diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cgroup/cpuset.c | 2 | ||||
| -rw-r--r-- | kernel/fork.c | 17 | ||||
| -rw-r--r-- | kernel/locking/mutex.c | 2 | ||||
| -rw-r--r-- | kernel/locking/rtmutex.c | 2 | ||||
| -rw-r--r-- | kernel/panic.c | 2 |
5 files changed, 19 insertions, 6 deletions
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index b3b02b9c4405..863e434a6020 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -729,7 +729,7 @@ static inline int nr_cpusets(void) * load balancing domains (sched domains) as specified by that partial * partition. * - * See "What is sched_load_balance" in Documentation/cgroup-v1/cpusets.rst + * See "What is sched_load_balance" in Documentation/admin-guide/cgroup-v1/cpusets.rst * for a background explanation of this. * * Does not return errors, on the theory that the callers of this diff --git a/kernel/fork.c b/kernel/fork.c index dfa78985a6fd..d8ae0f1b4148 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -2405,6 +2405,16 @@ long _do_fork(struct kernel_clone_args *args) return nr; } +bool legacy_clone_args_valid(const struct kernel_clone_args *kargs) +{ + /* clone(CLONE_PIDFD) uses parent_tidptr to return a pidfd */ + if ((kargs->flags & CLONE_PIDFD) && + (kargs->flags & CLONE_PARENT_SETTID)) + return false; + + return true; +} + #ifndef CONFIG_HAVE_COPY_THREAD_TLS /* For compatibility with architectures that call do_fork directly rather than * using the syscall entry points below. */ @@ -2416,6 +2426,7 @@ long do_fork(unsigned long clone_flags, { struct kernel_clone_args args = { .flags = (clone_flags & ~CSIGNAL), + .pidfd = parent_tidptr, .child_tid = child_tidptr, .parent_tid = parent_tidptr, .exit_signal = (clone_flags & CSIGNAL), @@ -2423,6 +2434,9 @@ long do_fork(unsigned long clone_flags, .stack_size = stack_size, }; + if (!legacy_clone_args_valid(&args)) + return -EINVAL; + return _do_fork(&args); } #endif @@ -2504,8 +2518,7 @@ SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp, .tls = tls, }; - /* clone(CLONE_PIDFD) uses parent_tidptr to return a pidfd */ - if ((clone_flags & CLONE_PIDFD) && (clone_flags & CLONE_PARENT_SETTID)) + if (!legacy_clone_args_valid(&args)) return -EINVAL; return _do_fork(&args); diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index 0c601ae072b3..edd1c082dbf5 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -16,7 +16,7 @@ * by Steven Rostedt, based on work by Gregory Haskins, Peter Morreale * and Sven Dietrich. * - * Also see Documentation/locking/mutex-design.txt. + * Also see Documentation/locking/mutex-design.rst. */ #include <linux/mutex.h> #include <linux/ww_mutex.h> diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c index 38fbf9fa7f1b..fa83d36e30c6 100644 --- a/kernel/locking/rtmutex.c +++ b/kernel/locking/rtmutex.c @@ -9,7 +9,7 @@ * Copyright (C) 2005 Kihon Technologies Inc., Steven Rostedt * Copyright (C) 2006 Esben Nielsen * - * See Documentation/locking/rt-mutex-design.txt for details. + * See Documentation/locking/rt-mutex-design.rst for details. */ #include <linux/spinlock.h> #include <linux/export.h> diff --git a/kernel/panic.c b/kernel/panic.c index 4d9f55bf7d38..057540b6eee9 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -372,7 +372,7 @@ const struct taint_flag taint_flags[TAINT_FLAGS_COUNT] = { /** * print_tainted - return a string to represent the kernel taint state. * - * For individual taint flag meanings, see Documentation/sysctl/kernel.txt + * For individual taint flag meanings, see Documentation/admin-guide/sysctl/kernel.rst * * The string is overwritten by the next call to print_tainted(), * but is always NULL terminated. |