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Amir Goldstein 2e71b03423 fanotify: fix logic of events on child 
commit 54a307ba8d3cd00a3902337ffaae28f436eeb1a4 upstream.

When event on child inodes are sent to the parent inode mark and
parent inode mark was not marked with FAN_EVENT_ON_CHILD, the event
will not be delivered to the listener process. However, if the same
process also has a mount mark, the event to the parent inode will be
delivered regadless of the mount mark mask.

This behavior is incorrect in the case where the mount mark mask does
not contain the specific event type. For example, the process adds
a mark on a directory with mask FAN_MODIFY (without FAN_EVENT_ON_CHILD)
and a mount mark with mask FAN_CLOSE_NOWRITE (without FAN_ONDIR).

A modify event on a file inside that directory (and inside that mount)
should not create a FAN_MODIFY event, because neither of the marks
requested to get that event on the file.

Fixes: 1968f5eed5 ("fanotify: use both marks when possible")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
 		2019-07-27 21:52:17 +02:00
..
9p Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
adfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
affs This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
afs
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autofs4 move d_rcu from overlapping d_child to overlapping d_alias 2015-04-29 10:34:00 +02:00
befs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
bfs
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btrfs Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
cachefiles
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ceph move d_rcu from overlapping d_child to overlapping d_alias 2015-04-29 10:34:00 +02:00
cifs This is the 3.10.102 stable release 2017-04-18 17:22:08 +02:00
coda This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
configfs
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cramfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
crypto fscrypt: remove broken support for detecting keyring key revocation 2019-07-27 21:51:53 +02:00
debugfs BACKPORT: dentry name snapshots 2017-12-22 20:25:56 +00:00
devpts This is the 3.10.98 stable release 2017-04-18 17:17:24 +02:00
dlm
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ecryptfs eCryptfs: use after free in ecryptfs_release_messaging() 2019-07-27 21:51:50 +02:00
efivarfs efi: Make efivarfs entries immutable by default 2016-03-16 08:41:37 -07:00
efs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
exfat Import latest Samsung release 2017-04-18 03:43:52 +02:00
exofs
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exportfs This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
ext2 it's still short a few helpers, but infrastructure should be OK now... 2018-12-03 11:52:03 +01:00
ext3 posix_acl: Clear SGID bit when setting file permissions 2019-07-27 21:42:52 +02:00
ext4 ext4: force revalidation of directory pointer after seekdir(2) 2019-07-27 21:52:03 +02:00
f2fs f2fs: fix race condition in between free nid allocator/initializer 2019-07-27 21:50:48 +02:00
fat fat: validate ->i_start before using 2019-07-27 21:51:37 +02:00
freevxfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
fscache FS-Cache: fix dereference of NULL user_key_payload 2019-07-27 21:44:20 +02:00
fuse fuse: Add missed unlock_page() to fuse_readpages_fill() 2019-07-27 21:51:24 +02:00
gfs2 posix_acl: Clear SGID bit when setting file permissions 2019-07-27 21:42:52 +02:00
hfs Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
hfsplus Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
hostfs uml: fix hostfs mknod() 2016-03-03 15:06:23 -08:00
hpfs Merge remote-tracking branch 'f2fs/linux-3.10.y' into HEAD 2017-04-18 17:02:28 +02:00
hppfs
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hugetlbfs mm: larger stack guard gap, between vmas 2017-07-11 00:00:39 +00:00
isofs isofs: fix timestamps beyond 2027 2019-07-27 21:46:04 +02:00
jbd
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jbd2 jbd2: if the journal is aborted then don't allow update of the log tail 2019-07-27 21:52:00 +02:00
