linuxkm/linuxkm_wc_port.h: only use kvrealloc() on kernel >=6.11 -- the version in 5.15-6.10 is incompatible (oldsize arg). also, restore use of kvmalloc on 4.12+, but with XREALLOC undefined, suitable for cryptonly modules; add #include <linux/sched.h> even on __PIE__ objects to make cond_sched() available;
wolfcrypt/src/asn.c: harmonize gate around definitions of BEGIN_DSA_PRIV and END_DSA_PRIV;
wolfcrypt/src/asn.c: in EccSpecifiedECDomainDecode(), work around "const char[]" types in WOLFSSL_ECC_CURVE_STATIC struct ecc_set_type on FIPS <6;
wolfcrypt/src/asn.c, wolfcrypt/src/wc_xmss.c, wolfssl/wolfcrypt/wc_lms.h: add comments to new WOLFSSL_NAMES_STATIC slots explaining where the size comes from.
linuxkm/Kbuild: add linker script flag, containerize several more previously-missed ELF sections, and add a test verifying no sections were missed;
linuxkm/linuxkm_memory.c: remove obsolete lkm_realloc() shim and unneeded my__show_free_areas() wrapper;
linuxkm/linuxkm_wc_port.h: add new mapping from realloc() to native kvrealloc(), and gate out a slew of headers when __PIE__ to avoid polluting wolfCrypt objects with various unneeded header-implemented functions with associated awkward symbols references;
linuxkm/lkcapi_glue.c: harmonize gate for REGISTER_ALG_OPTIONAL();
linuxkm/module_hooks.c: add "ERROR:" prefixes on pr_err()s; add wc_RunAllCast_fips() at shutdown to send confidence verification to the kernel log; remove section bounds checks now that layout is unreliable;
wolfssl/wolfcrypt/settings.h: for WOLFSSL_LINUXKM && HAVE_LINUXKM_PIE_SUPPORT, #define WOLFSSL_ECC_CURVE_STATIC and WOLFSSL_NAMES_STATIC;
wolfssl/wolfcrypt/types.h: refactor the typedef for wcchar from a pointer to a char[];
wolfcrypt/src/wc_xmss.c and wolfssl/wolfcrypt/wc_lms.h: add WOLFSSL_NAMES_STATIC code paths for struct wc_XmssString and struct wc_LmsParamsMap;
wolfcrypt/src/asn.c: add WOLFSSL_NAMES_STATIC code paths for struct CertNameData, and add static attribute to a slew of wcchars not used or declared outside asn.c.
wolfssl/wolfcrypt/settings.h: if WOLFSSL_LINUXKM && LINUXKM_LKCAPI_REGISTER && WORD64_AVAILABLE, set default WC_RESEED_INTERVAL to max allowed (2^48);
linuxkm/lkcapi_sha_glue.c: handle NO_LINUXKM_DRBG_GET_RANDOM_BYTES, for build-time override control of LINUXKM_DRBG_GET_RANDOM_BYTES, and handle WOLFSSL_LINUXKM_USE_GET_RANDOM_USER_KRETPROBE, for separate opt-in control of the buggy wc_get_random_bytes_user_kretprobe_enter().
* implement interception of _get_random_bytes() and get_random_bytes_user() (implicitly intercepts /dev/random and /dev/urandom):
* get_crypto_default_rng()
* get_default_drbg_ctx()
* wc__get_random_bytes()
* wc_get_random_bytes_user()
* wc_extract_crng_user()
* wc_mix_pool_bytes()
* wc_crng_reseed()
* wc_get_random_bytes_by_kprobe()
* wc_get_random_bytes_user_kretprobe_enter()
* wc_get_random_bytes_user_kretprobe_exit()
* add LINUXKM_DRBG_GET_RANDOM_BYTES sections to wc_linuxkm_drbg_startup() and wc_linuxkm_drbg_cleanup()
* add linuxkm/patches/*/WOLFSSL_LINUXKM_HAVE_GET_RANDOM_CALLBACKS-*.patch, initially for versions:
* 5.10.17
* 5.10.236
* 5.15
* 5.17
* 6.1.73
* 6.12
* 6.15
* remove "*.patch" from .gitignore.
