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    SubjectRe: 2.6.18-rc4-mm1
    john stultz wrote:
    > On Mon, 2006-08-14 at 21:27 +0200, Michal Piotrowski wrote:
    >> On 14/08/06, john stultz <johnstul@us.ibm.com> wrote:
    >>> On Mon, 2006-08-14 at 21:01 +0200, Michal Piotrowski wrote:
    >>>> Andrew Morton wrote:
    >>>>> On Mon, 14 Aug 2006 16:02:52 +0200
    >>>>> "Michal Piotrowski" <michal.k.k.piotrowski@gmail.com> wrote:
    >>>>>> On 13/08/06, Andrew Morton <akpm@osdl.org> wrote:
    >>>>>>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm1/
    >>>>>>>
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: BUG: unable to handle kernel
    >>>>>> paging request at virtual address fffeffbf
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: printing eip:
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: c013d539
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: *pde = 00004067
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: *pte = 00000000
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: Oops: 0000 [#1]
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: 4K_STACKS PREEMPT SMP
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: last sysfs file:
    >>>>>> /devices/platform/i2c-9191/9191-0290/temp2_input
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: Modules linked in: ipv6 w83627hf
    >>>>>> hwmon_vid hwmon i2c_isa af_packet ip_conntrack_netbios
    >>>>>> _ns ipt_REJECT xt_state ip_conntrack nfnetlink xt_tcpudp
    >>>>>> iptable_filter ip_tables x_tables cpufreq_userspace p4_clockmod spe
    >>>>>> edstep_lib binfmt_misc thermal processor fan container evdev
    >>>>>> snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_seq_dummy snd_seq_
    >>>>>> oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss
    >>>>>> snd_mixer_oss snd_pcm sk98lin snd_timer skge snd soundcore snd_pag
    >>>>>> e_alloc ide_cd intel_agp agpgart cdrom i2c_i801 rtc unix
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: CPU: 1
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: EIP: 0060:[<c013d539>] Not
    >>>>>> tainted VLI
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: EFLAGS: 00210286 (2.6.18-rc4-mm1 #97)
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: EIP is at futex_wake+0x9c/0xcb
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: eax: 0808c000 ebx: c0670a60
    >>>>>> ecx: d3a1dfa2 edx: fffeffbf
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: esi: 00000000 edi: fffeffbf
    >>>>>> ebp: f4896f64 esp: f4896f40
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: ds: 007b es: 007b ss: 0068
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: Process firefox-bin (pid: 2210,
    >>>>>> ti=f4896000 task=f3d180f0 task.ti=f4896000)
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: Stack: c0670a80 00000001 0808c000
    >>>>>> f4302e74 00000044 ffffffe7 0808c044 bf8f35b0
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: 00000000 f4896f7c c013ed39
    >>>>>> 00000001 0808c044 7fffffff bf8f35b0 f4896fb4
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: c013ee84 7fffffff bf8f35b0
    >>>>>> 00000000 bf8f3528 00000000 f4896fa8 00000000
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: Call Trace:
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: [<c013ed39>] do_futex+0x3c/0x92
    >>>>>> Aug 14 15:35:10 ltg01-fedora kernel: [<c013ee84>] sys_futex+0xf5/0x101
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c010312d>] sysenter_past_esp+0x56/0x8d
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<b7f1d410>] 0xb7f1d410
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c0103fc1>] show_trace_log_lvl+0x12/0x22
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c0104067>] show_stack_log_lvl+0x87/0x8f
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c0104203>] show_registers+0x151/0x1d8
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c010444d>] die+0x120/0x1f0
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c01185cf>] do_page_fault+0x49d/0x580
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c0303ba9>] error_code+0x39/0x40
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c013ed39>] do_futex+0x3c/0x92
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c013ee84>] sys_futex+0xf5/0x101
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: [<c010312d>] sysenter_past_esp+0x56/0x8d
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: =======================
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: Code: 45 e8 39 41 04 75 22 8b 45
    >>>>>> ec 39 41 08 75 1a 83 7a 48 00 74 07 be ea ff ff ff eb
    >>>>>> 16 89 d0 46 e8 00 fd ff ff 3b 75 e0 7d 09 89 fa <8b> 3f 3b 55 dc eb c0
    >>>>>> 89 d8 e8 bd 60 1c 00 89 e0 25 00 f0 ff ff
    >>>>>> Aug 14 15:35:11 ltg01-fedora kernel: EIP: [<c013d539>]
    >>>>>> futex_wake+0x9c/0xcb SS:ESP 0068:f4896f40
    >>>>> This is worrisome. Is it reproducible?
    >>>> I don't know how to reproduce it, but it happened second time today.
    >>>>
    >>>>> If so, reverting
    >>>>> futex_handle_fault-always-fails.patch and retesting would be useful.
    >>>> I reverted this patch.
    >>> Just to be clear, the issue has shown itself without the patch?
    >> No, it hasn't.
    >
    > Thanks for the clarification.
    >
    >>> Or is
    >>> that not the case?
    >> In current -mm only futex_handle_fault-always-fails.patch changes
    >> kernel/futex.c, so IMHO it's very probable that there is something
    >> wrong with this patch.
    >
    > Yea, I'd believe that. I'm newish to the futex code, and as I said w/
    > the patch I'm not 100% sure its the right fix, but it does resolve an
    > issue we found.
    >
    > I'll take another look to see if I futzed something up or if the fix is
    > just incomplete, although some more familiar eyes with the code would
    > probably help here.
    >

