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Christophe Leroy d2635f2012 mm: create a new system state and fix core_kernel_text() 
core_kernel_text() considers that until system_state in at least
SYSTEM_RUNNING, init memory is valid.

But init memory is freed a few lines before setting SYSTEM_RUNNING, so
we have a small period of time when core_kernel_text() is wrong.

Create an intermediate system state called SYSTEM_FREEING_INIT that is
set before starting freeing init memory, and use it in
core_kernel_text() to report init memory invalid earlier.

Link: https://lkml.kernel.org/r/9ecfdee7dd4d741d172cb93ff1d87f1c58127c9a.1633001016.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-06 13:30:38 -07:00
..
bpf
bpf: Fix potential race in tail call compatibility check
2021-10-26 12:37:28 -07:00
cgroup
mm/page_alloc: detect allocation forbidden by cpuset and bail out early
2021-11-06 13:30:38 -07:00
configs
drivers/char: remove /dev/kmem for good
2021-05-07 00:26:34 -07:00
debug
kgdb patches for 5.15
2021-09-07 12:08:04 -07:00
dma
dma-mapping fixes for Linux 5.15
2021-10-20 10:16:51 -10:00
entry
entry: rseq: Call rseq_handle_notify_resume() in tracehook_notify_resume()
2021-09-22 10:24:01 -04:00
events
perf/core: fix userpage->time_enabled of inactive events
2021-10-01 13:57:54 +02:00
gcov
Kconfig: Introduce ARCH_WANTS_NO_INSTR and CC_HAS_NO_PROFILE_FN_ATTR
2021-06-22 11:07:18 -07:00
irq
irqchip fixes for 5.15, take #1
2021-09-24 14:11:04 +02:00
kcsan
LKMM updates:
2021-09-02 13:00:15 -07:00
livepatch
livepatch: Replace deprecated CPU-hotplug functions.
2021-08-19 12:00:24 +02:00
locking
locking/rwbase: Take care of ordering guarantee for fastpath reader
2021-09-15 17:49:16 +02:00
power
Merge branches 'pm-pci', 'pm-sleep', 'pm-domains' and 'powercap'
2021-08-30 19:25:42 +02:00
printk
memblock: introduce saner 'memblock_free_ptr()' interface
2021-09-14 13:23:22 -07:00
rcu
Updates for locking and atomics:
2021-08-30 14:26:36 -07:00
sched
mm: move node_reclaim_distance to fix NUMA without SMP
2021-11-06 13:30:38 -07:00
time
posix-cpu-timers: Prevent spuriously armed 0-value itimer
2021-09-23 11:53:51 +02:00
trace
tracing: Fix misspelling of "missing"
2021-10-29 09:54:14 -04:00
.gitignore
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
acct.c
kernel/acct.c: use dedicated helper to access rlimit values
2021-09-08 11:50:26 -07:00
async.c
kernel/async.c: remove async_unregister_domain()
2021-05-07 00:26:33 -07:00
audit_fsnotify.c
audit_alloc_mark(): don't open-code ERR_CAST()
2021-02-23 10:25:27 -05:00
audit_tree.c
audit: move put_tree() to avoid trim_trees refcount underflow and UAF
2021-08-24 18:52:36 -04:00
audit_watch.c
fsnotify: generalize handle_inode_event()
2020-12-03 14:58:35 +01:00
audit.c
lsm: separate security_task_getsecid() into subjective and objective variants
2021-03-22 15:23:32 -04:00
audit.h
audit: add header protection to kernel/audit.h
2021-07-19 22:38:24 -04:00
auditfilter.c
lsm: separate security_task_getsecid() into subjective and objective variants
2021-03-22 15:23:32 -04:00
auditsc.c
audit: fix possible null-pointer dereference in audit_filter_rules
2021-10-18 18:27:47 -04:00
backtracetest.c
…
bounds.c
…
capability.c
capability: handle idmapped mounts
2021-01-24 14:27:16 +01:00
cfi.c
cfi: Use rcu_read_{un}lock_sched_notrace
2021-08-11 13:11:12 -07:00
compat.c
