Chen Yu 7027423736 genirq/matrix: Exclude managed interrupts in irq_matrix_allocated() ... [ Upstream commit a0b0bad105 ] When a CPU is about to be offlined, x86 validates that all active interrupts which are targeted to this CPU can be migrated to the remaining online CPUs. If not, the offline operation is aborted. The validation uses irq_matrix_allocated() to retrieve the number of vectors which are allocated on the outgoing CPU. The returned number of allocated vectors includes also vectors which are associated to managed interrupts. That's overaccounting because managed interrupts are: - not migrated when the affinity mask of the interrupt targets only the outgoing CPU - migrated to another CPU, but in that case the vector is already pre-allocated on the potential target CPUs and must not be taken into account. As a consequence the check whether the remaining online CPUs have enough capacity for migrating the allocated vectors from the outgoing CPU might fail incorrectly. Let irq_matrix_allocated() return only the number of allocated non-managed interrupts to make this validation check correct. [ tglx: Amend changelog and fixup kernel-doc comment ] Fixes: 2f75d9e1c9 ("genirq: Implement bitmap matrix allocator") Reported-by: Wendy Wang <wendy.wang@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20231020072522.557846-1-yu.c.chen@intel.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-11-20 11:08:13 +01:00
..
bpf	bpf: Fix verifier log for async callback return values	2023-10-19 23:05:34 +02:00
cgroup	cgroup: Remove duplicates in cgroup v1 tasks file	2023-10-19 23:05:37 +02:00
configs	drivers/char: remove /dev/kmem for good	2021-05-07 00:26:34 -07:00
debug	lockdown: also lock down previous kgdb use	2022-05-25 09:57:37 +02:00
dma	dma-debug: don't call __dma_entry_alloc_check_leak() under free_entries_lock	2023-10-06 13:18:14 +02:00
entry	entry/rcu: Check TIF_RESCHED _after_ delayed RCU wake-up	2023-03-30 12:47:51 +02:00
events	perf/core: Fix potential NULL deref	2023-11-08 17:26:41 +01:00
futex	futex: Don't include process MM in futex key on no-MMU	2023-11-20 11:08:13 +01:00
gcov	gcov: add support for checksum field	2022-12-31 13:14:47 +01:00
irq	genirq/matrix: Exclude managed interrupts in irq_matrix_allocated()	2023-11-20 11:08:13 +01:00
kcsan	kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures	2023-07-23 13:47:12 +02:00
livepatch	livepatch: fix race between fork and KLP transition	2022-10-26 12:34:30 +02:00
locking	locking/rtmutex: Fix task->pi_waiters integrity	2023-08-03 10:22:45 +02:00
power	workqueue: Introduce show_one_worker_pool and show_one_workqueue.	2023-05-11 23:00:35 +09:00
printk	printk: Consolidate console deferred printing	2023-09-23 11:09:59 +02:00
rcu	rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()	2023-09-23 11:09:55 +02:00
sched	sched: Fix stop_one_cpu_nowait() vs hotplug	2023-11-20 11:08:13 +01:00
time	timers/nohz: Last resort update jiffies on nohz_full IRQ entry	2023-08-16 18:22:04 +02:00
trace	tracing/kprobes: Fix the description of variable length arguments	2023-11-08 17:26:41 +01:00
.gitignore	.gitignore: prefix local generated files with a slash	2021-05-02 00:43:35 +09:00
acct.c	acct: fix potential integer overflow in encode_comp_t()	2022-12-31 13:14:40 +01:00
async.c	Revert "module, async: async_synchronize_full() on module init iff async is used"	2022-02-23 12:03:07 +01:00
audit.c	audit: improve audit queue handling when "audit=1" on cmdline	2022-02-08 18:34:03 +01:00
audit.h	audit: log AUDIT_TIME_* records only from rules	2022-04-08 14:23:06 +02:00
audit_fsnotify.c	audit: fix potential double free on error path from fsnotify_add_inode_mark	2022-08-31 17:16:33 +02:00
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
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 soft lockup in __audit_inode_child()	2023-09-19 12:22:39 +02:00
backtracetest.c
bounds.c
capability.c
cfi.c	cfi: Fix __cfi_slowpath_diag RCU usage with cpuidle	2022-06-22 14:22:04 +02:00
compat.c	sched_getaffinity: don't assume 'cpumask_size()' is fully initialized	2023-04-05 11:24:53 +02:00
configs.c
context_tracking.c
cpu.c	cpu/hotplug: Do not bail-out in DYING/STARTING sections	2022-12-31 13:14:04 +01:00
cpu_pm.c	PM: cpu: Make notifier chain use a raw_spinlock_t	2021-08-16 18:55:32 +02:00
crash_core.c	kernel/crash_core: suppress unknown crashkernel parameter warning	2021-12-29 12:28:49 +01:00
crash_dump.c
cred.c	ucounts: Base set_cred_ucounts changes on the real user	2022-02-23 12:03:20 +01:00
delayacct.c	delayacct: Add sysctl to enable at runtime	2021-05-12 11:43:25 +02:00
dma.c
exec_domain.c
exit.c	exit: Use READ_ONCE() for all oops/warn limit reads	2023-02-01 08:27:22 +01:00
extable.c
fail_function.c	kernel/fail_function: fix memory leak with using debugfs_lookup()	2023-03-11 13:57:38 +01:00
fork.c	kernel/fork: beware of __put_task_struct() calling context	2023-09-23 11:09:55 +02:00
