Merge tag 'v6.1.5' into 6.1

This is the 6.1.5 stable release

Makefile

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 1
-SUBLEVEL = 4
+SUBLEVEL = 5
 EXTRAVERSION =
 NAME = Hurr durr I'ma ninja sloth
 

arch/arm/include/asm/thread_info.h

@@ -128,15 +128,16 @@ extern int vfp_restore_user_hwstate(struct user_vfp *,
 #define TIF_NEED_RESCHED	1	/* rescheduling necessary */
 #define TIF_NOTIFY_RESUME	2	/* callback before returning to user */
 #define TIF_UPROBE		3	/* breakpointed or singlestepping */
-#define TIF_SYSCALL_TRACE	4	/* syscall trace active */
-#define TIF_SYSCALL_AUDIT	5	/* syscall auditing active */
-#define TIF_SYSCALL_TRACEPOINT	6	/* syscall tracepoint instrumentation */
-#define TIF_SECCOMP		7	/* seccomp syscall filtering active */
-#define TIF_NOTIFY_SIGNAL	8	/* signal notifications exist */
+#define TIF_NOTIFY_SIGNAL	4	/* signal notifications exist */
 
 #define TIF_USING_IWMMXT	17
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
-#define TIF_RESTORE_SIGMASK	20
+#define TIF_RESTORE_SIGMASK	19
+#define TIF_SYSCALL_TRACE	20	/* syscall trace active */
+#define TIF_SYSCALL_AUDIT	21	/* syscall auditing active */
+#define TIF_SYSCALL_TRACEPOINT	22	/* syscall tracepoint instrumentation */
+#define TIF_SECCOMP		23	/* seccomp syscall filtering active */
+
 
 #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)

arch/mips/ralink/of.c

@@ -64,7 +64,7 @@ void __init plat_mem_setup(void)
 	dtb = get_fdt();
 	__dt_setup_arch(dtb);
 
-	if (!early_init_dt_scan_memory())
+	if (early_init_dt_scan_memory())
 		return;
 
 	if (soc_info.mem_detect)

arch/riscv/include/asm/uaccess.h

@@ -165,7 +165,7 @@ do {								\
 	might_fault();						\
 	access_ok(__p, sizeof(*__p)) ?		\
 		__get_user((x), __p) :				\
-		((x) = 0, -EFAULT);				\
+		((x) = (__force __typeof__(x))0, -EFAULT);	\
 })
 
 #define __put_user_asm(insn, x, ptr, err)			\

arch/riscv/kernel/probes/simulate-insn.h

@@ -31,9 +31,9 @@ __RISCV_INSN_FUNCS(fence,	0x7f, 0x0f);
 	} while (0)
 
 __RISCV_INSN_FUNCS(c_j,		0xe003, 0xa001);
-__RISCV_INSN_FUNCS(c_jr,	0xf007, 0x8002);
+__RISCV_INSN_FUNCS(c_jr,	0xf07f, 0x8002);
 __RISCV_INSN_FUNCS(c_jal,	0xe003, 0x2001);
-__RISCV_INSN_FUNCS(c_jalr,	0xf007, 0x9002);
+__RISCV_INSN_FUNCS(c_jalr,	0xf07f, 0x9002);
 __RISCV_INSN_FUNCS(c_beqz,	0xe003, 0xc001);
 __RISCV_INSN_FUNCS(c_bnez,	0xe003, 0xe001);
 __RISCV_INSN_FUNCS(c_ebreak,	0xffff, 0x9002);

arch/x86/kernel/cpu/bugs.c

@@ -1951,6 +1951,8 @@ static int ib_prctl_set(struct task_struct *task, unsigned long ctrl)
 		if (ctrl == PR_SPEC_FORCE_DISABLE)
 			task_set_spec_ib_force_disable(task);
 		task_update_spec_tif(task);
+		if (task == current)
+			indirect_branch_prediction_barrier();
 		break;
 	default:
 		return -ERANGE;

arch/x86/kernel/crash.c

@@ -401,10 +401,8 @@ int crash_load_segments(struct kimage *image)
 	kbuf.buf_align = ELF_CORE_HEADER_ALIGN;
 	kbuf.mem = KEXEC_BUF_MEM_UNKNOWN;
 	ret = kexec_add_buffer(&kbuf);
-	if (ret) {
-		vfree((void *)image->elf_headers);
+	if (ret)
 		return ret;
-	}
 	image->elf_load_addr = kbuf.mem;
 	pr_debug("Loaded ELF headers at 0x%lx bufsz=0x%lx memsz=0x%lx\n",
 		 image->elf_load_addr, kbuf.bufsz, kbuf.memsz);

