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2017-11-24crypto: af_alg - remove locking in async callbackStephan Mueller
The code paths protected by the socket-lock do not use or modify the socket in a non-atomic fashion. The actions pertaining the socket do not even need to be handled as an atomic operation. Thus, the socket-lock can be safely ignored. This fixes a bug regarding scheduling in atomic as the callback function may be invoked in interrupt context. In addition, the sock_hold is moved before the AIO encrypt/decrypt operation to ensure that the socket is always present. This avoids a tiny race window where the socket is unprotected and yet used by the AIO operation. Finally, the release of resources for a crypto operation is moved into a common function of af_alg_free_resources. Cc: <stable@vger.kernel.org> Fixes: e870456d8e7c8 ("crypto: algif_skcipher - overhaul memory management") Fixes: d887c52d6ae43 ("crypto: algif_aead - overhaul memory management") Reported-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Stephan Mueller <smueller@chronox.de> Tested-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-24crypto: algif_aead - skip SGL entries with NULL pageStephan Mueller
The TX SGL may contain SGL entries that are assigned a NULL page. This may happen if a multi-stage AIO operation is performed where the data for each stage is pointed to by one SGL entry. Upon completion of that stage, af_alg_pull_tsgl will assign NULL to the SGL entry. The NULL cipher used to copy the AAD from TX SGL to the destination buffer, however, cannot handle the case where the SGL starts with an SGL entry having a NULL page. Thus, the code needs to advance the start pointer into the SGL to the first non-NULL entry. This fixes a crash visible on Intel x86 32 bit using the libkcapi test suite. Cc: <stable@vger.kernel.org> Fixes: 72548b093ee38 ("crypto: algif_aead - copy AAD from src to dst") Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10lib/mpi: call cond_resched() from mpi_powm() loopEric Biggers
On a non-preemptible kernel, if KEYCTL_DH_COMPUTE is called with the largest permitted inputs (16384 bits), the kernel spends 10+ seconds doing modular exponentiation in mpi_powm() without rescheduling. If all threads do it, it locks up the system. Moreover, it can cause rcu_sched-stall warnings. Notwithstanding the insanity of doing this calculation in kernel mode rather than in userspace, fix it by calling cond_resched() as each bit from the exponent is processed. It's still noninterruptible, but at least it's preemptible now. Do the cond_resched() once per bit rather than once per MPI limb because each limb might still easily take 100+ milliseconds on slow CPUs. Cc: <stable@vger.kernel.org> # v4.12+ Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: stm32/hash - Fix return issue on updateLionel Debieve
When data append reached the threshold for processing, we must inform that processing is on going to wait before managing the next request. Signed-off-by: Lionel Debieve <lionel.debieve@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: dh - Remove pointless checks for NULL 'p' and 'g'Eric Biggers
Neither 'p' nor 'g' can be NULL, as they were unpacked using crypto_dh_decode_key(). And it makes no sense for them to be optional. So remove the NULL checks that were copy-and-pasted into both modules. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: qat - Clean up error handling in qat_dh_set_secret()Eric Biggers
Update the error handling in qat_dh_set_secret() to mirror dh_set_secret(). The new version is less error-prone because freeing memory and setting the pointers to NULL is now only done in one place. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: dh - Don't permit 'key' or 'g' size longer than 'p'Eric Biggers
The "qat-dh" DH implementation assumes that 'key' and 'g' can be copied into a buffer with size 'p_size'. However it was never checked that that was actually the case, which most likely allowed users to cause a buffer underflow via KEYCTL_DH_COMPUTE. Fix this by updating crypto_dh_decode_key() to verify this precondition for all DH implementations. Fixes: c9839143ebbf ("crypto: qat - Add DH support") Cc: <stable@vger.kernel.org> # v4.8+ Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: dh - Don't permit 'p' to be 0Eric Biggers
