Sebastian Andrzej Siewior c94291914b cpu: Make atomic hotplug callbacks run with interrupts disabled on UP ... On SMP systems the CPU hotplug callbacks in the "starting" range are invoked while the CPU is brought up and interrupts are still disabled. Callbacks which are added later are invoked via the hotplug-thread on the target CPU and interrupts are explicitly disabled. In the UP case callbacks which are added later are invoked directly without the thread indirection. This is in principle okay since there is just one CPU but those callbacks are invoked with interrupt disabled code. That's incorrect as those callbacks assume interrupt disabled context. Disable interrupts before invoking the callbacks on UP if the state is atomic and interrupts are expected to be disabled. The "save" part is required because this is also invoked early in the boot process while interrupts are disabled and must not be enabled prematurely. Fixes: 06ddd17521 ("sched/smp: Always define is_percpu_thread() and scheduler_ipi()") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://patch.msgid.link/20251127144723.ev9DuXXR@linutronix.de		2025-12-10 15:49:11 +09:00
..
bpf	Some filesystems use a kinda-sorta controlled dentry refcount leak to pin	2025-12-05 14:36:21 -08:00
cgroup	Significant patch series in this merge are as follows:	2025-12-05 13:52:43 -08:00
configs	hung_task: panic when there are more than N hung tasks at the same time	2025-11-12 10:00:14 -08:00
debug	kdb: Adapt kdb_msg_write to work with NBCON consoles	2025-10-24 12:56:20 +02:00
dma	dma-mapping updates for Linux 6.19:	2025-12-06 09:25:05 -08:00
entry	rseq: Switch to TIF_RSEQ if supported	2025-11-04 08:35:37 +01:00
events	Performance events changes for v6.19:	2025-12-01 20:42:01 -08:00
futex	Scoped user mode access and related changes:	2025-12-02 08:01:39 -08:00
gcov	gcov: add support for GCC 15	2025-11-09 21:19:44 -08:00
irq	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
kcsan	Kernel Concurrency Sanitizer (KCSAN) updates for v6.18	2025-10-02 08:31:44 -07:00
livepatch	livepatching changes for 6.19	2025-12-03 13:46:48 -08:00
liveupdate	kho: fix restoring of contiguous ranges of order-0 pages	2025-11-27 14:24:44 -08:00
locking	RCU pull request for v6.19	2025-12-03 12:18:07 -08:00
module	Significant patch series in this pull request:	2025-12-06 14:01:20 -08:00
power	Merge branches 'pm-qos' and 'pm-tools'	2025-11-28 16:50:45 +01:00
printk	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
rcu	RCU pull request for v6.19	2025-12-03 12:18:07 -08:00
sched	Miscellaneous scheduler fixes/cleanups:	2025-12-06 12:31:21 -08:00
time	soc: driver updates for 6.19	2025-12-05 17:29:04 -08:00
trace	tracing fixes for v6.19:	2025-12-06 13:49:40 -08:00
unwind	unwind_user/x86: Teach FP unwind about start of function	2025-10-29 10:29:58 +01:00
.gitignore	kheaders: rebuild kheaders_data.tar.xz when a file is modified within a minute	2025-06-24 20:30:37 +09:00
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.kexec	liveupdate: kho: move to kernel/liveupdate	2025-11-27 14:24:33 -08:00
Kconfig.locks	…
Kconfig.preempt	softirq: Allow to drop the softirq-BKL lock on PREEMPT_RT	2025-09-17 16:25:41 +02:00
Makefile	liveupdate: kho: move to kernel/liveupdate	2025-11-27 14:24:33 -08:00
acct.c	act: use credential guards in acct_write_process()	2025-11-04 12:36:49 +01:00
