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-rw-r--r--arch/um/drivers/ubd_kern.c8
-rw-r--r--arch/um/drivers/virt-pci.c7
-rw-r--r--arch/um/include/asm/archrandom.h25
-rw-r--r--arch/um/include/asm/page.h4
-rw-r--r--arch/um/include/shared/mem.h4
-rw-r--r--arch/um/include/shared/os.h7
-rw-r--r--arch/um/kernel/um_arch.c12
-rw-r--r--arch/um/os-Linux/skas/process.c6
-rw-r--r--arch/um/os-Linux/util.c6
9 files changed, 67 insertions, 12 deletions
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index c4344b67628d..eb2d2f0f0bcc 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -925,7 +925,7 @@ static int ubd_add(int n, char **error_out)
return 0;
out_cleanup_disk:
- blk_cleanup_disk(disk);
+ put_disk(disk);
out_cleanup_tags:
blk_mq_free_tag_set(&ubd_dev->tag_set);
out:
@@ -1032,7 +1032,7 @@ static int ubd_remove(int n, char **error_out)
ubd_gendisk[n] = NULL;
if(disk != NULL){
del_gendisk(disk);
- blk_cleanup_disk(disk);
+ put_disk(disk);
}
err = 0;
@@ -1262,7 +1262,7 @@ static void ubd_map_req(struct ubd *dev, struct io_thread_req *io_req,
struct req_iterator iter;
int i = 0;
unsigned long byte_offset = io_req->offset;
- int op = req_op(req);
+ enum req_op op = req_op(req);
if (op == REQ_OP_WRITE_ZEROES || op == REQ_OP_DISCARD) {
io_req->io_desc[0].buffer = NULL;
@@ -1325,7 +1325,7 @@ static int ubd_submit_request(struct ubd *dev, struct request *req)
int segs = 0;
struct io_thread_req *io_req;
int ret;
- int op = req_op(req);
+ enum req_op op = req_op(req);
if (op == REQ_OP_FLUSH)
segs = 0;
diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c
index 5c092a9153ea..027847023184 100644
--- a/arch/um/drivers/virt-pci.c
+++ b/arch/um/drivers/virt-pci.c
@@ -544,6 +544,8 @@ static int um_pci_init_vqs(struct um_pci_device *dev)
dev->cmd_vq = vqs[0];
dev->irq_vq = vqs[1];
+ virtio_device_ready(dev->vdev);
+
for (i = 0; i < NUM_IRQ_MSGS; i++) {
void *msg = kzalloc(MAX_IRQ_MSG_SIZE, GFP_KERNEL);
@@ -587,7 +589,7 @@ static int um_pci_virtio_probe(struct virtio_device *vdev)
dev->irq = irq_alloc_desc(numa_node_id());
if (dev->irq < 0) {
err = dev->irq;
- goto error;
+ goto err_reset;
}
um_pci_devices[free].dev = dev;
vdev->priv = dev;
@@ -604,6 +606,9 @@ static int um_pci_virtio_probe(struct virtio_device *vdev)
um_pci_rescan();
return 0;
+err_reset:
+ virtio_reset_device(vdev);
+ vdev->config->del_vqs(vdev);
error:
mutex_unlock(&um_pci_mtx);
kfree(dev);
diff --git a/arch/um/include/asm/archrandom.h b/arch/um/include/asm/archrandom.h
new file mode 100644
index 000000000000..24e16c979c51
--- /dev/null
+++ b/arch/um/include/asm/archrandom.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_UM_ARCHRANDOM_H__
+#define __ASM_UM_ARCHRANDOM_H__
+
+#include <linux/types.h>
+
+/* This is from <os.h>, but better not to #include that in a global header here. */
+ssize_t os_getrandom(void *buf, size_t len, unsigned int flags);
+
+static inline size_t __must_check arch_get_random_longs(unsigned long *v, size_t max_longs)
+{
+ ssize_t ret;
+
+ ret = os_getrandom(v, max_longs * sizeof(*v), 0);
+ if (ret < 0)
+ return 0;
+ return ret / sizeof(*v);
+}
+
+static inline size_t __must_check arch_get_random_seed_longs(unsigned long *v, size_t max_longs)
+{
+ return 0;
+}
+
+#endif
diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h
index 95af12e82a32..cdbd9653aa14 100644
--- a/arch/um/include/asm/page.h
+++ b/arch/um/include/asm/page.h
@@ -102,8 +102,8 @@ extern unsigned long uml_physmem;
* casting is the right thing, but 32-bit UML can't have 64-bit virtual
* addresses
*/
-#define __pa(virt) to_phys((void *) (unsigned long) (virt))
-#define __va(phys) to_virt((unsigned long) (phys))
+#define __pa(virt) uml_to_phys((void *) (unsigned long) (virt))
+#define __va(phys) uml_to_virt((unsigned long) (phys))
#define phys_to_pfn(p) ((p) >> PAGE_SHIFT)
#define pfn_to_phys(pfn) PFN_PHYS(pfn)
diff --git a/arch/um/include/shared/mem.h b/arch/um/include/shared/mem.h
index 4862c91d4213..98aacd544108 100644
--- a/arch/um/include/shared/mem.h
+++ b/arch/um/include/shared/mem.h
@@ -9,12 +9,12 @@
extern int phys_mapping(unsigned long phys, unsigned long long *offset_out);
extern unsigned long uml_physmem;
