linux-kernel - Re: [PATCH v2 0/9] refcount: Improve code-gen

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Message-ID: <Ybc6dDpZ/lxwlUqA@hirez.programming.kicks-ass.net>
Date:   Mon, 13 Dec 2021 13:20:04 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     will@...nel.org, boqun.feng@...il.com
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org, mark.rutland@....com,
        elver@...gle.com, keescook@...omium.org, hch@...radead.org,
        torvalds@...ux-foundation.org, axboe@...nel.dk
Subject: Re: [PATCH v2 0/9] refcount: Improve code-gen



Also, since this will conflict most mighty with Marco's kcsan work in
the rcu tree, I've written the below patch as a replacement for the
instrumentation patch in that series.

It depends on other bits in that series so it cannot be applied here,
but will come in handy when trying to resolve the merge conflict.

---
Subject: locking/atomics, kcsan: Add instrumentation for barriers
From: Peter Zijlstra <peterz@...radead.org>
Date: Thu Dec 9 17:08:16 CET 2021

Adds the required KCSAN instrumentation for barriers of atomics.

[adapted from https://lkml.kernel.org/r/20211130114433.2580590-17-elver@google.com]
Originally-by: Marco Elver <elver@...gle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 include/linux/atomic/atomic-instrumented.h |  141 ++++++++++++++++++++++++++++-
 scripts/atomic/atomic-tbl.sh               |    6 +
 scripts/atomic/gen-atomic-instrumented.sh  |   30 ++++--
 3 files changed, 169 insertions(+), 8 deletions(-)

