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Merge branch 'akpm' (Andrew's patch-bomb)

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Merge misc fixes from Andrew Morton.

* emailed from Andrew Morton <akpm@linux-foundation.org>: (4 patches)
  frv: delete incorrect task prototypes causing compile fail
  slub: missing test for partial pages flush work in flush_all()
  fs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries
  drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01
This commit is contained in:
Linus Torvalds
2012-05-18 15:56:25 -07:00
parent 30a08bf2d3 93c2d656c7
commit 73f1f5dd3e
4 changed files with 27 additions and 17 deletions
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20
fs/proc/base.c
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@@ -2162,16 +2162,16 @@ static struct dentry *proc_map_files_lookup(struct inode *dir,
goto out;
result = ERR_PTR(-EACCES);
if (lock_trace(task))
if (!ptrace_may_access(task, PTRACE_MODE_READ))
goto out_put_task;
result = ERR_PTR(-ENOENT);
if (dname_to_vma_addr(dentry, &vm_start, &vm_end))
goto out_unlock;
goto out_put_task;
mm = get_task_mm(task);
if (!mm)
goto out_unlock;
goto out_put_task;
down_read(&mm->mmap_sem);
vma = find_exact_vma(mm, vm_start, vm_end);
@@ -2183,8 +2183,6 @@ static struct dentry *proc_map_files_lookup(struct inode *dir,
out_no_vma:
up_read(&mm->mmap_sem);
mmput(mm);
out_unlock:
unlock_trace(task);
out_put_task:
put_task_struct(task);
out:
@@ -2218,7 +2216,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
goto out;
ret = -EACCES;
if (lock_trace(task))
if (!ptrace_may_access(task, PTRACE_MODE_READ))
goto out_put_task;
ret = 0;
@@ -2226,12 +2224,12 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
case 0:
ino = inode->i_ino;
if (filldir(dirent, ".", 1, 0, ino, DT_DIR) < 0)
goto out_unlock;
goto out_put_task;
filp->f_pos++;
case 1:
ino = parent_ino(dentry);
if (filldir(dirent, "..", 2, 1, ino, DT_DIR) < 0)
goto out_unlock;
goto out_put_task;
filp->f_pos++;
default:
{
@@ -2242,7 +2240,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
mm = get_task_mm(task);
if (!mm)
goto out_unlock;
goto out_put_task;
down_read(&mm->mmap_sem);
nr_files = 0;
@@ -2272,7 +2270,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
flex_array_free(fa);
up_read(&mm->mmap_sem);
mmput(mm);
goto out_unlock;
goto out_put_task;
}
for (i = 0, vma = mm->mmap, pos = 2; vma;
vma = vma->vm_next) {
@@ -2317,8 +2315,6 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
}
}
out_unlock:
unlock_trace(task);
out_put_task:
put_task_struct(task);
out: