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    SubjectRe: 2.6.20-mm1
    From
    Andrew Morton napisał(a):
    > On Thu, 15 Feb 2007 15:37:20 +0100
    > Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:
    >
    >> Andrew Morton napisa__(a):
    >>> Temporarily at
    >>>
    >>> http://userweb.kernel.org/~akpm/2.6.20-mm1/
    >>>
    >>> Will appear later at
    >>>
    >>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20/2.6.20-mm1/
    >>>
    >>>
    >> BUG: sleeping function called from invalid context at /mnt/md0/devel/linux-mm/mm/slab.c:3043
    >> in_atomic():1, irqs_disabled():0
    >> 1 lock held by artsd/3819:
    >> #0: (&new->lock){--..}, at: [<c01d5b7c>] ipc_lock+0x35/0x4f
    >> [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    >> [<c0105a25>] show_trace+0x12/0x14
    >> [<c0105ae7>] dump_stack+0x16/0x18
    >> [<c011db4a>] __might_sleep+0xc9/0xcf
    >> [<c017c37a>] kmem_cache_zalloc+0x28/0xe5
    >> [<c01d8c7d>] do_shmat+0x111/0x372
    >> [<c0109151>] sys_ipc+0x148/0x1b5
    >> [<c010432c>] syscall_call+0x7/0xb
    >
    > That's shm-make-sysv-ipc-shared-memory-use-stacked-files.patch, brought to
    > us by Eric-who-hasnt-read-Documentation/SubmitChecklist.
    >
    > Like this, I guess:
    >
    > diff -puN ipc/shm.c~shm-make-sysv-ipc-shared-memory-use-stacked-files-fix ipc/shm.c

    I might be drunk...

    This patch still doesn't solve the problem.

