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authorKhem Raj <raj.khem@gmail.com>2021-02-26 23:41:31 -0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2021-03-01 11:12:16 +0000
commite7dc30cefd8d408cbd8730ab4efde5bf8b681bb1 (patch)
tree304b6fdafed509e6ee4d7588f2de5d2bc9e2fdef
parent42c9988492254722846a986a436a6ae17af5e199 (diff)
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dtc: Fix array-bounds error
Fixes | libfdt/libfdt.h:251:28: error: array subscript 'struct fdt_header[0]' is partly outside array bounds of 'unsigned char[4]' [-Werror=array-bounds] | 251 | fdth->name = cpu_to_fdt32(val); \ | | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~ (From OE-Core rev: cd4fe4ec658ce4861fc970149f78b0ca7fda8fe0) Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
-rw-r--r--meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch35
-rw-r--r--meta/recipes-kernel/dtc/dtc_1.6.0.bb2
2 files changed, 37 insertions, 0 deletions
diff --git a/meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch b/meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch
new file mode 100644
index 0000000000..ec825cbf7b
--- /dev/null
+++ b/meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch
@@ -0,0 +1,35 @@
+From 4827e0db6c4f7dea7f4094f49d3bb48ef6dfdc2d Mon Sep 17 00:00:00 2001
+From: David Gibson <david@gibson.dropbear.id.au>
+Date: Wed, 6 Jan 2021 14:52:26 +1100
+Subject: [PATCH] fdtdump: Fix gcc11 warning
+
+In one place, fdtdump abuses fdt_set_magic(), passing it just a small char
+array instead of the full fdt header it expects. That's relying on the
+fact that in fact fdt_set_magic() will only actually access the first 4
+bytes of the buffer.
+
+This trips a new warning in GCC 11 - and it's entirely possible it was
+always UB. So, don't do that.
+
+Upstream-Status: Backport [https://git.kernel.org/pub/scm/utils/dtc/dtc.git/patch/?id=ca16a723fa9dde9c5da80dba567f48715000e77c]
+Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
+---
+ fdtdump.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/fdtdump.c b/fdtdump.c
+index 9613bef..d9fb374 100644
+--- a/fdtdump.c
++++ b/fdtdump.c
+@@ -217,7 +217,7 @@ int main(int argc, char *argv[])
+ char *p = buf;
+ char *endp = buf + len;
+
+- fdt_set_magic(smagic, FDT_MAGIC);
++ fdt32_st(smagic, FDT_MAGIC);
+
+ /* poor man's memmem */
+ while ((endp - p) >= FDT_MAGIC_SIZE) {
+--
+2.30.1
+
diff --git a/meta/recipes-kernel/dtc/dtc_1.6.0.bb b/meta/recipes-kernel/dtc/dtc_1.6.0.bb
index 92df70d9fc..a407137859 100644
--- a/meta/recipes-kernel/dtc/dtc_1.6.0.bb
+++ b/meta/recipes-kernel/dtc/dtc_1.6.0.bb
@@ -5,6 +5,8 @@ LIC_FILES_CHKSUM = "file://GPL;md5=b234ee4d69f5fce4486a80fdaf4a4263 \
SRCREV = "2525da3dba9beceb96651dc2986581871dbeca30"
+SRC_URI += "file://0001-fdtdump-Fix-gcc11-warning.patch"
+
S = "${WORKDIR}/git"
BBCLASSEXTEND = "native nativesdk"