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-rw-r--r--fs/exec.c47
1 files changed, 18 insertions, 29 deletions
diff --git a/fs/exec.c b/fs/exec.c
index cfd5e3047bd8..9a1d9f0a60ab 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;
}