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Andreas Gruenbacher f3b538493e direct-io: Prevent NULL pointer access in submit_page_section 
commit 899f0429c7d3eed886406cd72182bee3b96aa1f9 upstream.

In the code added to function submit_page_section by commit b1058b981,
sdio->bio can currently be NULL when calling dio_bio_submit.  This then
leads to a NULL pointer access in dio_bio_submit, so check for a NULL
bio in submit_page_section before trying to submit it instead.

Fixes xfstest generic/250 on gfs2.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-18 09:20:42 +02:00
..
9p
9p: fix a potential acl leak
2017-05-14 13:32:54 +02:00
adfs
fs/adfs: remove unneeded cast
2015-06-30 19:44:57 -07:00
affs
affs: fix remount failure when there are no options changed
2016-06-07 18:14:32 -07:00
afs
…
autofs4
autofs: sanity check status reported with AUTOFS_DEV_IOCTL_FAIL
2017-06-29 12:48:50 +02:00
befs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-07-04 19:36:06 -07:00
bfs
…
btrfs
btrfs: prevent to set invalid default subvolid
2017-10-05 09:41:47 +02:00
cachefiles
FS-Cache: Add missing initialization of ret in cachefiles_write_page()
2015-11-16 20:38:43 -05:00
ceph
ceph: fix readpage from fscache
2017-09-07 08:34:09 +02:00
cifs
CIFS: Reconnect expired SMB sessions
2017-10-18 09:20:40 +02:00
coda
fs/coda: fix readlink buffer overflow
2015-09-10 13:29:01 -07:00
configfs
configfs: Fix race between create_link and configfs_rmdir
2017-06-26 07:13:08 +02:00
cramfs
…
debugfs
dentry name snapshots
2017-08-06 19:19:42 -07:00
devpts
devpts: clean up interface to pty drivers
2016-08-16 09:30:49 +02:00
dlm
dlm: avoid double-free on error path in dlm_device_{register,unregister}
2017-09-13 14:09:45 -07:00
ecryptfs
ecryptfs: fix handling of directory opening
2016-09-15 08:27:47 +02:00
efivarfs
efi: Make efivarfs entries immutable by default
2016-03-03 15:07:09 -08:00
efs
…
exofs
osd fs: __r4w_get_page rely on PageUptodate for uptodate
2015-12-12 10:15:34 -08:00
exportfs
…
ext2
posix_acl: Clear SGID bit when setting file permissions
2016-10-31 04:13:58 -06:00
ext4
ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
2017-10-18 09:20:40 +02:00
f2fs
f2fs: check hot_data for roll-forward recovery
2017-09-27 11:00:12 +02:00
fat
fat: fix using uninitialized fields of fat_inode/fsinfo_inode
2017-03-15 09:57:15 +08:00
freevxfs
freevxfs: Grammar s/an negative/a negative/
2015-08-07 13:59:24 +02:00
fscache
FS-Cache: Initialise stores_lock in netfs cookie
2017-06-17 06:39:37 +02:00
fuse
fuse: initialize the flock flag in fuse_file on allocation
2017-08-16 13:40:28 -07:00
gfs2
GFS2: Fix reference to ERR_PTR in gfs2_glock_iter_next
2017-10-08 10:14:16 +02:00
hfs
hfs: fix B-tree corruption after insertion at position 0
2015-09-10 13:29:01 -07:00
hfsplus
posix_acl: Clear SGID bit when setting file permissions
2016-10-31 04:13:58 -06:00
hostfs
hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
2016-09-30 10:18:39 +02:00
hpfs
hpfs: implement the show_options method
2016-06-01 12:15:54 -07:00
hugetlbfs
mm: larger stack guard gap, between vmas
2017-06-26 07:13:11 +02:00
isofs
isofs: Do not return EACCES for unknown filesystems
2016-10-28 03:01:34 -04:00
jbd2
jbd2: don't leak modified metadata buffers on an aborted journal
2017-03-12 06:37:26 +01:00
jffs2
posix_acl: Clear SGID bit when setting file permissions