arch: remove compat_alloc_user_space
2021-09-08 15:32:35 -07:00
configs.c
…
context_tracking.c
…
cpu_pm.c
PM: cpu: Make notifier chain use a raw_spinlock_t
2021-08-16 18:55:32 +02:00
cpu.c
cpu/hotplug: Add debug printks for hotplug callback failures
2021-08-10 18:31:32 +02:00
crash_core.c
kdump: use vmlinux_build_id to simplify
2021-07-08 11:48:22 -07:00
crash_dump.c
…
cred.c
ucounts: Move get_ucounts from cred_alloc_blank to key_change_session_keyring
2021-10-20 10:34:20 -05:00
delayacct.c
delayacct: Add sysctl to enable at runtime
2021-05-12 11:43:25 +02:00
dma.c
…
exec_domain.c
…
exit.c
io_uring: remove files pointer in cancellation functions
2021-08-23 13:10:37 -06:00
extable.c
mm: create a new system state and fix core_kernel_text()
2021-11-06 13:30:38 -07:00
fail_function.c
fault-injection: handle EI_ETYPE_TRUE
2020-12-15 22:46:19 -08:00
fork.c
mm/hugetlb: initialize hugetlb_usage in mm_init
2021-09-08 18:45:53 -07:00
freezer.c
sched: Add get_current_state()
2021-06-18 11:43:08 +02:00
futex.c
futex: Remove unused variable 'vpid' in futex_proxy_trylock_atomic()
2021-09-03 23:00:22 +02:00
gen_kheaders.sh
kbuild: clean up ${quiet} checks in shell scripts
2021-05-27 04:01:50 +09:00
groups.c
groups: simplify struct group_info allocation
2021-02-26 09:41:03 -08:00
hung_task.c
Merge branch 'akpm' (patches from Andrew)
2021-07-02 12:08:10 -07:00
iomem.c
…
irq_work.c
irq_work: Make irq_work_queue() NMI-safe again
2021-06-10 10:00:08 +02:00
jump_label.c
jump_label: Fix jump_label_text_reserved() vs __init
2021-07-05 10:46:20 +02:00
kallsyms.c
module: add printk formats to add module build ID to stacktraces
2021-07-08 11:48:22 -07:00
kcmp.c
Merge branch 'exec-update-lock-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2020-12-15 19:36:48 -08:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
locking/rwlock: Provide RT variant
2021-08-17 17:50:51 +02:00
Kconfig.preempt
sched/core: Disable CONFIG_SCHED_CORE by default
2021-06-28 22:43:05 +02:00
kcov.c
…
kexec_core.c
Merge branch 'rework/printk_safe-removal' into for-linus
2021-08-30 16:36:10 +02:00
kexec_elf.c
…
kexec_file.c
kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
2021-05-07 00:26:32 -07:00
kexec_internal.h
kexec: move machine_kexec_post_load() to public interface
2021-02-22 12:33:26 +00:00
kexec.c
kexec: avoid compat_alloc_user_space
2021-09-08 15:32:34 -07:00
kheaders.c
…
kmod.c
modules: add CONFIG_MODPROBE_PATH
2021-05-07 00:26:33 -07:00
kprobes.c
Locking fixes:
2021-07-11 11:06:09 -07:00
ksysfs.c
…
kthread.c
Merge branch 'akpm' (patches from Andrew)
2021-06-29 17:29:11 -07:00
latencytop.c
…
Makefile
kbuild: update config_data.gz only when the content of .config is changed
2021-05-02 00:43:35 +09:00
module_signature.c
module: harden ELF info handling
2021-01-19 10:24:45 +01:00
module_signing.c
module: harden ELF info handling
2021-01-19 10:24:45 +01:00
module-internal.h
…
module.c
module: fix clang CFI with MODULE_UNLOAD=n
2021-09-28 12:56:26 +02:00
notifier.c
notifier: Remove atomic_notifier_call_chain_robust()
2021-08-16 18:55:32 +02:00
nsproxy.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
padata.c
padata: Remove repeated verbose license text
2021-08-27 16:30:18 +08:00
panic.c
Merge branch 'rework/printk_safe-removal' into for-linus
2021-08-30 16:36:10 +02:00
params.c
params: lift param_set_uint_minmax to common code
2021-08-16 14:42:22 +02:00
