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05883eee85
linux/fs
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Al Viro 05883eee85 do_move_mount(): fix an unsafe use of is_anon_ns() 
What triggers it is a race between mount --move and umount -l
of the source; we should reject it (the source is parentless *and*
not the root of anon namespace at that), but the check for namespace
being an anon one is broken in that case - is_anon_ns() needs
ns to be non-NULL.  Better fixed here than in is_anon_ns(), since
the rest of the callers is guaranteed to get a non-NULL argument...

Reported-by: syzbot+494c7ddf66acac0ad747@syzkaller.appspotmail.com
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-05-09 02:32:50 -04:00
..
9p 9p: switch to ->free_inode() 2019-05-01 22:43:23 -04:00
adfs Wimplicit-fallthrough patches for 5.2-rc1 2019-05-07 12:48:10 -07:00
affs Wimplicit-fallthrough patches for 5.2-rc1 2019-05-07 12:48:10 -07:00
afs AFS Development 2019-05-07 20:51:58 -07:00
autofs autofs: fix use-after-free in lockless ->d_manage() 2019-04-09 19:18:19 -04:00
befs befs: switch to ->free_inode() 2019-05-01 22:43:23 -04:00
bfs bfs: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
btrfs for-5.2/block-20190507 2019-05-07 18:14:36 -07:00
cachefiles fscache, cachefiles: remove redundant variable 'cache' 2018-11-30 16:00:58 +00:00
ceph Wimplicit-fallthrough patches for 5.2-rc1 2019-05-07 12:48:10 -07:00
cifs Merge branch 'work.icache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 10:57:05 -07:00
coda coda: switch to ->free_inode() 2019-05-01 22:43:26 -04:00
configfs fs: mark expected switch fall-throughs 2019-04-08 18:21:02 -05:00
cramfs
crypto Clean up fscrypt's dcache revalidation support, and other 2019-05-07 21:28:04 -07:00
debugfs Merge branch 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:03:32 -07:00
devpts fs/devpts: always delete dcache dentry-s in dput() 2019-01-24 13:38:30 -05:00
dlm genetlink: optionally validate strictly/dumps 2019-04-27 17:07:22 -04:00
ecryptfs Merge branch 'work.icache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 10:57:05 -07:00
efivarfs
efs efs: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
exportfs exportfs: do not read dentry after free 2018-11-23 09:08:17 -05:00
ext2 ext2: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
ext4 Clean up fscrypt's dcache revalidation support, and other 2019-05-07 21:28:04 -07:00
f2fs Clean up fscrypt's dcache revalidation support, and other 2019-05-07 21:28:04 -07:00
fat fat: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
freevxfs freevxfs: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
fscache fscache: fix race between enablement and dropping of object 2018-11-30 15:57:31 +00:00
fuse Merge branch 'work.icache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 10:57:05 -07:00
gfs2 for-5.2/block-20190507 2019-05-07 18:14:36 -07:00
hfs hfs: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
hfsplus hfsplus: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
hostfs hostfs: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
hpfs hpfs: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
hugetlbfs hugetlb: make use of ->free_inode() 2019-05-01 22:43:27 -04:00
isofs isofs: switch to ->free_inode() 2019-05-01 22:43:24 -04:00
jbd2 jbd2: check superblock mapped prior to committing 2019-04-06 18:57:40 -04:00
jffs2 Wimplicit-fallthrough patches for 5.2-rc1 2019-05-07 12:48:10 -07:00
