diff options
Diffstat (limited to 'kernel/module.c')
-rw-r--r-- | kernel/module.c | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/kernel/module.c b/kernel/module.c index 1c5cff34d9f2..9d9f2400d94e 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -18,6 +18,7 @@ #include <linux/fs.h> #include <linux/sysfs.h> #include <linux/kernel.h> +#include <linux/kernel_read_file.h> #include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/elf.h> @@ -3013,7 +3014,7 @@ static int copy_module_from_user(const void __user *umod, unsigned long len, if (info->len < sizeof(*(info->hdr))) return -ENOEXEC; - err = security_kernel_load_data(LOADING_MODULE); + err = security_kernel_load_data(LOADING_MODULE, true); if (err) return err; @@ -3023,11 +3024,17 @@ static int copy_module_from_user(const void __user *umod, unsigned long len, return -ENOMEM; if (copy_chunked_from_user(info->hdr, umod, info->len) != 0) { - vfree(info->hdr); - return -EFAULT; + err = -EFAULT; + goto out; } - return 0; + err = security_kernel_post_load_data((char *)info->hdr, info->len, + LOADING_MODULE, "init_module"); +out: + if (err) + vfree(info->hdr); + + return err; } static void free_copy(struct load_info *info) @@ -3275,6 +3282,11 @@ static int find_module_sections(struct module *mod, struct load_info *info) sizeof(unsigned long), &mod->num_kprobe_blacklist); #endif +#ifdef CONFIG_HAVE_STATIC_CALL_INLINE + mod->static_call_sites = section_objs(info, ".static_call_sites", + sizeof(*mod->static_call_sites), + &mod->num_static_call_sites); +#endif mod->extable = section_objs(info, "__ex_table", sizeof(*mod->extable), &mod->num_exentries); @@ -3792,9 +3804,13 @@ static int prepare_coming_module(struct module *mod) if (err) return err; - blocking_notifier_call_chain(&module_notify_list, - MODULE_STATE_COMING, mod); - return 0; + err = blocking_notifier_call_chain_robust(&module_notify_list, + MODULE_STATE_COMING, MODULE_STATE_GOING, mod); + err = notifier_to_errno(err); + if (err) + klp_module_going(mod); + + return err; } static int unknown_module_param_cb(char *param, char *val, const char *modname, @@ -4034,8 +4050,7 @@ SYSCALL_DEFINE3(init_module, void __user *, umod, SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags) { struct load_info info = { }; - loff_t size; - void *hdr; + void *hdr = NULL; int err; err = may_init_module(); @@ -4048,12 +4063,12 @@ SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags) |MODULE_INIT_IGNORE_VERMAGIC)) return -EINVAL; - err = kernel_read_file_from_fd(fd, &hdr, &size, INT_MAX, + err = kernel_read_file_from_fd(fd, 0, &hdr, INT_MAX, NULL, READING_MODULE); - if (err) + if (err < 0) return err; info.hdr = hdr; - info.len = size; + info.len = err; return load_module(&info, uargs, flags); } |