pid_namespace.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
pid.c
kernel/pid.c: implement additional checks upon pidfd_create() parameters
2021-08-10 12:53:07 +02:00
profile.c
profiling: fix shift-out-of-bounds bugs
2021-09-08 11:50:26 -07:00
ptrace.c
sched: Change task_struct::state
2021-06-18 11:43:09 +02:00
range.c
…
reboot.c
reboot: Add hardware protection power-off
2021-06-21 13:08:36 +01:00
regset.c
…
relay.c
relay: allow the use of const callback structs
2020-12-15 22:46:18 -08:00
resource_kunit.c
resource: provide meaningful MODULE_LICENSE() in test suite
2020-11-25 18:52:35 +01:00
resource.c
kernel/resource: fix return code check in __request_free_mem_region
2021-05-14 19:41:32 -07:00
rseq.c
KVM: rseq: Update rseq when processing NOTIFY_RESUME on xfer to KVM guest
2021-09-22 10:24:01 -04:00
scftorture.c
scftorture: Avoid NULL pointer exception on early exit
2021-07-27 11:39:30 -07:00
scs.c
scs: switch to vmapped shadow stacks
2020-12-01 10:30:28 +00:00
seccomp.c
Merge branch 'exit-cleanups-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2021-09-01 14:52:05 -07:00
signal.c
Merge branch 'ucount-fixes-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2021-10-21 17:27:17 -10:00
smp.c
smp: Fix all kernel-doc warnings
2021-08-11 14:47:16 +02:00
smpboot.c
smpboot: Replace deprecated CPU-hotplug functions.
2021-08-10 14:57:42 +02:00
smpboot.h
…
softirq.c
genirq: Change force_irqthreads to a static key
2021-08-10 22:50:07 +02:00
stackleak.c
…
stacktrace.c
…
static_call.c
static_call: Fix static_call_text_reserved() vs __init
2021-07-05 10:46:33 +02:00
stop_machine.c
stop_machine: Add caller debug info to queue_stop_cpus_work
2021-03-23 16:01:58 +01:00
sys_ni.c
compat: remove some compat entry points
2021-09-08 15:32:35 -07:00
sys.c
Merge branch 'akpm' (patches from Andrew)
2021-09-08 12:55:35 -07:00
sysctl-test.c
kernel/sysctl-test: Remove some casts which are no-longer required
2021-06-23 16:41:24 -06:00
sysctl.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
task_work.c
kasan: record task_work_add() call stack
2021-04-30 11:20:42 -07:00
taskstats.c
…
test_kprobes.c
…
torture.c
torture: Replace deprecated CPU-hotplug functions.
2021-08-10 10:48:07 -07:00
tracepoint.c
tracepoint: Fix kerneldoc comments
2021-08-16 11:39:51 -04:00
tsacct.c
mm/mmap.c: fix a data race of mm->total_vm
2021-11-06 13:30:35 -07:00
ucount.c
ucounts: Fix signal ucount refcounting
2021-10-18 16:02:30 -05:00
uid16.c
…
uid16.h
…
umh.c
kernel/umh.c: fix some spelling mistakes
2021-05-07 00:26:34 -07:00
up.c
A set of locking related fixes and updates:
2021-05-09 13:07:03 -07:00
user_namespace.c
memcg: enable accounting for new namesapces and struct nsproxy
2021-09-03 09:58:12 -07:00
user-return-notifier.c
…
user.c
fs/epoll: use a per-cpu counter for user's watches count
2021-09-08 11:50:27 -07:00
usermode_driver.c
Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-07-03 11:41:14 -07:00
utsname_sysctl.c
…
utsname.c
…
watch_queue.c
watch_queue: rectify kernel-doc for init_watch()
2021-01-26 11:16:34 +00:00
watchdog_hld.c
…
watchdog.c
kernel: watchdog: modify the explanation related to watchdog thread
2021-06-29 10:53:46 -07:00
workqueue_internal.h
workqueue: Assign a color to barrier work items
2021-08-17 07:49:10 -10:00
workqueue.c
workqueue, kasan: avoid alloc_pages() when recording stack
2021-11-06 13:30:33 -07:00