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Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , Mike Rapoport , Suren Baghdasaryan , Kees Cook , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vineet Gupta , Russell King , Catalin Marinas , Will Deacon , Brian Cain , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , Dinh Nguyen , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , Richard Weinberger , Anton Ivanov , Johannes Berg , Alexander Viro , Christian Brauner , Jan Kara , Xu Xin , Chengming Zhou , Michal Hocko , Paul Moore , Stephen Smalley , Ondrej Mosnacek , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-fsdevel@vger.kernel.org, selinux@vger.kernel.org Subject: [PATCH v2 06/23] tools/testing/vma: fix VMA flag tests Date: Mon, 16 Mar 2026 13:07:55 +0000 Message-ID: <42b963d3229ed39a758f1bea218fd274a7cd3811.1773665966.git.ljs@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 81zobawjfj5g8ars66juq3kh6n8osiqk X-Rspamd-Server: rspam09 X-Rspam-User: X-Rspamd-Queue-Id: 938631C0005 X-HE-Tag: 1773666552-556895 X-HE-Meta: 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 VG2Lcwpd +/YQ+9/8oP1GmJBye051vlUVia5POByYfKsuj1MvCI2MYkD5beQz8x0NDIhjpJBV8M+Dv8KoZcpQrWgcrOxV6jWpL8M4s6moKgTGu+IZ4kEcIgdvlzdHgiVAEQPeX0kmLxm0+iLIR3m4doEth40Bi3zDLGqLm5yCdbS3SYU1wnVkoq0XiMu2kL8QmDHGDMN8TEdaFtkPURwqRRNByqdvJE52QP/7bxwivhEFMO7874EAb/qG6OLmfzVIOhxkrW7Z0AwrO8O7xKEwmcQmG+hzhGa0PKjXyJL6U28dgZb4yPHWoKkCXRHkiMwPJfQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The VMA tests are incorrectly referencing NUM_VMA_FLAGS, which doesn't exist, rather they should reference NUM_VMA_FLAG_BITS. Additionally, remove the custom-written implementation of __mk_vma_flags() as this means we are not testing the code as present in the kernel, rather add the actual __mk_vma_flags() to dup.h and add #ifdef's to handle declarations differently depending on NUM_VMA_FLAG_BITS. Signed-off-by: Lorenzo Stoakes (Oracle) --- tools/testing/vma/include/custom.h | 19 ------- tools/testing/vma/include/dup.h | 21 ++++++- tools/testing/vma/tests/vma.c | 88 +++++++++++++++++++++++++----- 3 files changed, 92 insertions(+), 36 deletions(-) diff --git a/tools/testing/vma/include/custom.h b/tools/testing/vma/include/custom.h index 7cdd0f60600a..8f33df02816a 100644 --- a/tools/testing/vma/include/custom.h +++ b/tools/testing/vma/include/custom.h @@ -29,8 +29,6 @@ extern unsigned long dac_mmap_min_addr; */ #define pr_warn_once pr_err -#define pgtable_supports_soft_dirty() 1 - struct anon_vma { struct anon_vma *root; struct rb_root_cached rb_root; @@ -99,23 +97,6 @@ static inline void vma_lock_init(struct vm_area_struct *vma, bool reset_refcnt) refcount_set(&vma->vm_refcnt, 0); } -static __always_inline vma_flags_t __mk_vma_flags(size_t count, - const vma_flag_t *bits) -{ - vma_flags_t flags; - int i; - - /* - * For testing purposes: allow invalid bit specification so we can - * easily test. - */ - vma_flags_clear_all(&flags); - for (i = 0; i < count; i++) - if (bits[i] < NUM_VMA_FLAG_BITS) - vma_flags_set_flag(&flags, bits[i]); - return flags; -} - static inline unsigned long vma_kernel_pagesize(struct vm_area_struct *vma) { return PAGE_SIZE; diff --git a/tools/testing/vma/include/dup.h b/tools/testing/vma/include/dup.h index e5fdf6f5a033..64b9089a0018 100644 --- a/tools/testing/vma/include/dup.h +++ b/tools/testing/vma/include/dup.h @@ -854,10 +854,21 @@ static inline void vm_flags_clear(struct vm_area_struct *vma, vma_flags_clear_word(&vma->flags, flags); } -static inline vma_flags_t __mk_vma_flags(size_t count, const vma_flag_t *bits); +static __always_inline vma_flags_t __mk_vma_flags(size_t count, + const vma_flag_t *bits) +{ + vma_flags_t flags; + int i; + + vma_flags_clear_all(&flags); + for (i = 0; i < count; i++) + vma_flags_set_flag(&flags, bits[i]); + + return