--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -45,6 +45,7 @@ atomic_set(atomic_t *v, int i)
 static __always_inline void
 atomic_set_release(atomic_t *v, int i)
 {
+	kcsan_release();
 	instrument_atomic_write(v, sizeof(*v));
 	arch_atomic_set_release(v, i);
 }
@@ -59,6 +60,7 @@ atomic_add(int i, atomic_t *v)
 static __always_inline int
 atomic_add_return(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_return(i, v);
 }
@@ -73,6 +75,7 @@ atomic_add_return_acquire(int i, atomic_
 static __always_inline int
 atomic_add_return_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_return_release(i, v);
 }
@@ -87,6 +90,7 @@ atomic_add_return_relaxed(int i, atomic_
 static __always_inline int
 atomic_fetch_add(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_add(i, v);
 }
@@ -101,6 +105,7 @@ atomic_fetch_add_acquire(int i, atomic_t
 static __always_inline int
 atomic_fetch_add_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_add_release(i, v);
 }
@@ -122,6 +127,7 @@ atomic_sub(int i, atomic_t *v)
 static __always_inline int
 atomic_sub_return(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_sub_return(i, v);
 }
@@ -136,6 +142,7 @@ atomic_sub_return_acquire(int i, atomic_
 static __always_inline int
 atomic_sub_return_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_sub_return_release(i, v);
 }
@@ -150,6 +157,7 @@ atomic_sub_return_relaxed(int i, atomic_
 static __always_inline int
 atomic_fetch_sub(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_sub(i, v);
 }
@@ -164,6 +172,7 @@ atomic_fetch_sub_acquire(int i, atomic_t
 static __always_inline int
 atomic_fetch_sub_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_sub_release(i, v);
 }
@@ -185,6 +194,7 @@ atomic_inc(atomic_t *v)
 static __always_inline int
 atomic_inc_return(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_return(v);
 }
@@ -199,6 +209,7 @@ atomic_inc_return_acquire(atomic_t *v)
 static __always_inline int
 atomic_inc_return_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_return_release(v);
 }
@@ -213,6 +224,7 @@ atomic_inc_return_relaxed(atomic_t *v)
 static __always_inline int
 atomic_fetch_inc(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_inc(v);
 }
@@ -227,6 +239,7 @@ atomic_fetch_inc_acquire(atomic_t *v)
 static __always_inline int
 atomic_fetch_inc_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_inc_release(v);
 }
@@ -248,6 +261,7 @@ atomic_dec(atomic_t *v)
 static __always_inline int
 atomic_dec_return(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_return(v);
 }
@@ -262,6 +276,7 @@ atomic_dec_return_acquire(atomic_t *v)
 static __always_inline int
 atomic_dec_return_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_return_release(v);
 }
@@ -276,6 +291,7 @@ atomic_dec_return_relaxed(atomic_t *v)
 static __always_inline int
 atomic_fetch_dec(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_dec(v);
 }
@@ -290,6 +306,7 @@ atomic_fetch_dec_acquire(atomic_t *v)
 static __always_inline int
 atomic_fetch_dec_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_dec_release(v);
 }
@@ -311,6 +328,7 @@ atomic_and(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_and(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_and(i, v);
 }
@@ -325,6 +343,7 @@ atomic_fetch_and_acquire(int i, atomic_t
 static __always_inline int
 atomic_fetch_and_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_and_release(i, v);
 }
@@ -346,6 +365,7 @@ atomic_andnot(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_andnot(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_andnot(i, v);
 }
@@ -360,6 +380,7 @@ atomic_fetch_andnot_acquire(int i, atomi
 static __always_inline int
 atomic_fetch_andnot_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_andnot_release(i, v);
 }
@@ -381,6 +402,7 @@ atomic_or(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_or(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_or(i, v);
 }
@@ -395,6 +417,7 @@ atomic_fetch_or_acquire(int i, atomic_t
 static __always_inline int
 atomic_fetch_or_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_or_release(i, v);
 }
@@ -416,6 +439,7 @@ atomic_xor(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_xor(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_xor(i, v);
 }
@@ -430,6 +454,7 @@ atomic_fetch_xor_acquire(int i, atomic_t
 static __always_inline int
 atomic_fetch_xor_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_xor_release(i, v);
 }
@@ -444,6 +469,7 @@ atomic_fetch_xor_relaxed(int i, atomic_t
 static __always_inline int
 atomic_xchg(atomic_t *v, int i)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_xchg(v, i);
 }
@@ -458,6 +484,7 @@ atomic_xchg_acquire(atomic_t *v, int i)
 static __always_inline int
 atomic_xchg_release(atomic_t *v, int i)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_xchg_release(v, i);
 }
@@ -472,6 +499,7 @@ atomic_xchg_relaxed(atomic_t *v, int i)
 static __always_inline int
 atomic_cmpxchg(atomic_t *v, int old, int new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_cmpxchg(v, old, new);
 }
@@ -486,6 +514,7 @@ atomic_cmpxchg_acquire(atomic_t *v, int
 static __always_inline int
 atomic_cmpxchg_release(atomic_t *v, int old, int new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_cmpxchg_release(v, old, new);
 }
@@ -500,6 +529,7 @@ atomic_cmpxchg_relaxed(atomic_t *v, int
