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Steven Rostedt (Google) d508ee2dd5 tracefs/eventfs: Free top level files on removal 
When an instance is removed, the top level files of the eventfs directory
are not cleaned up. Call the eventfs_remove() on each of the entries to
free them.

This was found via kmemleak:

unreferenced object 0xffff8881047c1280 (size 96):
  comm "mkdir", pid 924, jiffies 4294906489 (age 2013.077s)
  hex dump (first 32 bytes):
    18 31 ed 03 81 88 ff ff 00 31 09 24 81 88 ff ff  .1.......1.$....
    00 00 00 00 00 00 00 00 98 19 7c 04 81 88 ff ff  ..........|.....
  backtrace:
    [<000000000fa46b4d>] kmalloc_trace+0x2a/0xa0
    [<00000000e729cd0c>] eventfs_prepare_ef.constprop.0+0x3a/0x160
    [<000000009032e6a8>] eventfs_add_events_file+0xa0/0x160
    [<00000000fe968442>] create_event_toplevel_files+0x6f/0x130
    [<00000000e364d173>] event_trace_add_tracer+0x14/0x140
    [<00000000411840fa>] trace_array_create_dir+0x52/0xf0
    [<00000000967804fa>] trace_array_create+0x208/0x370
    [<00000000da505565>] instance_mkdir+0x6b/0xb0
    [<00000000dc1215af>] tracefs_syscall_mkdir+0x5b/0x90
    [<00000000a8aca289>] vfs_mkdir+0x272/0x380
    [<000000007709b242>] do_mkdirat+0xfc/0x1d0
    [<00000000c0b6d219>] __x64_sys_mkdir+0x78/0xa0
    [<0000000097b5dd4b>] do_syscall_64+0x3f/0x90
    [<00000000a3f00cfa>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8
unreferenced object 0xffff888103ed3118 (size 8):
  comm "mkdir", pid 924, jiffies 4294906489 (age 2013.077s)
  hex dump (first 8 bytes):
    65 6e 61 62 6c 65 00 00                          enable..
  backtrace:
    [<0000000010f75127>] __kmalloc_node_track_caller+0x51/0x160
    [<000000004b3eca91>] kstrdup+0x34/0x60
    [<0000000050074d7a>] eventfs_prepare_ef.constprop.0+0x53/0x160
    [<000000009032e6a8>] eventfs_add_events_file+0xa0/0x160
    [<00000000fe968442>] create_event_toplevel_files+0x6f/0x130
    [<00000000e364d173>] event_trace_add_tracer+0x14/0x140
    [<00000000411840fa>] trace_array_create_dir+0x52/0xf0
    [<00000000967804fa>] trace_array_create+0x208/0x370
    [<00000000da505565>] instance_mkdir+0x6b/0xb0
    [<00000000dc1215af>] tracefs_syscall_mkdir+0x5b/0x90
    [<00000000a8aca289>] vfs_mkdir+0x272/0x380
    [<000000007709b242>] do_mkdirat+0xfc/0x1d0
    [<00000000c0b6d219>] __x64_sys_mkdir+0x78/0xa0
    [<0000000097b5dd4b>] do_syscall_64+0x3f/0x90
    [<00000000a3f00cfa>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8

Link: https://lore.kernel.org/linux-trace-kernel/20230907175859.6fedbaa2@gandalf.local.home

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ajay Kaher <akaher@vmware.com>
Cc: Zheng Yejian <zhengyejian1@huawei.com>
Cc: Naresh Kamboju <naresh.kamboju@linaro.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Fixes: 5bdcd5f5331a2 eventfs: ("Implement removal of meta data from eventfs")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-09-08 23:12:06 -04:00
..
9p
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
adfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
affs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
afs
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
autofs
v6.6-vfs.autofs
2023-08-28 11:39:14 -07:00
befs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
bfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
btrfs
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
cachefiles
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
ceph
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
coda
v6.6-vfs.ctime
2023-08-28 09:31:32 -07:00
configfs
configfs: convert to ctime accessor functions
2023-07-13 10:28:05 +02:00
cramfs
v6.6-vfs.super
2023-08-28 11:04:18 -07:00
crypto
…
debugfs
Char/Misc driver changes for 6.6-rc1
2023-09-01 09:53:54 -07:00
devpts
v6.6-vfs.misc
2023-08-28 10:17:14 -07:00
dlm
dlm: fix plock lookup when using multiple lockspaces
2023-08-25 10:31:39 -05:00
ecryptfs
v6.6-vfs.misc
2023-08-28 10:17:14 -07:00
efivarfs
efivarfs: convert to ctime accessor functions
2023-07-13 10:28:06 +02:00
efs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
erofs
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
exfat
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
exportfs
exportfs: remove kernel-doc warnings in exportfs
2023-08-29 17:45:22 -04:00
ext2
\n
2023-08-30 12:10:50 -07:00
ext4
Many ext4 and jbd2 cleanups and bug fixes for v6.6-rc1.