If 'p' is 0 for the software Diffie-Hellman implementation, then dh_max_size() returns 0. In the case of KEYCTL_DH_COMPUTE, this causes ZERO_SIZE_PTR to be passed to sg_init_one(), which with CONFIG_DEBUG_SG=y triggers the 'BUG_ON(!virt_addr_valid(buf));' in sg_set_buf(). Fix this by making crypto_dh_decode_key() reject 0 for 'p'. p=0 makes no sense for any DH implementation because 'p' is supposed to be a prime number. Moreover, 'mod 0' is not mathematically defined. Bug report: kernel BUG at ./include/linux/scatterlist.h:140! invalid opcode: 0000 [#1] SMP KASAN CPU: 0 PID: 27112 Comm: syz-executor2 Not tainted 4.14.0-rc7-00010-gf5dbb5d0ce32-dirty #7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.3-20171021_125229-anatol 04/01/2014 task: ffff88006caac0c0 task.stack: ffff88006c7c8000 RIP: 0010:sg_set_buf include/linux/scatterlist.h:140 [inline] RIP: 0010:sg_init_one+0x1b3/0x240 lib/scatterlist.c:156 RSP: 0018:ffff88006c7cfb08 EFLAGS: 00010216 RAX: 0000000000010000 RBX: ffff88006c7cfe30 RCX: 00000000000064ee RDX: ffffffff81cf64c3 RSI: ffffc90000d72000 RDI: ffffffff92e937e0 RBP: ffff88006c7cfb30 R08: ffffed000d8f9fab R09: ffff88006c7cfd30 R10: 0000000000000005 R11: ffffed000d8f9faa R12: ffff88006c7cfd30 R13: 0000000000000000 R14: 0000000000000010 R15: ffff88006c7cfc50 FS: 00007fce190fa700(0000) GS:ffff88003ea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffc6b33db8 CR3: 000000003cf64000 CR4: 00000000000006f0 Call Trace: __keyctl_dh_compute+0xa95/0x19b0 security/keys/dh.c:360 keyctl_dh_compute+0xac/0x100 security/keys/dh.c:434 SYSC_keyctl security/keys/keyctl.c:1745 [inline] SyS_keyctl+0x72/0x2c0 security/keys/keyctl.c:1641 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4585c9 RSP: 002b:00007fce190f9bd8 EFLAGS: 00000216 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 0000000000738020 RCX: 00000000004585c9 RDX: 000000002000d000 RSI: 0000000020000ff4 RDI: 0000000000000017 RBP: 0000000000000046 R08: 0000000020008000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 00007fff6e610cde R13: 00007fff6e610cdf R14: 00007fce190fa700 R15: 0000000000000000 Code: 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 33 5b 45 89 6c 24 14 41 5c 41 5d 41 5e 41 5f 5d c3 e8 fd 8f 68 ff <0f> 0b e8 f6 8f 68 ff 0f 0b e8 ef 8f 68 ff 0f 0b e8 e8 8f 68 ff 20 RIP: sg_set_buf include/linux/scatterlist.h:140 [inline] RSP: ffff88006c7cfb08 RIP: sg_init_one+0x1b3/0x240 lib/scatterlist.c:156 RSP: ffff88006c7cfb08 Fixes: 802c7f1c84e4 ("crypto: dh - Add DH software implementation") Cc: <stable@vger.kernel.org> # v4.8+ Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10crypto: dh - Fix double free of ctx->pEric Biggers
When setting the secret with the software Diffie-Hellman implementation, if allocating 'g' failed (e.g. if it was longer than MAX_EXTERN_MPI_BITS), then 'p' was freed twice: once immediately, and once later when the crypto_kpp tfm was destroyed. Fix it by using dh_free_ctx() (renamed to dh_clear_ctx()) in the error paths, as that correctly sets the pointers to NULL. KASAN report: MPI: mpi too large (32760 bits) ================================================================== BUG: KASAN: use-after-free in mpi_free+0x131/0x170 Read of size 4 at addr ffff88006c7cdf90 by task reproduce_doubl/367 CPU: 1 PID: 367 Comm: reproduce_doubl Not tainted 4.14.0-rc7-00040-g05298abde6fe #7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: dump_stack+0xb3/0x10b ? mpi_free+0x131/0x170 print_address_description+0x79/0x2a0 ? mpi_free+0x131/0x170 kasan_report+0x236/0x340 ? akcipher_register_instance+0x90/0x90 __asan_report_load4_noabort+0x14/0x20 mpi_free+0x131/0x170 ? akcipher_register_instance+0x90/0x90 dh_exit_tfm+0x3d/0x140 crypto_kpp_exit_tfm+0x52/0x70 crypto_destroy_tfm+0xb3/0x250 __keyctl_dh_compute+0x640/0xe90 ? kasan_slab_free+0x12f/0x180 ? dh_data_from_key+0x240/0x240 ? key_create_or_update+0x1ee/0xb20 ? key_instantiate_and_link+0x440/0x440 ? lock_contended+0xee0/0xee0 ? kfree+0xcf/0x210 ? SyS_add_key+0x268/0x340 keyctl_dh_compute+0xb3/0xf1 ? __keyctl_dh_compute+0xe90/0xe90 ? SyS_add_key+0x26d/0x340 ? entry_SYSCALL_64_fastpath+0x5/0xbe ? trace_hardirqs_on_caller+0x3f4/0x560 SyS_keyctl+0x72/0x2c0 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x43ccf9 RSP: 002b:00007ffeeec96158 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 000000000248b9b9 RCX: 000000000043ccf9 RDX: 00007ffeeec96170 RSI: 00007ffeeec96160 RDI: 0000000000000017 RBP: 0000000000000046 R08: 0000000000000000 R09: 0248b9b9143dc936 R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000409670 R14: 0000000000409700 R15: 0000000000000000 Allocated by task 367: save_stack_trace+0x16/0x20 kasan_kmalloc+0xeb/0x180 kmem_cache_alloc_trace+0x114/0x300 mpi_alloc+0x4b/0x230 mpi_read_raw_data+0xbe/0x360 dh_set_secret+0x1dc/0x460 __keyctl_dh_compute+0x623/0xe90 keyctl_dh_compute+0xb3/0xf1 SyS_keyctl+0x72/0x2c0 entry_SYSCALL_64_fastpath+0x1f/0xbe Freed by task 367: save_stack_trace+0x16/0x20 kasan_slab_free+0xab/0x180 kfree+0xb5/0x210 mpi_free+0xcb/0x170 dh_set_secret+0x2d7/0x460 __keyctl_dh_compute+0x623/0xe90 keyctl_dh_compute+0xb3/0xf1 SyS_keyctl+0x72/0x2c0 entry_SYSCALL_64_fastpath+0x1f/0xbe Fixes: 802c7f1c84e4 ("crypto: dh - Add DH software implementation") Cc: <stable@vger.kernel.org> # v4.8+ Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10hwrng: iproc-rng200 - Add support for BCM7278Florian Fainelli