 static __always_inline bool
 atomic_try_cmpxchg(atomic_t *v, int *old, int new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_read_write(old, sizeof(*old));
 	return arch_atomic_try_cmpxchg(v, old, new);
@@ -516,6 +546,7 @@ atomic_try_cmpxchg_acquire(atomic_t *v,
 static __always_inline bool
 atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_read_write(old, sizeof(*old));
 	return arch_atomic_try_cmpxchg_release(v, old, new);
@@ -532,6 +563,7 @@ atomic_try_cmpxchg_relaxed(atomic_t *v,
 static __always_inline bool
 atomic_sub_and_test(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_sub_and_test(i, v);
 }
@@ -539,6 +571,7 @@ atomic_sub_and_test(int i, atomic_t *v)
 static __always_inline bool
 atomic_dec_and_test(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_and_test(v);
 }
@@ -546,6 +579,7 @@ atomic_dec_and_test(atomic_t *v)
 static __always_inline bool
 atomic_inc_and_test(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_and_test(v);
 }
@@ -553,6 +587,7 @@ atomic_inc_and_test(atomic_t *v)
 static __always_inline bool
 atomic_add_negative(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_negative(i, v);
 }
@@ -560,6 +595,7 @@ atomic_add_negative(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_add_unless(atomic_t *v, int a, int u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_add_unless(v, a, u);
 }
@@ -567,6 +603,7 @@ atomic_fetch_add_unless(atomic_t *v, int
 static __always_inline bool
 atomic_add_unless(atomic_t *v, int a, int u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_unless(v, a, u);
 }
@@ -574,6 +611,7 @@ atomic_add_unless(atomic_t *v, int a, in
 static __always_inline bool
 atomic_inc_not_zero(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_not_zero(v);
 }
@@ -581,6 +619,7 @@ atomic_inc_not_zero(atomic_t *v)
 static __always_inline bool
 atomic_inc_unless_negative(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_unless_negative(v);
 }
@@ -588,6 +627,7 @@ atomic_inc_unless_negative(atomic_t *v)
 static __always_inline bool
 atomic_dec_unless_positive(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_unless_positive(v);
 }
@@ -595,6 +635,7 @@ atomic_dec_unless_positive(atomic_t *v)
 static __always_inline int
 atomic_dec_if_positive(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_if_positive(v);
 }
@@ -616,6 +657,7 @@ atomic_dec_if_positive(atomic_t *v)
 #define atomic_dec_and_test_ofl(v, L) \
 ({ \
 	typeof(v) __ai_v = (v); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
 	arch_atomic_dec_and_test_ofl(__ai_v, L); \
 })
@@ -644,6 +686,7 @@ atomic64_set(atomic64_t *v, s64 i)
 static __always_inline void
 atomic64_set_release(atomic64_t *v, s64 i)
 {
+	kcsan_release();
 	instrument_atomic_write(v, sizeof(*v));
 	arch_atomic64_set_release(v, i);
 }
@@ -658,6 +701,7 @@ atomic64_add(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_add_return(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_return(i, v);
 }
@@ -672,6 +716,7 @@ atomic64_add_return_acquire(s64 i, atomi
 static __always_inline s64
 atomic64_add_return_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_return_release(i, v);
 }
@@ -686,6 +731,7 @@ atomic64_add_return_relaxed(s64 i, atomi
 static __always_inline s64
 atomic64_fetch_add(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_add(i, v);
 }
@@ -700,6 +746,7 @@ atomic64_fetch_add_acquire(s64 i, atomic
 static __always_inline s64
 atomic64_fetch_add_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_add_release(i, v);
 }
@@ -721,6 +768,7 @@ atomic64_sub(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_sub_return(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_sub_return(i, v);
 }
@@ -735,6 +783,7 @@ atomic64_sub_return_acquire(s64 i, atomi
 static __always_inline s64
 atomic64_sub_return_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_sub_return_release(i, v);
 }
@@ -749,6 +798,7 @@ atomic64_sub_return_relaxed(s64 i, atomi
 static __always_inline s64
 atomic64_fetch_sub(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_sub(i, v);
 }
@@ -763,6 +813,7 @@ atomic64_fetch_sub_acquire(s64 i, atomic
 static __always_inline s64
 atomic64_fetch_sub_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_sub_release(i, v);
 }
@@ -784,6 +835,7 @@ atomic64_inc(atomic64_t *v)
 static __always_inline s64
 atomic64_inc_return(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_return(v);
 }
@@ -798,6 +850,7 @@ atomic64_inc_return_acquire(atomic64_t *
 static __always_inline s64
 atomic64_inc_return_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_return_release(v);
 }
@@ -812,6 +865,7 @@ atomic64_inc_return_relaxed(atomic64_t *
 static __always_inline s64
 atomic64_fetch_inc(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_inc(v);
 }
@@ -826,6 +880,7 @@ atomic64_fetch_inc_acquire(atomic64_t *v
 static __always_inline s64
 atomic64_fetch_inc_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_inc_release(v);
 }
@@ -847,6 +902,7 @@ atomic64_dec(atomic64_t *v)
 static __always_inline s64
 atomic64_dec_return(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_return(v);
 }
@@ -861,6 +917,7 @@ atomic64_dec_return_acquire(atomic64_t *
 static __always_inline s64
 atomic64_dec_return_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_return_release(v);
 }
