diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2021-09-11 00:38:47 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-09-11 00:38:47 +0200 |
| commit | c2f4954c2d3fc4f77b46c67585e17a58df4ba8e4 (patch) | |
| tree | 533a2077028e02a851e51ad509a0aa3a9107999f /kernel/sys.c | |
| parent | 4b92d4add5f6dcf21275185c997d6ecb800054cd (diff) | |
| parent | 926de8c4326c14fcf35f1de142019043597a4fac (diff) | |
Merge branch 'linus' into smp/urgent
Ensure that all usage sites of get/put_online_cpus() except for the
struggler in drivers/thermal are gone. So the last user and the deprecated
inlines can be removed.
Diffstat (limited to 'kernel/sys.c')
| -rw-r--r-- | kernel/sys.c | 43 |
1 files changed, 3 insertions, 40 deletions
diff --git a/kernel/sys.c b/kernel/sys.c index ef1a78f5d71c..8fdac0d90504 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -480,7 +480,8 @@ static int set_user(struct cred *new) * failure to the execve() stage. */ if (is_ucounts_overlimit(new->ucounts, UCOUNT_RLIMIT_NPROC, rlimit(RLIMIT_NPROC)) && - new_user != INIT_USER) + new_user != INIT_USER && + !capable(CAP_SYS_RESOURCE) && !capable(CAP_SYS_ADMIN)) current->flags |= PF_NPROC_EXCEEDED; else current->flags &= ~PF_NPROC_EXCEEDED; @@ -1846,7 +1847,6 @@ SYSCALL_DEFINE1(umask, int, mask) static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) { struct fd exe; - struct file *old_exe, *exe_file; struct inode *inode; int err; @@ -1869,40 +1869,10 @@ static int prctl_set_mm_exe_file(struct mm_struct *mm, unsigned int fd) if (err) goto exit; - /* - * Forbid mm->exe_file change if old file still mapped. - */ - exe_file = get_mm_exe_file(mm); - err = -EBUSY; - if (exe_file) { - struct vm_area_struct *vma; - - mmap_read_lock(mm); - for (vma = mm->mmap; vma; vma = vma->vm_next) { - if (!vma->vm_file) - continue; - if (path_equal(&vma->vm_file->f_path, - &exe_file->f_path)) - goto exit_err; - } - - mmap_read_unlock(mm); - fput(exe_file); - } - - err = 0; - /* set the new file, lockless */ - get_file(exe.file); - old_exe = xchg(&mm->exe_file, exe.file); - if (old_exe) - fput(old_exe); + err = replace_mm_exe_file(mm, exe.file); exit: fdput(exe); return err; -exit_err: - mmap_read_unlock(mm); - fput(exe_file); - goto exit; } /* @@ -1960,13 +1930,6 @@ static int validate_prctl_map_addr(struct prctl_mm_map *prctl_map) error = -EINVAL; /* - * @brk should be after @end_data in traditional maps. - */ - if (prctl_map->start_brk <= prctl_map->end_data || - prctl_map->brk <= prctl_map->end_data) - goto out; - - /* * Neither we should allow to override limits if they set. */ if (check_data_rlimit(rlimit(RLIMIT_DATA), prctl_map->brk, |