-static inline unsigned long to_phys(void *virt)
+static inline unsigned long uml_to_phys(void *virt)
{
return(((unsigned long) virt) - uml_physmem);
}
-static inline void *to_virt(unsigned long phys)
+static inline void *uml_to_virt(unsigned long phys)
{
return((void *) uml_physmem + phys);
}
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index fafde1d5416e..0df646c6651e 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -11,6 +11,12 @@
#include <irq_user.h>
#include <longjmp.h>
#include <mm_id.h>
+/* This is to get size_t */
+#ifndef __UM_HOST__
+#include <linux/types.h>
+#else
+#include <sys/types.h>
+#endif
#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
@@ -243,6 +249,7 @@ extern void stack_protections(unsigned long address);
extern int raw(int fd);
extern void setup_machinename(char *machine_out);
extern void setup_hostinfo(char *buf, int len);
+extern ssize_t os_getrandom(void *buf, size_t len, unsigned int flags);
extern void os_dump_core(void) __attribute__ ((noreturn));
extern void um_early_printk(const char *s, unsigned int n);
extern void os_fix_helper_signals(void);
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 0760e24f2eba..e0de60e503b9 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -16,6 +16,7 @@
#include <linux/sched/task.h>
#include <linux/kmsg_dump.h>
#include <linux/suspend.h>
+#include <linux/random.h>
#include <asm/processor.h>
#include <asm/cpufeature.h>
@@ -406,6 +407,8 @@ int __init __weak read_initrd(void)
void __init setup_arch(char **cmdline_p)
{
+ u8 rng_seed[32];
+
stack_protections((unsigned long) &init_thread_info);
setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem);
mem_total_pages(physmem_size, iomem_size, highmem);
@@ -416,6 +419,11 @@ void __init setup_arch(char **cmdline_p)
strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
setup_hostinfo(host_info, sizeof host_info);
+
+ if (os_getrandom(rng_seed, sizeof(rng_seed), 0) == sizeof(rng_seed)) {
+ add_bootloader_randomness(rng_seed, sizeof(rng_seed));
+ memzero_explicit(rng_seed, sizeof(rng_seed));
+ }
}
void __init check_bugs(void)
@@ -432,6 +440,10 @@ void apply_retpolines(s32 *start, s32 *end)
{
}
+void apply_returns(s32 *start, s32 *end)
+{
+}
+
void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
{
}
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 87d3129e7362..c316c993a949 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -251,7 +251,7 @@ static int userspace_tramp(void *stack)
signal(SIGTERM, SIG_DFL);
signal(SIGWINCH, SIG_IGN);
- fd = phys_mapping(to_phys(__syscall_stub_start), &offset);
+ fd = phys_mapping(uml_to_phys(__syscall_stub_start), &offset);
addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE,
PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset);
if (addr == MAP_FAILED) {
@@ -261,7 +261,7 @@ static int userspace_tramp(void *stack)
}
if (stack != NULL) {
- fd = phys_mapping(to_phys(stack), &offset);
+ fd = phys_mapping(uml_to_phys(stack), &offset);
addr = mmap((void *) STUB_DATA,
UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_FIXED | MAP_SHARED, fd, offset);
@@ -534,7 +534,7 @@ int copy_context_skas0(unsigned long new_stack, int pid)
struct stub_data *data = (struct stub_data *) current_stack;
struct stub_data *child_data = (struct stub_data *) new_stack;
unsigned long long new_offset;
- int new_fd = phys_mapping(to_phys((void *)new_stack), &new_offset);
+ int new_fd = phys_mapping(uml_to_phys((void *)new_stack), &new_offset);
/*
* prepare offset and fd of child's stack as argument for parent's
diff --git a/arch/um/os-Linux/util.c b/arch/um/os-Linux/util.c
index 41297ec404bf..fc0f2a9dee5a 100644
--- a/arch/um/os-Linux/util.c
+++ b/arch/um/os-Linux/util.c
@@ -14,6 +14,7 @@
#include <sys/wait.h>
#include <sys/mman.h>
#include <sys/utsname.h>
+#include <sys/random.h>
#include <init.h>
#include <os.h>
@@ -96,6 +97,11 @@ static inline void __attribute__ ((noreturn)) uml_abort(void)
exit(127);
}
+ssize_t os_getrandom(void *buf, size_t len, unsigned int flags)
+{
+ return getrandom(buf, len, flags);
+}
+
/*
* UML helper threads must not handle SIGWINCH/INT/TERM
*/
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-18 15:16:09 +0300