async.c	…
audit.c	audit: fix skb leak when audit rate limit is exceeded	2025-09-10 19:55:00 -04:00
audit.h	audit: fix comment misindentation in audit.h	2025-10-22 19:28:06 -04:00
audit_fsnotify.c	VFS/audit: introduce kern_path_parent() for audit	2025-09-23 12:37:35 +02:00
audit_tree.c	mount-related stuff for this cycle	2025-10-03 10:19:44 -07:00
audit_watch.c	VFS/audit: introduce kern_path_parent() for audit	2025-09-23 12:37:35 +02:00
auditfilter.c	audit: Use kzalloc() instead of kmalloc()/memset() in audit_krule_to_data()	2025-11-07 16:38:34 -05:00
auditsc.c	audit: merge loops in __audit_inode_child()	2025-11-07 16:50:42 -05:00
backtracetest.c	…
bounds.c	x86/asm: Remove ANNOTATE_DATA_SPECIAL usage	2025-12-03 16:53:19 +01:00
capability.c	…
cfi.c	cfi: Move BPF CFI types and helpers to generic code	2025-07-31 18:23:53 -07:00
compat.c	…
configs.c	…
context_tracking.c	…
cpu.c	cpu: Make atomic hotplug callbacks run with interrupts disabled on UP	2025-12-10 15:49:11 +09:00
cpu_pm.c	syscore: Pass context data to callbacks	2025-11-14 10:01:52 +01:00
crash_core.c	crash: fix crashkernel resource shrink	2025-11-15 10:52:01 -08:00
crash_core_test.c	crash: add KUnit tests for crash_exclude_mem_range	2025-09-13 17:32:55 -07:00
crash_dump_dm_crypt.c	…
crash_reserve.c	crash: let architecture decide crash memory export to iomem_resource	2025-11-12 10:00:15 -08:00
cred.c	kernel-6.19-rc1.cred	2025-12-01 13:45:41 -08:00
delayacct.c	…
dma.c	…
elfcorehdr.c	…
exec_domain.c	…
exit.c	Significant patch series in this pull request:	2025-12-06 14:01:20 -08:00
exit.h	…
extable.c	…
fail_function.c	…
fork.c	Significant patch series in this pull request:	2025-12-06 14:01:20 -08:00
freezer.c	freezer: Clarify that only cgroup1 freezer uses PM freezer	2025-10-30 20:10:27 +01:00
gen_kheaders.sh	kheaders: make it possible to override TAR	2025-08-06 10:23:36 +09:00
groups.c	…
hung_task.c	hung_task: add hung_task_sys_info sysctl to dump sys info on task-hung	2025-11-20 14:03:43 -08:00
iomem.c	…
irq_work.c	…
jump_label.c	…
kallsyms.c	kallsyms: Fix wrong "big" kernel symbol type read from procfs	2025-11-24 16:56:24 +01:00
kallsyms_internal.h	…
kallsyms_selftest.c	kallsyms: use kmalloc_array() instead of kmalloc()	2025-09-28 11:36:14 -07:00
kallsyms_selftest.h	…
kcmp.c	…
kcov.c	kcov: use write memory barrier after memcpy() in kcov_move_area()	2025-09-13 17:32:44 -07:00
kexec.c	kexec: enable CMA based contiguous allocation	2025-08-02 12:01:38 -07:00
kexec_core.c	kexec: move sysfs entries to /sys/kernel/kexec	2025-11-27 14:24:42 -08:00
kexec_elf.c	…
kexec_file.c	x86/kexec: carry forward the boot DTB on kexec	2025-09-13 17:32:43 -07:00
kexec_internal.h	kexec: enable CMA based contiguous allocation	2025-08-02 12:01:38 -07:00
kheaders.c	…
kprobes.c	kprobes: Add missing kerneldoc for __get_insn_slot	2025-07-15 18:45:34 +09:00
kstack_erase.c	sysctl: remove __user qualifier from stack_erasing_sysctl buffer argument	2025-11-27 15:44:53 +01:00
ksyms_common.c	…
ksysfs.c	kexec: move sysfs entries to /sys/kernel/kexec	2025-11-27 14:24:42 -08:00
kthread.c	sched: Rename do_set_cpus_allowed()	2025-10-16 11:13:53 +02:00
latencytop.c	…
module_signature.c	…
notifier.c	…
nscommon.c	ns: rename is_initial_namespace()	2025-11-11 10:01:31 +01:00
nsproxy.c	nsproxy: fix free_nsproxy() and simplify create_new_namespaces()	2025-11-14 13:10:38 +01:00