jfs Several minor jfs fixes 2019-05-07 11:37:27 -07:00
kernfs Merge branch 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:03:32 -07:00
lockd NFS: fix mount/umount race in nlmclnt. 2019-03-18 22:39:34 -04:00
minix minix: switch to ->free_inode() 2019-05-01 22:43:25 -04:00
nfs for-5.2/block-20190507 2019-05-07 18:14:36 -07:00
nfs_common
nfsd Wimplicit-fallthrough patches for 5.2-rc1 2019-05-07 12:48:10 -07:00
nilfs2 nilfs2: switch to ->free_inode() 2019-05-01 22:43:25 -04:00
nls
notify Merge branch 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:03:32 -07:00
ntfs ntfs: switch to ->free_inode() 2019-05-01 22:43:26 -04:00
ocfs2 for-5.2/block-20190507 2019-05-07 18:14:36 -07:00
omfs
openpromfs openpromfs: switch to ->free_inode() 2019-05-01 22:43:25 -04:00
orangefs orangefs: make use of ->free_inode() 2019-05-01 22:43:27 -04:00
overlayfs Merge branch 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:03:32 -07:00
proc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
pstore treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
qnx4 qnx4: switch to ->free_inode() 2019-05-01 22:43:25 -04:00
qnx6 qnx6: switch to ->free_inode() 2019-05-01 22:43:25 -04:00
quota quota: Lock s_umount in exclusive mode for Q_XQUOTA{ON,OFF} quotactls. 2018-12-18 18:29:15 +01:00
ramfs
reiserfs reiserfs: convert to ->free_inode() 2019-05-01 22:43:25 -04:00
romfs romfs: convert to ->free_inode() 2019-05-01 22:43:25 -04:00
squashfs squashfs: switch to ->free_inode() 2019-05-01 22:43:25 -04:00
sysfs Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-16 10:31:02 -07:00
sysv Merge branch 'work.dcache' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:03:32 -07:00
tracefs
ubifs Clean up fscrypt's dcache revalidation support, and other 2019-05-07 21:28:04 -07:00
udf udf: switch to ->free_inode() 2019-05-01 22:43:25 -04:00
ufs Wimplicit-fallthrough patches for 5.2-rc1 2019-05-07 12:48:10 -07:00
unicode unicode: refactor the rule for regenerating utf8data.h 2019-04-28 13:45:36 -04:00
xfs for-5.2/block-20190507 2019-05-07 18:14:36 -07:00
aio.c aio: use kmem_cache_free() instead of kfree() 2019-04-04 20:13:59 -04:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c a.out: remove core dumping support 2019-03-05 10:00:35 -08:00
binfmt_elf_fdpic.c
binfmt_elf.c fs/binfmt_elf.c: spread const a little 2019-03-07 18:32:01 -08:00
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c exec: load_script: Do not exec truncated interpreter path 2019-02-18 16:49:36 -08:00
block_dev.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:50:27 -07:00
buffer.c iomap: Fix use-after-free error in page_done callback 2019-05-01 07:47:37 -07:00
char_dev.c chardev: update comment based on the code 2019-04-02 17:49:58 +02:00
compat_binfmt_elf.c
compat_ioctl.c
compat.c
coredump.c
d_path.c
dax.c fs/dax: Deposit pagetable even when installing zero page 2019-03-13 13:58:46 -07:00
dcache.c Clean up fscrypt's dcache revalidation support, and other 2019-05-07 21:28:04 -07:00
dcookies.c
direct-io.c block: remove the i argument to bio_for_each_segment_all 2019-04-30 09:26:13 -06:00
drop_caches.c fs/drop_caches.c: avoid softlockups in drop_pagecache_sb() 2019-02-01 15:46:24 -08:00
eventfd.c
eventpoll.c epoll: use rwlock in order to reduce ep_poll_callback() contention 2019-03-07 18:32:01 -08:00
exec.c exec: increase BINPRM_BUF_SIZE to 256 2019-03-07 18:32:01 -08:00
fcntl.c fs: mark expected switch fall-throughs 2019-04-08 18:21:02 -05:00
fhandle.c
