linux-kernel - [RFC PATCH V3 37/43] rv64ilp32_abi: random: Adapt fast

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250325121624.523258-38-guoren@kernel.org>
Date: Tue, 25 Mar 2025 08:16:18 -0400
From: guoren@...nel.org
To: arnd@...db.de,
	gregkh@...uxfoundation.org,
	torvalds@...ux-foundation.org,
	paul.walmsley@...ive.com,
	palmer@...belt.com,
	anup@...infault.org,
	atishp@...shpatra.org,
	oleg@...hat.com,
	kees@...nel.org,
	tglx@...utronix.de,
	will@...nel.org,
	mark.rutland@....com,
	brauner@...nel.org,
	akpm@...ux-foundation.org,
	rostedt@...dmis.org,
	edumazet@...gle.com,
	unicorn_wang@...look.com,
	inochiama@...look.com,
	gaohan@...as.ac.cn,
	shihua@...as.ac.cn,
	jiawei@...as.ac.cn,
	wuwei2016@...as.ac.cn,
	drew@...7.com,
	prabhakar.mahadev-lad.rj@...renesas.com,
	ctsai390@...estech.com,
	wefu@...hat.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	josef@...icpanda.com,
	dsterba@...e.com,
	mingo@...hat.com,
	peterz@...radead.org,
	boqun.feng@...il.com,
	guoren@...nel.org,
	xiao.w.wang@...el.com,
	qingfang.deng@...lower.com.cn,
	leobras@...hat.com,
	jszhang@...nel.org,
	conor.dooley@...rochip.com,
	samuel.holland@...ive.com,
	yongxuan.wang@...ive.com,
	luxu.kernel@...edance.com,
	david@...hat.com,
	ruanjinjie@...wei.com,
	cuiyunhui@...edance.com,
	wangkefeng.wang@...wei.com,
	qiaozhe@...as.ac.cn
Cc: ardb@...nel.org,
	ast@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	kvm@...r.kernel.org,
	kvm-riscv@...ts.infradead.org,
	linux-mm@...ck.org,
	linux-crypto@...r.kernel.org,
	bpf@...r.kernel.org,
	linux-input@...r.kernel.org,
	linux-perf-users@...r.kernel.org,
	linux-serial@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-arch@...r.kernel.org,
	maple-tree@...ts.infradead.org,
	linux-trace-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-atm-general@...ts.sourceforge.net,
	linux-btrfs@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	coreteam@...filter.org,
	linux-nfs@...r.kernel.org,
	linux-sctp@...r.kernel.org,
	linux-usb@...r.kernel.org,
	linux-media@...r.kernel.org
Subject: [RFC PATCH V3 37/43] rv64ilp32_abi: random: Adapt fast_pool struct

From: "Guo Ren (Alibaba DAMO Academy)" <guoren@...nel.org>

RV64ILP32 ABI systems have BITS_PER_LONG set to 32, matching
sizeof(compat_ulong_t). Adjust code

Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@...nel.org>
---
 drivers/char/random.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 2581186fa61b..0bfbe02ee255 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1015,7 +1015,11 @@ EXPORT_SYMBOL_GPL(unregister_random_vmfork_notifier);
 #endif
 
 struct fast_pool {
+#ifdef CONFIG_64BIT
+	u64 pool[4];
+#else
 	unsigned long pool[4];
+#endif
 	unsigned long last;
 	unsigned int count;
 	struct timer_list mix;
@@ -1040,7 +1044,11 @@ static DEFINE_PER_CPU(struct fast_pool, irq_randomness) = {
  * and therefore this has no security on its own. s represents the
  * four-word SipHash state, while v represents a two-word input.
  */
+#ifdef CONFIG_64BIT
+static void fast_mix(u64 s[4], u64 v1, u64 v2)
+#else
 static void fast_mix(unsigned long s[4], unsigned long v1, unsigned long v2)
+#endif
 {
 	s[3] ^= v1;
 	FASTMIX_PERM(s[0], s[1], s[2], s[3]);
-- 
2.40.1