diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 13 | ||||
| -rw-r--r-- | init/do_mounts.c | 3 | ||||
| -rw-r--r-- | init/do_mounts.h | 9 | ||||
| -rw-r--r-- | init/init_task.c | 1 | ||||
| -rw-r--r-- | init/initramfs.c | 10 | ||||
| -rw-r--r-- | init/main.c | 36 |
6 files changed, 40 insertions, 32 deletions
diff --git a/init/Kconfig b/init/Kconfig index 8426d59cc634..f3ea5dea9c85 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -115,7 +115,7 @@ config CONSTRUCTORS bool config IRQ_WORK - bool + def_bool y if SMP config BUILDTIME_TABLE_SORT bool @@ -876,14 +876,14 @@ config CC_IMPLICIT_FALLTHROUGH default "-Wimplicit-fallthrough=5" if CC_IS_GCC && $(cc-option,-Wimplicit-fallthrough=5) default "-Wimplicit-fallthrough" if CC_IS_CLANG && $(cc-option,-Wunreachable-code-fallthrough) -# Currently, disable gcc-11+ array-bounds globally. +# Currently, disable gcc-10+ array-bounds globally. # It's still broken in gcc-13, so no upper bound yet. -config GCC11_NO_ARRAY_BOUNDS +config GCC10_NO_ARRAY_BOUNDS def_bool y config CC_NO_ARRAY_BOUNDS bool - default y if CC_IS_GCC && GCC_VERSION >= 110000 && GCC11_NO_ARRAY_BOUNDS + default y if CC_IS_GCC && GCC_VERSION >= 100000 && GCC10_NO_ARRAY_BOUNDS # Currently, disable -Wstringop-overflow for GCC globally. config GCC_NO_STRINGOP_OVERFLOW @@ -1466,11 +1466,6 @@ config SYSCTL_ARCH_UNALIGN_ALLOW config HAVE_PCSPKR_PLATFORM bool -# interpreter that classic socket filters depend on -config BPF - bool - select CRYPTO_LIB_SHA1 - menuconfig EXPERT bool "Configure standard kernel features (expert users)" # Unhide debug options, to make the on-by-default options visible diff --git a/init/do_mounts.c b/init/do_mounts.c index 279ad28bf4fb..3c5fd993bc7e 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -208,6 +208,9 @@ retry: goto out; case -EACCES: case -EINVAL: +#ifdef CONFIG_BLOCK + init_flush_fput(); +#endif continue; } /* diff --git a/init/do_mounts.h b/init/do_mounts.h index 15e372b00ce7..6069ea3eb80d 100644 --- a/init/do_mounts.h +++ b/init/do_mounts.h @@ -9,6 +9,8 @@ #include <linux/major.h> #include <linux/root_dev.h> #include <linux/init_syscalls.h> +#include <linux/task_work.h> +#include <linux/file.h> void mount_root_generic(char *name, char *pretty_name, int flags); void mount_root(char *root_device_name); @@ -41,3 +43,10 @@ static inline bool initrd_load(char *root_device_name) } #endif + +/* Ensure that async file closing finished to prevent spurious errors. */ +static inline void init_flush_fput(void) +{ + flush_delayed_fput(); + task_work_run(); +} diff --git a/init/init_task.c b/init/init_task.c index 7ecb458eb3da..4daee6d761c8 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -147,6 +147,7 @@ struct task_struct init_task __aligned(L1_CACHE_BYTES) = { .rcu_tasks_holdout = false, .rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list), .rcu_tasks_idle_cpu = -1, + .rcu_tasks_exit_list = LIST_HEAD_INIT(init_task.rcu_tasks_exit_list), #endif #ifdef CONFIG_TASKS_TRACE_RCU .trc_reader_nesting = 0, diff --git a/init/initramfs.c b/init/initramfs.c index 76deb48c38cb..da79760b8be3 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -16,9 +16,10 @@ #include <linux/mm.h> #include <linux/namei.h> #include <linux/init_syscalls.h> -#include <linux/task_work.h> #include <linux/umh.h> +#include "do_mounts.h" + static __initdata bool csum_present; static __initdata u32 io_csum; @@ -642,7 +643,7 @@ void __weak __init free_initrd_mem(unsigned