diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/btf.c | 6 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_io.c | 16 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_keyboard.c | 2 | ||||
| -rw-r--r-- | kernel/debug/kdb/kdb_private.h | 1 | ||||
| -rw-r--r-- | kernel/fork.c | 7 | ||||
| -rw-r--r-- | kernel/module/main.c | 39 | ||||
| -rw-r--r-- | kernel/sys_ni.c | 110 | ||||
| -rw-r--r-- | kernel/trace/trace.c | 2 | ||||
| -rw-r--r-- | kernel/trace/trace_boot.c | 8 |
9 files changed, 49 insertions, 142 deletions
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c index 29fe21099298..817204d53372 100644 --- a/kernel/bpf/btf.c +++ b/kernel/bpf/btf.c @@ -7891,10 +7891,8 @@ static int __register_btf_kfunc_id_set(enum btf_kfunc_hook hook, pr_err("missing vmlinux BTF, cannot register kfuncs\n"); return -ENOENT; } - if (kset->owner && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES)) { - pr_err("missing module BTF, cannot register kfuncs\n"); - return -ENOENT; - } + if (kset->owner && IS_ENABLED(CONFIG_DEBUG_INFO_BTF_MODULES)) + pr_warn("missing module BTF, cannot register kfuncs\n"); return 0; } if (IS_ERR(btf)) diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index 5c7e9ba7cd6b..813cb6cf72d6 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -131,6 +131,7 @@ char kdb_getchar(void) int escape_delay = 0; get_char_func *f, *f_prev = NULL; int key; + static bool last_char_was_cr; for (f = &kdb_poll_funcs[0]; ; ++f) { if (*f == NULL) { @@ -150,6 +151,18 @@ char kdb_getchar(void) } /* + * The caller expects that newlines are either CR or LF. However + * some terminals send _both_ CR and LF. Avoid having to handle + * this in the caller by stripping the LF if we saw a CR right + * before. + */ + if (last_char_was_cr && key == '\n') { + last_char_was_cr = false; + continue; + } + last_char_was_cr = (key == '\r'); + + /* * When the first character is received (or we get a change * input source) we set ourselves up to handle an escape * sequences (just in case). @@ -244,7 +257,8 @@ poll_again: *cp = tmp; } break; - case 13: /* enter */ + case 10: /* linefeed */ + case 13: /* carriage return */ *lastchar++ = '\n'; *lastchar++ = '\0'; if (!KDB_STATE(KGDB_TRANS)) { diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboard.c index f87c750d3eb3..3c2987f46f6e 100644 --- a/kernel/debug/kdb/kdb_keyboard.c +++ b/kernel/debug/kdb/kdb_keyboard.c @@ -13,6 +13,8 @@ #include <linux/ctype.h> #include <linux/io.h> +#include "kdb_private.h" + /* Keyboard Controller Registers on normal PCs. */ #define KBD_STATUS_REG 0x64 /* Status register (R) */ diff --git a/kernel/debug/kdb/kdb_private.h b/kernel/debug/kdb/kdb_private.h index 1f8c519a5f81..548fd4059bf9 100644 --- a/kernel/debug/kdb/kdb_private.h +++ b/kernel/debug/kdb/kdb_private.h @@ -194,7 +194,6 @@ extern char kdb_task_state_char (const struct task_struct *); extern bool kdb_task_state(const struct task_struct *p, const char *mask); extern void kdb_ps_suppressed(void); extern void kdb_ps1(const struct task_struct *p); -extern void kdb_send_sig(struct task_struct *p, int sig); extern char kdb_getchar(void); extern char *kdb_getstr(char *, size_t, const char *); extern void kdb_gdb_state_pass(char *buf); diff --git a/kernel/fork.c b/kernel/fork.c index 2ba918f83bde..d2e12b6d2b18 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -658,12 +658,6 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, retval = -EINTR; goto fail_uprobe_end; } -#ifdef CONFIG_PER_VMA_LOCK - /* Disallow any page faults before calling flush_cache_dup_mm */ - for_each_vma(old_vmi, mpnt) - vma_start_write(mpnt); - vma_iter_set(&old_vmi, 0); -#endif flush_cache_dup_mm(oldmm); uprobe_dup_mmap(oldmm, mm); /* @@ -692,6 +686,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, for_each_vma(old_vmi, mpnt) { struct file *file; + vma_start_write(mpnt); if (mpnt->vm_flags & VM_DONTCOPY) { vm_stat_account(mm, mpnt->vm_flags, -vma_pages(mpnt)); continue; diff --git a/kernel/module/main.c b/kernel/module/main.c index 834de86ebe35..59b1d067e528 100644 --- a/kernel/module/main.c +++ b/kernel/module/main.c @@ -3092,7 +3092,7 @@ static bool idempotent(struct idempotent *u, const void *cookie) * remove everybody - which includes ourselves - fill in the return * value, and then complete the operation. */ -static void idempotent_complete(struct idempotent *u, int ret) +static int idempotent_complete(struct idempotent *u, int ret) { const void *cookie = u->cookie; int hash = hash_ptr(cookie, IDEM_HASH_BITS); @@ -3109,27 +3109,18 @@ static void idempotent_complete(struct idempotent *u, int ret) complete(&pos->complete); } spin_unlock(&idem_lock); + return ret; } static int init_module_from_file(struct file *f, const char __user * uargs, int flags) { - struct idempotent idem; struct load_info info = { }; void *buf = NULL; - int len, ret; - - if (!f || !(f->f_mode & FMODE_READ)) - return -EBADF; - - if (idempotent(&idem, file_inode(f))) { - wait_for_completion(&idem.complete); - return idem.ret; - } + int len; len = kernel_read_file(f, 0, &buf, INT_MAX, NULL, READING_MODULE); if (len < 0) { mod_stat_inc(&failed_kreads); - mod_stat_add_long(len, &invalid_kread_bytes); return len; } @@ -3146,9 +3137,25 @@ static int init_module_from_file(struct file *f, const char __user * uargs, int info.len = len; } - ret = load_module(&info, uargs, flags); - idempotent_complete(&idem, ret); - return ret; + return load_module(&info, uargs, flags); +} + +static int idempotent_init_module(struct file *f, const char __user * uargs, int flags) +{ + struct idempotent idem; + + if (!f || !(f->f_mode & FMODE_READ)) + return -EBADF; + + /* See if somebody else is doing the operation? */ + if (idempotent(&idem, file_inode(f))) { + wait_for_completion(&idem.complete); + return idem.ret; + } + + /* Otherwise, we'll do it and complete others */ + return idempotent_complete(&idem, + init_module_from_file(f, uargs, flags)); } SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags) @@ -3168,7 +3175,7 @@ SYSCALL_DEFINE3(finit_module, int, fd, const char __user *, uargs, int, flags) return -EINVAL; f = fdget(fd); - err = init_module_from_file(f.file, uargs, flags); + err = idempotent_init_module(f.file, uargs, flags); fdput(f); return err; } diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index 