Re: 2.6.7-mm7

From: Joseph Fannin (jhf_at_rivenstone.net)
Date: 07/09/04

  • Next message: Eric W. Biederman: "Re: [PATCH] Use NULL instead of integer 0 in security/selinux/" 
    Date:	Fri, 9 Jul 2004 16:38:52 -0400
To: Andrew Morton <akpm@osdl.org>

    On Thu, Jul 08, 2004 at 11:50:25PM -0700, Andrew Morton wrote:
    >
    > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.7/2.6.7-mm7/

    > +detect-too-early-schedule-attempts.patch
    >
    > Catch attempts to call the scheduler before it is ready to go.

        With this patch, my Powermac (ppc32) spews 711 (I think)
    warning messages during bootup. The first one looks like:

    Calibrating delay loop... 1064.96 BogoMIPS
    Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
    Badness in schedule at kernel/sched.c:2153
    Call trace:
     [c00099e4] dump_stack+0x18/0x28
     [c0006bac] check_bug_trap+0x84/0xac
     [c0006d38] ProgramCheckException+0x164/0x1a4
     [c0006240] ret_from_except_full+0x0/0x4c
     [c02021bc] schedule+0x24/0x684
     [c0005e80] syscall_exit_work+0x108/0x10c
     [c02e0ad0] proc_root_init+0x14c/0x158
     [00000000] 0x0
     [c02ce5a0] start_kernel+0x158/0x184
     [000035fc] 0x35fc

    and this goes on until:

    Badness in schedule at kernel/sched.c:2153
    Call trace:
     [c00099e4] dump_stack+0x18/0x28
     [c0006bac] check_bug_trap+0x84/0xac
     [c0006d38] ProgramCheckException+0x164/0x1a4
     [c0006240] ret_from_except_full+0x0/0x4c
     [c02021bc] schedule+0x24/0x684
     [c00062ec] resume_kernel+0x38/0x58
     [c020249c] schedule+0x304/0x684
     [c002c85c] worker_thread+0x258/0x27c
     [c00317d0] kthread+0xb8/0xc0
     [c0009128] kernel_thread+0x44/0x60
    adb devices: [2]: 2 2 [3]: 3 1
    ADB keyboard at 2, handler set to 3

        The full dmesg is 322K, and is up at:
    http://www.rivenstone.net/linux/samarkand.dmesg

        Most of the traces look something like the bottom one. 

    -- 
Joseph Fannin
jhf@rivenstone.net

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