wireguard: selftests: set panic_on_warn=1 from cmdline

zx2c4 · kuba-moo · commit 3fc1b11e5d72 · 2022-05-04T17:49:57.000-07:00
Rather than setting this once init is running, set panic_on_warn from
the kernel command line, so that it catches splats from WireGuard
initialization code and the various crypto selftests.

Signed-off-by: Jason A. Donenfeld &lt;Jason@zx2c4.com&gt;
Signed-off-by: Jakub Kicinski &lt;kuba@kernel.org&gt;
diff --git a/tools/testing/selftests/wireguard/qemu/arch/aarch64.config b/tools/testing/selftests/wireguard/qemu/arch/aarch64.config
@@ -4,5 +4,5 @@ CONFIG_VIRTIO_MENU=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1"
+CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1280
diff --git a/tools/testing/selftests/wireguard/qemu/arch/aarch64_be.config b/tools/testing/selftests/wireguard/qemu/arch/aarch64_be.config
@@ -5,5 +5,5 @@ CONFIG_VIRTIO_MENU=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1"
+CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1280
diff --git a/tools/testing/selftests/wireguard/qemu/arch/arm.config b/tools/testing/selftests/wireguard/qemu/arch/arm.config
@@ -8,5 +8,5 @@ CONFIG_VIRTIO_MENU=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1"
+CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1024
diff --git a/tools/testing/selftests/wireguard/qemu/arch/armeb.config b/tools/testing/selftests/wireguard/qemu/arch/armeb.config
@@ -8,6 +8,6 @@ CONFIG_VIRTIO_MENU=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1"
+CONFIG_CMDLINE="console=ttyAMA0 wg.success=vport0p1 panic_on_warn=1"
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_FRAME_WARN=1024
diff --git a/tools/testing/selftests/wireguard/qemu/arch/i686.config b/tools/testing/selftests/wireguard/qemu/arch/i686.config
@@ -2,5 +2,5 @@ CONFIG_ACPI=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1024
diff --git a/tools/testing/selftests/wireguard/qemu/arch/m68k.config b/tools/testing/selftests/wireguard/qemu/arch/m68k.config
@@ -5,5 +5,5 @@ CONFIG_MAC=y
 CONFIG_SERIAL_PMACZILOG=y
 CONFIG_SERIAL_PMACZILOG_TTYS=y
 CONFIG_SERIAL_PMACZILOG_CONSOLE=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1024
diff --git a/tools/testing/selftests/wireguard/qemu/arch/mips.config b/tools/testing/selftests/wireguard/qemu/arch/mips.config
@@ -7,5 +7,5 @@ CONFIG_POWER_RESET_SYSCON=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1024
diff --git a/tools/testing/selftests/wireguard/qemu/arch/mips64.config b/tools/testing/selftests/wireguard/qemu/arch/mips64.config
@@ -10,5 +10,5 @@ CONFIG_POWER_RESET_SYSCON=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1280
diff --git a/tools/testing/selftests/wireguard/qemu/arch/mips64el.config b/tools/testing/selftests/wireguard/qemu/arch/mips64el.config
@@ -11,5 +11,5 @@ CONFIG_POWER_RESET_SYSCON=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1280
diff --git a/tools/testing/selftests/wireguard/qemu/arch/mipsel.config b/tools/testing/selftests/wireguard/qemu/arch/mipsel.config
@@ -8,5 +8,5 @@ CONFIG_POWER_RESET_SYSCON=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1024
diff --git a/tools/testing/selftests/wireguard/qemu/arch/powerpc.config b/tools/testing/selftests/wireguard/qemu/arch/powerpc.config
@@ -6,5 +6,5 @@ CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_MATH_EMULATION=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1024
diff --git a/tools/testing/selftests/wireguard/qemu/arch/powerpc64.config b/tools/testing/selftests/wireguard/qemu/arch/powerpc64.config
@@ -7,7 +7,7 @@ CONFIG_PPC_RADIX_MMU=y
 CONFIG_HVC_CONSOLE=y
 CONFIG_CPU_BIG_ENDIAN=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=hvc0 wg.success=hvc1"
+CONFIG_CMDLINE="console=hvc0 wg.success=hvc1 panic_on_warn=1"
 CONFIG_SECTION_MISMATCH_WARN_ONLY=y
 CONFIG_FRAME_WARN=1280
 CONFIG_THREAD_SHIFT=14
diff --git a/tools/testing/selftests/wireguard/qemu/arch/powerpc64le.config b/tools/testing/selftests/wireguard/qemu/arch/powerpc64le.config
@@ -7,7 +7,7 @@ CONFIG_PPC_RADIX_MMU=y
 CONFIG_HVC_CONSOLE=y
 CONFIG_CPU_LITTLE_ENDIAN=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=hvc0 wg.success=hvc1"
+CONFIG_CMDLINE="console=hvc0 wg.success=hvc1 panic_on_warn=1"
 CONFIG_SECTION_MISMATCH_WARN_ONLY=y
 CONFIG_FRAME_WARN=1280
 CONFIG_THREAD_SHIFT=14
diff --git a/tools/testing/selftests/wireguard/qemu/arch/riscv32.config b/tools/testing/selftests/wireguard/qemu/arch/riscv32.config
@@ -8,5 +8,5 @@ CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_VIRTIO_MENU=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_CONSOLE=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=vport0p1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=vport0p1 panic_on_warn=1"
 CONFIG_CMDLINE_FORCE=y
diff --git a/tools/testing/selftests/wireguard/qemu/arch/riscv64.config b/tools/testing/selftests/wireguard/qemu/arch/riscv64.config
@@ -8,5 +8,5 @@ CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_VIRTIO_MENU=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_VIRTIO_CONSOLE=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=vport0p1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=vport0p1 panic_on_warn=1"
 CONFIG_CMDLINE_FORCE=y
diff --git a/tools/testing/selftests/wireguard/qemu/arch/s390x.config b/tools/testing/selftests/wireguard/qemu/arch/s390x.config
@@ -3,4 +3,4 @@ CONFIG_SCLP_VT220_CONSOLE=y
 CONFIG_VIRTIO_MENU=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_S390_GUEST=y
-CONFIG_CMDLINE="console=ttysclp0 wg.success=vport0p1"
+CONFIG_CMDLINE="console=ttysclp0 wg.success=vport0p1 panic_on_warn=1"
diff --git a/tools/testing/selftests/wireguard/qemu/arch/x86_64.config b/tools/testing/selftests/wireguard/qemu/arch/x86_64.config
@@ -2,5 +2,5 @@ CONFIG_ACPI=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_CMDLINE_BOOL=y
-CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1"
+CONFIG_CMDLINE="console=ttyS0 wg.success=ttyS1 panic_on_warn=1"
 CONFIG_FRAME_WARN=1280
diff --git a/tools/testing/selftests/wireguard/qemu/init.c b/tools/testing/selftests/wireguard/qemu/init.c
@@ -110,12 +110,6 @@ static void enable_logging(void)
 			panic("write(exception-trace)");
 		close(fd);
 	}
-	fd = open("/proc/sys/kernel/panic_on_warn", O_WRONLY);
-	if (fd >= 0) {
-		if (write(fd, "1\n", 2) != 2)
-			panic("write(panic_on_warn)");
-		close(fd);
-	}
 }
 
 static void kmod_selftests(void)
