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authorOlof Johansson <olof@lixom.net>2018-12-31 11:54:03 -0800
committerOlof Johansson <olof@lixom.net>2018-12-31 11:54:03 -0800
commitcac1fc8fb561ac766468394d49c3dd11a2b8cb44 (patch)
tree5483f72b13b766cfbd6f025d2a828fef3d1d0203 /kernel/trace/bpf_trace.c
parentbd3fde386decf09317ff4a07cd0d05380a22f525 (diff)
parent54518ed45734bb7ebf2773b1d32120c62338cc93 (diff)
downloadlinux-next-cac1fc8fb561ac766468394d49c3dd11a2b8cb44.tar.gz
Merge branch 'fixes' into next/soc
Merge in fixes here, since the last batch didn't make it in before the release of 4.20, and we might as well group them with this set of patches. * fixes: (822 commits) arm64: dts: renesas: draak: Fix CVBS input ARM: dts: Fix OMAP4430 SDP Ethernet startup ARM: dts: am335x-pdu001: Fix polarity of card detection input ARM: OMAP1: ams-delta: Fix audio permanently muted ARM: dts: omap5: Fix dual-role mode on Super-Speed port arm64: dts: rockchip: fix rk3399-rockpro64 regulator gpios ARM: dts: imx7d-nitrogen7: Fix the description of the Wifi clock ARM: imx: update the cpu power up timing setting on i.mx6sx Revert "arm64: dts: marvell: add CPU Idle power state support on Armada 7K/8K" ARM: dts: imx7d-pico: Describe the Wifi clock ARM: dts: realview: Fix some more duplicate regulator nodes MAINTAINERS: update entry for MMP platform ARM: mmp/mmp2: fix cpu_is_mmp2() on mmp2-dt MAINTAINERS: mediatek: Update SoC entry ARM: dts: bcm2837: Fix polarity of wifi reset GPIOs + Linux 4.20-rc5 Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'kernel/trace/bpf_trace.c')
-rw-r--r--kernel/trace/bpf_trace.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 08fcfe440c63..9864a35c8bb5 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -196,11 +196,13 @@ BPF_CALL_5(bpf_trace_printk, char *, fmt, u32, fmt_size, u64, arg1,
i++;
} else if (fmt[i] == 'p' || fmt[i] == 's') {
mod[fmt_cnt]++;
- i++;
- if (!isspace(fmt[i]) && !ispunct(fmt[i]) && fmt[i] != 0)
+ /* disallow any further format extensions */
+ if (fmt[i + 1] != 0 &&
+ !isspace(fmt[i + 1]) &&
+ !ispunct(fmt[i + 1]))
return -EINVAL;
fmt_cnt++;
- if (fmt[i - 1] == 's') {
+ if (fmt[i] == 's') {
if (str_seen)
/* allow only one '%s' per fmt string */
return -EINVAL;