diff options
Diffstat (limited to 'arch/um/kernel')
| -rw-r--r-- | arch/um/kernel/skas/clone.c | 6 | ||||
| -rw-r--r-- | arch/um/kernel/skas/mmu.c | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/arch/um/kernel/skas/clone.c b/arch/um/kernel/skas/clone.c index 62435187dda4..906f7454887c 100644 --- a/arch/um/kernel/skas/clone.c +++ b/arch/um/kernel/skas/clone.c @@ -27,9 +27,11 @@ stub_clone_handler(void) struct stub_data *data = get_stub_data(); long err; + /* syscall data as a temporary stack area (bottom half). */ err = stub_syscall2(__NR_clone, CLONE_PARENT | CLONE_FILES | SIGCHLD, - (unsigned long)data + - STUB_DATA_PAGES * UM_KERN_PAGE_SIZE / 2); + (unsigned long) data->syscall_data + + sizeof(data->syscall_data) / 2 - + sizeof(void *)); if (err) { data->parent_err = err; goto done; diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c index aeed1c2aaf3c..681839cdd795 100644 --- a/arch/um/kernel/skas/mmu.c +++ b/arch/um/kernel/skas/mmu.c @@ -14,6 +14,10 @@ #include <as-layout.h> #include <os.h> #include <skas.h> +#include <stub-data.h> + +/* Ensure the stub_data struct covers the allocated area */ +static_assert(sizeof(struct stub_data) == STUB_DATA_PAGES * UM_KERN_PAGE_SIZE); int init_new_context(struct task_struct *task, struct mm_struct *mm) { |