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-rw-r--r--pkgs/os-specific/linux/kernel-headers/default.nix9
-rw-r--r--pkgs/os-specific/linux/kernel-headers/revert-af_packet-flex.patch31
2 files changed, 37 insertions, 3 deletions
diff --git a/pkgs/os-specific/linux/kernel-headers/default.nix b/pkgs/os-specific/linux/kernel-headers/default.nix
index b1c0d3ba50d..e0a3c4319b8 100644
--- a/pkgs/os-specific/linux/kernel-headers/default.nix
+++ b/pkgs/os-specific/linux/kernel-headers/default.nix
@@ -111,15 +111,18 @@ let
 in {
   inherit makeLinuxHeaders;
 
-  linuxHeaders = let version = "6.4"; in
+  linuxHeaders = let version = "6.5"; in
     makeLinuxHeaders {
       inherit version;
       src = fetchurl {
         url = "mirror://kernel/linux/kernel/v${lib.versions.major version}.x/linux-${version}.tar.xz";
-        hash = "sha256-j6BYjwws7KRMrHeg45ukjJ8AprncaXYcAqXT76yNp/M=";
+        hash = "sha256-eldLvCCALqdrUsp/rwcmf3IEXoYbGJFcUnKpjCer+IQ=";
       };
       patches = [
-         ./no-relocs.patch # for building x86 kernel headers on non-ELF platforms
+        ./no-relocs.patch # for building x86 kernel headers on non-ELF platforms
+
+        # Fix regression turning `struct sockaddr_ll` flexible size.
+        ./revert-af_packet-flex.patch
       ];
     };
 }
diff --git a/pkgs/os-specific/linux/kernel-headers/revert-af_packet-flex.patch b/pkgs/os-specific/linux/kernel-headers/revert-af_packet-flex.patch
new file mode 100644
index 00000000000..ed6c8861d2f
--- /dev/null
+++ b/pkgs/os-specific/linux/kernel-headers/revert-af_packet-flex.patch
@@ -0,0 +1,31 @@
+Revert commit https://github.com/torvalds/linux/commit/a0ade8404c3bc2bf2631cb0f20d372eed22d9d96
+
+The change caused API regression by turning fixed size struct to
+flexible size struct. It was an unintentional change, broke `udp2raw`:
+    https://github.com/NixOS/nixpkgs/pull/252587#issuecomment-1744427473
+--- a/include/uapi/linux/if_packet.h
++++ b/include/uapi/linux/if_packet.h
+@@ -18,11 +18,7 @@ struct sockaddr_ll {
+ 	unsigned short	sll_hatype;
+ 	unsigned char	sll_pkttype;
+ 	unsigned char	sll_halen;
+-	union {
+-		unsigned char	sll_addr[8];
+-		/* Actual length is in sll_halen. */
+-		__DECLARE_FLEX_ARRAY(unsigned char, sll_addr_flex);
+-	};
++	unsigned char	sll_addr[8];
+ };
+ 
+ /* Packet types */
+--- a/net/packet/af_packet.c
++++ b/net/packet/af_packet.c
+@@ -3607,7 +3607,7 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
+ 	if (dev) {
+ 		sll->sll_hatype = dev->type;
+ 		sll->sll_halen = dev->addr_len;
+-		memcpy(sll->sll_addr_flex, dev->dev_addr, dev->addr_len);
++		memcpy(sll->sll_addr, dev->dev_addr, dev->addr_len);
+ 	} else {
+ 		sll->sll_hatype = 0;	/* Bad: we have no ARPHRD_UNSPEC */
+ 		sll->sll_halen = 0;