04bfb1e4d377..781de7cc6a4e 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -51,99 +51,35 @@ COND_SYSCALL_COMPAT(io_pgetevents); COND_SYSCALL(io_uring_setup); COND_SYSCALL(io_uring_enter); COND_SYSCALL(io_uring_register); - -/* fs/xattr.c */ - -/* fs/dcache.c */ - -/* fs/cookies.c */ COND_SYSCALL(lookup_dcookie); COND_SYSCALL_COMPAT(lookup_dcookie); - -/* fs/eventfd.c */ COND_SYSCALL(eventfd2); - -/* fs/eventfd.c */ COND_SYSCALL(epoll_create1); COND_SYSCALL(epoll_ctl); COND_SYSCALL(epoll_pwait); COND_SYSCALL_COMPAT(epoll_pwait); COND_SYSCALL(epoll_pwait2); COND_SYSCALL_COMPAT(epoll_pwait2); - -/* fs/fcntl.c */ - -/* fs/inotify_user.c */ COND_SYSCALL(inotify_init1); COND_SYSCALL(inotify_add_watch); COND_SYSCALL(inotify_rm_watch); - -/* fs/ioctl.c */ - -/* fs/ioprio.c */ COND_SYSCALL(ioprio_set); COND_SYSCALL(ioprio_get); - -/* fs/locks.c */ COND_SYSCALL(flock); - -/* fs/namei.c */ - -/* fs/namespace.c */ - -/* fs/nfsctl.c */ - -/* fs/open.c */ - -/* fs/pipe.c */ - -/* fs/quota.c */ COND_SYSCALL(quotactl); COND_SYSCALL(quotactl_fd); - -/* fs/readdir.c */ - -/* fs/read_write.c */ - -/* fs/sendfile.c */ - -/* fs/select.c */ - -/* fs/signalfd.c */ COND_SYSCALL(signalfd4); COND_SYSCALL_COMPAT(signalfd4); - -/* fs/splice.c */ - -/* fs/stat.c */ - -/* fs/sync.c */ - -/* fs/timerfd.c */ COND_SYSCALL(timerfd_create); COND_SYSCALL(timerfd_settime); COND_SYSCALL(timerfd_settime32); COND_SYSCALL(timerfd_gettime); COND_SYSCALL(timerfd_gettime32); - -/* fs/utimes.c */ - -/* kernel/acct.c */ COND_SYSCALL(acct); - -/* kernel/capability.c */ COND_SYSCALL(capget); COND_SYSCALL(capset); - -/* kernel/exec_domain.c */ - -/* kernel/exit.c */ - -/* kernel/fork.c */ /* __ARCH_WANT_SYS_CLONE3 */ COND_SYSCALL(clone3); - -/* kernel/futex/syscalls.c */ COND_SYSCALL(futex); COND_SYSCALL(futex_time32); COND_SYSCALL(set_robust_list); @@ -151,29 +87,11 @@ COND_SYSCALL_COMPAT(set_robust_list); COND_SYSCALL(get_robust_list); COND_SYSCALL_COMPAT(get_robust_list); COND_SYSCALL(futex_waitv); - -/* kernel/hrtimer.c */ - -/* kernel/itimer.c */ - -/* kernel/kexec.c */ COND_SYSCALL(kexec_load); COND_SYSCALL_COMPAT(kexec_load); - -/* kernel/module.c */ COND_SYSCALL(init_module); COND_SYSCALL(delete_module); - -/* kernel/posix-timers.c */ - -/* kernel/printk.c */ COND_SYSCALL(syslog); - -/* kernel/ptrace.c */ - -/* kernel/sched/core.c */ - -/* kernel/sys.c */ COND_SYSCALL(setregid); COND_SYSCALL(setgid); COND_SYSCALL(setreuid); @@ -186,12 +104,6 @@ COND_SYSCALL(setfsuid); COND_SYSCALL(setfsgid); COND_SYSCALL(setgroups); COND_SYSCALL(getgroups); - -/* kernel/time.c */ - -/* kernel/timer.c */ - -/* ipc/mqueue.c */ COND_SYSCALL(mq_open); COND_SYSCALL_COMPAT(mq_open); COND_SYSCALL(mq_unlink); @@ -203,8 +115,6 @@ COND_SYSCALL(mq_notify); COND_SYSCALL_COMPAT(mq_notify); COND_SYSCALL(mq_getsetattr); COND_SYSCALL_COMPAT(mq_getsetattr); - -/* ipc/msg.c */ COND_SYSCALL(msgget); COND_SYSCALL(old_msgctl); COND_SYSCALL(msgctl); @@ -214,8 +124,6 @@ COND_SYSCALL(msgrcv); COND_SYSCALL_COMPAT(msgrcv); COND_SYSCALL(msgsnd); COND_SYSCALL_COMPAT(msgsnd); - -/* ipc/sem.c */ COND_SYSCALL(semget); COND_SYSCALL(old_semctl); COND_SYSCALL(semctl); @@ -224,8 +132,6 @@ COND_SYSCALL_COMPAT(old_semctl); COND_SYSCALL(semtimedop); COND_SYSCALL(semtimedop_time32); COND_SYSCALL(semop); - -/* ipc/shm.c */ COND_SYSCALL(shmget); COND_SYSCALL(old_shmctl); COND_SYSCALL(shmctl); @@ -234,8 +140,6 @@ COND_SYSCALL_COMPAT(old_shmctl); COND_SYSCALL(shmat); COND_SYSCALL_COMPAT(shmat); COND_SYSCALL(shmdt); - -/* net/socket.c */ COND_SYSCALL(socket); COND_SYSCALL(socketpair); COND_SYSCALL(bind); @@ -256,30 +160,18 @@ COND_SYSCALL(sendmsg); COND_SYSCALL_COMPAT(sendmsg); COND_SYSCALL(recvmsg); COND_SYSCALL_COMPAT(recvmsg); - -/* mm/filemap.c */ - -/* mm/nommu.c, also with MMU */ COND_SYSCALL(mremap); - -/* security/keys/keyctl.c */ COND_SYSCALL(add_key); COND_SYSCALL(request_key); COND_SYSCALL(keyctl); COND_SYSCALL_COMPAT(keyctl); - -/* security/landlock/syscalls.c */ COND_SYSCALL(landlock_create_ruleset); COND_SYSCALL(landlock_add_rule); COND_SYSCALL(landlock_restrict_self); - -/* arch/example/kernel/sys_example.c */ - -/* mm/fadvise.c */ COND_SYSCALL(fadvise64_64); COND_SYSCALL_COMPAT(fadvise64_64); -/* mm/, CONFIG_MMU only */ +/* CONFIG_MMU only */ COND_SYSCALL(swapon); COND_SYSCALL(swapoff); COND_SYSCALL(mprotect); diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index b04f52e7cd28..4529e264cb86 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -8146,7 +8146,7 @@ static const struct file_operations tracing_err_log_fops = { .open = tracing_err_log_open, .write = tracing_err_log_write, .read = seq_read, - .llseek = seq_lseek, + .llseek = tracing_lseek, .release = tracing_err_log_release, }; diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c index 5fe525f1b8cc..7ccc7a8e155b 100644 --- a/kernel/trace/trace_boot.c +++ b/kernel/trace/trace_boot.c @@ -31,7 +31,7 @@ trace_boot_set_instance_options(struct trace_array *tr, struct xbc_node *node) /* Common ftrace options */ xbc_node_for_each_array_value(node, "options", anode, p) { - if (strscpy(buf, p, ARRAY_SIZE(buf)) == -E2BIG) { + if (strscpy(buf, p, ARRAY_SIZE(buf)) < 0) { pr_err("String is too long: %s\n", p); continue; } @@ -87,7 +87,7 @@ trace_boot_enable_events(struct trace_array *tr, struct xbc_node *node) const char *p; xbc_node_for_each_array_value(node, "events", anode, p) { - if (strscpy(buf, p, ARRAY_SIZE(buf)) == -E2BIG) { + if (strscpy(buf, p, ARRAY_SIZE(buf)) < 0) { pr_err("String is too long: %s\n", p); continue; } @@ -486,7 +486,7 @@ trace_boot_init_one_event(struct trace_array *tr, struct xbc_node *gnode, p = xbc_node_find_value(enode, "filter", NULL); if (p && *p != '\0') { - if (strscpy(buf, p, ARRAY_SIZE(buf)) == -E2BIG) + if (strscpy(buf, p, ARRAY_SIZE(buf)) < 0) pr_err("filter string is too long: %s\n", p); else if (apply_event_filter(file, buf) < 0) pr_err("Failed to apply filter: %s\n", buf); @@ -494,7 +494,7 @@ trace_boot_init_one_event(struct trace_array *tr, struct xbc_node *gnode, if (IS_ENABLED(CONFIG_HIST_TRIGGERS)) { xbc_node_for_each_array_value(enode, "actions", anode, p) { - if (strscpy(buf, p, ARRAY_SIZE(buf)) == -E2BIG) + if (strscpy(buf, p, ARRAY_SIZE(buf)) < 0) pr_err("action string is too long: %s\n", p); else if (trigger_process_regex(file, buf) < 0) pr_err("Failed to apply an action: %s\n", p); |