diff options
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 47 |
1 files changed, 18 insertions, 29 deletions
diff --git a/fs/exec.c b/fs/exec.c index 92ce83a11e9..c8b63d14da8 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -59,10 +59,13 @@ #include <asm/uaccess.h> #include <asm/mmu_context.h> #include <asm/tlb.h> +#include <asm/exec.h> #include <trace/events/task.h> #include "internal.h" +#include <trace/events/sched.h> + int core_uses_pid; char core_pattern[CORENAME_MAX_SIZE] = "core"; unsigned int core_pipe_limit; @@ -79,15 +82,13 @@ static atomic_t call_count = ATOMIC_INIT(1); static LIST_HEAD(formats); static DEFINE_RWLOCK(binfmt_lock); -int __register_binfmt(struct linux_binfmt * fmt, int insert) +void __register_binfmt(struct linux_binfmt * fmt, int insert) { - if (!fmt) - return -EINVAL; + BUG_ON(!fmt); write_lock(&binfmt_lock); insert ? list_add(&fmt->lh, &formats) : list_add_tail(&fmt->lh, &formats); write_unlock(&binfmt_lock); - return 0; } EXPORT_SYMBOL(__register_binfmt); @@ -822,7 +823,7 @@ static int exec_mmap(struct mm_struct *mm) /* Notify parent that we're no longer interested in the old VM */ tsk = current; old_mm = current->mm; - sync_mm_rss(tsk, old_mm); + sync_mm_rss(old_mm); mm_release(tsk, old_mm); if (old_mm) { @@ -848,6 +849,7 @@ static int exec_mmap(struct mm_struct *mm) if (old_mm) { up_read(&old_mm->mmap_sem); BUG_ON(active_mm != old_mm); + setmax_mm_hiwater_rss(&tsk->signal->maxrss, old_mm); mm_update_next_owner(old_mm); mmput(old_mm); return 0; @@ -975,8 +977,8 @@ static int de_thread(struct task_struct *tsk) sig->notify_count = 0; no_thread_group: - if (current->mm) - setmax_mm_hiwater_rss(&sig->maxrss, current->mm); + /* we have changed execution domain */ + tsk->exit_signal = SIGCHLD; exit_itimers(sig); flush_itimer_signals(); @@ -1112,7 +1114,7 @@ int flush_old_exec(struct linux_binprm * bprm) bprm->mm = NULL; /* We're using it now */ set_fs(USER_DS); - current->flags &= ~(PF_RANDOMIZE | PF_KTHREAD); + current->flags &= ~(PF_RANDOMIZE | PF_FORKNOEXEC | PF_KTHREAD); flush_thread(); current->personality &= ~bprm->per_clear; @@ -1339,13 +1341,13 @@ int remove_arg_zero(struct linux_binprm *bprm) ret = -EFAULT; goto out; } - kaddr = kmap_atomic(page, KM_USER0); + kaddr = kmap_atomic(page); for (; offset < PAGE_SIZE && kaddr[offset]; offset++, bprm->p++) ; - kunmap_atomic(kaddr, KM_USER0); + kunmap_atomic(kaddr); put_arg_page(page); if (offset == PAGE_SIZE) @@ -1402,9 +1404,10 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) */ bprm->recursion_depth = depth; if (retval >= 0) { - if (depth == 0) - ptrace_event(PTRACE_EVENT_EXEC, - old_pid); + if (depth == 0) { + trace_sched_process_exec(current, old_pid, bprm); + ptrace_event(PTRACE_EVENT_EXEC, old_pid); + } put_binfmt(fmt); allow_write_access(bprm->file); if (bprm->file) @@ -1915,7 +1918,6 @@ static int coredump_wait(int exit_code, struct core_state *core_state) { struct task_struct *tsk = current; struct mm_struct *mm = tsk->mm; - struct completion *vfork_done; int core_waiters = -EBUSY; init_completion(&core_state->startup); @@ -1927,22 +1929,9 @@ static int coredump_wait(int exit_code, struct core_state *core_state) core_waiters = zap_threads(tsk, mm, core_state, exit_code); up_write(&mm->mmap_sem); - if (unlikely(core_waiters < 0)) - goto fail; - - /* - * Make sure nobody is waiting for us to release the VM, - * otherwise we can deadlock when we wait on each other - */ - vfork_done = tsk->vfork_done; - if (vfork_done) { - tsk->vfork_done = NULL; - complete(vfork_done); - } - - if (core_waiters) + if (core_waiters > 0) wait_for_completion(&core_state->startup); -fail: + return core_waiters; } |