@@ -875,6 +932,7 @@ atomic64_dec_return_relaxed(atomic64_t *
 static __always_inline s64
 atomic64_fetch_dec(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_dec(v);
 }
@@ -889,6 +947,7 @@ atomic64_fetch_dec_acquire(atomic64_t *v
 static __always_inline s64
 atomic64_fetch_dec_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_dec_release(v);
 }
@@ -910,6 +969,7 @@ atomic64_and(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_and(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_and(i, v);
 }
@@ -924,6 +984,7 @@ atomic64_fetch_and_acquire(s64 i, atomic
 static __always_inline s64
 atomic64_fetch_and_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_and_release(i, v);
 }
@@ -945,6 +1006,7 @@ atomic64_andnot(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_andnot(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_andnot(i, v);
 }
@@ -959,6 +1021,7 @@ atomic64_fetch_andnot_acquire(s64 i, ato
 static __always_inline s64
 atomic64_fetch_andnot_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_andnot_release(i, v);
 }
@@ -980,6 +1043,7 @@ atomic64_or(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_or(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_or(i, v);
 }
@@ -994,6 +1058,7 @@ atomic64_fetch_or_acquire(s64 i, atomic6
 static __always_inline s64
 atomic64_fetch_or_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_or_release(i, v);
 }
@@ -1015,6 +1080,7 @@ atomic64_xor(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_xor(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_xor(i, v);
 }
@@ -1029,6 +1095,7 @@ atomic64_fetch_xor_acquire(s64 i, atomic
 static __always_inline s64
 atomic64_fetch_xor_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_xor_release(i, v);
 }
@@ -1043,6 +1110,7 @@ atomic64_fetch_xor_relaxed(s64 i, atomic
 static __always_inline s64
 atomic64_xchg(atomic64_t *v, s64 i)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_xchg(v, i);
 }
@@ -1057,6 +1125,7 @@ atomic64_xchg_acquire(atomic64_t *v, s64
 static __always_inline s64
 atomic64_xchg_release(atomic64_t *v, s64 i)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_xchg_release(v, i);
 }
@@ -1071,6 +1140,7 @@ atomic64_xchg_relaxed(atomic64_t *v, s64
 static __always_inline s64
 atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_cmpxchg(v, old, new);
 }
@@ -1085,6 +1155,7 @@ atomic64_cmpxchg_acquire(atomic64_t *v,
 static __always_inline s64
 atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_cmpxchg_release(v, old, new);
 }
@@ -1099,6 +1170,7 @@ atomic64_cmpxchg_relaxed(atomic64_t *v,
 static __always_inline bool
 atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_read_write(old, sizeof(*old));
 	return arch_atomic64_try_cmpxchg(v, old, new);
@@ -1115,6 +1187,7 @@ atomic64_try_cmpxchg_acquire(atomic64_t
 static __always_inline bool
 atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_read_write(old, sizeof(*old));
 	return arch_atomic64_try_cmpxchg_release(v, old, new);
@@ -1131,6 +1204,7 @@ atomic64_try_cmpxchg_relaxed(atomic64_t
 static __always_inline bool
 atomic64_sub_and_test(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_sub_and_test(i, v);
 }
@@ -1138,6 +1212,7 @@ atomic64_sub_and_test(s64 i, atomic64_t
 static __always_inline bool
 atomic64_dec_and_test(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_and_test(v);
 }
@@ -1145,6 +1220,7 @@ atomic64_dec_and_test(atomic64_t *v)
 static __always_inline bool
 atomic64_inc_and_test(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_and_test(v);
 }
@@ -1152,6 +1228,7 @@ atomic64_inc_and_test(atomic64_t *v)
 static __always_inline bool
 atomic64_add_negative(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_negative(i, v);
 }
@@ -1159,6 +1236,7 @@ atomic64_add_negative(s64 i, atomic64_t
 static __always_inline s64
 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_add_unless(v, a, u);
 }
@@ -1166,6 +1244,7 @@ atomic64_fetch_add_unless(atomic64_t *v,
 static __always_inline bool
 atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_unless(v, a, u);
 }
@@ -1173,6 +1252,7 @@ atomic64_add_unless(atomic64_t *v, s64 a
 static __always_inline bool
 atomic64_inc_not_zero(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_not_zero(v);
 }
@@ -1180,6 +1260,7 @@ atomic64_inc_not_zero(atomic64_t *v)
 static __always_inline bool
 atomic64_inc_unless_negative(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_unless_negative(v);
 }
@@ -1187,6 +1268,7 @@ atomic64_inc_unless_negative(atomic64_t
 static __always_inline bool
 atomic64_dec_unless_positive(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_unless_positive(v);
 }
@@ -1194,6 +1276,7 @@ atomic64_dec_unless_positive(atomic64_t
 static __always_inline s64
 atomic64_dec_if_positive(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_if_positive(v);
 }
@@ -1215,6 +1298,7 @@ atomic64_dec_if_positive(atomic64_t *v)
 #define atomic64_dec_and_test_ofl(v, L) \
 ({ \
 	typeof(v) __ai_v = (v); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
 	arch_atomic64_dec_and_test_ofl(__ai_v, L); \
 })
@@ -1243,6 +1327,7 @@ atomic_long_set(atomic_long_t *v, long i
 static __always_inline void
 atomic_long_set_release(atomic_long_t *v, long i)
 {
+	kcsan_release();
 	instrument_atomic_write(v, sizeof(*v));
 	arch_atomic_long_set_release(v, i);
 }
