diff options
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 16 | ||||
| -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 | 12 | ||||
| -rw-r--r-- | init/main.c | 40 |
6 files changed, 43 insertions, 38 deletions
diff --git a/init/Kconfig b/init/Kconfig index c8a155cf72..459f44ef7c 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 @@ -743,8 +743,8 @@ config LOG_CPU_MAX_BUF_SHIFT int "CPU kernel log buffer size contribution (13 => 8 KB, 17 => 128KB)" depends on SMP range 0 21 - default 12 if !BASE_SMALL - default 0 if BASE_SMALL + default 0 if BASE_SMALL != 0 + default 12 depends on PRINTK help This option allows to increase the default ring buffer size @@ -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 @@ -1504,7 +1499,7 @@ config MULTIUSER config SGETMASK_SYSCALL bool "sgetmask/ssetmask syscalls support" if EXPERT - def_bool PARISC || M68K || PPC || MIPS || X86 || SPARC || MICROBLAZE || SUPERH + default PARISC || M68K || PPC || MIPS || X86 || SPARC || MICROBLAZE || SUPERH help sys_sgetmask and sys_ssetmask are obsolete system calls no longer supported in libc but still enabled by default in some @@ -1991,6 +1986,9 @@ source "kernel/Kconfig.locks" config ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE bool +config ARCH_HAS_PREPARE_SYNC_CORE_CMD + bool + config ARCH_HAS_SYNC_CORE_BEFORE_USERMODE bool diff --git a/init/do_mounts.c b/init/do_mounts.c index 279ad28bf4..3c5fd993bc 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 15e372b00c..6069ea3eb8 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 7ecb458eb3..4daee6d761 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 b607d3463b..a298a3854a 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; @@ -366,7 +367,7 @@ static int __init do_name(void) if (S_ISREG(mode)) { int ml = maybe_link(); if (ml >= 0) { - int openflags = O_WRONLY|O_CREAT; + int openflags = O_WRONLY|O_CREAT|O_LARGEFILE; if (ml != 1) openflags |= O_TRUNC; wfile = filp_open(collected, openflags, mode); @@ -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|O_LARGEFILE, 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 b06bb72a28..5dcf5274c0 100644 --- a/init/main.c +++ b/init/main.c @@ -100,6 +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> @@ -609,7 +611,6 @@ 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 @@ -689,7 +690,7 @@ static void __init setup_command_line(char *command_line) static __initdata DECLARE_COMPLETION(kthreadd_done); -noinline void __ref __noreturn rest_init(void) +static noinline void __ref __noreturn rest_init(void) { struct task_struct *tsk; int pid; @@ -784,6 +785,10 @@ 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) { @@ -830,11 +835,6 @@ static int __init early_randomize_kstack_offset(char *buf) early_param("randomize_kstack_offset", early_randomize_kstack_offset); #endif -void __init __weak __noreturn arch_call_rest_init(void) -{ - rest_init(); -} - static void __init print_unknown_bootoptions(void) { char *unknown_options; @@ -1067,6 +1067,7 @@ void start_kernel(void) seq_file_init(); proc_root_init(); nsfs_init(); + pidfs_init(); cpuset_init(); cgroup_init(); taskstats_init_early(); @@ -1077,7 +1078,7 @@ void start_kernel(void) kcsan_init(); /* Do the rest non-__init'ed, we're now alive */ - arch_call_rest_init(); + rest_init(); /* * Avoid stack canaries in callers of boot_init_stack_canary for gcc-10 @@ -1404,10 +1405,9 @@ 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 init_free_wq. Let's make sure that queued work is @@ -1416,21 +1416,16 @@ static void mark_readonly(void) */ 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) { @@ -1553,6 +1548,7 @@ static noinline void __init kernel_init_freeable(void) sched_init_smp(); workqueue_init_topology(); + async_init(); padata_init(); page_alloc_init_late(); |