flags; +} -#define mk_vma_flags(...) __mk_vma_flags(COUNT_ARGS(__VA_ARGS__), \ - (const vma_flag_t []){__VA_ARGS__}) +#define mk_vma_flags(...) __mk_vma_flags(COUNT_ARGS(__VA_ARGS__), \ + (const vma_flag_t []){__VA_ARGS__}) static __always_inline bool vma_flags_test(const vma_flags_t *flags, vma_flag_t bit) @@ -1390,3 +1401,7 @@ static inline int get_sysctl_max_map_count(void) { return READ_ONCE(sysctl_max_map_count); } + +#ifndef pgtable_supports_soft_dirty +#define pgtable_supports_soft_dirty() IS_ENABLED(CONFIG_MEM_SOFT_DIRTY) +#endif diff --git a/tools/testing/vma/tests/vma.c b/tools/testing/vma/tests/vma.c index b2f068c3d6d0..feea6d270233 100644 --- a/tools/testing/vma/tests/vma.c +++ b/tools/testing/vma/tests/vma.c @@ -5,11 +5,11 @@ static bool compare_legacy_flags(vm_flags_t legacy_flags, vma_flags_t flags) const unsigned long legacy_val = legacy_flags; /* The lower word should contain the precise same value. */ const unsigned long flags_lower = flags.__vma_flags[0]; -#if NUM_VMA_FLAGS > BITS_PER_LONG +#if NUM_VMA_FLAG_BITS > BITS_PER_LONG int i; /* All bits in higher flag values should be zero. */ - for (i = 1; i < NUM_VMA_FLAGS / BITS_PER_LONG; i++) { + for (i = 1; i < NUM_VMA_FLAG_BITS / BITS_PER_LONG; i++) { if (flags.__vma_flags[i] != 0) return false; } @@ -116,6 +116,7 @@ static bool test_vma_flags_cleared(void) return true; } +#if NUM_VMA_FLAG_BITS > 64 /* * Assert that VMA flag functions that operate at the system word level function * correctly. @@ -124,10 +125,14 @@ static bool test_vma_flags_word(void) { vma_flags_t flags = EMPTY_VMA_FLAGS; const vma_flags_t comparison = - mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, 64, 65); + mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT + + , 64, 65 + ); /* Set some custom high flags. */ vma_flags_set(&flags, 64, 65); + /* Now overwrite the first word. */ vma_flags_overwrite_word(&flags, VM_READ | VM_WRITE); /* Ensure they are equal. */ @@ -158,12 +163,17 @@ static bool test_vma_flags_word(void) return true; } +#endif /* NUM_VMA_FLAG_BITS > 64 */ /* Ensure that vma_flags_test() and friends works correctly. */ static bool test_vma_flags_test(void) { const vma_flags_t flags = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, - VMA_EXEC_BIT, 64, 65); + VMA_EXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); struct vm_area_desc desc = { .vma_flags = flags, }; @@ -198,7 +208,11 @@ static bool test_vma_flags_test(void) static bool test_vma_flags_test_any(void) { const vma_flags_t flags = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, - VMA_EXEC_BIT, 64, 65); + VMA_EXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); struct vm_area_struct vma; struct vm_area_desc desc; @@ -224,10 +238,12 @@ static bool test_vma_flags_test_any(void) do_test(VMA_READ_BIT, VMA_MAYREAD_BIT, VMA_SEQ_READ_BIT); /* However, the ...test_all() variant should NOT pass. */ do_test_all_false(VMA_READ_BIT, VMA_MAYREAD_BIT, VMA_SEQ_READ_BIT); +#if NUM_VMA_FLAG_BITS > 64 /* But should pass for flags present. */ do_test_all_true(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT, 64, 65); /* Also subsets... */ do_test_all_true(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT, 64); +#endif do_test_all_true(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT); do_test_all_true(VMA_READ_BIT, VMA_WRITE_BIT); do_test_all_true(VMA_READ_BIT); @@ -291,8 +307,16 @@ static bool test_vma_flags_test_any(void) static bool test_vma_flags_clear(void) { vma_flags_t flags = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, - VMA_EXEC_BIT, 64, 65); - vma_flags_t mask = mk_vma_flags(VMA_EXEC_BIT, 64); + VMA_EXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); + vma_flags_t mask = mk_vma_flags(VMA_EXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64 +#endif + ); struct vm_area_struct