Linux kernel bug fix: mm/ptdump: take the memory hotplug lock inside ptdump_walk_pgd()
Subsystem: arch/arm64 (arch/arm64/mm/ptdump_debugfs.c)
Bug type: race-condition, severity: high
Keywords: race condition
Files changed: arch/arm64/mm/ptdump_debugfs.c;arch/riscv/mm/ptdump.c;arch/s390/mm/dump_pagetables.c;mm/ptdump.c
Introduced by Anshuman Khandual on 2020-03-04 15:35:44 +0000; fixed by Anshuman Khandual on 2025-07-09 22:42:20 -0700 (lifetime: 1953 days)