BCM7278 features a RNG200 hardware random number generator block, add support for this chip by matching the chip-specific compatible string and extending the Kconfig dependencies to allow building on ARCH_BRCMSTB (base platform for 7278). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-10dt-bindings: rng: Document BCM7278 RNG200 compatibleFlorian Fainelli
BCM7278 includes a RGN200 hardware random number generator, document the compatible string for that version of the IP. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06crypto: chcr - Replace _manual_ swap with swap macroGustavo A. R. Silva
Make use of the swap macro and remove unnecessary variable temp. This makes the code easier to read and maintain. This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06crypto: marvell - Add a NULL entry at the end of mv_cesa_plat_id_table[]Boris BREZILLON
struct platform_device_id should be NULL terminated to let the core detect where the last entry is. Fixes: 07c50a8be41a ("crypto: marvell - Add a platform_device_id table") Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resumeJim Quigley
The patch for commit: 5c06273401f2eb7b290cadbae18ee00f8f65e893 Author: Amit Shah <amit.shah@redhat.com> Date: Sun Jul 27 07:34:01 2014 +0930 virtio: rng: delay hwrng_register() till driver is ready moved the call to hwrng_register() out of the probe routine into the scan routine. We need to call hwrng_register() after a suspend/restore cycle to re-register the device, but the scan function is not invoked for the restore. Add the call to hwrng_register() to virtio_restore(). Reviewed-by: Liam Merwick <Liam.Merwick@oracle.com> Signed-off-by: Jim Quigley <Jim.Quigley@oracle.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06crypto: atmel - remove empty functionsTudor-Dan Ambarus
Pointer members of an object with static storage duration, if not explicitly initialized, will be initialized to a NULL pointer. The crypto API checks if these pointers are not NULL before using them, therefore we can safely remove these empty functions. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06crypto: ecdh - remove empty exit()Tudor-Dan Ambarus
Pointer members of an object with static storage duration, if not explicitly initialized, will be initialized to a NULL pointer. The crypto API checks if this pointer is not NULL before using it, we are safe to remove the function. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06MAINTAINERS: update maintainer for qatSalvatore Benedetto
Removing myself as I'm not longer following QAT development. Signed-off-by: Salvatore Benedetto <salvatore.benedetto@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06crypto: caam - remove unused param of ctx_map_to_sec4_sg()Horia Geantă
ctx_map_to_sec4_sg() function, added in commit 045e36780f115 ("crypto: caam - ahash hmac support") has never used the "desc" parameter, so let's drop it. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-06crypto: caam - remove unneeded edesc zeroizationHoria Geantă
Extended descriptor allocation has been changed by commit dde20ae9d6383 ("crypto: caam - Change kmalloc to kzalloc to avoid residual data") to provide zeroized memory, meaning we no longer have to sanitize its members - edesc->src_nents and edesc->dst_dma. Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: atmel-aes - Reset the controller before each useRomain Izard
When using the rfc4543(gcm(aes))) mode, the registers of the hardware engine are not empty after use. If the engine is not reset before its next use, the following results will be invalid. Always reset the hardware engine. Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: atmel-aes - properly set IV after {en,de}cryptRomain Izard
Certain cipher modes like CTS expect the IV (req->info) of ablkcipher_request (or equivalently req->iv of skcipher_request) to contain the last ciphertext block when the {en,de}crypt operation is done. Fix this issue for the Atmel AES hardware engine. The tcrypt test case for cts(cbc(aes)) is now correctly passed. In the case of in-place decryption, copy the ciphertext in an intermediate buffer before decryption. Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03hwrng: core - Reset user selected rng by writing "" to rng_currentPrasannaKumar Muralidharan