2016-10-31 04:13:58 -06:00
jfs
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
kernfs
kernfs: don't depend on d_find_any_alias() when generating notifications
2016-09-24 10:07:36 +02:00
lockd
Mainly smaller bugfixes and cleanup. We're still finding some bugs from
2015-11-11 20:11:28 -08:00
logfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
minix
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-07-04 19:36:06 -07:00
ncpfs
ncpfs: fix a braino in OOM handling in ncp_fill_cache()
2016-03-16 08:42:59 -07:00
nfs
NFS: Fix 2 use after free issues in the I/O code
2017-09-13 14:09:46 -07:00
nfs_common
lockd: NLM grace period shouldn't block NFSv4 opens
2015-08-13 10:22:06 -04:00
nfsd
nfsd: Fix general protection fault in release_lock_stateid()
2017-09-27 11:00:12 +02:00
nilfs2
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
nls
…
notify
dentry name snapshots
2017-08-06 19:19:42 -07:00
ntfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
ocfs2
ocfs2: o2hb: revert hb threshold to keep compatible
2017-07-05 14:37:22 +02:00
omfs
…
openpromfs
…
overlayfs
ovl: fsync after copy-up
2016-11-10 16:36:34 +01:00
proc
mm: larger stack guard gap, between vmas
2017-06-26 07:13:11 +02:00
pstore
pstore: Use dynamic spinlock initializer
2017-08-06 19:19:43 -07:00
qnx4
…
qnx6
…
quota
quota: Fix possible GPF due to uninitialised pointers
2016-04-12 09:08:56 -07:00
ramfs
mm, fs: obey gfp_mapping for add_to_page_cache()
2015-10-16 11:42:28 -07:00
reiserfs
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
romfs
romfs: use different way to generate fsid for BLOCK or MTD
2017-06-17 06:39:38 +02:00
squashfs
squashfs: xattr simplifications
2015-11-13 20:34:33 -05:00
sysfs
sysfs: be careful of error returns from ops->show()
2017-04-12 12:38:33 +02:00
sysv
fix sysvfs symlinks
2015-11-23 21:11:08 -05:00
tracefs
tracefs: Fix refcount imbalance in start_creating()
2015-11-04 22:13:45 -05:00
ubifs
ubifs: Fix journal replay wrt. xattr nodes
2017-01-26 08:23:48 +01:00
udf
udf: Fix deadlock between writeback and udf_setsize()
2017-07-27 15:06:09 -07:00
ufs
ufs_getfrag_block(): we only grab ->truncate_mutex on block creation path
2017-06-14 13:16:24 +02:00
xfs
xfs: remove kmem_zalloc_greedy
2017-10-08 10:14:20 +02:00
aio.c
aio: mark AIO pseudo-fs noexec
2016-10-07 15:23:47 +02:00
anon_inodes.c
…
attr.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
libnvdimm for 4.4:
2015-11-10 12:07:22 -08:00
binfmt_elf.c
binfmt_elf: use ELF_ET_DYN_BASE only for PIE
2017-07-21 07:44:57 +02:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
…
binfmt_script.c
…
block_dev.c
fs/block_dev: always invalidate cleancache in invalidate_bdev()
2017-05-20 14:27:01 +02:00
buffer.c
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
char_dev.c
fs/char_dev.c: fix incorrect documentation for unregister_chrdev_region
2015-08-05 13:49:35 -07:00
compat_binfmt_elf.c
…
compat_ioctl.c
i2c-dev: Fix typo in ioctl name reference
2015-10-23 23:26:43 +02:00
compat.c
…
coredump.c
coredump: Ensure proper size of sparse core files
2017-07-05 14:37:20 +02:00
dax.c
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
dcache.c
dentry name snapshots
2017-08-06 19:19:42 -07:00
dcookies.c
…
direct-io.c
direct-io: Prevent NULL pointer access in submit_page_section
2017-10-18 09:20:42 +02:00
drop_caches.c
