Dump of assembler code for function gather_bootmem_prealloc: mm/hugetlb.c: 3292 { 0xffff800081ae0f08 <+0>: d503233f paciasp 0xffff800081ae0f0c <+4>: d10203ff sub sp, sp, #0x80 0xffff800081ae0f10 <+8>: a9027bfd stp x29, x30, [sp, #32] 0xffff800081ae0f14 <+12>: a9036ffc stp x28, x27, [sp, #48] 0xffff800081ae0f18 <+16>: a90467fa stp x26, x25, [sp, #64] 0xffff800081ae0f1c <+20>: a9055ff8 stp x24, x23, [sp, #80] 0xffff800081ae0f20 <+24>: a90657f6 stp x22, x21, [sp, #96] 0xffff800081ae0f24 <+28>: a9074ff4 stp x20, x19, [sp, #112] 0xffff800081ae0f28 <+32>: 910083fd add x29, sp, #0x20 0xffff800081ae0f2c <+36>: d5384108 mrs x8, sp_el0 3294 struct huge_bootmem_page *m; 3295 struct hstate *h, *prev_h = NULL; 3296 3297 list_for_each_entry(m, &huge_boot_pages, list) { 0xffff800081ae0f30 <+40>: f00007a9 adrp x9, 0xffff800081bd7000 0xffff800081ae0f34 <+44>: f9423d08 ldr x8, [x8, #1144] 0xffff800081ae0f38 <+48>: aa1f03e0 mov x0, xzr 0xffff800081ae0f3c <+52>: 910023f5 add x21, sp, #0x8 0xffff800081ae0f40 <+56>: d2e00036 mov x22, #0x1000000000000 // #281474976710656 0xffff800081ae0f44 <+60>: b25657f7 mov x23, #0xfffffc0000000000 // #-4398046511104 0xffff800081ae0f48 <+64>: 52802018 mov w24, #0x100 // #256 0xffff800081ae0f4c <+68>: f81f83a8 stur x8, [x29, #-8] 0xffff800081ae0f50 <+72>: 5280003a mov w26, #0x1 // #1 0xffff800081ae0f54 <+76>: f946dd39 ldr x25, [x9, #3512] 0xffff800081ae0f58 <+80>: d503201f nop 0xffff800081ae0f5c <+84>: 107b72fb adr x27, 0xffff800081bd7db8 3293 LIST_HEAD(folio_list); 0xffff800081ae0f60 <+88>: a900d7f5 stp x21, x21, [sp, #8] 3298 struct page *page = virt_to_page(m); 3299 struct folio *folio = (void *)page; 3300 3301 h = m->hstate; 0xffff800081ae0f64 <+92>: f9400b33 ldr x19, [x25, #16] 3302 /* 3303 * It is possible to have multiple huge page sizes (hstates) 3304 * in this list. If so, process each size separately. 3305 */ 3306 if (h != prev_h && prev_h != NULL) 0xffff800081ae0f68 <+96>: b40000a0 cbz x0, 0xffff800081ae0f7c 0xffff800081ae0f6c <+100>: eb00027f cmp x19, x0 0xffff800081ae0f70 <+104>: 54000060 b.eq 0xffff800081ae0f7c // b.none 3307 prep_and_add_allocated_folios(prev_h, &folio_list); 0xffff800081ae0f74 <+108>: 910023e1 add x1, sp, #0x8 0xffff800081ae0f78 <+112>: 979ecd63 bl 0xffff800080294504 0xffff800081ae0f7c <+116>: 8b160328 add x8, x25, x22 0xffff800081ae0f80 <+120>: d34cfd08 lsr x8, x8, #12 0xffff800081ae0f84 <+124>: 8b081af4 add x20, x23, x8, lsl #6 ./include/linux/atomic/atomic-arch-fallback.h: 444 return arch_atomic_read(v); 0xffff800081ae0f88 <+128>: b9403688 ldr w8, [x20, #52] mm/hugetlb.c: 3311 WARN_ON(folio_ref_count(folio) != 1); 0xffff800081ae0f8c <+132>: 7100051f cmp w8, #0x1 0xffff800081ae0f90 <+136>: 54000581 b.ne 0xffff800081ae1040 // b.any 3312 3313 hugetlb_folio_init_vmemmap(folio, h, 0xffff800081ae0f94 <+140>: aa1403e0 mov x0, x20 0xffff800081ae0f98 <+144>: aa1303e1 mov x1, x19 0xffff800081ae0f9c <+148>: 940001a2 bl 0xffff800081ae1624 ./arch/arm64/include/asm/alternative-macros.h: 232 asm_volatile_goto( 0xffff800081ae0fa0 <+152>: 1400002a b 0xffff800081ae1048 ./arch/arm64/include/asm/atomic_lse.h: 132 ATOMIC64_OP(or, stset) 0xffff800081ae0fa4 <+156>: 91010288 add x8, x20, #0x40 0xffff800081ae0fa8 <+160>: f838311f stset x24, [x8] mm/hugetlb.c: 1969 INIT_LIST_HEAD(&folio->lru); 0xffff800081ae0fac <+164>: 9100229c add x28, x20, #0x8 ./include/linux/list.h: 37 WRITE_ONCE(list->next, list); 0xffff800081ae0fb0 <+168>: f900069c str x28, [x20, #8] 38 WRITE_ONCE(list->prev, list); 0xffff800081ae0fb4 <+172>: f9000a9c str x28, [x20, #16] ./include/linux/hugetlb.h: 753 folio->_hugetlb_subpool = subpool; 0xffff800081ae0fb8 <+176>: f9004a9f str xzr, [x20, #144] ./include/asm-generic/bitops/generic-non-atomic.h: 128 return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1))); 0xffff800081ae0fbc <+180>: f9400288 ldr x8, [x20] ./include/linux/mm.h: 1070 if (!folio_test_large(folio)) 0xffff800081ae0fc0 <+184>: 363000a8 tbz w8, #6, 0xffff800081ae0fd4 ./include/linux/hugetlb_cgroup.h: 94 if (folio_order(folio) < HUGETLB_CGROUP_MIN_ORDER) 0xffff800081ae0fc4 <+188>: 39410288 ldrb w8, [x20, #64] 0xffff800081ae0fc8 <+192>: 721f191f tst w8, #0xfe 0xffff800081ae0fcc <+196>: 54000040 b.eq 0xffff800081ae0fd4 // b.none 98 else 99 folio->_hugetlb_cgroup = h_cg; 0xffff800081ae0fd0 <+200>: f9004e9f str xzr, [x20, #152] ./include/asm-generic/bitops/generic-non-atomic.h: 128 return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1))); 0xffff800081ae0fd4 <+204>: f9400288 ldr x8, [x20] ./include/linux/mm.h: 1070 if (!folio_test_large(folio)) 0xffff800081ae0fd8 <+208>: 363000a8 tbz w8, #6, 0xffff800081ae0fec ./include/linux/hugetlb_cgroup.h: 94 if (folio_order(folio) < HUGETLB_CGROUP_MIN_ORDER) 0xffff800081ae0fdc <+212>: 39410288 ldrb w8, [x20, #64] 0xffff800081ae0fe0 <+216>: 721f191f tst w8, #0xfe 0xffff800081ae0fe4 <+220>: 54000040 b.eq 0xffff800081ae0fec // b.none 95 return; 96 if (rsvd) 97 folio->_hugetlb_cgroup_rsvd = h_cg; 0xffff800081ae0fe8 <+224>: f900529f str xzr, [x20, #160] ./include/asm-generic/bitops/generic-non-atomic.h: 128 return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1))); 0xffff800081ae0fec <+228>: f9401688 ldr x8, [x20, #40] mm/hugetlb.c: 3317 if (!HPageVmemmapOptimized(&folio->page)) 0xffff800081ae0ff0 <+232>: 362001c8 tbz w8, #4, 0xffff800081ae1028 ./include/linux/list.h: 169 __list_add(new, head, head->next); 0xffff800081ae0ff4 <+236>: f94007e8 ldr x8, [sp, #8] mm/hugetlb.c: 3328 adjust_managed_page_count(page, pages_per_huge_page(h)); 0xffff800081ae0ff8 <+240>: aa1403e0 mov x0, x20 ./include/linux/list.h: 153 next->prev = new; 0xffff800081ae0ffc <+244>: f900051c str x28, [x8, #8] 154 new->next = next; 0xffff800081ae1000 <+248>: a900d688 stp x8, x21, [x20, #8] 155 new->prev = prev; 156 WRITE_ONCE(prev->next, new); 0xffff800081ae1004 <+252>: f90007fc str