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Miklos Szeredi 6ccc9e1128 fuse: handle zero sized retrieve correctly 
commit 97e1532ef8 upstream.

Dereferencing req->page_descs[0] will Oops if req->max_pages is zero.

Reported-by: syzbot+c1e36d30ee3416289cc0@syzkaller.appspotmail.com
Tested-by: syzbot+c1e36d30ee3416289cc0@syzkaller.appspotmail.com
Fixes: b2430d7567 ("fuse: add per-page descriptor <offset, length> to fuse_req")
Cc: <stable@vger.kernel.org> # v3.9
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-12 19:47:24 +01:00
..
9p
v9fs_dir_readdir: fix double-free on p9stat_read error
2018-12-01 09:37:27 +01:00
adfs
adfs: use timespec64 for time conversion
2018-08-22 10:52:51 -07:00
affs
…
afs
afs: Fix validation/callback interaction
2018-12-17 09:24:40 +01:00
autofs
Merge branch 'akpm' (patches from Andrew)
2018-08-22 12:34:08 -07:00
befs
…
bfs
bfs: add sanity check at bfs_fill_super()
2018-12-01 09:37:27 +01:00
btrfs
btrfs: use tagged writepage to mitigate livelock of snapshot
2019-02-12 19:47:11 +01:00
cachefiles
fscache, cachefiles: remove redundant variable 'cache'
2018-12-17 09:24:40 +01:00
ceph
ceph: clear inode pointer when snap realm gets dropped by its inode
2019-01-31 08:14:34 +01:00
cifs
cifs: check ntwrk_buf_start for NULL before dereferencing it
2019-02-12 19:47:17 +01:00
coda
…
configfs
configfs: fix registered group removal
2018-07-17 06:14:07 -07:00
cramfs
Cramfs: fix abad comparison when wrap-arounds occur
2018-11-13 11:08:55 -08:00
crypto
crypto: speck - remove Speck
2018-11-13 11:08:46 -08:00
debugfs
…
devpts
devpts: Convert to new IDA API
2018-08-21 23:54:17 -04:00
dlm
dlm: Don't swamp the CPU with callbacks queued during recovery
2019-02-12 19:46:58 +01:00
ecryptfs
…
efivarfs
efivars: Call guid_parse() against guid_t type of variable
2018-07-22 14:13:44 +02:00
efs
…
exofs
fs/exofs: fix potential memory leak in mount option parsing
2018-11-27 16:13:00 +01:00
exportfs
exportfs: do not read dentry after free
2018-12-17 09:24:35 +01:00
ext2
ext2: fix potential use after free
2018-12-05 19:32:11 +01:00
ext4
ext4: fix special inode number checks in __ext4_iget()
2019-01-16 22:04:36 +01:00
f2fs
f2fs: fix sbi->extent_list corruption issue
2019-02-12 19:47:17 +01:00
fat
fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()
2018-10-13 09:31:03 +02:00
freevxfs
…
fscache
fscache: fix race between enablement and dropping of object
2018-12-17 09:24:40 +01:00
fuse
fuse: handle zero sized retrieve correctly
2019-02-12 19:47:24 +01:00
gfs2
gfs2: Revert "Fix loop in gfs2_rbm_find"
2019-02-06 17:30:13 +01:00
hfs
hfs: do not free node before using
2018-12-17 09:24:41 +01:00
hfsplus
hfsplus: do not free node before using
2018-12-17 09:24:41 +01:00
hostfs
vfs: discard ATTR_ATTR_FLAG
2018-08-17 16:20:28 -07:00
hpfs
hpfs: remove unnecessary checks on the value of r when assigning error code
2018-08-25 12:42:33 -07:00
hugetlbfs
mm: zero out the vma in vma_init()
2018-08-22 10:52:44 -07:00
isofs
isofs: reject hardware sector size > 2048 bytes
2018-08-21 11:37:41 +02:00
jbd2
jbd2: fix use after free in jbd2_log_do_checkpoint()
2018-11-13 11:08:43 -08:00
jffs2
jffs2: Fix use of uninitialized delayed_work, lockdep breakage
2019-01-26 09:32:37 +01:00
jfs
Merge tag 'jfs-4.19' of git://github.com/kleikamp/linux-shaggy
2018-08-15 22:47:23 -07:00
kernfs
Merge tag 'driver-core-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2018-08-18 11:44:53 -07:00
lockd
lockd: Show pid of lockd for remote locks
2019-01-13 09:51:08 +01:00
minix
…
nfs
NFS: nfs_compare_mount_options always compare auth flavors.
2019-02-12 19:47:16 +01:00
nfs_common
…
nfsd
nfsd4: fix crash on writing v4_end_grace before nfsd startup
2019-02-12 19:47:03 +01:00
nilfs2
nilfs2: convert to SPDX license tags
2018-09-04 16:45:02 -07:00
nls
…
notify
inotify: Fix fd refcount leak in inotify_add_watch().
2019-01-31 08:14:34 +01:00
ntfs
ntfs: mft: remove VLA usage
2018-08-17 16:20:27 -07:00
ocfs2
ocfs2: improve ocfs2 Makefile
2019-02-12 19:47:18 +01:00
omfs
…
openpromfs
…
orangefs
orangefs: remove redundant pointer orangefs_inode
2018-08-14 12:07:14 -04:00
overlayfs
ovl: fix missing override creds in link of a metacopy upper
2018-12-19 19:19:51 +01:00
proc
proc/sysctl: don't return ENOMEM on lookup when a table is unregistering
2018-12-29 13:37:59 +01:00
pstore
pstore/ram: Do not treat empty buffers as valid
2019-01-26 09:32:37 +01:00
qnx4
…
qnx6
…
quota
quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls.