nstree.c	nstree: fix kernel-doc comments for internal functions	2025-11-14 13:10:38 +01:00
padata.c	padata: remove __padata_list_init()	2025-11-14 18:15:49 +08:00
panic.c	Significant patch series in this pull request:	2025-12-06 14:01:20 -08:00
params.c	params: Replace deprecated strcpy() with strscpy() and memcpy()	2025-08-16 21:47:25 +02:00
pid.c	ns: drop custom reference count initialization for initial namespaces	2025-11-11 10:01:32 +01:00
pid_namespace.c	pid: rely on common reference count behavior	2025-11-11 10:01:32 +01:00
pid_sysctl.h	…
profile.c	…
ptrace.c	rseq: Introduce struct rseq_data	2025-11-04 08:30:50 +01:00
range.c	…
reboot.c	…
regset.c	…
relay.c	relay: update relay to use mmap_prepare	2025-11-16 17:28:11 -08:00
resource.c	Reinstate "resource: avoid unnecessary lookups in find_next_iomem_res()"	2025-11-27 14:24:45 -08:00
resource_kunit.c	…
rseq.c	rseq: Switch to fast path processing on exit to user	2025-11-04 08:34:39 +01:00
scftorture.c	…
scs.c	scs: fix a wrong parameter in __scs_magic	2025-11-12 10:00:13 -08:00
seccomp.c	Performance events updates for v6.18:	2025-09-30 11:11:21 -07:00
signal.c	signal: Move MMCID exit out of sighand lock	2025-11-25 19:45:40 +01:00
smp.c	smp: Introduce a helper function to check for pending IPIs	2025-11-19 18:06:50 +01:00
smpboot.c	sched/smp: Use the SMP version of idle_thread_set_boot_cpu()	2025-06-13 08:47:20 +02:00
smpboot.h	…
softirq.c	softirq: Allow to drop the softirq-BKL lock on PREEMPT_RT	2025-09-17 16:25:41 +02:00
stacktrace.c	…
static_call.c	…
static_call_inline.c	…
stop_machine.c	sched/core: Fix migrate_swap() vs. hotplug	2025-07-01 15:02:03 +02:00
sys.c	Patch series in this pull request:	2025-10-02 18:44:54 -07:00
sys_ni.c	uprobes/x86: Add uprobe syscall to speed up uprobe	2025-08-21 20:09:20 +02:00
sysctl-test.c	…
sysctl.c	sysctl: Wrap do_proc_douintvec with the public function proc_douintvec_conv	2025-11-27 15:45:38 +01:00
task_work.c	task_work: Fix NMI race condition	2025-10-29 10:29:54 +01:00
taskstats.c	…
torture.c	torture: Delay CPU-hotplug operations until boot completes	2025-08-14 15:26:30 -07:00
tracepoint.c	…
tsacct.c	pid: change bacct_add_tsk() to use task_ppid_nr_ns()	2025-08-19 13:38:20 +02:00
ucount.c	ucount: use atomic_long_try_cmpxchg() in atomic_long_inc_below()	2025-08-02 12:01:38 -07:00
uid16.c	…
uid16.h	…
umh.c	…
up.c	…
user-return-notifier.c	…
user.c	ns: drop custom reference count initialization for initial namespaces	2025-11-11 10:01:32 +01:00
user_namespace.c	ns: move ns type into struct ns_common	2025-09-25 09:23:54 +02:00
utsname.c	namespace-6.18-rc1	2025-09-29 11:20:29 -07:00
utsname_sysctl.c	…
vhost_task.c	vhost: Take a reference on the task in struct vhost_task.	2025-09-21 17:44:20 -04:00
vmcore_info.c	vmcoreinfo: track and log recoverable hardware errors	2025-11-27 14:24:44 -08:00
watch_queue.c	watch_queue: Use local kmap in post_one_notification()	2025-11-19 12:17:28 +01:00
watchdog.c	Significant patch series in this pull request:	2025-12-06 14:01:20 -08:00
watchdog_buddy.c	watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu()	2025-07-31 11:28:03 -04:00
watchdog_perf.c	watchdog: skip checks when panic is in progress	2025-09-13 17:32:53 -07:00
workqueue.c	workqueue: Don't rely on wq->rescuer to stop rescuer	2025-11-21 09:45:36 -10:00
workqueue_internal.h	…