jffs2 Merge tag 'LA.BR.1.3.6-03910-8976.0' of https://source.codeaurora.org/quic/la/kernel/msm-3.10 into HEAD 2017-05-26 13:28:48 +02:00
jfs posix_acl: Clear SGID bit when setting file permissions 2019-07-27 21:42:52 +02:00
lockd lockd: create NSM handles per net namespace 2016-03-03 15:06:20 -08:00
logfs
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minix it's still short a few helpers, but infrastructure should be OK now... 2018-12-03 11:52:03 +01:00
ncpfs This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
nfs This is the 3.10.99 stable release 2017-04-18 17:17:46 +02:00
nfs_common
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nfsd nfsd: auth: Fix gid sorting when rootsquash enabled 2019-07-27 21:46:18 +02:00
nilfs2 This is the 3.10.84 stable release 2015-09-30 13:25:40 +05:30
nls
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notify fanotify: fix logic of events on child 2019-07-27 21:52:17 +02:00
ntfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
ocfs2 posix_acl: Clear SGID bit when setting file permissions 2019-07-27 21:42:52 +02:00
omfs fs, omfs: add NULL terminator in the end up the token list 2015-06-05 23:19:54 -07:00
openpromfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
proc proc: prevent stacking filesystems on top 2019-07-27 21:51:30 +02:00
pstore pstore: Fix incorrect persistent ram buffer mapping 2019-07-27 21:51:40 +02:00
qnx4 fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
qnx6 fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
quota quota: provide interface for readding allocated space into reserved space 2015-01-29 17:40:57 -08:00
ramfs
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reiserfs posix_acl: Clear SGID bit when setting file permissions 2017-04-28 00:00:11 -07:00
romfs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
sdcardfs ANDROID: sdcardfs: Don't use OVERRIDE_CRED macro 2019-07-27 21:51:52 +02:00
sdfat Import T813XXS2BRC2 kernel source changes 2018-05-26 00:39:42 +02:00
squashfs Squashfs: Add LZ4 compression configuration option 2015-09-16 18:20:12 +05:30
sysfs Import latest Samsung release 2017-04-18 03:43:52 +02:00
sysv This is the 3.10.97 stable release 2017-04-18 17:17:20 +02:00
ubifs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
udf This is the 3.10.98 stable release 2017-04-18 17:17:24 +02:00
ufs fs: push sync_filesystem() down to the file system's remount_fs() 2015-09-16 18:20:11 +05:30
xfs posix_acl: Clear SGID bit when setting file permissions 2019-07-27 21:42:52 +02:00
yaffs2
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Kconfig Initial port of sdcardfs 2018-02-06 13:12:17 +01:00
Kconfig.binfmt
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Makefile Initial port of sdcardfs 2018-02-06 13:12:17 +01:00
aio.c fix io_destroy()/aio_complete() race 2019-07-27 21:49:38 +02:00
anon_inodes.c
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attr.c vfs: Add setattr2 for filesystems with per mount permissions 2018-02-06 13:12:20 +01:00
bad_inode.c
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binfmt_aout.c
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binfmt_elf.c binfmt_elf: Respect error return from `regset->active' 2019-07-27 21:51:40 +02:00
binfmt_elf_fdpic.c
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binfmt_em86.c
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binfmt_flat.c
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binfmt_misc.c
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binfmt_script.c
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binfmt_som.c
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bio-integrity.c
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bio.c more bio_map_user_iov() leak fixes 2019-07-27 21:45:37 +02:00
block_dev.c block: protect iterate_bdevs() against concurrent close 2019-07-27 21:42:54 +02:00
buffer.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
char_dev.c
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compat.c constify ->actor 2015-09-16 18:20:09 +05:30