2023-08-31 15:18:15 -07:00
f2fs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
fat
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
freevxfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
fscache
…
fuse
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
gfs2
dlm for 6.6
2023-08-31 15:02:12 -07:00
hfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
hfsplus
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
hostfs
hostfs: convert to ctime accessor functions
2023-07-24 10:30:00 +02:00
hpfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
hugetlbfs
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
iomap
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
isofs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
jbd2
Many ext4 and jbd2 cleanups and bug fixes for v6.6-rc1.
2023-08-31 15:18:15 -07:00
jffs2
jffs2: convert to ctime accessor functions
2023-07-24 10:30:01 +02:00
jfs
A few small fixes
2023-08-31 15:25:01 -07:00
kernfs
Driver core changes for 6.6-rc1
2023-09-01 09:43:18 -07:00
lockd
SUNRPC: Add enum svc_auth_status
2023-08-29 17:45:22 -04:00
minix
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
netfs
…
nfs
NFS CLient Updates for Linux 6.6
2023-08-31 15:36:41 -07:00
nfs_common
…
nfsd
NFSD 6.6 Release Notes
2023-08-31 15:32:18 -07:00
nilfs2
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
nls
fs/jfs: Use common ucs2 upper case table
2023-08-30 08:55:52 -05:00
notify
dnotify: Pass argument of fcntl_dirnotify as int
2023-07-10 14:36:12 +02:00
ntfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
ntfs3
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
ocfs2
Many ext4 and jbd2 cleanups and bug fixes for v6.6-rc1.
2023-08-31 15:18:15 -07:00
omfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
openpromfs
openpromfs: convert to ctime accessor functions
2023-07-24 10:30:03 +02:00
orangefs
fs: drop the timespec64 argument from update_time
2023-08-11 09:04:57 +02:00
overlayfs
overlayfs update for 6.6
2023-08-30 11:54:09 -07:00
proc
Add x86 shadow stack support
2023-08-31 12:20:12 -07:00
pstore
pstore updates for v6.6-rc1
2023-08-28 12:36:04 -07:00
qnx4
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
qnx6
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
quota
\n
2023-08-30 12:10:50 -07:00
ramfs
ramfs: convert to ctime accessor functions
2023-07-24 10:30:04 +02:00
reiserfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
romfs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
smb
ten ksmbd server fixes
2023-08-31 15:28:26 -07:00
squashfs
squashfs: convert to ctime accessor functions
2023-07-24 10:30:05 +02:00
sysfs
…
sysv
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
tracefs
tracefs/eventfs: Free top level files on removal
2023-09-08 23:12:06 -04:00
ubifs
fs: drop the timespec64 argument from update_time
2023-08-11 09:04:57 +02:00
udf
\n
2023-08-30 12:10:50 -07:00
ufs
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
unicode
…
vboxsf
v6.6-vfs.ctime
2023-08-28 09:31:32 -07:00
verity
fsverity: skip PKCS#7 parser when keyring is empty
2023-08-20 10:33:43 -07:00
xfs
New code for 6.6:
2023-08-30 12:34:12 -07:00
zonefs
New code for 6.6:
2023-08-28 11:59:52 -07:00
aio.c
Add x86 shadow stack support
2023-08-31 12:20:12 -07:00
anon_inodes.c
…
attr.c
v6.6-vfs.misc
2023-08-28 10:17:14 -07:00
bad_inode.c
fs: drop the timespec64 argument from update_time
2023-08-11 09:04:57 +02:00
