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    SubjectRe: PROBLEM: "BUG:" when resuming from suspend-to-ram
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    Date
    On Thu, 2007-03-01 at 00:36 -0500, Dmitry Torokhov wrote:
    > On Wednesday 28 February 2007 07:45, Rafael J. Wysocki wrote:
    > >
    > > > This gives:
    > > >
    > > > (gdb) l *evdev_disconnect+0xb1
    > > > 0xa81 is in evdev_disconnect (include/asm/processor.h:716).
    > > > 711 However we don't do prefetches for pre XP Athlons currently
    > > > 712 That should be fixed. */
    > > > 713 #define ARCH_HAS_PREFETCH
    > > > 714 static inline void prefetch(const void *x)
    > > > 715 {
    > > > 716 alternative_input(ASM_NOP4,
    > > > 717 "prefetchnta (%1)",
    > > > 718 X86_FEATURE_XMM,
    > > > 719 "r" (x));
    > > > 720 }
    > >
    > > Hm, interesting. Looks like a pointer points to nowhere in
    > > input_unregister_device(), but I don't know which one. This may be
    > > an evdev problem ...
    > >
    >
    > Please try the patch below.

    Hmmm.

    Now i get this BUG:

    BUG: unable to handle kernel paging request at virtual address 6b6b6b6b
    printing eip:
    f884aa91
    *pde = 00000000
    Oops: 0000 [#1]
    PREEMPT
    Modules linked in: tg3 i915 drm binfmt_misc rfcomm l2cap ipv6 fuse
    capability commoncap cpufreq_performance aoe af_packet nls_utf8 ntfs
    nls_iso8859_1 nls_cp437 vfat fat dm_snapshot dm_mirror dm_mod
    ieee80211_crypt_tkip ieee80211_crypt pd6729 snd_seq_dummy snd_seq_oss
    snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_seq_device
    sermouse hci_vhci hci_uart wbsd mmc_block mmc_core tun msr cpuid
    cpufreq_stats container video backlight fan button speedstep_lib thermal
    battery ac speedstep_centrino processor sr_mod sbp2 scsi_mod ide_cd
    cdrom eth1394 hci_usb snd_intel8x0 pcmcia firmware_class snd_intel8x0m
    bluetooth snd_ac97_codec snd_pcm_oss snd_mixer_oss ac97_bus irda snd_pcm
    snd_timer i2c_i801 pcspkr crc_ccitt ohci1394 ieee1394 rtc yenta_socket
    rsrc_nonstatic pcmcia_core serio_raw i2c_core snd soundcore
    snd_page_alloc iTCO_wdt ehci_hcd uhci_hcd usbcore intel_agp agpgart
    evdev mousedev
    CPU: 0
    EIP: 0060:[<f884aa91>] Not tainted VLI
    EFLAGS: 00010202 (2.6.21-rc2-x300 #2)
    EIP is at evdev_disconnect+0xc1/0xe0 [evdev]
    eax: 00000000 ebx: 6b6b675b ecx: 10000000 edx: 00000000
    esi: f6db01a8 edi: f6db021c ebp: e0e5dea4 esp: e0e5de94
    ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
    Process modprobe (pid: 5968, ti=e0e5c000 task=c1a5cac0 task.ti=e0e5c000)
    Stack: 00000000 f884c728 f6db01d8 f713832c e0e5dec4 c02aa9ff 00000000
    f7138a58
    f7138a58 f6d6d808 c1a1202c c1a12238 e0e5ded4 f8e9e0c5 c1a1202c
    f8e9fde0
    e0e5dee8 c025f6d4 c1a12238 f8e9feb0 f8e9feb0 e0e5def8 c028d84a
    c1a12238
    Call Trace:
    [<c010520a>] show_trace_log_lvl+0x1a/0x30
    [<c01052c9>] show_stack_log_lvl+0xa9/0xd0
    [<c010550c>] show_registers+0x21c/0x3a0
    [<c0105794>] die+0x104/0x240
    [<c0115bb5>] do_page_fault+0x2b5/0x5c0
    [<c03384ac>] error_code+0x74/0x7c
    [<c02aa9ff>] input_unregister_device+0xaf/0x140
    [<f8e9e0c5>] acpi_button_remove+0x2b/0x3f [button]
    [<c025f6d4>] acpi_device_remove+0x40/0x62
    [<c028d84a>] __device_release_driver+0x6a/0xa0
    [<c028df65>] driver_detach+0xf5/0x100
    [<c028cc67>] bus_remove_driver+0x97/0xc0
    [<c028df9b>] driver_unregister+0xb/0x20
    [<c0260aa2>] acpi_bus_unregister_driver+0xd/0xf
    [<f8e9e7d9>] acpi_button_exit+0xd/0x6a [button]
    [<c013feb2>] sys_delete_module+0x142/0x1b0
    [<c0104240>] syscall_call+0x7/0xb
    =======================
    Code: f8 74 a4 8d b4 26 00 00 00 00 8d 83 08 04 00 00 b9 06 00 02 00 ba
    1d 00 00 00 e8 8b 24 93 c7 8b 9b 10 04 00 00 81 eb 10 04 00 00 <8b> 83
    10 04 00 00 0f 18 00 9
    EIP: [<f884aa91>] evdev_disconnect+0xc1/0xe0 [evdev] SS:ESP
    0068:e0e5de94

    gdb points me in the same direction as before:

    (gdb) l *evdev_disconnect+0xc1
    0xa91 is in evdev_disconnect (include/asm/processor.h:716).
    711 However we don't do prefetches for pre XP Athlons currently
    712 That should be fixed. */
    713 #define ARCH_HAS_PREFETCH
    714 static inline void prefetch(const void *x)
    715 {
    716 alternative_input(ASM_NOP4,
    717 "prefetchnta (%1)",
    718 X86_FEATURE_XMM,
    719 "r" (x));
    720 }

    /Kristian
    -
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