On current arm64 stable 5.10(v5.10.158). If a UCE happnes pud-sized
hugepage, kernel will panic since current memory failure can not handle
this kind of memory failure since commit 31286a8484a8 ("mm: hwpoison:
disable memory error handling on 1GB hugepage")
The latest kernel(v6.0) can handle this UCE since commit 6f4614886baa ("mm,
hwpoison: enable memory error handling on 1GB hugepage"). We are trying to
backport this patchset to stable 5.10, however too many other patches
should be backport since there are huge difference between 5.10 and 6.0.
The full patch list will be shown at the end of this mail.
We do not think backport all of these patches is doable for stable 5.10. Is
there any better way to fix this problem.
The kernel panic call trace:
Kernel panic - not syncing: Fatal hardware error!
CPU: 0 PID: 15 Comm: kworker/0:1 Not tainted 5.10.158_stable_5_10 #1
Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 CS V3.26.01 06/14/2019
Workqueue: kacpi_notify acpi_os_execute_deferred
Call trace:
dump_backtrace+0x0/0x1ec
show_stack+0x20/0x30
dump_stack+0xd0/0x128
panic+0x154/0x36c
__raw_spin_lock_irqsave.constprop.0+0x0/0xb0
ghes_proc+0x148/0x200
ghes_notify_hed+0x58/0xd4
blocking_notifier_call_chain+0x74/0xb0
acpi_hed_notify+0x28/0x3c
acpi_device_notify+0x24/0x30
acpi_ev_notify_dispatch+0x68/0x78
acpi_os_execute_deferred+0x24/0x3c
process_one_work+0x1d4/0x4b0
worker_thread+0x180/0x430
kthread+0x118/0x120
ret_from_fork+0x10/0x18
SMP: stopping secondary CPUs
Kernel Offset: 0x4ed64eb80000 from 0xffff800010000000
PHYS_OFFSET: 0xffffd24300000000
CPU features: 0x00000002,62208a38
Memory Limit: none
Rebooting in 30 seconds..
Our backport list(bug fixes not included):
mm,hwpoison: drain pcplists before bailing out for non-buddy zero-refcount page
mm,hwpoison: take free pages off the buddy freelists
mm,hwpoison: drop unneeded pcplist draining
mm,hwpoison: refactor get_any_page
mm,hwpoison: disable pcplists before grabbing a refcount
mm,hwpoison: remove drain_all_pages from shake_page
hugetlb: use page.private for hugetlb specific page flags
hugetlb: convert page_huge_active() HPageMigratable flag
hugetlb: convert PageHugeTemporary() to HPageTemporary flag
hugetlb: convert PageHugeFreed to HPageFreed flag
mm,hwpoison: fix race with hugetlb page allocation
mm: hugetlb: gather discrete indexes of tail page
hugetlb: create remove_hugetlb_page() to separate functionality
mm,hwpoison: make get_hwpoison_page() call get_any_page()
mm/hwpoison: disable pcp for page_handle_poison()
mm/hwpoison: mf_mutex for soft offline and unpoison
mm/hwpoison: remove MF_MSG_BUDDY_2ND and MF_MSG_POISONED_HUGE
mm/hwpoison: fix unpoison_memory()
mm/memory-failure.c: fix race with changing page compound again
mm/hwpoison: fix race between hugetlb free/demotion and memory_failure_hugetlb()
mm/hugetlb: check gigantic_page_runtime_supported() in return_unused_surplus_pages()
mm/hugetlb: make pud_huge() and follow_huge_pud() aware of non-present pud entry
mm, hwpoison, hugetlb: support saving mechanism of raw error pages
mm/memory-failure.c: simplify num_poisoned_pages_dec
mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage
mm, hwpoison: set PG_hwpoison for busy hugetlb pages
mm, hwpoison: make __page_handle_poison returns int
mm, hwpoison: skip raw hwpoison page in freeing 1GB hugepage