binfmt_elf_fdpic.c
binfmt_elf_fdpic: support 64-bit systems
2023-08-23 14:17:42 -07:00
binfmt_elf_test.c
…
binfmt_elf.c
Merge branch 'expand-stack'
2023-06-28 20:35:21 -07:00
binfmt_flat.c
…
binfmt_misc.c
fs: convert to ctime accessor functions
2023-07-13 10:28:04 +02:00
binfmt_script.c
…
buffer.c
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
char_dev.c
…
compat_binfmt_elf.c
…
coredump.c
v6.5/vfs.misc
2023-06-26 09:50:21 -07:00
d_path.c
…
dax.c
mm: remove enum page_entry_size
2023-08-24 16:20:30 -07:00
dcache.c
fs/dcache: Replace printk and WARN_ON by WARN
2023-08-19 13:41:11 +02:00
direct-io.c
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
2023-06-28 10:28:11 -07:00
drop_caches.c
fs: drop_caches: draining pages before dropping caches
2023-08-18 10:12:11 -07:00
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-07-11 11:41:34 +02:00
eventpoll.c
epoll: simplify ep_alloc()
2023-07-26 14:56:07 +02:00
exec.c
- An extensive rework of kexec and crash Kconfig from Eric DeVolder
2023-08-29 14:53:51 -07:00
fcntl.c
fcntl: Cast commands with int args explicitly
2023-07-10 14:36:11 +02:00
fhandle.c
…
file_table.c
fs: use __fput_sync in close(2)
2023-08-08 19:36:51 +02:00
file.c
v6.6-vfs.misc
2023-08-28 10:17:14 -07:00
filesystems.c
…
fs_context.c
v6.6-vfs.misc
2023-08-28 10:17:14 -07:00
fs_parser.c
…
fs_pin.c
…
fs_struct.c
kill do_each_thread()
2023-08-21 13:46:25 -07:00
fs_types.c
…
fs-writeback.c
super: make locking naming consistent
2023-08-21 14:36:57 +02:00
fsopen.c
fs: add FSCONFIG_CMD_CREATE_EXCL
2023-08-14 18:48:02 +02:00
init.c
…
inode.c
v6.6-vfs.super
2023-08-28 11:04:18 -07:00
internal.h
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
ioctl.c
v6.6-vfs.super
2023-08-28 11:04:18 -07:00
Kconfig
for-6.6/block-2023-08-28
2023-08-29 20:21:42 -07:00
Kconfig.binfmt
riscv: support the elf-fdpic binfmt loader
2023-08-23 14:17:43 -07:00
kernel_read_file.c
fs: Fix kernel-doc warnings
2023-08-19 12:12:12 +02:00
libfs.c
Many ext4 and jbd2 cleanups and bug fixes for v6.6-rc1.
2023-08-31 15:18:15 -07:00
locks.c
NFSD 6.6 Release Notes
2023-08-31 15:32:18 -07:00
Makefile
fs: add CONFIG_BUFFER_HEAD
2023-08-02 09:13:09 -06:00
mbcache.c
…
mnt_idmapping.c
…
mount.h
…
mpage.c
…
namei.c
fs: Fix kernel-doc warnings
2023-08-19 12:12:12 +02:00
namespace.c
v6.5/vfs.mount
2023-06-26 10:27:04 -07:00
nsfs.c
fs: convert to ctime accessor functions
2023-07-13 10:28:04 +02:00
open.c
v6.6-vfs.fchmodat2
2023-08-28 11:25:27 -07:00
pipe.c
v6.6-vfs.misc
2023-08-28 10:17:14 -07:00
pnode.c
…
pnode.h
…
posix_acl.c
fs: convert to ctime accessor functions
2023-07-13 10:28:04 +02:00
proc_namespace.c
…
read_write.c
fs: Fix one kernel-doc comment
2023-08-15 08:32:45 +02:00
readdir.c
vfs: get rid of old '->iterate' directory operation
2023-08-06 15:08:35 +02:00
remap_range.c
…
select.c
…
seq_file.c
…
signalfd.c
…
splice.c
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
2023-08-29 14:25:26 -07:00
stack.c
fs: convert to ctime accessor functions
2023-07-13 10:28:04 +02:00
stat.c
fs: add infrastructure for multigrain timestamps
2023-08-11 09:04:57 +02:00
statfs.c
…
super.c
fs: export sget_dev()
2023-08-31 12:47:15 +02:00
sync.c
…
sysctls.c
…
timerfd.c
…
userfaultfd.c
mm: userfaultfd: remove stale comment about core dump locking
2023-08-24 16:20:27 -07:00
utimes.c
…
xattr.c
tmpfs,xattr: GFP_KERNEL_ACCOUNT for simple xattrs
2023-08-22 10:57:46 +02:00