Eric Lee / smarc-fsl-linux-kernel

03 May, 2007

2 commits

  • 39b7ee068   [PATCH] x86-64: deflate inflate_dynamic too ... Browse Code »

    inflate_dynamic() has piggy stack usage too, so heap allocate it too.
    I'm not sure it actually gets used, but it shows up large in "make
    checkstack".

    Signed-off-by: Jeremy Fitzhardinge
    Signed-off-by: Andi Kleen

    Jeremy Fitzhardinge
     
  • 35c742264   [PATCH] x86: deflate stack usage in lib/inflate.c ... Browse Code »

    inflate_fixed and huft_build together use around 2.7k of stack. When
    using 4k stacks, I saw stack overflows from interrupts arriving while
    unpacking the root initrd:

    do_IRQ: stack overflow: 384
    [] show_trace_log_lvl+0x1a/0x30
    [] show_trace+0x12/0x14
    [] dump_stack+0x16/0x18
    [] do_IRQ+0x6d/0xd9
    [] xen_evtchn_do_upcall+0x6e/0xa2
    [] xen_hypervisor_callback+0x25/0x2c
    [] xen_restore_fl+0x27/0x29
    [] _spin_unlock_irqrestore+0x4a/0x50
    [] change_page_attr+0x577/0x584
    [] kernel_map_pages+0x8d/0xb4
    [] cache_alloc_refill+0x53f/0x632
    [] __kmalloc+0xc1/0x10d
    [] malloc+0x10/0x12
    [] huft_build+0x2a7/0x5fa
    [] inflate_fixed+0x91/0x136
    [] unpack_to_rootfs+0x5f2/0x8c1
    [] populate_rootfs+0x1e/0xe4

    (This was under Xen, but there's no reason it couldn't happen on bare
    hardware.)

    This patch mallocs the local variables, thereby reducing the stack
    usage to sane levels.

    Also, up the heap size for the kernel decompressor to deal with the
    extra allocation.

    Signed-off-by: Jeremy Fitzhardinge
    Signed-off-by: Andi Kleen
    Cc: Tim Yamin
    Cc: Andi Kleen
    Cc: Matt Mackall
    Cc: Ivan Kokshaysky
    Cc: Richard Henderson
    Cc: Russell King
    Cc: Ian Molton

    Jeremy Fitzhardinge
     

06 Aug, 2005

1 commit

  • 4aad724d3   [PATCH] Update in-kernel zlib routines ... Browse Code »

    These bugs have been fixed in the standard zlib for a while.

    See for example

    a) http://sources.redhat.com/ml/bug-gnu-utils/1999-06/msg00183.html
    b) http://bugs.gentoo.org/show_bug.cgi?id=94584

    Signed-off-by: Tim Yamin
    Signed-off-by: Tavis Ormandy
    Signed-off-by: Linus Torvalds

    Tim Yamin
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds