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  • 源码堆栈信息保存 到此一游

    kernel_thread

    到此一游
    内存初始化

    #0 page_address_init () at mm/highmem.c:419
    #1 0xc0bcd4d1 in start_kernel () at init/main.c:497
    #2 0xc0bcd0a9 in i386_start_kernel () at arch/x86/kernel/head32.c:68
    #3 0x00000000 in ?? ()

    (gdb) pt page_address_maps
    type = struct page_address_map {
    struct page *page;
    void *virtual;
    struct list_head list;
    } [1024]
    (gdb) pt *(page_address_maps.page)
    Type struct page_address_map [1024] is not a structure or union type.
    (gdb) p page_address_maps->page
    $2 = (struct page *) 0x0
    (gdb) p *(page_address_maps->page)
    $3 = {flags = 4026597203, mapping = 0xf000ff53, {{index = 4026589891, freelist = 0xf000e2c3}, {counters = 4026597203, {{_mapcount = {counter = -268370093}, {inuse = 65363,
    objects = 28672, frozen = 1}}, _count = {counter = -268370093}}}}, {lru = {next = 0xf000ff53, prev = 0xf000ff53}, {next = 0xf000ff53, pages = -173,
    pobjects = -4096}}, {private = 4026597203, ptl = {{rlock = {raw_lock = {{head_tail = 65363, tickets = {head = 83 'S', tail = 255 '377'}}}}}}, slab = 0xf000ff53,
    first_page = 0xf000ff53}}
    (gdb) p (*(page_address_maps->page)).slab
    $4 = (struct kmem_cache *) 0xf000ff53
    (gdb) p *((*(page_address_maps->page)).slab)

    end
    arch/x86/mm/init_32.c, line 372

     
    start
    #0 profile_init () at kernel/profile.c:106
    #1 0xc0bcd64d in start_kernel () at init/main.c:558
    #2 0xc0bcd0a9 in i386_start_kernel () at arch/x86/kernel/head32.c:68
    #3 0x00000000 in ?? ()

    (gdb) bt
    #0 init () at drivers/char/virtio_console.c:1847
    #1 0xc0401125 in do_one_initcall (fn=0xc0bfdd9c <init>) at init/main.c:688
    #2 0xc0bcd841 in do_initcalls () at init/main.c:718
    #3 do_basic_setup () at init/main.c:737
    #4 kernel_init (unused=<optimized out>) at init/main.c:820
    #5 0xc0947c3e in kernel_thread_helper () at arch/x86/kernel/entry_32.S:1010
    #6 0x00000000 in ?? ()

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  • 原文地址:https://www.cnblogs.com/heling/p/3387943.html
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