diff options
Diffstat (limited to '0032-xen-ubsan-Fix-UB-in-type_descriptor-declaration.patch')
| -rw-r--r-- | 0032-xen-ubsan-Fix-UB-in-type_descriptor-declaration.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/0032-xen-ubsan-Fix-UB-in-type_descriptor-declaration.patch b/0032-xen-ubsan-Fix-UB-in-type_descriptor-declaration.patch new file mode 100644 index 0000000..c7c0968 --- /dev/null +++ b/0032-xen-ubsan-Fix-UB-in-type_descriptor-declaration.patch @@ -0,0 +1,39 @@ +From 5397ab9995f7354e7f8122a8a91c810256afa3d1 Mon Sep 17 00:00:00 2001 +From: Andrew Cooper <andrew.cooper3@citrix.com> +Date: Wed, 26 Jun 2024 13:42:30 +0200 +Subject: [PATCH 32/56] xen/ubsan: Fix UB in type_descriptor declaration + +struct type_descriptor is arranged with a NUL terminated string following the +kind/info fields. + +The only reason this doesn't trip UBSAN detection itself (on more modern +compilers at least) is because struct type_descriptor is only referenced in +suppressed regions. + +Switch the declaration to be a real flexible member. No functional change. + +Fixes: 00fcf4dd8eb4 ("xen/ubsan: Import ubsan implementation from Linux 4.13") +Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> +Reviewed-by: Jan Beulich <jbeulich@suse.com> +master commit: bd59af99700f075d06a6d47a16f777c9519928e0 +master date: 2024-06-18 14:55:04 +0100 +--- + xen/common/ubsan/ubsan.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/xen/common/ubsan/ubsan.h b/xen/common/ubsan/ubsan.h +index a3159040fe..3db42e75b1 100644 +--- a/xen/common/ubsan/ubsan.h ++++ b/xen/common/ubsan/ubsan.h +@@ -10,7 +10,7 @@ enum { + struct type_descriptor { + u16 type_kind; + u16 type_info; +- char type_name[1]; ++ char type_name[]; + }; + + struct source_location { +-- +2.45.2 + |