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linux/fs
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Jiri Olsa c7642969a5 UPSTREAM: fs/proc/kcore.c: Add bounce buffer for ktext data 
We hit hardened usercopy feature check for kernel text access by reading
kcore file:

  usercopy: kernel memory exposure attempt detected from ffffffff8179a01f (<kernel text>) (4065 bytes)
  kernel BUG at mm/usercopy.c:75!

Bypassing this check for kcore by adding bounce buffer for ktext data.

Reported-by: Steve Best <sbest@redhat.com>
Fixes: f5509cc18d ("mm: Hardened usercopy")
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Bug: 31374226
Change-Id: Ic93e6041b67d804a994518bf4950811f828b406e
(cherry picked from commit df04abfd18)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2016-10-05 08:09:43 -07:00
..
9p
9p: ->evict_inode() should kick out ->i_data, not ->i_mapping
2015-12-08 14:51:16 -05:00
adfs
fs/adfs: remove unneeded cast
2015-06-30 19:44:57 -07:00
affs
fs/affs: make root lookup from blkdev logical size
2015-09-10 13:29:01 -07:00
afs
net: Add a struct net parameter to sock_create_kern
2015-05-11 10:50:17 -04:00
autofs4
make simple_positive() public
2015-06-23 18:02:01 -04:00
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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
btrfs
Merge branch 'for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2015-12-18 15:35:08 -08:00
cachefiles
FS-Cache: Add missing initialization of ret in cachefiles_write_page()
2015-11-16 20:38:43 -05:00
ceph
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2015-11-13 09:24:40 -08:00
cifs
sched/wait: Fix the signal handling fix
2015-12-13 14:30:59 -08:00
coda
fs/coda: fix readlink buffer overflow
2015-09-10 13:29:01 -07:00
configfs
configfs: allow dynamic group creation
2015-11-20 16:17:32 -08:00
cramfs
…
debugfs
debugfs: fix refcount imbalance in start_creating
2015-11-11 02:04:44 -05:00
devpts
devpts: if initialization failed, don't crash when opening /dev/ptmx
2015-06-30 19:44:58 -07:00
dlm
net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
2015-12-01 15:45:05 -05:00
ecryptfs
UPSTREAM: ecryptfs: fix handling of directory opening
2016-08-12 13:44:30 -07:00
efivarfs
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-05-06 10:57:37 -07:00
efs
fs/efs: femove unneeded cast
2015-06-25 17:00:42 -07:00
exofs
osd fs: __r4w_get_page rely on PageUptodate for uptodate
2015-12-12 10:15:34 -08:00
exportfs
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
2015-02-22 11:38:41 -05:00
ext2
ext2, ext4: warn when mounting with dax enabled
2015-11-16 09:43:54 -08:00
ext4
ANDROID: fs: FS tracepoints to track IO.
2016-09-20 21:33:24 +00:00
f2fs
ANDROID: fs: FS tracepoints to track IO.
2016-09-20 21:33:24 +00:00
fat
fat: fix fake_offset handling on error path
2015-11-20 16:17:32 -08:00
freevxfs
freevxfs: Grammar s/an negative/a negative/
2015-08-07 13:59:24 +02:00
fscache
FS-Cache: Handle a write to the page immediately beyond the EOF marker
2015-11-11 02:11:02 -05:00
fuse
fuse: Add support for d_canonical_path
2016-04-25 19:16:11 -07:00
gfs2
Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-11-13 18:02:30 -08:00
hfs
hfs: fix B-tree corruption after insertion at position 0
2015-09-10 13:29:01 -07:00
hfsplus
xattr handlers: Pass handler to operations instead of flags
2015-11-13 20:34:32 -05:00
hostfs
fs: create and use seq_show_option for escaping
2015-09-04 16:54:41 -07:00
hpfs
fs/hpfs/namei.c: remove unnecessary new_valid_dev() check
2015-11-09 15:11:24 -08:00
hugetlbfs
mm/hugetlbfs: fix bugs in fallocate hole punch of areas with holes
2015-11-20 16:17:32 -08:00
isofs
VFS: normal filesystems (and lustre): d_inode() annotations
2015-04-15 15:06:57 -04:00
jbd2
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2015-12-07 10:25:00 -08:00
jffs2
xattr handlers: Pass handler to operations instead of flags
2015-11-13 20:34:32 -05:00
jfs
fs/jfs: remove unnecessary new_valid_dev() checks
2015-11-09 15:11:24 -08:00
kernfs
kernfs: implement kernfs_path_len()