long start, unsigned long end) "initrd"); } -#ifdef CONFIG_KEXEC_CORE +#ifdef CONFIG_CRASH_RESERVE static bool __init kexec_free_initrd(void) { unsigned long crashk_start = (unsigned long)__va(crashk_res.start); @@ -679,8 +680,6 @@ static void __init populate_initrd_image(char *err) struct file *file; loff_t pos = 0; - unpack_to_rootfs(__initramfs_start, __initramfs_size); - printk(KERN_INFO "rootfs image is not initramfs (%s); looks like an initrd\n", err); file = filp_open("/initrd.image", O_WRONLY | O_CREAT, 0700); @@ -736,8 +735,7 @@ done: initrd_start = 0; initrd_end = 0; - flush_delayed_fput(); - task_work_run(); + init_flush_fput(); } static ASYNC_DOMAIN_EXCLUSIVE(initramfs_domain); diff --git a/init/main.c b/init/main.c index 521f40770e67..2ca52474d0c3 100644 --- a/init/main.c +++ b/init/main.c @@ -88,6 +88,7 @@ #include <linux/sched/task_stack.h> #include <linux/context_tracking.h> #include <linux/random.h> +#include <linux/moduleloader.h> #include <linux/list.h> #include <linux/integrity.h> #include <linux/proc_ns.h> @@ -99,6 +100,8 @@ #include <linux/init_syscalls.h> #include <linux/stackdepot.h> #include <linux/randomize_kstack.h> +#include <linux/pidfs.h> +#include <linux/ptdump.h> #include <net/net_namespace.h> #include <asm/io.h> @@ -603,7 +606,6 @@ static int __init rdinit_setup(char *str) __setup("rdinit=", rdinit_setup); #ifndef CONFIG_SMP -static const unsigned int setup_max_cpus = NR_CPUS; static inline void setup_nr_cpu_ids(void) { } static inline void smp_prepare_cpus(unsigned int maxcpus) { } #endif @@ -776,6 +778,10 @@ void __init __weak smp_setup_processor_id(void) { } +void __init __weak smp_prepare_boot_cpu(void) +{ +} + # if THREAD_SIZE >= PAGE_SIZE void __init __weak thread_stack_cache_init(void) { @@ -1054,6 +1060,7 @@ void start_kernel(void) seq_file_init(); proc_root_init(); nsfs_init(); + pidfs_init(); cpuset_init(); cgroup_init(); taskstats_init_early(); @@ -1391,33 +1398,27 @@ static int __init set_debug_rodata(char *str) early_param("rodata", set_debug_rodata); #endif -#ifdef CONFIG_STRICT_KERNEL_RWX static void mark_readonly(void) { - if (rodata_enabled) { + if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX) && rodata_enabled) { /* * load_module() results in W+X mappings, which are cleaned - * up with call_rcu(). Let's make sure that queued work is + * up with init_free_wq. Let's make sure that queued work is * flushed so that we don't hit false positives looking for * insecure pages which are W+X. */ - rcu_barrier(); + flush_module_init_free_work(); mark_rodata_ro(); + debug_checkwx(); rodata_test(); - } else + } else if (IS_ENABLED(CONFIG_STRICT_KERNEL_RWX)) { pr_info("Kernel memory protection disabled.\n"); + } else if (IS_ENABLED(CONFIG_ARCH_HAS_STRICT_KERNEL_RWX)) { + pr_warn("Kernel memory protection not selected by kernel config.\n"); + } else { + pr_warn("This architecture does not have kernel memory protection.\n"); + } } -#elif defined(CONFIG_ARCH_HAS_STRICT_KERNEL_RWX) -static inline void mark_readonly(void) -{ - pr_warn("Kernel memory protection not selected by kernel config.\n"); -} -#else -static inline void mark_readonly(void) -{ - pr_warn("This architecture does not have kernel memory protection.\n"); -} -#endif void __weak free_initmem(void) { @@ -1540,6 +1541,7 @@ static noinline void __init kernel_init_freeable(void) sched_init_smp(); workqueue_init_topology(); + async_init(); padata_init(); page_alloc_init_late(); |