    BUG: sleeping function called from invalid context at /mnt/md0/devel/linux-mm/mm/slab.c:3043
    in_atomic():1, irqs_disabled():0
    1 lock held by Xorg/2885:
    #0: (&new->lock){--..}, at: [<c01d5b7c>] ipc_lock+0x35/0x4f
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c0105a25>] show_trace+0x12/0x14
    [<c0105ae7>] dump_stack+0x16/0x18
    [<c011db4a>] __might_sleep+0xc9/0xcf
    [<c017c45f>] kmem_cache_alloc+0x28/0xbf
    [<c01814c3>] get_empty_filp+0x6a/0x173
    [<c01d8ca2>] do_shmat+0x136/0x390
    [<c0109151>] sys_ipc+0x148/0x1b5
    [<c010432c>] syscall_call+0x7/0xb
    =======================
    BUG: MAX_LOCK_DEPTH too low!
    turning off the locking correctness validator.
    do_IRQ: stack overflow: -52
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c0105a25>] show_trace+0x12/0x14
    [<c0105ae7>] dump_stack+0x16/0x18
    [<c0106cc0>] do_IRQ+0x95/0xc1
    BUG: unable to handle kernel paging request at virtual address 0e200034
    printing eip:
    c01052e2
    *pde = 00000000
    Oops: 0000 [#1]
    PREEMPT SMP
    last sysfs file: /devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/vendor
    Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nfsd exportfs lockd nfs_acl autofs4 sunrpc af_packet nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x_tables ipv6 binfmt_misc thermal processor fan container nvram snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss evdev snd_mixer_oss snd_pcm snd_timer skge snd 8139too intel_agp sk98lin agpgart soundcore mii i2c_i801 snd_page_alloc ide_cd cdrom rtc unix
    CPU: 0
    EIP: 0060:[<c01052e2>] Not tainted VLI
    EFLAGS: 00013046 (2.6.20-mm1 #16)
    EIP is at dump_trace+0x88/0x9e
    eax: 00000000 ebx: f412c01c ecx: c0429344 edx: c03cf8fa
    BUG: unable to handle kernel paging request at virtual address 8d17ca6c
    printing eip:
    c011d927
    *pde = 00000000
    esi: 0e200000 edi: c03daed2 ebp: f412bfd0 esp: f412bfc0
    ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
    Process Xorg (pid: 2885, ti=f412a000 task=f4a58aa0 task.ti=f412c000)
    Stack: c7422ac0 c03daed2 00000011 00000000 f412bfe4 c0105312 c0429344 c03daed2
    00000004 f412bff0 c0105a25 c03daed2 f412bffc c0105ae7 f412c008 f412c01c
    Call Trace:
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c01053c4>] show_stack_log_lvl+0x9d/0xac
    [<c01055c0>] show_registers+0x1ed/0x34c
    [<c010583c>] die+0x11d/0x234
    [<c011b8d1>] do_page_fault+0x47c/0x55b
    [<c033aaac>] error_code+0x7c/0x84
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c0105a25>] show_trace+0x12/0x14
    [<c0105ae7>] dump_stack+0x16/0x18
    [<c0106cc0>] do_IRQ+0x95/0xc1
    BUG: unable to handle kernel paging request at virtual address 0e200034
    printing eip:
    c01052e2
    *pde = 00000000
    Oops: 0000 [#2]
    PREEMPT SMP
    last sysfs file: /devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/vendor
    Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nfsd exportfs lockd nfs_acl autofs4 sunrpc af_packet nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x_tables ipv6 binfmt_misc thermal processor fan container nvram snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss evdev snd_mixer_oss snd_pcm snd_timer skge snd 8139too intel_agp sk98lin agpgart soundcore mii i2c_i801 snd_page_alloc ide_cd cdrom rtc unix
    CPU: 0
    EIP: 0060:[<c01052e2>] Not tainted VLI
    EFLAGS: 00013046 (2.6.20-mm1 #16)
    EIP is at dump_trace+0x88/0x9e
    eax: 00000000 ebx: f412c01c ecx: c0429344 edx: c03cf8fa
    esi: 0e200000 edi: c03cfa80 ebp: f412be5c esp: f412be4c
    ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
    Process Xorg (pid: 2885, ti=f412a000 task=f4a58aa0 task.ti=f412c000)
    Stack: f412be64 c03cfa80 00000010 00000000 f412be70 c0105312 c0429344 c03cfa80
    f412c003 f412be94 c01053c4 c03cfa80 c03cfa80 f412bf88 f412bfc0 f4a58c3c
    0000002b 00000040 f412bef8 c01055c0 c03cfa80 00000010 f4a58c3c 00000b45
    Call Trace:
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c01053c4>] show_stack_log_lvl+0x9d/0xac
    [<c01055c0>] show_registers+0x1ed/0x34c
    [<c010583c>] die+0x11d/0x234
    [<c011b8d1>] do_page_fault+0x47c/0x55b
    [<c033aaac>] error_code+0x7c/0x84
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c01053c4>] show_stack_log_lvl+0x9d/0xac
    [<c01055c0>] show_registers+0x1ed/0x34c
