Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:

 - kasan updates

 - procfs

 - lib/bitmap updates

 - other lib/ updates

 - checkpatch tweaks

 - rapidio

 - ubsan

 - pipe fixes and cleanups

 - lots of other misc bits

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (114 commits)
  Documentation/sysctl/user.txt: fix typo
  MAINTAINERS: update ARM/QUALCOMM SUPPORT patterns
  MAINTAINERS: update various PALM patterns
  MAINTAINERS: update "ARM/OXNAS platform support" patterns
  MAINTAINERS: update Cortina/Gemini patterns
  MAINTAINERS: remove ARM/CLKDEV SUPPORT file pattern
  MAINTAINERS: remove ANDROID ION pattern
  mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors
  mm: docs: fix parameter names mismatch
  mm: docs: fixup punctuation
  pipe: read buffer limits atomically
  pipe: simplify round_pipe_size()
  pipe: reject F_SETPIPE_SZ with size over UINT_MAX
  pipe: fix off-by-one error when checking buffer limits
  pipe: actually allow root to exceed the pipe buffer limits
  pipe, sysctl: remove pipe_proc_fn()
  pipe, sysctl: drop 'min' parameter from pipe-max-size converter
  kasan: rework Kconfig settings
  crash_dump: is_kdump_kernel can be boolean
  kernel/mutex: mutex_is_locked can be boolean
  ...

1 files changed, 5 insertions, 4 deletions

diff --git a/fs/proc/self.c b/fs/proc/self.c
index 31326bb23b8b..4d7d061696b3 100644
--- a/fs/proc/self.c
+++ b/fs/proc/self.c
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
+#include <linux/cache.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/pid_namespace.h>
@@ -17,11 +18,11 @@ static const char *proc_self_get_link(struct dentry *dentry,
 
         if (!tgid)
                 return ERR_PTR(-ENOENT);
-        /* 11 for max length of signed int in decimal + NULL term */
-        name = kmalloc(12, dentry ? GFP_KERNEL : GFP_ATOMIC);
+        /* max length of unsigned int in decimal + NULL term */
+        name = kmalloc(10 + 1, dentry ? GFP_KERNEL : GFP_ATOMIC);
         if (unlikely(!name))
                 return dentry ? ERR_PTR(-ENOMEM) : ERR_PTR(-ECHILD);
-        sprintf(name, "%d", tgid);
+        sprintf(name, "%u", tgid);
         set_delayed_call(done, kfree_link, name);
         return name;
 }
@@ -30,7 +31,7 @@ static const struct inode_operations proc_self_inode_operations = {
         .get_link       = proc_self_get_link,
 };
 
-static unsigned self_inum;
+static unsigned self_inum __ro_after_init;
 
 int proc_setup_self(struct super_block *s)
 {