x28, [sp, #8] ./include/linux/hugetlb.h: 808 return 1 << h->order; 0xffff800081ae1008 <+256>: b9402a68 ldr w8, [x19, #40] 0xffff800081ae100c <+260>: 9ac82341 lsl x1, x26, x8 mm/hugetlb.c: 3328 adjust_managed_page_count(page, pages_per_huge_page(h)); 0xffff800081ae1010 <+264>: 979e566a bl 0xffff8000802769b8 3297 list_for_each_entry(m, &huge_boot_pages, list) { 0xffff800081ae1014 <+268>: f9400339 ldr x25, [x25] 0xffff800081ae1018 <+272>: aa1303e0 mov x0, x19 0xffff800081ae101c <+276>: eb1b033f cmp x25, x27 0xffff800081ae1020 <+280>: 54fffa21 b.ne 0xffff800081ae0f64 // b.any 0xffff800081ae1024 <+284>: 14000011 b 0xffff800081ae1068 ./include/linux/hugetlb.h: 808 return 1 << h->order; 0xffff800081ae1028 <+288>: b9402a68 ldr w8, [x19, #40] mm/hugetlb.c: 3318 hugetlb_folio_init_tail_vmemmap(folio, 0xffff800081ae102c <+292>: aa1403e0 mov x0, x20 0xffff800081ae1030 <+296>: 52800801 mov w1, #0x40 // #64 ./include/linux/hugetlb.h: 808 return 1 << h->order; 0xffff800081ae1034 <+300>: 9ac82342 lsl x2, x26, x8 mm/hugetlb.c: 3318 hugetlb_folio_init_tail_vmemmap(folio, 0xffff800081ae1038 <+304>: 940001ae bl 0xffff800081ae16f0 0xffff800081ae103c <+308>: 17ffffee b 0xffff800081ae0ff4 0xffff800081ae1040 <+312>: d4210000 brk #0x800 0xffff800081ae1044 <+316>: 17ffffd4 b 0xffff800081ae0f94 ./arch/arm64/include/asm/atomic_ll_sc.h: 203 ATOMIC64_OPS(or, orr, L) 0xffff800081ae1048 <+320>: d503249f bti j 0xffff800081ae104c <+324>: 91010288 add x8, x20, #0x40 0xffff800081ae1050 <+328>: f9800111 prfm pstl1strm, [x8] 0xffff800081ae1054 <+332>: c85f7d09 ldxr x9, [x8] 0xffff800081ae1058 <+336>: b2780129 orr x9, x9, #0x100 0xffff800081ae105c <+340>: c80a7d09 stxr w10, x9, [x8] 0xffff800081ae1060 <+344>: 35ffffaa cbnz w10, 0xffff800081ae1054 0xffff800081ae1064 <+348>: 17ffffd2 b 0xffff800081ae0fac mm/hugetlb.c: 3332 prep_and_add_allocated_folios(h, &folio_list); 0xffff800081ae1068 <+352>: 910023e1 add x1, sp, #0x8 0xffff800081ae106c <+356>: aa1303e0 mov x0, x19 0xffff800081ae1070 <+360>: 979ecd25 bl 0xffff800080294504 0xffff800081ae1074 <+364>: d5384108 mrs x8, sp_el0 0xffff800081ae1078 <+368>: f9423d08 ldr x8, [x8, #1144] 0xffff800081ae107c <+372>: f85f83a9 ldur x9, [x29, #-8] 0xffff800081ae1080 <+376>: eb09011f cmp x8, x9 0xffff800081ae1084 <+380>: 54000141 b.ne 0xffff800081ae10ac // b.any 3333 } 0xffff800081ae1088 <+384>: a9474ff4 ldp x20, x19, [sp, #112] 0xffff800081ae108c <+388>: a94657f6 ldp x22, x21, [sp, #96] 0xffff800081ae1090 <+392>: a9455ff8 ldp x24, x23, [sp, #80] 0xffff800081ae1094 <+396>: a94467fa ldp x26, x25, [sp, #64] 0xffff800081ae1098 <+400>: a9436ffc ldp x28, x27, [sp, #48] 0xffff800081ae109c <+404>: a9427bfd ldp x29, x30, [sp, #32] 0xffff800081ae10a0 <+408>: 910203ff add sp, sp, #0x80 0xffff800081ae10a4 <+412>: d50323bf autiasp 0xffff800081ae10a8 <+416>: d65f03c0 ret 0xffff800081ae10ac <+420>: 97d6228a bl 0xffff800081069ad4 <__stack_chk_fail> End of assembler dump.