compat_binfmt_elf.c binfmt_elf: add ELF_HWCAP2 to compat auxv entries 2015-03-19 14:52:32 -07:00
compat_ioctl.c
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coredump.c coredump: fix unfreezable coredumping task 2019-07-27 21:42:15 +02:00
coredump.h
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dcache.c fs: take_dentry_name_snapshot: avoid kfree under spinlock fixup 2019-07-27 21:45:27 +02:00
dcookies.c
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direct-io.c direct-io: Prevent NULL pointer access in submit_page_section 2019-07-27 21:44:19 +02:00
drop_caches.c Import latest Samsung release 2017-04-18 03:43:52 +02:00
eventfd.c
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eventpoll.c epoll: fix race between ep_poll_callback(POLLFREE) and ep_free()/ep_remove() 2019-07-27 21:45:14 +02:00
exec.c exec: Limit arg stack to at most 75% of _STK_LIM 2019-07-27 21:51:48 +02:00
fcntl.c vfs: add missing check for __O_TMPFILE in fcntl_init() 2018-12-03 11:52:41 +01:00
fhandle.c vfs: read file_handle only once in handle_to_path. 2015-07-22 07:25:30 -07:00
file.c
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file_table.c get rid of s_files and files_lock 2015-07-03 19:48:08 -07:00
filesystems.c
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fs-writeback.c bdi: Fix oops in wb_workfn() 2019-07-27 21:52:12 +02:00
fs_struct.c sdcardfs: override umask on mkdir and create 2018-02-06 13:12:18 +01:00
generic_acl.c tmpfs: clear S_ISGID when setting posix ACLs 2017-04-22 23:02:57 +02:00
inode.c Fix up non-directory creation in SGID directories 2019-07-27 21:51:41 +02:00
internal.h vfs: Allow filesystems to access their private mount data 2018-02-06 13:12:19 +01:00
ioctl.c
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ioprio.c block: fix use-after-free in sys_ioprio_get() 2016-11-19 20:01:20 -08:00
libfs.c move d_rcu from overlapping d_child to overlapping d_alias 2015-04-29 10:34:00 +02:00
locks.c locks: fix unlock when fcntl_setlk races with a close 2016-03-09 15:31:53 -08:00
mbcache.c
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mount.h
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mpage.c
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namei.c VFS: Properly free dentry name snapshots in vfs_rename2 2019-07-27 21:46:08 +02:00
namespace.c Don't leak MNT_INTERNAL away from internal mounts 2019-07-27 21:52:13 +02:00
no-block.c
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open.c fs: Fix file mode for O_TMPFILE 2018-12-03 11:52:40 +01:00
pipe.c pipe: read buffer limits atomically 2019-07-27 21:49:46 +02:00
pnode.c BACKPORT: smarter propagate_mnt() 2019-07-27 21:51:52 +02:00
pnode.h BACKPORT: smarter propagate_mnt() 2019-07-27 21:51:52 +02:00
posix_acl.c posix_acl: Clear SGID bit when setting file permissions 2019-07-27 21:42:52 +02:00
proc_namespace.c vfs: Allow filesystems to access their private mount data 2018-02-06 13:12:19 +01:00
read_write.c fs: Workaround the compiler's bad optimization 2016-02-04 13:23:34 +05:30
readdir.c fs: readdir: Fix su hide patch for non-iterate filesystems 2017-07-14 21:04:43 +02:00
select.c
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seq_file.c fs/seq_file: fix out-of-bounds read 2019-07-27 21:42:21 +02:00
signalfd.c signalfd: fix information leak in signalfd_copyinfo 2015-08-16 20:51:42 -07:00
splice.c vfs: fix uninitialized flags in splice_to_pipe() 2019-07-27 21:43:53 +02:00
stack.c
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stat.c quota: provide interface for readding allocated space into reserved space 2015-01-29 17:40:57 -08:00
statfs.c
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super.c vfs: Allow filesystems to access their private mount data 2018-02-06 13:12:19 +01:00
sync.c Import T813XXS2BRC2 kernel source changes 2018-05-26 00:39:42 +02:00
timerfd.c timerfd: Protect the might cancel mechanism proper 2017-11-08 05:33:07 -08:00
utimes.c vfs: Add setattr2 for filesystems with per mount permissions 2018-02-06 13:12:20 +01:00
xattr.c getxattr: use correct xattr length 2019-07-27 21:51:26 +02:00
xattr_acl.c
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