2019-01-26 09:32:42 +01:00
ramfs
…
reiserfs
reiserfs: propagate errors from fill_with_dentries() properly
2018-11-27 16:12:59 +01:00
romfs
…
squashfs
Squashfs: Compute expected length from inode size rather than block length
2018-08-02 09:34:02 -07:00
sysfs
Merge tag 'driver-core-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2018-08-18 11:44:53 -07:00
sysv
sysv: return 'err' instead of 0 in __sysv_write_inode
2018-12-17 09:24:30 +01:00
tracefs
tracefs: Annotate tracefs_ops with __ro_after_init
2018-07-31 11:32:44 -04:00
ubifs
ubifs: Handle re-linking of inodes correctly while recovery
2018-12-29 13:37:55 +01:00
udf
udf: Fix BUG on corrupted inode
2019-02-12 19:47:09 +01:00
ufs
fs/ufs: use ktime_get_real_seconds for sb and cg timestamps
2018-08-17 16:20:27 -07:00
xfs
xfs: eof trim writeback mapping as soon as it is cached
2019-02-12 19:47:23 +01:00
aio.c
aio: fix spectre gadget in lookup_ioctx
2018-12-19 19:19:50 +01:00
anon_inodes.c
anon_inode_getfile(): switch to alloc_file_pseudo()
2018-07-12 10:04:27 -04:00
attr.c
…
bad_inode.c
get rid of 'opened' argument of ->atomic_open() - part 3
2018-07-12 10:04:20 -04:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
…
binfmt_elf.c
Merge tag 'mips_4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
2018-08-13 19:24:32 -07:00
binfmt_em86.c
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binfmt_flat.c
…
binfmt_misc.c
…
binfmt_script.c
exec: load_script: don't blindly truncate shebang string
2019-02-12 19:47:20 +01:00
block_dev.c
blockdev: Fix livelocks on loop device
2019-01-22 21:40:36 +01:00
buffer.c
notifier: Remove notifier header file wherever not used
2018-08-30 12:56:40 +02:00
char_dev.c
…
compat_binfmt_elf.c
…
compat_ioctl.c
media: dvb/audio.h: get rid of unused APIs
2018-07-30 16:21:49 -04:00
compat.c
…
coredump.c
…
d_path.c
…
dax.c
dax: Use non-exclusive wait in wait_entry_unlocked()
2019-01-09 17:38:46 +01:00
dcache.c
fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb()
2019-02-06 17:30:11 +01:00
dcookies.c
…
direct-io.c
fs: fix lost error code in dio_complete
2018-12-05 19:32:08 +01:00
drop_caches.c
…
eventfd.c
…
eventpoll.c
fs/epoll: drop ovflist branch prediction
2019-02-12 19:47:19 +01:00
exec.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-08-21 13:47:29 -07:00
fcntl.c
signal: Don't send signals to tasks that don't exist
2018-08-15 23:03:20 -05:00
fhandle.c
…
file_table.c
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-08-21 18:19:09 -07:00
file.c
…
filesystems.c
…
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
…
inode.c
mm: don't reclaim inodes with many attached pages
2018-11-21 09:19:25 +01:00
internal.h
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-08-21 18:19:09 -07:00
ioctl.c
vfs: fix FIGETBSZ ioctl on an overlayfs file
2018-11-21 09:19:14 +01:00
iomap.c
iomap: don't search past page end in iomap_is_partially_uptodate
2019-01-26 09:32:43 +01:00
Kconfig
…
Kconfig.binfmt
kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt
2018-08-02 08:06:55 +09:00
libfs.c
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locks.c
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-08-21 18:19:09 -07:00
Makefile
…
mbcache.c
…
mount.h
…
mpage.c
mpage: mpage_readpages() should submit IO as read-ahead
2018-08-17 16:20:29 -07:00
namei.c
Revert "vfs: Allow userns root to call mknod on owned filesystems."
2018-12-29 13:37:54 +01:00
namespace.c
mnt: fix __detach_mounts infinite loop
2018-11-21 09:19:22 +01:00
no-block.c
…
nsfs.c
…
open.c
Merge tag 'ovl-update-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
2018-08-21 18:19:09 -07:00
pipe.c
Merge branch 'work.open3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-08-13 19:58:36 -07:00
pnode.c
…
pnode.h
…
posix_acl.c
…
proc_namespace.c
…
read_write.c
vfs: swap names of {do,vfs}_clone_file_range()
2018-09-24 10:54:01 +02:00
readdir.c
…
select.c
…
seq_file.c
fs/seq_file.c: simplify seq_file iteration code and interface
2018-08-17 16:20:28 -07:00
signalfd.c
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splice.c
…
stack.c
…
stat.c
…
statfs.c
…
super.c
Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax
2018-08-26 11:48:42 -07:00
sync.c
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timerfd.c
Merge branch 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-08-13 20:56:23 -07:00
userfaultfd.c
userfaultfd: clear flag if remap event not enabled
2019-01-26 09:32:43 +01:00
utimes.c
…
xattr.c
sysfs: Do not return POSIX ACL xattrs via listxattr
2018-09-18 07:30:48 -04:00