernel-5.4: backport latest patches for wireguard
These are the latest patches that just landed upstream for 5.13, will be
backported by Greg into 5.10 (because of stable@), and are now in the
5.4 backport branch of wireguard: https://git.zx2c4.com/wireguard-linux/log/?h=backport-5.4.y
Cc: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Stijn Segers <foss@volatilesystems.org>
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0129-wireguard-do-not-use-O3.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/080-wireguard-0129-wireguard-do-not-use-O3.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0129-wireguard-do-not-use-O3.patch b/target/linux/generic/backport-5.4/080-wireguard-0129-wireguard-do-not-use-O3.patch new file mode 100644 index 0000000000..a7890a7384 --- /dev/null +++ b/target/linux/generic/backport-5.4/080-wireguard-0129-wireguard-do-not-use-O3.patch @@ -0,0 +1,33 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: "Jason A. Donenfeld" <Jason@zx2c4.com> +Date: Fri, 4 Jun 2021 17:17:32 +0200 +Subject: [PATCH] wireguard: do not use -O3 + +commit cc5060ca0285efe2728bced399a1955a7ce808b2 upstream. + +Apparently, various versions of gcc have O3-related miscompiles. Looking +at the difference between -O2 and -O3 for gcc 11 doesn't indicate +miscompiles, but the difference also doesn't seem so significant for +performance that it's worth risking. + +Link: https://lore.kernel.org/lkml/CAHk-=wjuoGyxDhAF8SsrTkN0-YfCx7E6jUN3ikC_tn2AKWTTsA@mail.gmail.com/ +Link: https://lore.kernel.org/lkml/CAHmME9otB5Wwxp7H8bR_i2uH2esEMvoBMC8uEXBMH9p0q1s6Bw@mail.gmail.com/ +Reported-by: Linus Torvalds <torvalds@linux-foundation.org> +Fixes: e7096c131e51 ("net: WireGuard secure network tunnel") +Cc: stable@vger.kernel.org +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> +--- + drivers/net/wireguard/Makefile | 3 +-- + 1 file changed, 1 insertion(+), 2 deletions(-) + +--- a/drivers/net/wireguard/Makefile ++++ b/drivers/net/wireguard/Makefile +@@ -1,5 +1,4 @@ +-ccflags-y := -O3 +-ccflags-y += -D'pr_fmt(fmt)=KBUILD_MODNAME ": " fmt' ++ccflags-y := -D'pr_fmt(fmt)=KBUILD_MODNAME ": " fmt' + ccflags-$(CONFIG_WIREGUARD_DEBUG) += -DDEBUG + wireguard-y := main.o + wireguard-y += noise.o |