Pratyush Yadav b05addf6f0 kho: warn and exit when unpreserved page wasn't preserved ... Calling __kho_unpreserve() on a pair of (pfn, end_pfn) that wasn't preserved is a bug. Currently, if that is done, the physxa or bits can be NULL. This results in a soft lockup since a NULL physxa or bits results in redoing the loop without ever making any progress. Return when physxa or bits are not found, but WARN first to loudly indicate invalid behaviour. Link: https://lkml.kernel.org/r/20251103180235.71409-3-pratyush@kernel.org Fixes: fc33e4b44b ("kexec: enable KHO support for memory preservation") Signed-off-by: Pratyush Yadav <pratyush@kernel.org> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Graf <graf@amazon.com> Cc: Baoquan He <bhe@redhat.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2025-11-09 21:19:47 -08:00
..
bpf	bpf: Conditionally include dynptr copy kfuncs	2025-10-24 09:44:47 -07:00
cgroup	cgroup: Fixes for v6.18-rc2	2025-10-20 09:41:27 -10:00
configs	kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI	2025-09-24 14:29:14 -07:00
debug	kdb: remove redundant check for scancode 0xe0	2025-09-20 21:19:09 +01:00
dma	dma-debug: don't report false positives with DMA_BOUNCE_UNALIGNED_KMALLOC	2025-10-15 13:24:33 -07:00
entry	hyperv-next for v6.18	2025-10-07 08:40:15 -07:00
events	perf/core: Fix system hang caused by cpu-clock usage	2025-11-03 11:04:19 +01:00
futex	futex: Optimize per-cpu reference counting	2025-11-06 12:30:54 +01:00
gcov	gcov: add support for GCC 15	2025-11-09 21:19:44 -08:00
irq	genirq/manage: Add buslock back in to enable_irq()	2025-10-24 11:38:39 +02:00
kcsan	Kernel Concurrency Sanitizer (KCSAN) updates for v6.18	2025-10-02 08:31:44 -07:00
livepatch	sched,livepatch: Untangle cond_resched() and live-patching	2025-05-14 13:16:24 +02:00
locking	locking/local_lock: Introduce local_lock_is_locked().	2025-09-29 09:42:35 +02:00
module	kcfi: Rename CONFIG_CFI_CLANG to CONFIG_CFI	2025-09-24 14:29:14 -07:00
power	PM: sleep: Allow pm_restrict_gfp_mask() stacking	2025-10-29 18:55:32 +01:00
printk	printk changes for 6.18	2025-10-04 11:13:11 -07:00
rcu	hyperv-next for v6.18	2025-10-07 08:40:15 -07:00
sched	sched/fair: Prevent cfs_rq from being unthrottled with zero runtime_remaining	2025-11-06 12:30:52 +01:00
time	timekeeping: Fix aux clocks sysfs initialization loop bound	2025-10-20 19:56:12 +02:00
trace	Fixes for tracing:	2025-11-07 08:07:11 -08:00
unwind	unwind: Finish up unwind when a task exits	2025-07-31 10:20:11 -04:00
.gitignore	kheaders: rebuild kheaders_data.tar.xz when a file is modified within a minute	2025-06-24 20:30:37 +09:00
acct.c	kernel/acct.c: saner struct file treatment	2025-09-27 20:13:56 -04:00
async.c
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
audit.c	audit: fix skb leak when audit rate limit is exceeded	2025-09-10 19:55:00 -04:00
audit.h	audit: create audit_stamp structure	2025-08-30 10:15:28 -04:00
auditfilter.c	audit/stable-6.18 PR 20250926	2025-09-30 08:22:16 -07:00
auditsc.c	audit: add record for multiple object contexts	2025-08-30 10:15:30 -04:00
backtracetest.c
bounds.c
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_pm.c
cpu.c	cpu: Remove obsolete comment from takedown_cpu()	2025-08-06 22:48:12 +02:00
crash_core_test.c	crash: add KUnit tests for crash_exclude_mem_range	2025-09-13 17:32:55 -07:00
crash_core.c	crash: add KUnit tests for crash_exclude_mem_range	2025-09-13 17:32:55 -07:00
crash_dump_dm_crypt.c	crash_dump: retrieve dm crypt keys in kdump kernel	2025-05-21 10:48:21 -07:00
crash_reserve.c	kdump: implement reserve_crashkernel_cma	2025-07-19 19:08:23 -07:00
cred.c	copy_process: pass clone_flags as u64 across calltree	2025-09-01 15:31:34 +02:00
delayacct.c	delayacct: remove redundant code and adjust indentation	2025-05-27 19:40:33 -07:00
dma.c
elfcorehdr.c
exec_domain.c
exit.c	task_stack.h: clean-up stack_not_used() implementation	2025-09-21 14:22:00 -07:00
exit.h
extable.c
fail_function.c
fork.c	Patch series in this pull request:	2025-10-02 18:44:54 -07:00
freezer.c	mm/oom_kill: thaw the entire OOM victim process	2025-09-21 14:22:35 -07:00