    Hmmm... It looks a bit different without futex_handle_fault-always-fails.patch

    Aug 14 22:30:09 ltg01-fedora kernel: general protection fault: 0000 [#1]
    Aug 14 22:30:09 ltg01-fedora kernel: 4K_STACKS PREEMPT SMP
    Aug 14 22:30:09 ltg01-fedora kernel: last sysfs file: /devices/platform/i2c-9191/9191-0290/temp2_input
    Aug 14 22:30:09 ltg01-fedora kernel: Modules linked in: ipv6 w83627hf hwmon_vid hwmon i2c_isa af_packet ip_conntrack_netbios
    _ns ipt_REJECT xt_state ip_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x_tables cpufreq_userspace p4_clockmod spe
    edstep_lib binfmt_misc thermal processor fan container evdev snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_seq_dummy snd_seq_
    oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm sk98lin skge snd_timer snd soundcore snd_pag
    e_alloc ide_cd i2c_i801 intel_agp agpgart cdrom rtc unix
    Aug 14 22:30:09 ltg01-fedora kernel: CPU: 0
    Aug 14 22:30:09 ltg01-fedora kernel: EIP: 0060:[<c0205249>] Not tainted VLI
    Aug 14 22:30:09 ltg01-fedora kernel: EFLAGS: 00010246 (2.6.18-rc4-mm1 #101)
    Aug 14 22:30:09 ltg01-fedora kernel: EIP is at __list_add+0x3d/0x7a
    Aug 14 22:30:09 ltg01-fedora kernel: eax: 00000000 ebx: c0670a80 ecx: c038d4dc edx: 00000000
    Aug 14 22:30:09 ltg01-fedora kernel: esi: ffffffff edi: f50ebee8 ebp: f50ebed0 esp: f50ebec4
    Aug 14 22:30:09 ltg01-fedora kernel: ds: 007b es: 007b ss: 0068
    Aug 14 22:30:09 ltg01-fedora kernel: Process thunderbird-bin (pid: 2288, ti=f50eb000 task=c75b9260 task.ti=f50eb000)
    Aug 14 22:30:09 ltg01-fedora kernel: Stack: f50ebee8 080e7dc0 c0670a60 f50ebf64 c013de71 00000001 c75b9260 0000ea6b
    Aug 14 22:30:10 ltg01-fedora kernel: 00000001 f50ebf20 c013adf0 00000001 00000000 dead4ead ffffffff ffffffff
    Aug 14 22:30:10 ltg01-fedora kernel: c75b9260 00000000 00000000 f50ebf10 f50ebf10 c0670a60 080e7000 f3e65c94
    Aug 14 22:30:10 ltg01-fedora kernel: Call Trace:
    Aug 14 22:30:10 ltg01-fedora kernel: [<c013de71>] futex_wait+0x15c/0x220
    Aug 14 22:30:10 ltg01-fedora kernel: [<c013ed17>] do_futex+0x33/0x92
    Aug 14 22:30:10 ltg01-fedora kernel: [<c013ee6b>] sys_futex+0xf5/0x101
    Aug 14 22:30:10 ltg01-fedora kernel: [<c010312d>] sysenter_past_esp+0x56/0x8d
    Aug 14 22:30:10 ltg01-fedora kernel: [<b7f12410>] 0xb7f12410
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0103fc1>] show_trace_log_lvl+0x12/0x22
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0104067>] show_stack_log_lvl+0x87/0x8f
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0104203>] show_registers+0x151/0x1d8
    Aug 14 22:30:10 ltg01-fedora kernel: [<c010444d>] die+0x120/0x1f0
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0104c9f>] do_general_protection+0x1d1/0x1d9
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0303b89>] error_code+0x39/0x40
    Aug 14 22:30:10 ltg01-fedora kernel: [<c013de71>] futex_wait+0x15c/0x220
    Aug 14 22:30:10 ltg01-fedora kernel: [<c013ed17>] do_futex+0x33/0x92
    Aug 14 22:30:10 ltg01-fedora kernel: [<c013ee6b>] sys_futex+0xf5/0x101
    Aug 14 22:30:10 ltg01-fedora kernel: [<c010312d>] sysenter_past_esp+0x56/0x8d
    Aug 14 22:30:10 ltg01-fedora kernel: =======================
    Aug 14 22:30:10 ltg01-fedora kernel: Code: cb 39 71 04 0f 95 c2 e8 12 0f 00 00 85 c0 74 19 ff 73 04 56 68 a1 89 33 c0 e8 97
    ce f1 ff 0f 0b 1a 00 7e 89 33 c0 83 c4 0c 31 d2 <39> 1e b8 f8 d4 38 c0 0f 95 c2 e8 e4 0e 00 00 85 c0 74 18 ff 36
    Aug 14 22:30:10 ltg01-fedora kernel: EIP: [<c0205249>] __list_add+0x3d/0x7a SS:ESP 0068:f50ebec4