2015-08-18 15:49:15 -07:00
lockd
Merge tag 'nfsd-4.4' of git://linux-nfs.org/~bfields/linux
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: don't allow negative timeouts
2015-11-20 16:17:32 -08:00
nfs
sched/wait: Fix the signal handling fix
2015-12-13 14:30:59 -08:00
nfs_common
lockd: NLM grace period shouldn't block NFSv4 opens
2015-08-13 10:22:06 -04:00
nfsd
nfsd: don't hold ls_mutex across a layout recall
2015-12-16 11:49:58 -05:00
nilfs2
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-11-11 09:45:24 -08:00
nls
…
notify
vfs: change d_canonical_path to take two paths
2016-04-25 19:15:48 -07:00
ntfs
mm, fs: introduce mapping_gfp_constraint()
2015-11-06 17:50:42 -08:00
ocfs2
ocfs2/dlm: clear migration_pending when migration target goes down
2015-12-29 17:45:49 -08:00
omfs
omfs: fix potential integer overflow in allocator
2015-05-28 18:25:19 -07:00
openpromfs
…
overlayfs
ovl: get rid of the dead code left from broken (and disabled) optimizations
2015-12-06 12:31:07 -05:00
proc
UPSTREAM: fs/proc/kcore.c: Add bounce buffer for ktext data
2016-10-05 08:09:43 -07:00
pstore
FROMLIST: pstore: drop pmsg bounce buffer
2016-09-08 14:16:55 -07:00
qnx4
…
qnx6
pagemap.h: move dir_pages() over there
2015-06-23 18:02:00 -04:00
quota
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-09-05 20:34:28 -07:00
ramfs
mm, fs: obey gfp_mapping for add_to_page_cache()
2015-10-16 11:42:28 -07:00
reiserfs
Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-11-13 18:02:30 -08:00
romfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
sdcardfs
ANDROID: sdcardfs: fix itnull.cocci warnings
2016-07-11 19:32:16 +00:00
squashfs
squashfs: xattr simplifications
2015-11-13 20:34:33 -05:00
sysfs
Merge tag 'chrome-platform-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform
2015-11-13 21:53:18 -08:00
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
Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-11-13 18:02:30 -08:00
udf
udf: Don't modify filesystem for read-only mounts
2015-08-20 14:58:35 +02:00
ufs
fix ufs write vs readpage race when writing into a hole
2015-09-09 10:43:12 -07:00
xfs
Merge branch 'for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-11-13 18:02:30 -08:00
aio.c
mm: move ->mremap() from file_operations to vm_operations_struct
2015-09-04 16:54:41 -07:00
anon_inodes.c
…
attr.c
…
bad_inode.c
don't bother with most of the bad_file_ops methods
2015-02-20 04:03:58 -05:00
binfmt_aout.c
assorted conversions to %p[dD]
2014-11-19 13:01:20 -05:00
binfmt_elf_fdpic.c
Merge tag 'libnvdimm-for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2015-11-10 12:07:22 -08:00
binfmt_elf.c
FROMLIST: mm: ASLR: use get_random_long()
2016-03-16 16:50:34 -07:00
binfmt_em86.c
syscalls: implement execveat() system call
2014-12-13 12:42:51 -08:00
binfmt_flat.c
…
binfmt_misc.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-26 17:22:07 -07:00
binfmt_script.c
syscalls: implement execveat() system call
2014-12-13 12:42:51 -08:00
block_dev.c
block: detach bdev inode from its wb in __blkdev_put()
2015-12-04 11:02:17 -07:00
buffer.c
vfs: remove unused wrapper block_page_mkwrite()
2015-11-11 02:19:33 -05:00
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
vfs: make first argument of dir_context.actor typed
2014-10-31 17:48:54 -04:00
coredump.c
coredump: change zap_threads() and zap_process() to use for_each_thread()
2015-11-06 17:50:42 -08:00
dax.c
dax: disable pmd mappings
2015-11-16 23:54:45 -08:00
dcache.c
fs: Export d_absolute_path
2016-03-24 10:32:35 -07:00
dcookies.c
…
direct-io.c
fix the regression from "direct-io: Fix negative return from dio read beyond eof"
2015-12-08 15:02:42 -05:00
drop_caches.c
inode: convert inode_sb_list_lock to per-sb
2015-08-17 18:39:46 -04:00
eventfd.c
eventfd: don't take the spinlock in eventfd_poll
2015-02-17 14:34:52 -08:00
eventpoll.c
BACKPORT: timer: convert timer_slack_ns from unsigned long to u64
2016-07-01 18:12:06 -07:00
exec.c
vfs: Commit to never having exectuables on proc and sysfs.