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: dump blocker task if it is not hung	2025-09-13 17:32:43 -07:00
iomem.c
irq_work.c
jump_label.c
kallsyms_internal.h
kallsyms_selftest.c	kallsyms: use kmalloc_array() instead of kmalloc()	2025-09-28 11:36:14 -07:00
kallsyms_selftest.h
kallsyms.c	bpf: Clean up individual BTF_ID code	2025-07-16 18:34:42 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.kexec	kho: warn and fail on metadata or preserved memory in scratch area	2025-11-09 21:19:41 -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
kcov.c	kcov: use write memory barrier after memcpy() in kcov_move_area()	2025-09-13 17:32:44 -07:00
kexec_core.c	kexec_core: remove redundant 0 value initialization	2025-09-13 17:32:49 -07:00
kexec_elf.c
kexec_file.c	x86/kexec: carry forward the boot DTB on kexec	2025-09-13 17:32:43 -07:00
kexec_handover_debug.c	kho: warn and fail on metadata or preserved memory in scratch area	2025-11-09 21:19:41 -08:00
kexec_handover_internal.h	kho: warn and fail on metadata or preserved memory in scratch area	2025-11-09 21:19:41 -08:00
kexec_handover.c	kho: warn and exit when unpreserved page wasn't preserved	2025-11-09 21:19:47 -08:00
kexec_internal.h	kexec: enable CMA based contiguous allocation	2025-08-02 12:01:38 -07:00
kexec.c	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	stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth	2025-07-21 21:40:39 -07:00
ksyms_common.c
ksysfs.c
kthread.c	ipvs: Fix estimator kthreads preferred affinity	2025-08-13 08:34:33 +02:00
latencytop.c
Makefile	kho: warn and fail on metadata or preserved memory in scratch area	2025-11-09 21:19:41 -08:00
module_signature.c
notifier.c
nscommon.c	ns: drop assert	2025-09-25 09:23:54 +02:00
nsproxy.c	namespace-6.18-rc1	2025-09-29 11:20:29 -07:00
nstree.c	ns: move ns type into struct ns_common	2025-09-25 09:23:54 +02:00
padata.c	padata: WQ_PERCPU added to alloc_workqueue users	2025-09-13 12:11:06 +08:00
panic.c	panic: remove CONFIG_PANIC_ON_OOPS_VALUE	2025-09-28 11:36:13 -07:00
params.c	params: Replace deprecated strcpy() with strscpy() and memcpy()	2025-08-16 21:47:25 +02:00
pid_namespace.c	namespace-6.18-rc1	2025-09-29 11:20:29 -07:00
pid_sysctl.h
pid.c	namespace-6.18-rc1	2025-09-29 11:20:29 -07:00
profile.c
ptrace.c	ptrace: introduce PTRACE_SET_SYSCALL_INFO request	2025-05-11 17:48:15 -07:00
range.c
reboot.c
regset.c
relay.c	relayfs: support a counter tracking if data is too big to write	2025-07-09 22:57:52 -07:00
resource_kunit.c
resource.c	resource: improve child resource handling in release_mem_region_adjustable()	2025-09-21 14:22:34 -07:00
rseq.c	rseq: Protect event mask against membarrier IPI	2025-09-13 19:51:59 +02:00
scftorture.c
scs.c
seccomp.c	Performance events updates for v6.18:	2025-09-30 11:11:21 -07:00
signal.c	signal: Fix memory leak for PIDFD_SELF* sentinels	2025-08-19 13:51:28 +02:00
smp.c	smp: Fix up and expand the smp_call_function_many() kerneldoc	2025-09-18 22:21:28 +02:00
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_inline.c
static_call.c
stop_machine.c	sched/core: Fix migrate_swap() vs. hotplug	2025-07-01 15:02:03 +02:00
sys_ni.c	uprobes/x86: Add uprobe syscall to speed up uprobe	2025-08-21 20:09:20 +02:00
sys.c	Patch series in this pull request:	2025-10-02 18:44:54 -07:00
sysctl-test.c
sysctl.c	sysctl: rename kern_table -> sysctl_subsys_table	2025-07-23 11:56:02 +02:00
task_work.c
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_namespace.c	ns: move ns type into struct ns_common	2025-09-25 09:23:54 +02:00
user-return-notifier.c
user.c	ns: move ns type into struct ns_common	2025-09-25 09:23:54 +02:00
utsname_sysctl.c
utsname.c	namespace-6.18-rc1	2025-09-29 11:20:29 -07:00
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	crash: export PAGE_UNACCEPTED_MAPCOUNT_VALUE to vmcoreinfo	2025-05-11 17:54:04 -07:00
watch_queue.c
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
watchdog.c	watchdog: skip checks when panic is in progress	2025-09-13 17:32:53 -07:00
workqueue_internal.h
workqueue.c	workqueue: WQ_PERCPU added to alloc_workqueue users	2025-09-16 10:33:53 -10:00