vma; struct vm_area_desc desc; @@ -303,6 +327,7 @@ static bool test_vma_flags_clear(void) vma_flags_clear_mask(&flags, mask); vma_flags_clear_mask(&vma.flags, mask); vma_desc_clear_flags_mask(&desc, mask); +#if NUM_VMA_FLAG_BITS > 64 ASSERT_FALSE(vma_flags_test_any(&flags, VMA_EXEC_BIT, 64)); ASSERT_FALSE(vma_flags_test_any(&vma.flags, VMA_EXEC_BIT, 64)); ASSERT_FALSE(vma_desc_test_any(&desc, VMA_EXEC_BIT, 64)); @@ -310,6 +335,7 @@ static bool test_vma_flags_clear(void) vma_flags_set(&flags, VMA_EXEC_BIT, 64); vma_set_flags(&vma, VMA_EXEC_BIT, 64); vma_desc_set_flags(&desc, VMA_EXEC_BIT, 64); +#endif /* * Clear the flags and assert clear worked, then reset flags back to @@ -330,20 +356,27 @@ static bool test_vma_flags_clear(void) do_test_and_reset(VMA_READ_BIT); do_test_and_reset(VMA_WRITE_BIT); do_test_and_reset(VMA_EXEC_BIT); +#if NUM_VMA_FLAG_BITS > 64 do_test_and_reset(64); do_test_and_reset(65); +#endif /* Two flags, in different orders. */ do_test_and_reset(VMA_READ_BIT, VMA_WRITE_BIT); do_test_and_reset(VMA_READ_BIT, VMA_EXEC_BIT); +#if NUM_VMA_FLAG_BITS > 64 do_test_and_reset(VMA_READ_BIT, 64); do_test_and_reset(VMA_READ_BIT, 65); +#endif do_test_and_reset(VMA_WRITE_BIT, VMA_READ_BIT); do_test_and_reset(VMA_WRITE_BIT, VMA_EXEC_BIT); +#if NUM_VMA_FLAG_BITS > 64 do_test_and_reset(VMA_WRITE_BIT, 64); do_test_and_reset(VMA_WRITE_BIT, 65); +#endif do_test_and_reset(VMA_EXEC_BIT, VMA_READ_BIT); do_test_and_reset(VMA_EXEC_BIT, VMA_WRITE_BIT); +#if NUM_VMA_FLAG_BITS > 64 do_test_and_reset(VMA_EXEC_BIT, 64); do_test_and_reset(VMA_EXEC_BIT, 65); do_test_and_reset(64, VMA_READ_BIT); @@ -354,6 +387,7 @@ static bool test_vma_flags_clear(void) do_test_and_reset(65, VMA_WRITE_BIT); do_test_and_reset(65, VMA_EXEC_BIT); do_test_and_reset(65, 64); +#endif /* Three flags. */ @@ -367,7 +401,11 @@ static bool test_vma_flags_clear(void) static bool test_vma_flags_empty(void) { vma_flags_t flags = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, - VMA_EXEC_BIT, 64, 65); + VMA_EXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); ASSERT_FLAGS_NONEMPTY(&flags); vma_flags_clear(&flags, VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT); @@ -386,10 +424,19 @@ static bool test_vma_flags_empty(void) static bool test_vma_flags_diff(void) { vma_flags_t flags1 = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, - VMA_EXEC_BIT, 64, 65); + VMA_EXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); + vma_flags_t flags2 = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT, VMA_MAYWRITE_BIT, - VMA_MAYEXEC_BIT, 64, 65, 66, 67); + VMA_MAYEXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65, 66, 67 +#endif + ); vma_flags_t diff = vma_flags_diff_pair(&flags1, &flags2); #if NUM_VMA_FLAG_BITS > 64 @@ -432,12 +479,23 @@ static bool test_vma_flags_diff(void) static bool test_vma_flags_and(void) { vma_flags_t flags1 = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, - VMA_EXEC_BIT, 64, 65); + VMA_EXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65 +#endif + ); vma_flags_t flags2 = mk_vma_flags(VMA_READ_BIT, VMA_WRITE_BIT, VMA_EXEC_BIT, VMA_MAYWRITE_BIT, - VMA_MAYEXEC_BIT, 64, 65, 66, 67); - vma_flags_t flags3 = mk_vma_flags(VMA_IO_BIT, VMA_MAYBE_GUARD_BIT, - 68, 69); + VMA_MAYEXEC_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 64, 65, 66, 67 +#endif + ); + vma_flags_t flags3 = mk_vma_flags(VMA_IO_BIT, VMA_MAYBE_GUARD_BIT +#if NUM_VMA_FLAG_BITS > 64 + , 68, 69 +#endif + ); vma_flags_t and = vma_flags_and_mask(&flags1, flags2); #if NUM_VMA_FLAG_BITS > 64 @@ -502,7 +560,9 @@ static void run_vma_tests(int *num_tests, int *num_fail) TEST(copy_vma); TEST(vma_flags_unchanged); TEST(vma_flags_cleared); +#if NUM_VMA_FLAG_BITS > 64 TEST(vma_flags_word); +#endif TEST(vma_flags_test); TEST(vma_flags_test_any); TEST(vma_flags_clear); -- 2.53.0