From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Wang YanQing <udknight@gmail.com>,
Alexei Starovoitov <ast@kernel.org>,
Sasha Levin <sashal@kernel.org>,
netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 57/57] bpf, x86_32: Fix logic error in BPF_LDX zero-extension
Date: Thu, 30 Apr 2020 09:52:18 -0400 [thread overview]
Message-ID: <20200430135218.20372-57-sashal@kernel.org> (raw)
In-Reply-To: <20200430135218.20372-1-sashal@kernel.org>
From: Wang YanQing <udknight@gmail.com>
[ Upstream commit 5ca1ca01fae1e90f8d010eb1d83374f28dc11ee6 ]
When verifier_zext is true, we don't need to emit code
for zero-extension.
Fixes: 836256bf5f37 ("x32: bpf: eliminate zero extension code-gen")
Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200423050637.GA4029@udknight
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/x86/net/bpf_jit_comp32.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/net/bpf_jit_comp32.c b/arch/x86/net/bpf_jit_comp32.c
index ba7d9ccfc6626..66cd150b7e541 100644
--- a/arch/x86/net/bpf_jit_comp32.c
+++ b/arch/x86/net/bpf_jit_comp32.c
@@ -1847,7 +1847,7 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
case BPF_B:
case BPF_H:
case BPF_W:
- if (!bpf_prog->aux->verifier_zext)
+ if (bpf_prog->aux->verifier_zext)
break;
if (dstk) {
EMIT3(0xC7, add_1reg(0x40, IA32_EBP),
--
2.20.1
prev parent reply other threads:[~2020-04-30 14:04 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 13:51 [PATCH AUTOSEL 5.4 01/57] drm/bridge: analogix_dp: Split bind() into probe() and real bind() Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 02/57] iio:ad7797: Use correct attribute_group Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 03/57] ASoC: topology: Check return value of soc_tplg_create_tlv Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 04/57] ASoC: topology: Check return value of soc_tplg_*_create Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 05/57] ASoC: topology: Check soc_tplg_add_route return value Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 06/57] ASoC: topology: Check return value of pcm_new_ver Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 07/57] ASoC: topology: Check return value of soc_tplg_dai_config Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 08/57] nfsd: memory corruption in nfsd4_lock() Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 09/57] selftests/ipc: Fix test failure seen after initial test run Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 10/57] drivers: soc: xilinx: fix firmware driver Kconfig dependency Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 11/57] ASoC: sgtl5000: Fix VAG power-on handling Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 12/57] ASoC: q6dsp6: q6afe-dai: add missing channels to MI2S DAIs Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 13/57] ASoC: topology: Fix endianness issue Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 14/57] usb: dwc3: gadget: Properly set maxpacket limit Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 15/57] usb: dwc3: gadget: Do link recovery for SS and SSP Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 16/57] ASoC: rsnd: Fix parent SSI start/stop in multi-SSI mode Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 17/57] ASoC: rsnd: Fix HDMI channel mapping for " Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 18/57] ASoC: codecs: hdac_hdmi: Fix incorrect use of list_for_each_entry Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 19/57] ARM: dts: bcm283x: Disable dsi0 node Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 20/57] remoteproc: qcom_q6v5_mss: fix a bug in q6v5_probe() Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 21/57] usb: gadget: udc: atmel: Fix vbus disconnect handling Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 22/57] svcrdma: Fix trace point use-after-free race Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 23/57] ASoC: stm32: sai: fix sai probe Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 24/57] ASoC: SOF: Intel: add min/max channels for SSP on Baytrail/Broadwell Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 25/57] drm/amdgpu: Correctly initialize thermal controller for GPUs with Powerplay table v0 (e.g Hawaii) Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 26/57] wimax/i2400m: Fix potential urb refcnt leak Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 27/57] net: stmmac: fix enabling socfpga's ptp_ref_clock Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 28/57] net: stmmac: Fix sub-second increment Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 29/57] netfilter: nat: fix error handling upon registering inet hook Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 30/57] counter: 104-quad-8: Add lock guards - generic interface Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 31/57] ASoC: meson: axg-card: fix codec-to-codec link setup Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 32/57] ASoC: rsnd: Don't treat master SSI in multi SSI setup as parent Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 33/57] ASoC: rsnd: Fix "status check failed" spam for multi-SSI Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 34/57] net/mlx5: Fix failing fw tracer allocation on s390 Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 35/57] net/mlx5e: Don't trigger IRQ multiple times on XSK wakeup to avoid WQ overruns Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 36/57] net/mlx5e: Get the latest values from counters in switchdev mode Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 37/57] cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled Sasha Levin
2020-04-30 13:51 ` [PATCH AUTOSEL 5.4 38/57] bpf: Forbid XADD on spilled pointers for unprivileged users Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 39/57] ASoC: wm8960: Fix wrong clock after suspend & resume Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 40/57] cifs: protect updating server->dstaddr with a spinlock Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 41/57] blk-iocost: Fix error on iocost_ioc_vrate_adj Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 42/57] s390/ftrace: fix potential crashes when switching tracers Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 43/57] scripts/config: allow colons in option strings for sed Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 44/57] sched/core: Fix reset-on-fork from RT with uclamp Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 45/57] perf/core: fix parent pid/tid in task exit events Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 46/57] cifs: do not share tcons with DFS Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 47/57] tracing: Fix memory leaks in trace_events_hist.c Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 48/57] um: ensure `make ARCH=um mrproper` removes arch/$(SUBARCH)/include/generated/ Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 49/57] lib/mpi: Fix building for powerpc with clang Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 50/57] mac80211: sta_info: Add lockdep condition for RCU list usage Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 51/57] afs: Fix to actually set AFS_SERVER_FL_HAVE_EPOCH Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 52/57] afs: Make record checking use TASK_UNINTERRUPTIBLE when appropriate Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 53/57] net: bcmgenet: suppress warnings on failed Rx SKB allocations Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 54/57] net: systemport: " Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 55/57] bpf, x86_32: Fix incorrect encoding in BPF_LDX zero-extension Sasha Levin
2020-04-30 13:52 ` [PATCH AUTOSEL 5.4 56/57] bpf, x86_32: Fix clobbering of dst for BPF_JSET Sasha Levin
2020-04-30 13:52 ` Sasha Levin [this message]
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