file_table.c vfs: syscall: Add open_tree(2) to reference or clone a mount 2019-03-20 18:49:06 -04:00
file.c io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
filesystems.c vfs: Implement a filesystem superblock creation/configuration context 2019-02-28 03:29:26 -05:00
fs_context.c vfs: syscall: Add fsconfig() for configuring and managing a context 2019-03-20 18:49:06 -04:00
fs_parser.c fs: fs_parser: fix printk format warning 2019-03-29 10:01:38 -07:00
fs_pin.c
fs_struct.c
fs_types.c fs: common implementation of file type 2019-01-21 17:48:13 +01:00
fs-writeback.c writeback: synchronize sync(2) against cgroup writeback membership switches 2019-01-22 14:39:38 -07:00
fsopen.c vfs: syscall: Add fspick() to select a superblock for reconfiguration 2019-03-20 18:49:06 -04:00
inode.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:50:27 -07:00
internal.h Merge branch 'work.mount-syscalls' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:17:51 -07:00
io_uring.c io_uring: use cpu_online() to check p->sq_thread_cpu instead of cpu_possible() 2019-05-07 08:41:26 -06:00
ioctl.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
iomap.c for-5.2/block-20190507 2019-05-07 18:14:36 -07:00
Kconfig unicode: introduce UTF-8 character database 2019-04-25 13:38:44 -04:00
Kconfig.binfmt
libfs.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-05-07 20:50:27 -07:00
locks.c Wimplicit-fallthrough patches for 5.2-rc1 2019-05-07 12:48:10 -07:00
Makefile Add as a feature case-insensitive directories (the casefold feature) 2019-05-07 21:12:44 -07:00
mbcache.c
mount.h saner handling of temporary namespaces 2019-01-30 17:44:07 -05:00
mpage.c block: remove the i argument to bio_for_each_segment_all 2019-04-30 09:26:13 -06:00
namei.c Clean up fscrypt's dcache revalidation support, and other 2019-05-07 21:28:04 -07:00
namespace.c do_move_mount(): fix an unsafe use of is_anon_ns() 2019-05-09 02:32:50 -04:00
no-block.c
nsfs.c nsfs: unobfuscate 2019-04-09 19:20:57 -04:00
open.c vfs: pass ppos=NULL to .read()/.write() of FMODE_STREAM files 2019-05-06 17:46:52 +03:00
pipe.c Merge branch 'page-refs' (page ref overflow) 2019-04-14 15:09:40 -07:00
pnode.c separate copying and locking mount tree on cross-userns copies 2019-01-30 17:14:50 -05:00
pnode.h separate copying and locking mount tree on cross-userns copies 2019-01-30 17:14:50 -05:00
posix_acl.c
proc_namespace.c
read_write.c vfs: pass ppos=NULL to .read()/.write() of FMODE_STREAM files 2019-05-06 17:46:52 +03:00
readdir.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
select.c y2038: syscalls: rename y2038 compat syscalls 2019-02-07 00:13:27 +01:00
seq_file.c fs: mark expected switch fall-throughs 2019-04-08 18:21:02 -05:00
signalfd.c fs: mark expected switch fall-throughs 2019-04-08 18:21:02 -05:00
splice.c There tracing fixes: 2019-04-26 11:09:55 -07:00
stack.c block: remove CONFIG_LBDAF 2019-04-06 10:48:35 -06:00
stat.c fs: move generic stat response attr handling to vfs_getattr_nosec 2019-02-01 01:55:45 -05:00
statfs.c vfs: add vfs_get_fsid() helper 2019-02-07 16:38:35 +01:00
super.c [fix] get rid of checking for absent device name in vfs_get_tree() 2019-04-28 21:34:21 -04:00
sync.c fs: add sync_file_range() helper 2019-05-02 14:08:53 -06:00
timerfd.c y2038: syscalls: rename y2038 compat syscalls 2019-02-07 00:13:27 +01:00
userfaultfd.c coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping 2019-04-19 09:46:05 -07:00
utimes.c y2038: syscalls: rename y2038 compat syscalls 2019-02-07 00:13:27 +01:00
xattr.c