    [<c010583c>] die+0x11d/0x234
    [<c011b8d1>] do_page_fault+0x47c/0x55b
    [<c033aaac>] error_code+0x7c/0x84
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c0105a25>] show_trace+0x12/0x14
    [<c0105ae7>] dump_stack+0x16/0x18
    [<c0106cc0>] do_IRQ+0x95/0xc1
    BUG: unable to handle kernel paging request at virtual address 0e200034
    printing eip:
    c01052e2
    *pde = 00000000
    Recursive die() failure, output suppressed
    Oops: 0000 [#3]
    Kernel panic - not syncing: Fatal exception in interrupt
    PREEMPT SMP
    last sysfs file: /devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/vendor
    Modules linked in: ipt_MASQUERADE iptable_nat nf_nat nfsd exportfs lockd nfs_acl autofs4 sunrpc af_packet nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink xt_tcpudp iptable_filter ip_tables x_tables ipv6 binfmt_misc thermal processor fan container nvram snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss evdev snd_mixer_oss snd_pcm snd_timer skge snd 8139too intel_agp sk98lin agpgart soundcore mii i2c_i801 snd_page_alloc ide_cd cdrom rtc unix
    CPU: 1
    EIP: 0060:[<c011d927>] Not tainted VLI
    EFLAGS: 00010087 (2.6.20-mm1 #16)
    EIP is at resched_task+0x19/0x7f
    eax: 8d17ca6c ebx: f4a58aa0 ecx: f59ceae0 edx: 00003246
    esi: f59ceae0 edi: 00000000 ebp: f5fedde8 esp: f5fedde0
    ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
    Process automount (pid: 2423, ti=f5fec000 task=f7e79550 task.ti=f5fec000)
    Stack: c7429b20 f59ceae0 f5fede3c c011f23d 00000080 00000000 00000003 f59ceae0
    00000000 00000001 00000001 c7421b20 00000080 00000000 00000069 06f71d80
    2a57c378 00000020 00000003 00000086 f5ae1f40 f5ae1f18 00000000 f5fede44
    Call Trace:
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c01053c4>] show_stack_log_lvl+0x9d/0xac
    [<c01055c0>] show_registers+0x1ed/0x34c
    [<c010583c>] die+0x11d/0x234
    [<c011b8d1>] do_page_fault+0x47c/0x55b
    [<c033aaac>] error_code+0x7c/0x84
    [<c011f23d>] try_to_wake_up+0x3eb/0x418
    [<c011f275>] default_wake_function+0xb/0xd
    [<c011c5d0>] __wake_up_common+0x32/0x55
    [<c011d3d9>] __wake_up+0x31/0x42
    [<c0142243>] wake_futex+0x45/0x50
    [<c0143dc0>] do_futex+0x88d/0xe93
    [<c0144456>] sys_futex+0x90/0xa3
    [<c010432c>] syscall_call+0x7/0xb
    =======================
    Code: 01 7b 08 11 4b 0c eb 05 01 3b 11 4b 04 5b 5e 5f 5d c3 55 89 e5 56 53 89 c3 b8 a0 fd 4a c0 8b 53 04 8b 52 10 03 04 95 00 66 47 c0 <8a> 00 31 d2 84 c0 0f 9f c2 b8 e0 cd 42 c0 e8 d2 39 0f 00 85 c0
    EIP: [<c011d927>] resched_task+0x19/0x7f SS:ESP 0068:f5fedde0
    BUG: at /mnt/md0/devel/linux-mm/drivers/char/vt.c:3392 do_unblank_screen()
    [<c0105312>] show_trace_log_lvl+0x1a/0x2f
    [<c0105a25>] show_trace+0x12/0x14
    [<c0105ae7>] dump_stack+0x16/0x18
    [<c025eb1d>] do_unblank_screen+0x73/0x138
    [<c025ebec>] unblank_screen+0xa/0xc
    [<c0203cac>] bust_spinlocks+0x18/0x2c
    [<c0105893>] die+0x174/0x234
    [<c011b8d1>] do_page_fault+0x47c/0x55b
    [<c033aaac>] error_code+0x7c/0x84
    [<c011f23d>] try_to_wake_up+0x3eb/0x418
    [<c011f275>] default_wake_function+0xb/0xd
    [<c011c5d0>] __wake_up_common+0x32/0x55
    [<c011d3d9>] __wake_up+0x31/0x42
    [<c0142243>] wake_futex+0x45/0x50
    [<c0143dc0>] do_futex+0x88d/0xe93
    [<c0144456>] sys_futex+0x90/0xa3
    [<c010432c>] syscall_call+0x7/0xb
    =======================
    note: automount[2423] exited with preempt_count 4

    0xc01052e2 is in dump_trace (/mnt/md0/devel/linux-mm/arch/i386/kernel/traps.c:191).
    186 /* Should be after the line below, but somewhere
    187 in early boot context comes out corrupted and we
    188 can't reference it -AK */
    189 if (ops->stack(data, "IRQ") < 0)
    190 break;
    191 stack = (unsigned long*)context->previous_esp;
    192 if (!stack)
    193 break;
    194 touch_nmi_watchdog();
    195 }

    0xc011d927 is in resched_task (include2/asm/spinlock.h:33).
    28 * (the type definitions are in asm/spinlock_types.h)
    29 */
    30
    31 static inline int __raw_spin_is_locked(raw_spinlock_t *x)
    32 {
    33 return *(volatile signed char *)(&(x)->slock) <= 0;
    34 }
    35
    36 static inline void __raw_spin_lock(raw_spinlock_t *lock)
    37 {

    Regards,
    Michal

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