freezer.c	sched: Add get_current_state()	2021-06-18 11:43:08 +02:00
gen_kheaders.sh	kbuild: clean up ${quiet} checks in shell scripts	2021-05-27 04:01:50 +09:00
groups.c
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
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.c	panic, kexec: make __crash_kexec() NMI safe	2023-04-20 12:13:57 +02:00
kexec_core.c	kexec: fix a memory leak in crash_shrink_memory()	2023-07-23 13:46:52 +02:00
kexec_elf.c
kexec_file.c	kexec: support purgatories with .text.hot sections	2023-06-21 15:59:14 +02:00
kexec_internal.h	panic, kexec: make __crash_kexec() NMI safe	2023-04-20 12:13:57 +02:00
kheaders.c	kheaders: Use array declaration instead of char	2023-05-11 23:00:17 +09:00
kmod.c	modules: add CONFIG_MODPROBE_PATH	2021-05-07 00:26:33 -07:00
kprobes.c	kprobes: Prohibit probing on CFI preamble symbol	2023-09-19 12:22:28 +02:00
ksysfs.c	kexec: turn all kexec_mutex acquisitions into trylocks	2023-04-20 12:13:57 +02:00
kthread.c	kthread: add the helper function kthread_run_on_cpu()	2023-03-30 12:47:42 +02:00
latencytop.c
Makefile	futex: Move to kernel/futex/	2022-12-31 13:14:04 +01:00
module-internal.h
module.c	modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules	2023-09-06 21:28:38 +01:00
module_signature.c
module_signing.c
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: Fix list iterator in padata_do_serial()	2022-12-31 13:14:24 +01:00
panic.c	exit: Use READ_ONCE() for all oops/warn limit reads	2023-02-01 08:27:22 +01:00
params.c	params: lift param_set_uint_minmax to common code	2021-08-16 14:42:22 +02:00
pid.c	kernel/pid.c: implement additional checks upon pidfd_create() parameters	2021-08-10 12:53:07 +02:00
pid_namespace.c	rcu-tasks: Fix synchronize_rcu_tasks() VS zap_pid_ns_processes()	2023-03-10 09:39:09 +01:00
profile.c	profiling: fix shift too large makes kernel panic	2022-08-17 14:24:04 +02:00
ptrace.c	ptrace: Reimplement PTRACE_KILL by always sending SIGKILL	2022-06-09 10:22:29 +02:00
range.c
reboot.c	reboot: Add hardware protection power-off	2021-06-21 13:08:36 +01:00
regset.c
relay.c	relayfs: fix out-of-bounds access in relay_file_read	2023-05-11 23:00:18 +09:00
resource.c	dax/kmem: Fix leak of memory-hotplug resources	2023-03-10 09:40:08 +01:00
resource_kunit.c
rseq.c	rseq: Remove broken uapi field layout on 32-bit little endian	2022-04-08 14:23:10 +02:00
scftorture.c	scftorture: Forgive memory-allocation failure if KASAN	2023-09-23 11:09:55 +02:00
scs.c	scs: Release kasan vmalloc poison in scs_free process	2021-11-18 19:16:29 +01:00
seccomp.c	seccomp: Invalidate seccomp mode to catch death failures	2022-02-16 12:56:38 +01:00
signal.c	signal handling: don't use BUG_ON() for debugging	2022-07-21 21:24:42 +02:00
smp.c	locking/csd_lock: Change csdlock_debug from early_param to __setup	2022-08-17 14:24:24 +02:00
smpboot.c	smpboot: Replace deprecated CPU-hotplug functions.	2021-08-10 14:57:42 +02:00
smpboot.h
softirq.c	timers/nohz: Last resort update jiffies on nohz_full IRQ entry	2023-08-16 18:22:04 +02:00
stackleak.c	gcc-plugins/stackleak: Use noinstr in favor of notrace	2022-02-23 12:03:07 +01:00
stacktrace.c	stacktrace: move filter_irq_stacks() to kernel/stacktrace.c	2022-04-13 20:59:28 +02:00
static_call.c	static_call: Don't make __static_call_return0 static	2022-04-13 20:59:28 +02:00
static_call_inline.c	static_call: Don't make __static_call_return0 static	2022-04-13 20:59:28 +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.c	kernel/sys.c: fix and improve control flow in __sys_setres[ug]id()	2023-04-26 13:51:52 +02:00
sys_ni.c	kernel/sys_ni: add compat entry for fadvise64_64	2022-08-31 17:16:33 +02:00
sysctl-test.c	kernel/sysctl-test: Remove some casts which are no-longer required	2021-06-23 16:41:24 -06:00
sysctl.c	kernel/panic: move panic sysctls to its own file	2023-02-01 08:27:20 +01:00
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: Fix hang during kthread shutdown phase	2023-08-30 16:18:19 +02:00
tracepoint.c	tracepoint: Fix kerneldoc comments	2021-08-16 11:39:51 -04:00
tsacct.c	taskstats: Cleanup the use of task->exit_code	2022-01-27 11:05:35 +01:00
ucount.c	ucounts: Handle wrapping in is_ucounts_overlimit	2022-02-23 12:03:20 +01:00
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-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
user_namespace.c	ucounts: Fix systemd LimitNPROC with private users regression	2022-03-08 19:12:42 +01:00
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.c
utsname_sysctl.c
watch_queue.c	watch_queue: fix IOC_WATCH_QUEUE_SET_SIZE alloc error paths	2023-03-17 08:48:59 +01:00
watchdog.c	watchdog: export lockup_detector_reconfigure	2022-08-25 11:40:43 +02:00
watchdog_hld.c	watchdog/perf: more properly prevent false positives with turbo modes	2023-07-23 13:46:52 +02:00
workqueue.c	workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()	2023-10-19 23:05:35 +02:00
workqueue_internal.h	workqueue: Assign a color to barrier work items	2021-08-17 07:49:10 -10:00