linux/fs/jfs
Linus Torvalds 617aebe6a9 Currently, hardened usercopy performs dynamic bounds checking on slab
cache objects. This is good, but still leaves a lot of kernel memory
 available to be copied to/from userspace in the face of bugs. To further
 restrict what memory is available for copying, this creates a way to
 whitelist specific areas of a given slab cache object for copying to/from
 userspace, allowing much finer granularity of access control. Slab caches
 that are never exposed to userspace can declare no whitelist for their
 objects, thereby keeping them unavailable to userspace via dynamic copy
 operations. (Note, an implicit form of whitelisting is the use of constant
 sizes in usercopy operations and get_user()/put_user(); these bypass all
 hardened usercopy checks since these sizes cannot change at runtime.)
 
 This new check is WARN-by-default, so any mistakes can be found over the
 next several releases without breaking anyone's system.
 
 The series has roughly the following sections:
 - remove %p and improve reporting with offset
 - prepare infrastructure and whitelist kmalloc
 - update VFS subsystem with whitelists
 - update SCSI subsystem with whitelists
 - update network subsystem with whitelists
 - update process memory with whitelists
 - update per-architecture thread_struct with whitelists
 - update KVM with whitelists and fix ioctl bug
 - mark all other allocations as not whitelisted
 - update lkdtm for more sensible test overage
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Merge tag 'usercopy-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardened usercopy whitelisting from Kees Cook:
 "Currently, hardened usercopy performs dynamic bounds checking on slab
  cache objects. This is good, but still leaves a lot of kernel memory
  available to be copied to/from userspace in the face of bugs.

  To further restrict what memory is available for copying, this creates
  a way to whitelist specific areas of a given slab cache object for
  copying to/from userspace, allowing much finer granularity of access
  control.

  Slab caches that are never exposed to userspace can declare no
  whitelist for their objects, thereby keeping them unavailable to
  userspace via dynamic copy operations. (Note, an implicit form of
  whitelisting is the use of constant sizes in usercopy operations and
  get_user()/put_user(); these bypass all hardened usercopy checks since
  these sizes cannot change at runtime.)

  This new check is WARN-by-default, so any mistakes can be found over
  the next several releases without breaking anyone's system.

  The series has roughly the following sections:
   - remove %p and improve reporting with offset
   - prepare infrastructure and whitelist kmalloc
   - update VFS subsystem with whitelists
   - update SCSI subsystem with whitelists
   - update network subsystem with whitelists
   - update process memory with whitelists
   - update per-architecture thread_struct with whitelists
   - update KVM with whitelists and fix ioctl bug
   - mark all other allocations as not whitelisted
   - update lkdtm for more sensible test overage"

* tag 'usercopy-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (38 commits)
  lkdtm: Update usercopy tests for whitelisting
  usercopy: Restrict non-usercopy caches to size 0
  kvm: x86: fix KVM_XEN_HVM_CONFIG ioctl
  kvm: whitelist struct kvm_vcpu_arch
  arm: Implement thread_struct whitelist for hardened usercopy
  arm64: Implement thread_struct whitelist for hardened usercopy
  x86: Implement thread_struct whitelist for hardened usercopy
  fork: Provide usercopy whitelisting for task_struct
  fork: Define usercopy region in thread_stack slab caches
  fork: Define usercopy region in mm_struct slab caches
  net: Restrict unwhitelisted proto caches to size 0
  sctp: Copy struct sctp_sock.autoclose to userspace using put_user()
  sctp: Define usercopy region in SCTP proto slab cache
  caif: Define usercopy region in caif proto slab cache
  ip: Define usercopy region in IP proto slab cache
  net: Define usercopy region in struct proto slab cache
  scsi: Define usercopy region in scsi_sense_cache slab cache
  cifs: Define usercopy region in cifs_request slab cache
  vxfs: Define usercopy region in vxfs_inode slab cache
  ufs: Define usercopy region in ufs_inode_cache slab cache
  ...
2018-02-03 16:25:42 -08:00
..
acl.c jfs: preserve i_mode if __jfs_set_acl() fails 2017-07-18 14:28:06 -05:00
file.c fs: convert a pile of fsync routines to errseq_t based reporting 2017-08-01 08:39:29 -04:00
inode.c fs: Replace CURRENT_TIME with current_time() for inode timestamps 2016-09-27 21:06:21 -04:00
ioctl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
jfs_acl.h jfs: use generic posix ACL infrastructure 2014-01-25 23:58:22 -05:00
jfs_btree.h
jfs_debug.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
jfs_debug.h
jfs_dinode.h
jfs_discard.c jfs: Remove unnecessary line continuations and terminating newlines 2016-03-30 10:48:25 -05:00
jfs_discard.h
jfs_dmap.c fs/jfs/jfs_dmap.c: replace min/casting by min_t 2014-06-03 14:14:00 -05:00
jfs_dmap.h
jfs_dtree.c jfs: Coalesce some formats 2016-03-30 10:48:28 -05:00
jfs_dtree.h
jfs_extent.c
jfs_extent.h
jfs_filsys.h
jfs_imap.c jfs: Remove jfs_get_inode_flags() 2017-04-19 14:21:23 +02:00
jfs_imap.h
jfs_incore.h fs: cleanup slight list_entry abuse 2015-06-23 18:01:59 -04:00
jfs_inode.c jfs: Remove jfs_get_inode_flags() 2017-04-19 14:21:23 +02:00
jfs_inode.h jfs: Remove jfs_get_inode_flags() 2017-04-19 14:21:23 +02:00
jfs_lock.h
jfs_logmgr.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
jfs_logmgr.h
jfs_metapage.c jfs: Add missing NULL pointer check in __get_metapage 2017-11-02 09:46:50 -05:00
jfs_metapage.h JFS: do not ignore return code from write_one_page() 2017-07-05 18:44:22 -04:00
jfs_mount.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
jfs_superblock.h
jfs_txnmgr.c jfs: Simplify code 2016-09-06 12:17:24 -05:00
jfs_txnmgr.h
jfs_types.h jfs: get rid of homegrown endianness helpers 2014-12-23 17:01:24 -06:00
jfs_umount.c
jfs_unicode.c
jfs_unicode.h
jfs_uniupr.c
jfs_xattr.h jfs: Switch to generic xattr handlers 2016-05-12 22:29:18 -04:00
jfs_xtree.c drop redundant ->owner initializations 2016-05-29 19:08:00 -04:00
jfs_xtree.h jfs: get rid of homegrown endianness helpers 2014-12-23 17:01:24 -06:00
Kconfig fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at 2018-01-01 12:45:37 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-10 20:16:43 -07:00
resize.c jfs: atomically read inode size 2017-02-09 11:57:22 -06:00
super.c jfs: Define usercopy region in jfs_ip slab cache 2018-01-15 12:07:53 -08:00
symlink.c vfs: remove ".readlink = generic_readlink" assignments 2016-12-09 16:45:04 +01:00
xattr.c fs: Replace CURRENT_TIME with current_time() for inode timestamps 2016-09-27 21:06:21 -04:00