2015-07-10 10:39:25 -05:00
fcntl.c
vfs: renumber FMODE_NONOTIFY and add to uniqueness check
2015-01-08 15:10:52 -08:00
fhandle.c
vfs: read file_handle only once in handle_to_path
2015-06-02 10:29:07 -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_pin: Allow for the possibility that m_list or s_list go unused.
2015-04-09 11:39:55 -05:00
fs_struct.c
…
fs-writeback.c
fs: block_dump: Don't display inode changes if block_dump < 2
2016-02-16 13:51:11 -08:00
inode.c
fs: fix inode.c kernel-doc warning
2015-11-11 02:18:27 -05:00
internal.h
inode: rename i_wb_list to i_io_list
2015-08-17 23:38:10 -04:00
ioctl.c
fsioctl.c: make generic_block_fiemap() signal-tolerant
2015-02-10 14:30:30 -08:00
Kconfig
Included sdcardfs source code for kernel 3.0
2016-03-22 20:27:13 -07:00
Kconfig.binfmt
mm: split ET_DYN ASLR from mmap ASLR
2015-04-14 16:49:05 -07:00
libfs.c
fs: Set the size of empty dirs to 0.
2015-08-12 15:28:45 -05:00
locks.c
locks: cleanup posix_lock_inode_wait and flock_lock_inode_wait
2015-10-22 14:57:42 -04:00
Makefile
Included sdcardfs source code for kernel 3.0
2016-03-22 20:27:13 -07:00
mbcache.c
…
mount.h
fs: use seq_open_private() for proc_mounts
2015-06-30 19:44:56 -07:00
mpage.c
ANDROID: fs: FS tracepoints to track IO.
2016-09-20 21:33:24 +00:00
namei.c
Don't reset ->total_link_count on nested calls of vfs_path_lookup()
2015-12-06 12:33:02 -05:00
namespace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2015-09-01 16:13:25 -07:00
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
vfs: Commit to never having exectuables on proc and sysfs.
2015-07-10 10:39:25 -05:00
pipe.c
fs/pipe.c: return error code rather than 0 in pipe_write()
2015-11-11 02:18:26 -05:00
pnode.c
mnt: Don't propagate unmounts to locked mounts
2015-04-02 20:34:20 -05:00
pnode.h
mnt: Clarify and correct the disconnect logic in umount_tree
2015-07-22 20:33:27 -05:00
posix_acl.c
xattr handlers: Pass handler to operations instead of flags
2015-11-13 20:34:32 -05:00
proc_namespace.c
fs: use seq_open_private() for proc_mounts
2015-06-30 19:44:56 -07:00
read_write.c
new_sync_write(): discard ->ki_pos unless the return value is positive
2015-04-11 22:29:46 -04:00
readdir.c
vfs: make first argument of dir_context.actor typed
2014-10-31 17:48:54 -04:00
select.c
BACKPORT: timer: convert timer_slack_ns from unsigned long to u64
2016-07-01 18:12:06 -07:00
seq_file.c
fs, seqfile: always allow oom killer
2015-11-06 17:50:42 -08:00
signalfd.c
signalfd: fix information leak in signalfd_copyinfo
2015-08-07 04:39:40 +03:00
splice.c
vfs: Avoid softlockups with sendfile(2)
2015-11-23 21:15:30 -05:00
stack.c
fs: fix comment for 'CONFIG_LBADF'
2014-08-26 09:35:56 +02:00
stat.c
fs/stat.c: remove unnecessary new_valid_dev() check
2015-11-09 15:11:24 -08:00
statfs.c
…
super.c
Fix for in kernel emergency remount when loop mounts are used
2016-02-16 13:54:20 -08:00
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
fs: Convert show_fdinfo functions to void
2014-11-05 14:13:23 -05:00
userfaultfd.c
userfaultfd: Add missing vma_merge parameter
2016-02-16 13:54:16 -08:00
utimes.c
…
xattr.c
9p: xattr simplifications
2015-11-13 20:34:33 -05:00