inode: convert inode_sb_list_lock to per-sb
2015-08-17 18:39:46 -04:00
eventfd.c
…
eventpoll.c
epoll: fix race between ep_poll_callback(POLLFREE) and ep_free()/ep_remove()
2017-09-07 08:34:10 +02:00
exec.c
exec: Limit arg stack to at most 75% of _STK_LIM
2017-07-21 07:44:57 +02:00
fcntl.c
fs: add a VALID_OPEN_FLAGS
2017-07-15 11:57:44 +02:00
fhandle.c
fs/coredump: prevent fsuid=0 dumps into user-controlled directories
2016-04-12 09:08:58 -07:00
file_table.c
fs, file table: reinit files_stat.max_files after deferred memory initialisation
2015-08-07 04:39:40 +03:00
file.c
vfs: clear remainder of 'full_fds_bits' in dup_fd()
2015-11-05 23:05:32 -08:00
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
writeback, cgroup: fix use of the wrong bdi_writeback which mismatches the inode
2016-04-12 09:09:04 -07:00
inode.c
vfs: fix deadlock in file_remove_privs() on overlayfs
2016-08-10 11:49:30 +02:00
internal.h
inode: rename i_wb_list to i_io_list
2015-08-17 23:38:10 -04:00
ioctl.c
…
Kconfig
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
Kconfig.binfmt
…
libfs.c
fs: Set the size of empty dirs to 0.
2015-08-12 15:28:45 -05:00
locks.c
locks: use file_inode()
2016-08-10 11:49:27 +02:00
Makefile
ext4: promote ext4 over ext2 in the default probe order
2015-10-15 10:33:21 -04:00
mbcache.c
…
mount.h
mnt: In propgate_umount handle visiting mounts in any order
2017-07-21 07:44:57 +02:00
mpage.c
fs: add i_blocksize()
2017-06-14 13:16:24 +02:00
namei.c
dentry name snapshots
2017-08-06 19:19:42 -07:00
namespace.c
mnt: In propgate_umount handle visiting mounts in any order
2017-07-21 07:44:57 +02:00
no-block.c
…
nsfs.c
fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void
2015-09-11 15:21:34 -07:00
open.c
fs: completely ignore unknown open flags
2017-07-15 11:57:44 +02:00
pipe.c
pipe: limit the per-user amount of pages allocated in pipes
2016-06-07 18:14:35 -07:00
pnode.c
mnt: Make propagate_umount less slow for overlapping mount propagation trees
2017-07-21 07:44:58 +02:00
pnode.h
mnt: Add a per mount namespace limit on the number of mounts
2017-04-30 05:49:28 +02:00
posix_acl.c
tmpfs: clear S_ISGID when setting posix ACLs
2017-01-26 08:23:47 +01:00
proc_namespace.c
vfs: show_vfsstat: do not ignore errors from show_devname method
2016-04-12 09:08:55 -07:00
read_write.c
vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets
2017-10-05 09:41:45 +02:00
readdir.c
…
select.c
…
seq_file.c
Make file credentials available to the seqfile interfaces
2017-08-06 19:19:42 -07:00
signalfd.c
signalfd: fix information leak in signalfd_copyinfo
2015-08-07 04:39:40 +03:00
splice.c
vfs: fix uninitialized flags in splice_to_pipe()
2017-02-23 17:43:09 +01:00
stack.c
…
stat.c
ufs: restore maintaining ->i_blocks
2017-06-14 13:16:24 +02:00
statfs.c
…
super.c
fs/super.c: fix race between freeze_super() and thaw_super()
2016-10-28 03:01:32 -04:00
sync.c
fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback
2015-11-06 17:50:42 -08:00
timerfd.c
timerfd: Protect the might cancel mechanism proper
2017-05-08 07:46:01 +02:00
userfaultfd.c
userfaultfd: don't block on the last VM updates at exit time
2016-03-16 08:43:01 -07:00
utimes.c
vfs: move permission checking into notify_change() for utimes(NULL)
2016-10-22 12:26:56 +02:00
xattr.c
lsm: fix smack_inode_removexattr and xattr_getsecurity memleak
2017-10-12 11:27:32 +02:00