block/blk-merge.c

@@ -300,6 +300,16 @@ static struct bio *bio_split_rw(struct bio *bio, struct queue_limits *lim,
 	*segs = nsegs;
 	return NULL;
 split:
+	/*
+	 * We can't sanely support splitting for a REQ_NOWAIT bio. End it
+	 * with EAGAIN if splitting is required and return an error pointer.
+	 */
+	if (bio->bi_opf & REQ_NOWAIT) {
+		bio->bi_status = BLK_STS_AGAIN;
+		bio_endio(bio);
+		return ERR_PTR(-EAGAIN);
+	}
+
 	*segs = nsegs;
 
 	/*

drivers/acpi/acpi_video.c

@@ -70,11 +70,7 @@ module_param(device_id_scheme, bool, 0444);
 static int only_lcd = -1;
 module_param(only_lcd, int, 0444);
 
-/*
- * Display probing is known to take up to 5 seconds, so delay the fallback
- * backlight registration by 5 seconds + 3 seconds for some extra margin.
- */
-static int register_backlight_delay = 8;
+static int register_backlight_delay;
 module_param(register_backlight_delay, int, 0444);
 MODULE_PARM_DESC(register_backlight_delay,
 	"Delay in seconds before doing fallback (non GPU driver triggered) "
@@ -2178,6 +2174,17 @@ static bool should_check_lcd_flag(void)
 	return false;
 }
 
+/*
+ * At least one graphics driver has reported that no LCD is connected
+ * via the native interface. cancel the registration for fallback acpi_video0.
+ * If another driver still deems this necessary, it can explicitly register it.
+ */
+void acpi_video_report_nolcd(void)
+{
+	cancel_delayed_work(&video_bus_register_backlight_work);
+}
+EXPORT_SYMBOL(acpi_video_report_nolcd);
+
 int acpi_video_register(void)
 {
 	int ret = 0;

drivers/block/ublk_drv.c

@@ -1992,6 +1992,9 @@ static int ublk_ctrl_uring_cmd(struct io_uring_cmd *cmd,
 	struct ublksrv_ctrl_cmd *header = (struct ublksrv_ctrl_cmd *)cmd->cmd;
 	int ret = -EINVAL;
 
+	if (issue_flags & IO_URING_F_NONBLOCK)
+		return -EAGAIN;
+
 	ublk_ctrl_cmd_dump(cmd);
 
 	if (!(issue_flags & IO_URING_F_SQE128))

drivers/block/virtio_blk.c

@@ -315,22 +315,35 @@ static void virtio_commit_rqs(struct blk_mq_hw_ctx *hctx)
 		virtqueue_notify(vq->vq);
 }
 
+static blk_status_t virtblk_fail_to_queue(struct request *req, int rc)
+{
+	virtblk_cleanup_cmd(req);
+	switch (rc) {
+	case -ENOSPC:
+		return BLK_STS_DEV_RESOURCE;
+	case -ENOMEM:
+		return BLK_STS_RESOURCE;
+	default:
+		return BLK_STS_IOERR;
+	}
+}
+
 static blk_status_t virtblk_prep_rq(struct blk_mq_hw_ctx *hctx,
 					struct virtio_blk *vblk,
 					struct request *req,
 					struct virtblk_req *vbr)
 {
 	blk_status_t status;
+	int num;
 
 	status = virtblk_setup_cmd(vblk->vdev, req, vbr);
 	if (unlikely(status))
 		return status;
 
-	vbr->sg_table.nents = virtblk_map_data(hctx, req, vbr);
-	if (unlikely(vbr->sg_table.nents < 0)) {
-		virtblk_cleanup_cmd(req);
-		return BLK_STS_RESOURCE;
-	}
+	num = virtblk_map_data(hctx, req, vbr);
+	if (unlikely(num < 0))
+		return virtblk_fail_to_queue(req, -ENOMEM);
+	vbr->sg_table.nents = num;
 
 	blk_mq_start_request(req);
 