    Aug 14 22:30:10 ltg01-fedora kernel: <6>note: thunderbird-bin[2288] exited with preempt_count 1
    Aug 14 22:30:10 ltg01-fedora kernel: BUG: sleeping function called from invalid context at /usr/src/linux-mm/mm/slab.c:2989
    Aug 14 22:30:10 ltg01-fedora kernel: in_atomic():1, irqs_disabled():0
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0103e41>] dump_trace+0x70/0x176
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0103fc1>] show_trace_log_lvl+0x12/0x22
    Aug 14 22:30:10 ltg01-fedora kernel: [<c0103fde>] show_trace+0xd/0xf
    Aug 14 22:30:10 ltg01-fedora kernel: [<c01040b0>] dump_stack+0x17/0x19
    Aug 14 22:30:10 ltg01-fedora kernel: [<c011ec0c>] __might_sleep+0x92/0x9a
    Aug 14 22:30:10 ltg01-fedora kernel: [<c017319e>] kmem_cache_zalloc+0x27/0xe7
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0154b57>] taskstats_exit_alloc+0x30/0x6e
    Aug 14 22:30:11 ltg01-fedora kernel: [<c012455e>] do_exit+0x1a3/0x5cd
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0104515>] die+0x1e8/0x1f0
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0104c9f>] do_general_protection+0x1d1/0x1d9
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0303b89>] error_code+0x39/0x40
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0205249>] __list_add+0x3d/0x7a
    Aug 14 22:30:11 ltg01-fedora kernel: [<c013de71>] futex_wait+0x15c/0x220
    Aug 14 22:30:11 ltg01-fedora kernel: [<c013ed17>] do_futex+0x33/0x92
    Aug 14 22:30:11 ltg01-fedora kernel: [<c013ee6b>] sys_futex+0xf5/0x101
    Aug 14 22:30:11 ltg01-fedora kernel: [<c010312d>] sysenter_past_esp+0x56/0x8d
    Aug 14 22:30:11 ltg01-fedora kernel: [<b7f12410>] 0xb7f12410
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0103fc1>] show_trace_log_lvl+0x12/0x22
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0103fde>] show_trace+0xd/0xf
    Aug 14 22:30:11 ltg01-fedora kernel: [<c01040b0>] dump_stack+0x17/0x19
    Aug 14 22:30:11 ltg01-fedora kernel: [<c011ec0c>] __might_sleep+0x92/0x9a
    Aug 14 22:30:11 ltg01-fedora kernel: [<c017319e>] kmem_cache_zalloc+0x27/0xe7
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0154b57>] taskstats_exit_alloc+0x30/0x6e
    Aug 14 22:30:11 ltg01-fedora kernel: [<c012455e>] do_exit+0x1a3/0x5cd
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0104515>] die+0x1e8/0x1f0
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0104c9f>] do_general_protection+0x1d1/0x1d9
    Aug 14 22:30:11 ltg01-fedora kernel: [<c0303b89>] error_code+0x39/0x40
    Aug 14 22:30:11 ltg01-fedora kernel: [<c013de71>] futex_wait+0x15c/0x220
    Aug 14 22:30:11 ltg01-fedora kernel: [<c013ed17>] do_futex+0x33/0x92
    Aug 14 22:30:11 ltg01-fedora kernel: [<c013ee6b>] sys_futex+0xf5/0x101
    Aug 14 22:30:11 ltg01-fedora kernel: [<c010312d>] sysenter_past_esp+0x56/0x8d
    Aug 14 22:30:11 ltg01-fedora kernel: =======================

    0xc0205249 is in __list_add (/usr/src/linux-mm/lib/list_debug.c:28).
    23 if (unlikely(next->prev != prev)) {
    24 printk("list_add corruption. next->prev should be %p, but was %p\n",
    25 prev, next->prev);
    26 BUG();
    27 }
    28 if (unlikely(prev->next != next)) {
    29 printk("list_add corruption. prev->next should be %p, but was %p\n",
    30 next, prev->next);
    31 BUG();
    32 }

    I'll revert debug-variants-of-linked-list-macros.patch

    > thanks
    > -john
    >
    >

    Regards,
    Michal

    --
    Michal K. K. Piotrowski
    LTG - Linux Testers Group
    (http://www.stardust.webpages.pl/ltg/wiki/)
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