diff options
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/fs/exec.c b/fs/exec.c index 6075a1e727a..d9576f26181 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -963,9 +963,18 @@ static int de_thread(struct task_struct *tsk) leader->group_leader = tsk; tsk->exit_signal = SIGCHLD; + leader->exit_signal = -1; BUG_ON(leader->exit_state != EXIT_ZOMBIE); leader->exit_state = EXIT_DEAD; + + /* + * We are going to release_task()->ptrace_unlink() silently, + * the tracer can sleep in do_wait(). EXIT_DEAD guarantees + * the tracer wont't block again waiting for this thread. + */ + if (unlikely(leader->ptrace)) + __wake_up_parent(leader, leader->parent); write_unlock_irq(&tasklist_lock); release_task(leader); @@ -1225,7 +1234,12 @@ int check_unsafe_exec(struct linux_binprm *bprm) unsigned n_fs; int res = 0; - bprm->unsafe = tracehook_unsafe_exec(p); + if (p->ptrace) { + if (p->ptrace & PT_PTRACE_CAP) + bprm->unsafe |= LSM_UNSAFE_PTRACE_CAP; + else + bprm->unsafe |= LSM_UNSAFE_PTRACE; + } n_fs = 1; spin_lock(&p->fs->lock); @@ -1353,6 +1367,7 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) unsigned int depth = bprm->recursion_depth; int try,retval; struct linux_binfmt *fmt; + pid_t old_pid; retval = security_bprm_check(bprm); if (retval) @@ -1362,6 +1377,11 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) if (retval) return retval; + /* Need to fetch pid before load_binary changes it */ + rcu_read_lock(); + old_pid = task_pid_nr_ns(current, task_active_pid_ns(current->parent)); + rcu_read_unlock(); + retval = -ENOENT; for (try=0; try<2; try++) { read_lock(&binfmt_lock); @@ -1381,7 +1401,8 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) bprm->recursion_depth = depth; if (retval >= 0) { if (depth == 0) - tracehook_report_exec(fmt, bprm, regs); + ptrace_event(PTRACE_EVENT_EXEC, + old_pid); put_binfmt(fmt); allow_write_access(bprm->file); if (bprm->file) @@ -1769,7 +1790,7 @@ static int zap_process(struct task_struct *start, int exit_code) t = start; do { - task_clear_group_stop_pending(t); + task_clear_jobctl_pending(t, JOBCTL_PENDING_MASK); if (t != current && t->mm) { sigaddset(&t->pending.signal, SIGKILL); signal_wake_up(t, 1); |