@@ -364,15 +377,7 @@ static blk_status_t virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
 			blk_mq_stop_hw_queue(hctx);
 		spin_unlock_irqrestore(&vblk->vqs[qid].lock, flags);
 		virtblk_unmap_data(req, vbr);
-		virtblk_cleanup_cmd(req);
-		switch (err) {
-		case -ENOSPC:
-			return BLK_STS_DEV_RESOURCE;
-		case -ENOMEM:
-			return BLK_STS_RESOURCE;
-		default:
-			return BLK_STS_IOERR;
-		}
+		return virtblk_fail_to_queue(req, err);
 	}
 
 	if (bd->last && virtqueue_kick_prepare(vblk->vqs[qid].vq))

drivers/char/tpm/tpm-interface.c

@@ -412,7 +412,9 @@ int tpm_pm_suspend(struct device *dev)
 	}
 
 suspended:
-	return rc;
+	if (rc)
+		dev_err(dev, "Ignoring error %d while suspending\n", rc);
+	return 0;
 }
 EXPORT_SYMBOL_GPL(tpm_pm_suspend);
 

drivers/crypto/virtio/virtio_crypto_skcipher_algs.c

@@ -239,7 +239,8 @@ static int virtio_crypto_alg_skcipher_close_session(
 		pr_err("virtio_crypto: Close session failed status: %u, session_id: 0x%llx\n",
 			ctrl_status->status, destroy_session->session_id);
 
-		return -EINVAL;
+		err = -EINVAL;
+		goto out;
 	}
 
 	err = 0;

drivers/firmware/efi/efi.c

@@ -611,7 +611,7 @@ int __init efi_config_parse_tables(const efi_config_table_t *config_tables,
 
 		seed = early_memremap(efi_rng_seed, sizeof(*seed));
 		if (seed != NULL) {
-			size = min(seed->size, EFI_RANDOM_SEED_SIZE);
+			size = min_t(u32, seed->size, SZ_1K); // sanity check
 			early_memunmap(seed, sizeof(*seed));
 		} else {
 			pr_err("Could not map UEFI random seed!\n");
@@ -620,8 +620,8 @@ int __init efi_config_parse_tables(const efi_config_table_t *config_tables,
 			seed = early_memremap(efi_rng_seed,
 					      sizeof(*seed) + size);
 			if (seed != NULL) {
-				pr_notice("seeding entropy pool\n");
 				add_bootloader_randomness(seed->bits, size);
+				memzero_explicit(seed->bits, size);
 				early_memunmap(seed, sizeof(*seed) + size);
 			} else {
 				pr_err("Could not map UEFI random seed!\n");

drivers/firmware/efi/libstub/efistub.h

@@ -882,6 +882,8 @@ efi_status_t efi_get_random_bytes(unsigned long size, u8 *out);
 efi_status_t efi_random_alloc(unsigned long size, unsigned long align,
 			      unsigned long *addr, unsigned long random_seed);
 
+efi_status_t efi_random_get_seed(void);
+
 efi_status_t check_platform_features(void);
 
 void *get_efi_config_table(efi_guid_t guid);

drivers/firmware/efi/libstub/random.c

@@ -67,27 +67,43 @@ efi_status_t efi_random_get_seed(void)
 	efi_guid_t rng_proto = EFI_RNG_PROTOCOL_GUID;
 	efi_guid_t rng_algo_raw = EFI_RNG_ALGORITHM_RAW;
 	efi_guid_t rng_table_guid = LINUX_EFI_RANDOM_SEED_TABLE_GUID;
+	struct linux_efi_random_seed *prev_seed, *seed = NULL;
+	int prev_seed_size = 0, seed_size = EFI_RANDOM_SEED_SIZE;
 	efi_rng_protocol_t *rng = NULL;
-	struct linux_efi_random_seed *seed = NULL;
 	efi_status_t status;
 
 	status = efi_bs_call(locate_protocol, &rng_proto, NULL, (void **)&rng);
 	if (status != EFI_SUCCESS)
 		return status;
 
