Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:
 "VM:
   - z3fold fixes and enhancements by Henry Burns and Vitaly Wool

   - more accurate reclaimed slab caches calculations by Yafang Shao

   - fix MAP_UNINITIALIZED UAPI symbol to not depend on config, by
     Christoph Hellwig

   - !CONFIG_MMU fixes by Christoph Hellwig

   - new novmcoredd parameter to omit device dumps from vmcore, by
     Kairui Song

   - new test_meminit module for testing heap and pagealloc
     initialization, by Alexander Potapenko

   - ioremap improvements for huge mappings, by Anshuman Khandual

   - generalize kprobe page fault handling, by Anshuman Khandual

   - device-dax hotplug fixes and improvements, by Pavel Tatashin

   - enable synchronous DAX fault on powerpc, by Aneesh Kumar K.V

   - add pte_devmap() support for arm64, by Robin Murphy

   - unify locked_vm accounting with a helper, by Daniel Jordan

   - several misc fixes

  core/lib:
   - new typeof_member() macro including some users, by Alexey Dobriyan

   - make BIT() and GENMASK() available in asm, by Masahiro Yamada

   - changed LIST_POISON2 on x86_64 to 0xdead000000000122 for better
     code generation, by Alexey Dobriyan

   - rbtree code size optimizations, by Michel Lespinasse

   - convert struct pid count to refcount_t, by Joel Fernandes

  get_maintainer.pl:
   - add --no-moderated switch to skip moderated ML's, by Joe Perches

  misc:
   - ptrace PTRACE_GET_SYSCALL_INFO interface

   - coda updates

   - gdb scripts, various"

[ Using merge message suggestion from Vlastimil Babka, with some editing - Linus ]

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (100 commits)
  fs/select.c: use struct_size() in kmalloc()
  mm: add account_locked_vm utility function
  arm64: mm: implement pte_devmap support
  mm: introduce ARCH_HAS_PTE_DEVMAP
  mm: clean up is_device_*_page() definitions
  mm/mmap: move common defines to mman-common.h
  mm: move MAP_SYNC to asm-generic/mman-common.h
  device-dax: "Hotremove" persistent memory that is used like normal RAM
  mm/hotplug: make remove_memory() interface usable
  device-dax: fix memory and resource leak if hotplug fails
  include/linux/lz4.h: fix spelling and copy-paste errors in documentation
  ipc/mqueue.c: only perform resource calculation if user valid
  include/asm-generic/bug.h: fix "cut here" for WARN_ON for __WARN_TAINT architectures
  scripts/gdb: add helpers to find and list devices
  scripts/gdb: add lx-genpd-summary command
  drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl
  kernel/pid.c: convert struct pid count to refcount_t
  drivers/rapidio/devices/rio_mport_cdev.c: NUL terminate some strings
  select: shift restore_saved_sigmask_unless() into poll_select_copy_remaining()
  select: change do_poll() to return -ERESTARTNOHAND rather than -EINTR
  ...

1 files changed, 23 insertions, 13 deletions

diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c
index 0ceef32e6fae..240669f51eac 100644
--- a/fs/coda/psdev.c
+++ b/fs/coda/psdev.c
@@ -38,8 +38,7 @@
 #include <linux/uaccess.h>
 
 #include <linux/coda.h>
-#include <linux/coda_psdev.h>
-
+#include "coda_psdev.h"
 #include "coda_linux.h"
 
 #include "coda_int.h"
@@ -100,8 +99,12 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
 	ssize_t retval = 0, count = 0;
 	int error;
 
+	/* make sure there is enough to copy out the (opcode, unique) values */
+	if (nbytes < (2 * sizeof(u_int32_t)))
+		return -EINVAL;
+
         /* Peek at the opcode, uniquefier */
-	if (copy_from_user(&hdr, buf, 2 * sizeof(u_long)))
+	if (copy_from_user(&hdr, buf, 2 * sizeof(u_int32_t)))
 	        return -EFAULT;
 
         if (DOWNCALL(hdr.opcode)) {
@@ -119,17 +122,21 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
 				hdr.opcode, hdr.unique);
 		        nbytes = size;
 		}
-		CODA_ALLOC(dcbuf, union outputArgs *, nbytes);
+		dcbuf = kvmalloc(nbytes, GFP_KERNEL);
+		if (!dcbuf) {
+			retval = -ENOMEM;
+			goto out;
+		}
 		if (copy_from_user(dcbuf, buf, nbytes)) {
-			CODA_FREE(dcbuf, nbytes);
+			kvfree(dcbuf);
 			retval = -EFAULT;
 			goto out;
 		}
 
 		/* what downcall errors does Venus handle ? */
-		error = coda_downcall(vcp, hdr.opcode, dcbuf);
+		error = coda_downcall(vcp, hdr.opcode, dcbuf, nbytes);
 
-		CODA_FREE(dcbuf, nbytes);
+		kvfree(dcbuf);
 		if (error) {
 			pr_warn("%s: coda_downcall error: %d\n",
 				__func__, error);
@@ -182,8 +189,11 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf,
 	if (req->uc_opcode == CODA_OPEN_BY_FD) {
 		struct coda_open_by_fd_out *outp =
 			(struct coda_open_by_fd_out *)req->uc_data;
-		if (!outp->oh.result)
+		if (!outp->oh.result) {
 			outp->fh = fget(outp->fd);
+			if (!outp->fh)
+				return -EBADF;
+		}
 	}
 
         wake_up(&req->uc_sleep);
@@ -252,7 +262,7 @@ static ssize_t coda_psdev_read(struct file * file, char __user * buf,
 		goto out;
 	}
 
-	CODA_FREE(req->uc_data, sizeof(struct coda_in_hdr));
+	kvfree(req->uc_data);
 	kfree(req);
 out:
 	mutex_unlock(&vcp->vc_mutex);
@@ -314,7 +324,7 @@ static int coda_psdev_release(struct inode * inode, struct file * file)
 
 		/* Async requests need to be freed here */
 		if (req->uc_flags & CODA_REQ_ASYNC) {
-			CODA_FREE(req->uc_data, sizeof(struct coda_in_hdr));
+			kvfree(req->uc_data);
 			kfree(req);
 			continue;
 		}
@@ -347,13 +357,13 @@ static const struct file_operations coda_psdev_fops = {
 	.llseek		= noop_llseek,
 };
 
-static int init_coda_psdev(void)
+static int __init init_coda_psdev(void)
 {
 	int i, err = 0;
 	if (register_chrdev(CODA_PSDEV_MAJOR, "coda", &coda_psdev_fops)) {
 		pr_err("%s: unable to get major %d\n",
 		       __func__, CODA_PSDEV_MAJOR);
-              return -EIO;
+		return -EIO;
 	}
 	coda_psdev_class = class_create(THIS_MODULE, "coda");
 	if (IS_ERR(coda_psdev_class)) {
@@ -378,7 +388,7 @@ MODULE_AUTHOR("Jan Harkes, Peter J. Braam");
 MODULE_DESCRIPTION("Coda Distributed File System VFS interface");
 MODULE_ALIAS_CHARDEV_MAJOR(CODA_PSDEV_MAJOR);
 MODULE_LICENSE("GPL");
-MODULE_VERSION("6.6");
+MODULE_VERSION("7.0");
 
 static int __init init_coda(void)
 {