@@ -1257,6 +1342,7 @@ atomic_long_add(long i, atomic_long_t *v
 static __always_inline long
 atomic_long_add_return(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_return(i, v);
 }
@@ -1271,6 +1357,7 @@ atomic_long_add_return_acquire(long i, a
 static __always_inline long
 atomic_long_add_return_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_return_release(i, v);
 }
@@ -1285,6 +1372,7 @@ atomic_long_add_return_relaxed(long i, a
 static __always_inline long
 atomic_long_fetch_add(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_add(i, v);
 }
@@ -1299,6 +1387,7 @@ atomic_long_fetch_add_acquire(long i, at
 static __always_inline long
 atomic_long_fetch_add_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_add_release(i, v);
 }
@@ -1320,6 +1409,7 @@ atomic_long_sub(long i, atomic_long_t *v
 static __always_inline long
 atomic_long_sub_return(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_sub_return(i, v);
 }
@@ -1334,6 +1424,7 @@ atomic_long_sub_return_acquire(long i, a
 static __always_inline long
 atomic_long_sub_return_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_sub_return_release(i, v);
 }
@@ -1348,6 +1439,7 @@ atomic_long_sub_return_relaxed(long i, a
 static __always_inline long
 atomic_long_fetch_sub(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_sub(i, v);
 }
@@ -1362,6 +1454,7 @@ atomic_long_fetch_sub_acquire(long i, at
 static __always_inline long
 atomic_long_fetch_sub_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_sub_release(i, v);
 }
@@ -1383,6 +1476,7 @@ atomic_long_inc(atomic_long_t *v)
 static __always_inline long
 atomic_long_inc_return(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_return(v);
 }
@@ -1397,6 +1491,7 @@ atomic_long_inc_return_acquire(atomic_lo
 static __always_inline long
 atomic_long_inc_return_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_return_release(v);
 }
@@ -1411,6 +1506,7 @@ atomic_long_inc_return_relaxed(atomic_lo
 static __always_inline long
 atomic_long_fetch_inc(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_inc(v);
 }
@@ -1425,6 +1521,7 @@ atomic_long_fetch_inc_acquire(atomic_lon
 static __always_inline long
 atomic_long_fetch_inc_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_inc_release(v);
 }
@@ -1446,6 +1543,7 @@ atomic_long_dec(atomic_long_t *v)
 static __always_inline long
 atomic_long_dec_return(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_return(v);
 }
@@ -1460,6 +1558,7 @@ atomic_long_dec_return_acquire(atomic_lo
 static __always_inline long
 atomic_long_dec_return_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_return_release(v);
 }
@@ -1474,6 +1573,7 @@ atomic_long_dec_return_relaxed(atomic_lo
 static __always_inline long
 atomic_long_fetch_dec(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_dec(v);
 }
@@ -1488,6 +1588,7 @@ atomic_long_fetch_dec_acquire(atomic_lon
 static __always_inline long
 atomic_long_fetch_dec_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_dec_release(v);
 }
@@ -1509,6 +1610,7 @@ atomic_long_and(long i, atomic_long_t *v
 static __always_inline long
 atomic_long_fetch_and(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_and(i, v);
 }
@@ -1523,6 +1625,7 @@ atomic_long_fetch_and_acquire(long i, at
 static __always_inline long
 atomic_long_fetch_and_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_and_release(i, v);
 }
@@ -1544,6 +1647,7 @@ atomic_long_andnot(long i, atomic_long_t
 static __always_inline long
 atomic_long_fetch_andnot(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_andnot(i, v);
 }
@@ -1558,6 +1662,7 @@ atomic_long_fetch_andnot_acquire(long i,
 static __always_inline long
 atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_andnot_release(i, v);
 }
@@ -1579,6 +1684,7 @@ atomic_long_or(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_or(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_or(i, v);
 }
@@ -1593,6 +1699,7 @@ atomic_long_fetch_or_acquire(long i, ato
 static __always_inline long
 atomic_long_fetch_or_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_or_release(i, v);
 }
@@ -1614,6 +1721,7 @@ atomic_long_xor(long i, atomic_long_t *v
 static __always_inline long
 atomic_long_fetch_xor(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_xor(i, v);
 }
@@ -1628,6 +1736,7 @@ atomic_long_fetch_xor_acquire(long i, at
 static __always_inline long
 atomic_long_fetch_xor_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_xor_release(i, v);
 }
@@ -1642,6 +1751,7 @@ atomic_long_fetch_xor_relaxed(long i, at
 static __always_inline long
 atomic_long_xchg(atomic_long_t *v, long i)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_xchg(v, i);
 }
@@ -1656,6 +1766,7 @@ atomic_long_xchg_acquire(atomic_long_t *
 static __always_inline long
 atomic_long_xchg_release(atomic_long_t *v, long i)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_xchg_release(v, i);
 }
@@ -1670,6 +1781,7 @@ atomic_long_xchg_relaxed(atomic_long_t *
 static __always_inline long
 atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_cmpxchg(v, old, new);
 }
@@ -1684,6 +1796,7 @@ atomic_long_cmpxchg_acquire(atomic_long_
 static __always_inline long
 atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_cmpxchg_release(v, old, new);
 }
@@ -1698,6 +1811,7 @@ atomic_long_cmpxchg_relaxed(atomic_long_
 static __always_inline bool
 atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_read_write(old, sizeof(*old));
 	return arch_atomic_long_try_cmpxchg(v, old, new);
@@ -1714,6 +1828,7 @@ atomic_long_try_cmpxchg_acquire(atomic_l
 static __always_inline bool
 atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_read_write(old, sizeof(*old));
 	return arch_atomic_long_try_cmpxchg_release(v, old, new);
@@ -1730,6 +1845,7 @@ atomic_long_try_cmpxchg_relaxed(atomic_l
 static __always_inline bool
 atomic_long_sub_and_test(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_sub_and_test(i, v);
 }
@@ -1737,6 +1853,7 @@ atomic_long_sub_and_test(long i, atomic_
 static __always_inline bool
 atomic_long_dec_and_test(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_and_test(v);
 }
@@ -1744,6 +1861,7 @@ atomic_long_dec_and_test(atomic_long_t *
 static __always_inline bool
 atomic_long_inc_and_test(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_and_test(v);
 }
@@ -1751,6 +1869,7 @@ atomic_long_inc_and_test(atomic_long_t *
 static __always_inline bool
 atomic_long_add_negative(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_negative(i, v);
 }
@@ -1758,6 +1877,7 @@ atomic_long_add_negative(long i, atomic_
 static __always_inline long
 atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_add_unless(v, a, u);
 }
@@ -1765,6 +1885,7 @@ atomic_long_fetch_add_unless(atomic_long
 static __always_inline bool
 atomic_long_add_unless(atomic_long_t *v, long a, long u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_unless(v, a, u);
 }
@@ -1772,6 +1893,7 @@ atomic_long_add_unless(atomic_long_t *v,
 static __always_inline bool
 atomic_long_inc_not_zero(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_not_zero(v);
 }
@@ -1779,6 +1901,7 @@ atomic_long_inc_not_zero(atomic_long_t *
 static __always_inline bool
 atomic_long_inc_unless_negative(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_unless_negative(v);
 }
@@ -1786,6 +1909,7 @@ atomic_long_inc_unless_negative(atomic_l
 static __always_inline bool
 atomic_long_dec_unless_positive(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_unless_positive(v);
 }
@@ -1793,6 +1917,7 @@ atomic_long_dec_unless_positive(atomic_l
 static __always_inline long
 atomic_long_dec_if_positive(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_if_positive(v);
 }
@@ -1814,6 +1939,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define atomic_long_dec_and_test_ofl(v, L) \
 ({ \
 	typeof(v) __ai_v = (v); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_v, sizeof(*__ai_v)); \
 	arch_atomic_long_dec_and_test_ofl(__ai_v, L); \
 })
@@ -1821,6 +1947,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define xchg(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_xchg(__ai_ptr, __VA_ARGS__); \
 })
@@ -1835,6 +1962,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define xchg_release(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_release(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_xchg_release(__ai_ptr, __VA_ARGS__); \
 })
@@ -1849,6 +1977,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg(__ai_ptr, __VA_ARGS__); \
 })
@@ -1863,6 +1992,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg_release(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_release(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg_release(__ai_ptr, __VA_ARGS__); \
 })
@@ -1877,6 +2007,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg64(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg64(__ai_ptr, __VA_ARGS__); \
 })
@@ -1891,6 +2022,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg64_release(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_release(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg64_release(__ai_ptr, __VA_ARGS__); \
 })
@@ -1906,6 +2038,7 @@ atomic_long_dec_if_positive(atomic_long_
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
 	typeof(oldp) __ai_oldp = (oldp); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
 	arch_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
@@ -1924,6 +2057,7 @@ atomic_long_dec_if_positive(atomic_long_
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
 	typeof(oldp) __ai_oldp = (oldp); \
+	kcsan_release(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	instrument_read_write(__ai_oldp, sizeof(*__ai_oldp)); \
 	arch_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
@@ -1941,6 +2075,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg_local(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg_local(__ai_ptr, __VA_ARGS__); \
 })
@@ -1948,6 +2083,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg64_local(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg64_local(__ai_ptr, __VA_ARGS__); \
 })
@@ -1955,6 +2091,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define sync_cmpxchg(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_sync_cmpxchg(__ai_ptr, __VA_ARGS__); \
 })
@@ -1962,6 +2099,7 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg_double(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
 	arch_cmpxchg_double(__ai_ptr, __VA_ARGS__); \
 })
@@ -1969,10 +2107,11 @@ atomic_long_dec_if_positive(atomic_long_
 #define cmpxchg_double_local(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_read_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
 	arch_cmpxchg_double_local(__ai_ptr, __VA_ARGS__); \
 })
 
 
 #endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// ca9d985faafbba0e0827441def0f010d3040d62d
+// 539756d4ae3f55016f5a2101983e0eed82a9b303
--- a/scripts/atomic/atomic-tbl.sh
+++ b/scripts/atomic/atomic-tbl.sh
@@ -42,6 +42,12 @@ meta_has_macro()
 	meta_in "$1" "mn"
 }
 
+#meta_has_rmw(meta)
+meta_has_rmw()
+{
+	! meta_in "$1" "sl"
+}
+
 #find_fallback_template(pfx, name, sfx, order)
 find_fallback_template()
 {
--- a/scripts/atomic/gen-atomic-instrumented.sh
+++ b/scripts/atomic/gen-atomic-instrumented.sh
@@ -5,6 +5,17 @@ ATOMICDIR=$(dirname $0)
 
 . ${ATOMICDIR}/atomic-tbl.sh
 
+#gen_linebreak(meta)
+gen_linebreak()
+{
+	local meta="$1"; shift
+
+	if meta_has_macro "${meta}"; then
+		printf " \\"
+	fi
+	printf "\n"
+}
+
 #gen_param_check(meta, arg)
 gen_param_check()
 {
@@ -38,17 +49,22 @@ gen_param_check()
 	fi
 
 	printf "\tinstrument_${pfx}${rw}(${name}, ${mult}sizeof(*${name}));"
-	if meta_has_macro "${meta}"; then
-		printf " \\"
-	fi
-	printf "\n"
-
+	gen_linebreak "${meta}"
 }
 
-#gen_params_checks(meta, arg...)
+#gen_params_checks(meta, order, arg...)
 gen_params_checks()
 {
 	local meta="$1"; shift
+	local order="$1"; shift
+
+	if [ "${order}" = "_release" ]; then
+		printf "\tkcsan_release();"
+		gen_linebreak "${meta}"
+	elif [ -z "${order}" ] && meta_has_rmw "${meta}" && meta_has_ret "${meta}"; then
+		printf "\tkcsan_mb();"
+		gen_linebreak "${meta}"
+	fi
 
 	while [ "$#" -gt 0 ]; do
 		gen_param_check "$meta" "$1"
@@ -120,7 +136,7 @@ gen_proto_order_variant()
 		atomicname="${pfx}${name}${sfx}${order}"
 	fi
 
-	local checks="$(gen_params_checks "${meta}" "$@")"
+	local checks="$(gen_params_checks "${meta}" "${order}" "$@")"
 	local args="$(gen_args "$@")"
 
 	if meta_has_macro "${meta}"; then