* add linuxkm/patches/regen-patches.sh.
* in wc_linuxkm_drbg_ctx_clear(), check lock count before freeing.
* in get_drbg() and put_drbg(), use migrate_disable(), not DISABLE_VECTOR_REGISTERS().
* in wc_linuxkm_drbg_generate(), explicitly DISABLE_VECTOR_REGISTERS() for the crypto_default_rng.
* in wc_linuxkm_drbg_generate(), add DRBG reinitialization code to handle RNG_FAILURE_E. This handles the situation where a DRBG was instantiated in a vector-ops-allowed context, caching a vectorized SHA256 ethod, but later used in a no-vector-ops-allowed context.
* in wc_linuxkm_drbg_seed(), add DISABLE_VECTOR_REGISTERS() wrapper around wc_RNG_DRBG_Reseed() for crypto_default_rng.
linuxkm/x86_vector_register_glue.c:
* add crash recovery logic to wc_linuxkm_fpu_state_assoc_unlikely()
* in wc_linuxkm_fpu_state_assoc(), when wc_linuxkm_fpu_states is null, don't call wc_linuxkm_fpu_state_assoc_unlikely() if !assume_fpu_began.
* in can_save_vector_registers_x86(), save_vector_registers_x86(), and restore_vector_registers_x86(), check for hard interrupt context first, to return early failure if current->pid is unusable.
* in save_vector_registers_x86(), tweak logic around WC_FPU_INHIBITED_FLAG, adding local_bh_disable()...local_bh_enable() to provide for safe recursion.
wolfcrypt/src/random.c: optimization: in Hash_df(), for WOLFSSL_LINUXKM, don't put digest[WC_SHA256_DIGEST_SIZE] in the heap, keep it on the stack.
wolfssl/wolfcrypt/types.h: add WOLFSSL_NO_ASM no-op definitions for DISABLE_VECTOR_REGISTERS() and REENABLE_VECTOR_REGISTERS().
configure.ac:
* move --enable-linuxkm and --enable-linuxkm-defaults initial detection early, so that HMAC_COPY_DEFAULT picks it up.
* add ENABLED_ENTROPY_MEMUSE_DEFAULT, and enable it by default when ENABLED_LINUXKM_DEFAULTS.
* update linuxkm-lkcapi-register help message.
linuxkm/linuxkm_wc_port.h:
* add my_kallsyms_lookup_name().
* add preempt_count, _raw_spin_lock_irqsave, _raw_spin_trylock, _raw_spin_unlock_irqrestore, and _cond_resched, to wolfssl_linuxkm_pie_redirect_table, and add spin_unlock_irqrestore() macro to mask native inline.
* move linuxkm mutex wrappers from wolfcrypt/src/wc_port.c to linuxkm_wc_port.h, make them inlines, and add new default spinlock-based implementation, with old method now gated on WOLFSSL_LINUXKM_USE_MUTEXES.
* change malloc() and realloc() wrappers from GFP_KERNEL to GFP_ATOMIC.
linuxkm/lkcapi_glue.c: make misc.h/misc.c inclusion unconditional, and trim now-redundant inclusions out of lkcapi_dh_glue.c and lkcapi_ecdh_glue.c.
linuxkm/x86_vector_register_glue.c: implement support for WC_FPU_INHIBITED_FLAG, and an `int inhibit_p` argument to save_vector_registers_x86();
wolfcrypt/src/random.c: implement linuxkm support for RDSEED and HAVE_ENTROPY_MEMUSE;
wolfssl/wolfcrypt/error-crypt.h and wolfcrypt/src/error.c: add WC_ACCEL_INHIBIT_E "Crypto acceleration is currently inhibited";
linuxkm/module_hooks.c and linuxkm/x86_vector_register_glue.c: remove broken and bit-rotten WOLFSSL_COMMERCIAL_LICENSE and LINUXKM_FPU_STATES_FOLLOW_THREADS code paths.
Get the EVP layer working with the wolfSSL HMAC implementation when
WOLFSSL_HMAC_COPY_HASH is defined.
This define hashes the ipad and opad into temporary hashes and copies
the required hash into the working hash when needed. Uses more memory
but is faster when starting a new hash with the same key.
