crash64> bt
...
#20 [ffffffc00932be70] do_el0_svc at ffffffd174227f30
#21 [ffffffc00932be80] el0_svc at ffffffd174d4d328
#22 [ffffffc00932bea0] el0t_64_sync_handler at ffffffd174d4da20
#23 [ffffffc00932bfe0] el0t_64_sync at ffffffd17421160c
PC: 0000007fa528cb20 LR: 0000007fa5237f94 SP: 0000007fc3fc7ad0
X29: 0000007fc3fc7ad0 X28: 000000557d72f000 X27: 0000000000000000
X26: 000000557d6f5000 X25: 0000007fa5339668 X24: 000000000000000a
X23: 00000055b19f3330 X22: 0000007fa53cb740 X21: 0000007fa5339580
X20: 00000055b19f3330 X19: 0000000000000001 X18: 0000000000000000
X17: 0000007fa5234800 X16: 0000007fa52393a0 X15: 0000000000000000
X14: 0000000000000002 X13: 0000000000000001 X12: 0000000000000000
X11: 0000000000000000 X10: 0000000000000007 X9: 000000000004804c
X8: 0000000000000040 X7: 0000000000001030 X6: 0000000000000009
X5: 0001555100045400 X4: 0000000040100401 X3: 0000007fa53cb040
X2: 000000000000000a X1: 00000055b19f3330 X0: 0000000000000001
ORIG_X0: 0000000000000001 SYSCALLNO: 40 PSTATE: 20000000
crash64> vtop 0000007fc3fc7ad0
7fc3fc7ad0: 7fc3fc7
crash64> vtop 0000007fc3fc7ad0
VIRTUAL PHYSICAL
7fc3fc7ad0 4aafead0
PAGE DIRECTORY: ffffff806cf0b000
PGD: ffffff806cf0bff8 => 80000006cf0c003
PMD: ffffff806cf0c0f8 => 8000000711c9003
PTE: ffffff80711c9e38 => e800004aafef43
PAGE: 4aafe000
PTE PHYSICAL FLAGS
e800004aafef43 4aafe000 (VALID|USER|SHARED|AF|NG|PXN|UXN|DIRTY)
VMA START END FLAGS FILE
ffffff80685fb730 7fc3fa8000 7fc3fc9000 200100173
PAGE PHYSICAL MAPPING INDEX CNT FLAGS
fffffffe012abf80 4aafe000 ffffff8069edc2d9 7fffffe 1 4000000000080014 uptodate,lru,swapbacked
crash64> kmem ffffff8069edc2d9
CACHE OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME
ffffff804002a600 96 3535 5148 132 4k anon_vma
SLAB MEMORY NODE TOTAL ALLOCATED FREE
fffffffe01a7b700 ffffff8069edc000 0 39 19 20
FREE / [ALLOCATED]
[ffffff8069edc2d8]
PAGE PHYSICAL MAPPING INDEX CNT FLAGS
fffffffe01a7b700 69edc000 ffffff804002a600 0 1 4000000000000200 slab
crash64> kmem ffffff8069edc2e0
CACHE OBJSIZE ALLOCATED TOTAL SLABS SSIZE NAME
ffffff804002a600 96 3535 5148 132 4k anon_vma
SLAB MEMORY NODE TOTAL ALLOCATED FREE
fffffffe01a7b700 ffffff8069edc000 0 39 19 20
FREE / [ALLOCATED]
[ffffff8069edc2d8]
PAGE PHYSICAL MAPPING INDEX CNT FLAGS
fffffffe01a7b700 69edc000 ffffff804002a600 0 1 4000000000000200 slab
(struct anon_vma *) (struct anon_vma*)0xffffff8069edc2d8 = 0xFFFFFF8069EDC2D8 -> (
(struct anon_vma *) root = 0xFFFFFF8069EDC2D8,
(struct rw_semaphore) rwsem = ((atomic_long_t) count = ((s64) counter = 0x0), (atomic
(atomic_t) refcount = ((int) counter = 0x1),
(long unsigned int) num_children = 0x1,
(long unsigned int) num_active_vmas = 0x1,
(struct anon_vma *) parent = 0xFFFFFF8069EDC2D8,
(struct rb_root_cached) rb_root = ((struct rb_root) rb_root = ((struct rb_node *) rb_
In case of anon page, struct page->mapping is pointing to ( &(struct anon_vma) + 1 )
'리눅스 커널의 구조와 원리 > 14. 메모리 관리' 카테고리의 다른 글
| [Linux kernel] Quick Review over OOM(Out of Memory) Killer routine (0) | 2023.09.09 |
|---|---|
| [mm] 'vm_flags' of 'struct vm_area_struct' (2) | 2023.09.07 |
| [mm] OOM Killer log and kernel code review (0) | 2023.08.06 |
| [MM] 페이지 엔트리 속성 (PTE) 매크로 (0) | 2023.08.02 |
| [Linux] mm: memory layout (0) | 2023.07.30 |
