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authorLinus Torvalds <torvalds@linux-foundation.org>2018-07-22 12:04:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-07-22 12:04:51 -0700
commit165ea0d1c2286f550efbf14dc3528267af088f08 (patch)
tree913ef8a34b31056ad13f04ec1dbb38a092974d88
parentf88a333b44318643282b8acc92af90deda441f5e (diff)
parent9ba546c01976a426292af99e682a557075d6c010 (diff)
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro: "Fix several places that screw up cleanups after failures halfway through opening a file (one open-coding filp_clone_open() and getting it wrong, two misusing alloc_file()). That part is -stable fodder from the 'work.open' branch. And Christoph's regression fix for uapi breakage in aio series; include/uapi/linux/aio_abi.h shouldn't be pulling in the kernel definition of sigset_t, the reason for doing so in the first place had been bogus - there's no need to expose struct __aio_sigset in aio_abi.h at all" * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: aio: don't expose __aio_sigset in uapi ocxlflash_getfile(): fix double-iput() on alloc_file() failures cxl_getfile(): fix double-iput() on alloc_file() failures drm_mode_create_lease_ioctl(): fix open-coded filp_clone_open()
-rw-r--r--drivers/gpu/drm/drm_lease.c16
-rw-r--r--drivers/misc/cxl/api.c8
-rw-r--r--drivers/scsi/cxlflash/ocxl_hw.c5
-rw-r--r--fs/aio.c5
-rw-r--r--fs/internal.h1
-rw-r--r--include/linux/fs.h1
-rw-r--r--include/linux/syscalls.h1
-rw-r--r--include/uapi/linux/aio_abi.h6
8 files changed, 14 insertions, 29 deletions
diff --git a/drivers/gpu/drm/drm_lease.c b/drivers/gpu/drm/drm_lease.c
index 50c73c0a20b9..d638c0fb3418 100644
--- a/drivers/gpu/drm/drm_lease.c
+++ b/drivers/gpu/drm/drm_lease.c
@@ -553,24 +553,13 @@ int drm_mode_create_lease_ioctl(struct drm_device *dev,
/* Clone the lessor file to create a new file for us */
DRM_DEBUG_LEASE("Allocating lease file\n");
- path_get(&lessor_file->f_path);
- lessee_file = alloc_file(&lessor_file->f_path,
- lessor_file->f_mode,
- fops_get(lessor_file->f_inode->i_fop));
-
+ lessee_file = filp_clone_open(lessor_file);
if (IS_ERR(lessee_file)) {
ret = PTR_ERR(lessee_file);
goto out_lessee;
}
- /* Initialize the new file for DRM */
- DRM_DEBUG_LEASE("Initializing the file with %p\n", lessee_file->f_op->open);
- ret = lessee_file->f_op->open(lessee_file->f_inode, lessee_file);
- if (ret)
- goto out_lessee_file;
-
lessee_priv = lessee_file->private_data;
-
/* Change the file to a master one */
drm_master_put(&lessee_priv->master);
lessee_priv->master = lessee;
@@ -588,9 +577,6 @@ int drm_mode_create_lease_ioctl(struct drm_device *dev,
DRM_DEBUG_LEASE("drm_mode_create_lease_ioctl succeeded\n");
return 0;
-out_lessee_file:
- fput(lessee_file);
-
out_lessee:
drm_master_put(&lessee);
diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index 753b1a698fc4..6b16946f9b05 100644
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c
@@ -103,15 +103,15 @@ static struct file *cxl_getfile(const char *name,
d_instantiate(path.dentry, inode);
file = alloc_file(&path, OPEN_FMODE(flags), fops);
- if (IS_ERR(file))
- goto err_dput;
+ if (IS_ERR(file)) {
+ path_put(&path);
+ goto err_fs;
+ }
file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
file->private_data = priv;
return file;
-err_dput:
- path_put(&path);
err_inode:
iput(inode);
err_fs:
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index 0a95b5f25380..497a68389461 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.c
+++ b/drivers/scsi/cxlflash/ocxl_hw.c
@@ -134,15 +134,14 @@ static struct file *ocxlflash_getfile(struct device *dev, const char *name,
rc = PTR_ERR(file);
dev_err(dev, "%s: alloc_file failed rc=%d\n",
__func__, rc);
- goto err5;
+ path_put(&path);
+ goto err3;
}
file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
file->private_data = priv;
out:
return file;
-err5:
- path_put(&path);
err4:
iput(inode);
err3:
diff --git a/fs/aio.c b/fs/aio.c
index 210df9da1283..27454594e37a 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1896,6 +1896,11 @@ SYSCALL_DEFINE5(io_getevents, aio_context_t, ctx_id,
return ret;
}
+struct __aio_sigset {
+ const sigset_t __user *sigmask;
+ size_t sigsetsize;
+};
+
SYSCALL_DEFINE6(io_pgetevents,
aio_context_t, ctx_id,
long, min_nr,
diff --git a/fs/internal.h b/fs/internal.h
index 980d005b21b4..5645b4ebf494 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -127,7 +127,6 @@ int do_fchownat(int dfd, const char __user *filename, uid_t user, gid_t group,
extern int open_check_o_direct(struct file *f);
extern int vfs_open(const struct path *, struct file *, const struct cred *);
-extern struct file *filp_clone_open(struct file *);
/*
* inode.c
diff --git a/include/linux/fs.h b/include/linux/fs.h
index d78d146a98da..805bf22898cf 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2420,6 +2420,7 @@ extern struct file *filp_open(const char *, int, umode_t);
extern struct file *file_open_root(struct dentry *, struct vfsmount *,
const char *, int, umode_t);
extern struct file * dentry_open(const struct path *, int, const struct cred *);
+extern struct file *filp_clone_open(struct file *);
extern int filp_close(struct file *, fl_owner_t id);
extern struct filename *getname_flags(const char __user *, int, int *);
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index a368a68cb667..5c1a0933768e 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -11,6 +11,7 @@
#ifndef _LINUX_SYSCALLS_H
#define _LINUX_SYSCALLS_H
+struct __aio_sigset;
struct epoll_event;
struct iattr;
struct inode;
diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h
index 3c5038b587ba..d4593a6062ef 100644
--- a/include/uapi/linux/aio_abi.h
+++ b/include/uapi/linux/aio_abi.h
@@ -29,7 +29,6 @@
#include <linux/types.h>
#include <linux/fs.h>
-#include <linux/signal.h>
#include <asm/byteorder.h>
typedef __kernel_ulong_t aio_context_t;
@@ -110,10 +109,5 @@ struct iocb {
#undef IFBIG
#undef IFLITTLE
-struct __aio_sigset {
- const sigset_t __user *sigmask;
- size_t sigsetsize;
-};
-
#endif /* __LINUX__AIO_ABI_H */