+	/*
+	 * Check whether a seed was provided by a prior boot stage. In that
+	 * case, instead of overwriting it, let's create a new buffer that can
+	 * hold both, and concatenate the existing and the new seeds.
+	 * Note that we should read the seed size with caution, in case the
+	 * table got corrupted in memory somehow.
+	 */
+	prev_seed = get_efi_config_table(LINUX_EFI_RANDOM_SEED_TABLE_GUID);
+	if (prev_seed && prev_seed->size <= 512U) {
+		prev_seed_size = prev_seed->size;
+		seed_size += prev_seed_size;
+	}
+
 	/*
 	 * Use EFI_ACPI_RECLAIM_MEMORY here so that it is guaranteed that the
 	 * allocation will survive a kexec reboot (although we refresh the seed
 	 * beforehand)
 	 */
 	status = efi_bs_call(allocate_pool, EFI_ACPI_RECLAIM_MEMORY,
-			     sizeof(*seed) + EFI_RANDOM_SEED_SIZE,
+			     struct_size(seed, bits, seed_size),
 			     (void **)&seed);
-	if (status != EFI_SUCCESS)
-		return status;
+	if (status != EFI_SUCCESS) {
+		efi_warn("Failed to allocate memory for RNG seed.\n");
+		goto err_warn;
+	}
 
 	status = efi_call_proto(rng, get_rng, &rng_algo_raw,
-				 EFI_RANDOM_SEED_SIZE, seed->bits);
+				EFI_RANDOM_SEED_SIZE, seed->bits);
 
 	if (status == EFI_UNSUPPORTED)
 		/*
@@ -100,14 +116,28 @@ efi_status_t efi_random_get_seed(void)
 	if (status != EFI_SUCCESS)
 		goto err_freepool;
 
-	seed->size = EFI_RANDOM_SEED_SIZE;
+	seed->size = seed_size;
+	if (prev_seed_size)
+		memcpy(seed->bits + EFI_RANDOM_SEED_SIZE, prev_seed->bits,
+		       prev_seed_size);
+
 	status = efi_bs_call(install_configuration_table, &rng_table_guid, seed);
 	if (status != EFI_SUCCESS)
 		goto err_freepool;
 
+	if (prev_seed_size) {
+		/* wipe and free the old seed if we managed to install the new one */
+		memzero_explicit(prev_seed->bits, prev_seed_size);
+		efi_bs_call(free_pool, prev_seed);
+	}
 	return EFI_SUCCESS;
 
 err_freepool:
+	memzero_explicit(seed, struct_size(seed, bits, seed_size));
 	efi_bs_call(free_pool, seed);
+	efi_warn("Failed to obtain seed from EFI_RNG_PROTOCOL\n");
+err_warn:
+	if (prev_seed)
+		efi_warn("Retaining bootloader-supplied seed only");
 	return status;
 }

drivers/gpio/gpio-pca953x.c

@@ -473,6 +473,9 @@ static u8 pcal6534_recalc_addr(struct pca953x_chip *chip, int reg, int off)
 	case PCAL6524_DEBOUNCE:
 		pinctrl = ((reg & PCAL_PINCTRL_MASK) >> 1) + 0x1c;
 		break;
+	default:
+		pinctrl = 0;
+		break;
 	}
 
 	return pinctrl + addr + (off / BANK_SZ);

drivers/gpio/gpio-sifive.c

@@ -215,6 +215,7 @@ static int sifive_gpio_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 	parent = irq_find_host(irq_parent);
+	of_node_put(irq_parent);
 	if (!parent) {
 		dev_err(dev, "no IRQ parent domain\n");
 		return -ENODEV;

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -196,6 +196,7 @@ extern int amdgpu_emu_mode;
 extern uint amdgpu_smu_memory_pool_size;
 extern int amdgpu_smu_pptable_id;
 extern uint amdgpu_dc_feature_mask;
+extern uint amdgpu_freesync_vid_mode;
 extern uint amdgpu_dc_debug_mask;
 extern uint amdgpu_dc_visual_confirm;
 extern uint amdgpu_dm_abm_level;

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

@@ -265,8 +265,10 @@ int amdgpu_amdkfd_get_pcie_bandwidth_mbytes(struct amdgpu_device *adev, bool is_
 	(&((struct amdgpu_fpriv *)					\
 		((struct drm_file *)(drm_priv))->driver_priv)->vm)
 
+int amdgpu_amdkfd_gpuvm_set_vm_pasid(struct amdgpu_device *adev,
+				     struct file *filp, u32 pasid);
 int amdgpu_amdkfd_gpuvm_acquire_process_vm(struct amdgpu_device *adev,
-					struct file *filp, u32 pasid,
+					struct file *filp,
 					void **process_info,
 					struct dma_fence **ef);
 void amdgpu_amdkfd_gpuvm_release_process_vm(struct amdgpu_device *adev,