diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Kconfig | 6 | ||||
| -rw-r--r-- | mm/huge_memory.c | 2 | ||||
| -rw-r--r-- | mm/secretmem.c | 4 | ||||
| -rw-r--r-- | mm/slab.h | 8 | ||||
| -rw-r--r-- | mm/slab_common.c | 5 | ||||
| -rw-r--r-- | mm/slub.c | 5 | ||||
| -rw-r--r-- | mm/zswap.c | 1 |
7 files changed, 22 insertions, 9 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index 4c9f5ea13271..4b2a1ef9a161 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -1296,6 +1296,12 @@ config NUMA_EMU into virtual nodes when booted with "numa=fake=N", where N is the number of nodes. This is only useful for debugging. +config ARCH_HAS_USER_SHADOW_STACK + bool + help + The architecture has hardware support for userspace shadow call + stacks (eg, x86 CET, arm64 GCS or RISC-V Zicfiss). + source "mm/damon/Kconfig" endmenu diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 3ca89e0279a7..87b49ecc7b1e 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1586,7 +1586,7 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, int ret = -ENOMEM; pmd = pmdp_get_lockless(src_pmd); - if (unlikely(pmd_special(pmd))) { + if (unlikely(pmd_present(pmd) && pmd_special(pmd))) { dst_ptl = pmd_lock(dst_mm, dst_pmd); src_ptl = pmd_lockptr(src_mm, src_pmd); spin_lock_nested(src_ptl, SINGLE_DEPTH_NESTING); diff --git a/mm/secretmem.c b/mm/secretmem.c index 3afb5ad701e1..399552814fd0 100644 --- a/mm/secretmem.c +++ b/mm/secretmem.c @@ -238,7 +238,7 @@ SYSCALL_DEFINE1(memfd_secret, unsigned int, flags) /* make sure local flags do not confict with global fcntl.h */ BUILD_BUG_ON(SECRETMEM_FLAGS_MASK & O_CLOEXEC); - if (!secretmem_enable) + if (!secretmem_enable || !can_set_direct_map()) return -ENOSYS; if (flags & ~(SECRETMEM_FLAGS_MASK | O_CLOEXEC)) @@ -280,7 +280,7 @@ static struct file_system_type secretmem_fs = { static int __init secretmem_init(void) { - if (!secretmem_enable) + if (!secretmem_enable || !can_set_direct_map()) return 0; secretmem_mnt = kern_mount(&secretmem_fs); diff --git a/mm/slab.h b/mm/slab.h index f22fb760b286..6c6fe6d630ce 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -310,7 +310,7 @@ struct kmem_cache { }; #if defined(CONFIG_SYSFS) && !defined(CONFIG_SLUB_TINY) -#define SLAB_SUPPORTS_SYSFS +#define SLAB_SUPPORTS_SYSFS 1 void sysfs_slab_unlink(struct kmem_cache *s); void sysfs_slab_release(struct kmem_cache *s); #else @@ -546,6 +546,12 @@ static inline bool kmem_cache_debug_flags(struct kmem_cache *s, slab_flags_t fla return false; } +#if IS_ENABLED(CONFIG_SLUB_DEBUG) && IS_ENABLED(CONFIG_KUNIT) +bool slab_in_kunit_test(void); +#else +static inline bool slab_in_kunit_test(void) { return false; } +#endif + #ifdef CONFIG_SLAB_OBJ_EXT /* diff --git a/mm/slab_common.c b/mm/slab_common.c index 744324465615..3d26c257ed8b 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -508,8 +508,9 @@ void kmem_cache_destroy(struct kmem_cache *s) kasan_cache_shutdown(s); err = __kmem_cache_shutdown(s); - WARN(err, "%s %s: Slab cache still has objects when called from %pS", - __func__, s->name, (void *)_RET_IP_); + if (!slab_in_kunit_test()) + WARN(err, "%s %s: Slab cache still has objects when called from %pS", + __func__, s->name, (void *)_RET_IP_); list_del(&s->list); diff --git a/mm/slub.c b/mm/slub.c index 21f71cb6cc06..5b832512044e 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -827,7 +827,7 @@ static bool slab_add_kunit_errors(void) return true; } -static bool slab_in_kunit_test(void) +bool slab_in_kunit_test(void) { struct kunit_resource *resource; @@ -843,7 +843,6 @@ static bool slab_in_kunit_test(void) } #else static inline bool slab_add_kunit_errors(void) { return false; } -static inline bool slab_in_kunit_test(void) { return false; } #endif static inline unsigned int size_from_object(struct kmem_cache *s) @@ -5436,6 +5435,8 @@ static void list_slab_objects(struct kmem_cache *s, struct slab *slab, for_each_object(p, s, addr, slab->objects) { if (!test_bit(__obj_to_index(s, addr, p), object_map)) { + if (slab_add_kunit_errors()) + continue; pr_err("Object 0x%p @offset=%tu\n", p, p - addr); print_tracking(s, p); } diff --git a/mm/zswap.c b/mm/zswap.c index 449914ea9919..162013952074 100644 --- a/mm/zswap.c +++ b/mm/zswap.c @@ -190,7 +190,6 @@ static struct shrinker *zswap_shrinker; * section for context. * pool - the zswap_pool the entry's data is in * handle - zpool allocation handle that stores the compressed page data - * value - value of the same-value filled pages which have same content * objcg - the obj_cgroup that the compressed memory is charged to * lru - handle to the pool's lru used to evict pages. */ |