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    SubjectRe: [linux-pm] swsusp regression [Was: 2.6.17-mm1]
    On Thu, Jun 22, 2006 at 09:25:06AM -0700, Andrew Morton wrote:
    > On Thu, 22 Jun 2006 18:04:03 +0200
    > Frederik Deweerdt <deweerdt@free.fr> wrote:
    >
    > > Thu, Jun 22, 2006 at 12:46:48AM -0700, Andrew Morton wrote:
    > > > I can bisect it if we're stuck, but that'll require beer or something.
    > >
    > > FWIW, my laptop (Dell D610) gave the following results:
    > > 2.6.17-mm1: suspend_device(): usb_generic_suspend+0x0/0x135 [usbcore]() returns -16
    > > 2.6.17+origin.patch: suspend_device(): usb_generic_suspend+0x0/0x135 [usbcore]() returns -16
    >
    > So it's in mainline already - hence it's some recently-written thing which
    > was not tested in rc6-mm2.
    >
    > > 2.6.17: oops
    > > 2.6.17.1: oops
    >
    > 2.6.17 wasn't supposed to oops. Do you have details on this?
    >
    For some reason, unknown to me, the oops won't display on the serial link :(.

    Here's what I could hand copy (I've suppressed printk timing information):
    x1b9/0x1be
    <c0166e6b> sys_write+0x4b/0x75 <c010300f> sysenter_past_esp+0x54/0x75
    Code: 05 c4 52 43 c0 31 53 43 c0 c3 8b 2d 68 6e 54 c0 8b 1d 60
    6e 54 c0 8b 35 6c 6e 54 c0 8b 3d 70 6e 54 c0 ff 35 74 6e 54 c0 9d c3 90 <e8>
    9d 2c ea ff e8 a2 ff ff ff 6a 03 e8 4c ab de ff 83 c4 04 c3
    EIP: [<c043531c>] do_suspend_lowlevel+0x0/0x15 SS:ESP 0068:f7a0fea4
    <3>BUG: sleeping function called from invalid context at include/linux/rwsem.h:43
    in_atomic():0, irqs_disabled():1
    <c0103e56> show_trace+0x20/0x22 <c0103f5b> dump_stack+0x1e/0x20
    <c011aec7> __might_sleep+0x9e/0xa6 <c012b0cf> blocking_notifier_call_chain+0x1e/0x5b
    <c011f091> profile_task_exit+0x21/0x23 <c0120946> do_exit+0x1d/0x483
    <c0104432> do_divide_error+0x0/0xbf <c0362c76> do_page_fault+0x3c4/0x752
    <c0103b2f> error_code+0x4f/0x54 <c013b33a> suspend_enter+0x2f/0x52
    <c013b3e0> enter_state+0x4b/0x8d <c013b579> state_store+0xa0/0xa2
    <c01a54f1> subsys_attr_store+0x37/0x41 <c01a5772> flush_write_buffer+0x3c/046
    <c01a57e3> sysfs_write_file+0x67/0x8b <c0166da6> vfs_write+0x1b9/0x1be
    <c0166e6b> sys_write+0x4b/0x75 <c010300f> sysenter_past_esp+0x54/0x75

    This is triggered on a 2.6.17.1 kernel by:
    echo mem > /sys/power/state

    .config and dmesg are here:
    http://fdeweerdt.free.fr/suspend_oops/

    Regards,
    Frederik
    -
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