User is able to select a chosen rng by writing its name to rng_current but there is no way to reset it without unbinding the rng. Let user write "" to rng_current and delesect the chosen rng. Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com> reviewed-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: s5p-sss - Add HASH support for ExynosKamil Konieczny
Add support for MD5, SHA1, SHA256 hash algorithms for Exynos HW. It uses the crypto framework asynchronous hash api. It is based on omap-sham.c driver. S5P has some HW differencies and is not implemented. Modifications in s5p-sss: - Add hash supporting structures and functions. - Modify irq handler to handle both aes and hash signals. - Resize resource end in probe if EXYNOS_HASH is enabled in Kconfig. - Add new copyright line and new author. - Tested on Odroid-U3 with Exynos 4412 CPU, kernel 4.13-rc6 with crypto run-time self test testmgr and with tcrypt module with: modprobe tcrypt sec=1 mode=N where N=402, 403, 404 (MD5, SHA1, SHA256). Modifications in drivers/crypto/Kconfig: - Add new CRYPTO_DEV_EXYNOS_HASH, depend on !EXYNOS_RNG and CRYPTO_DEV_S5P - Select sw algorithms MD5, SHA1 and SHA256 in EXYNOS_HASH as they are needed for fallback. Acked-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: s5p-sss - Change spaces to tabsKamil Konieczny
Change #define lines to use tabs consistently. Acked-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Kamil Konieczny <k.konieczny@partner.samsung.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: drivers - Convert timers to use timer_setup()Kees Cook
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Lars Persson <lars.persson@axis.com> Cc: Niklas Cassel <niklas.cassel@axis.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jamie Iles <jamie@jamieiles.com> Cc: linux-arm-kernel@axis.com Cc: linux-crypto@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Jamie Iles <jamie@jamieiles.com> Acked-by: Lars Persson <lars.persson@axis.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: caam/qi - abort algorithm setup on DPAA2 partsHoria Geantă
caam/qi frontend (i.e. caamalg_qi) mustn't be used in case it runs on a DPAA2 part (this could happen when using a multiplatform kernel). Fixes: 297b9cebd2fc ("crypto: caam/jr - add support for DPAA2 parts") Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: caam - fix incorrect defineRadu Alexe
Fixes: 3ebfa92f49a6 ("crypto: caam - Add new macros for building extended SEC descriptors (> 64 words)") Signed-off-by: Radu Alexe <radu.alexe@nxp.com> Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: atmel - remove useless irq initTudor-Dan Ambarus
irq would be set to -1 and then unused, if we failed to get IORESOURCE_MEM. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: atmel - return appropriate error codeTudor-Dan Ambarus
Return -ENODEV when dma_request_slave_channel_compat() fails. Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: doc - adapt api sample to use async. op waitGilad Ben-Yossef
The code sample is waiting for an async. crypto op completion. Adapt sample to use the new generic infrastructure to do the same. This also fixes a possible data coruption bug created by the use of wait_for_completion_interruptible() without dealing correctly with an interrupt aborting the wait prior to the async op finishing. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: mediatek - move to generic async completionGilad Ben-Yossef
The mediatek driver starts several async crypto ops and waits for their completions. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Acked-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: qce - move to generic async completionGilad Ben-Yossef
The qce driver starts several async crypto ops and waits for their completions. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: talitos - move to generic async completionGilad Ben-Yossef
The talitos driver starts several async crypto ops and waits for their completions. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Tested-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: tcrypt - move to generic async completionGilad Ben-Yossef
tcrypt starts several async crypto ops and waits for their completions. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03ima: move to generic async completionGilad Ben-Yossef
ima starts several async crypto ops and waits for their completions. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03cifs: move to generic async completionGilad Ben-Yossef
cifs starts an async. crypto op and waits for their completion. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03dm: move dm-verity to generic async completionGilad Ben-Yossef
dm-verity is starting async. crypto ops and waiting for them to complete. Move it over to generic code doing the same. This also avoids a future potential data coruption bug created by the use of wait_for_completion_interruptible() without dealing correctly with an interrupt aborting the wait prior to the async op finishing, should this code ever move to a context where signals are not masked. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> CC: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03fscrypt: move to generic async completionGilad Ben-Yossef
fscrypt starts several async. crypto ops and waiting for them to complete. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: testmgr - move to generic async completionGilad Ben-Yossef
testmgr is starting async. crypto ops and waiting for them to complete. Move it over to generic code doing the same. This also provides a test of the generic crypto async. wait code. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: gcm - move to generic async completionGilad Ben-Yossef
gcm is starting an async. crypto op and waiting for it complete. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: drbg - move to generic async completionGilad Ben-Yossef
DRBG is starting an async. crypto op and waiting for it complete. Move it over to generic code doing the same. The code now also passes CRYPTO_TFM_REQ_MAY_SLEEP flag indicating crypto request memory allocation may use GFP_KERNEL which should be perfectly fine as the code is obviously sleeping for the completion of the request any way. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: move pub key to generic async completionGilad Ben-Yossef
public_key_verify_signature() is starting an async crypto op and waiting for it to complete. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: algif - move to generic async completionGilad Ben-Yossef
algif starts several async crypto ops and waits for their completion. Move it over to generic code doing the same. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: introduce crypto wait for async opGilad Ben-Yossef
Invoking a possibly async. crypto op and waiting for completion while correctly handling backlog processing is a common task in the crypto API implementation and outside users of it. This patch adds a generic implementation for doing so in preparation for using it across the board instead of hand rolled versions. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> CC: Eric Biggers <ebiggers3@gmail.com> CC: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: marvell/cesa - remove redundant backlog checks on EBUSYGilad Ben-Yossef
Now that -EBUSY return code only indicates backlog queueing we can safely remove the now redundant check for the CRYPTO_TFM_REQ_MAY_BACKLOG flag when -EBUSY is returned. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: remove redundant backlog checks on EBUSYGilad Ben-Yossef
Now that -EBUSY return code only indicates backlog queueing we can safely remove the now redundant check for the CRYPTO_TFM_REQ_MAY_BACKLOG flag when -EBUSY is returned. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03net: use -ENOSPC for transient busy indicationGilad Ben-Yossef
Replace -EBUSY with -ENOSPC when handling transient busy indication in the absence of backlog. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: ccp - use -ENOSPC for transient busy indicationGilad Ben-Yossef
Replace -EBUSY with -ENOSPC when reporting transient busy indication in the absence of backlog. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Reviewed-by: Gary R Hook <gary.hook@amd.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03crypto: change transient busy return code to -ENOSPCGilad Ben-Yossef
The crypto API was using the -EBUSY return value to indicate both a hard failure to submit a crypto operation into a transformation provider when the latter was busy and the backlog mechanism was not enabled as well as a notification that the operation was queued into the backlog when the backlog mechanism was enabled. Having the same return code indicate two very different conditions depending on a flag is both error prone and requires extra runtime check like the following to discern between the cases: if (err == -EINPROGRESS || (err == -EBUSY && (ahash_request_flags(req) & CRYPTO_TFM_REQ_MAY_BACKLOG))) This patch changes the return code used to indicate a crypto op failed due to the transformation provider being transiently busy to -ENOSPC. Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-11-03hwrng: xgene - Convert timers to use timer_setup()Kees Cook
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Matt Mackall <mpm@selenic.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: linux-crypto@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>