2.6.1 Unable to handle kernel paging request

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I was only listening the radio via internet, when computer totaly crashed. I had to restart (my uptime was 9 days :-( )
Xfree, KDE, KMail, Mozilla, mplayer (radio),XMMS,mc and karamba were running. This is my syslog :

Jan 25 03:51:02 foton2 kernel: Unable to handle kernel paging request at 
virtual address 00200204
Jan 25 03:51:02 foton2 kernel:  printing eip:
Jan 25 03:51:02 foton2 kernel: c013bb35
Jan 25 03:51:02 foton2 kernel: *pde = 00000000
Jan 25 03:51:02 foton2 kernel: Oops: 0000 [#1]
Jan 25 03:51:02 foton2 kernel: CPU:    0
Jan 25 03:51:02 foton2 kernel: EIP:    0060:[<c013bb35>]    Tainted: P
Jan 25 03:51:02 foton2 kernel: EFLAGS: 00010006
Jan 25 03:51:02 foton2 kernel: EIP is at free_block+0x43/0xcb
Jan 25 03:51:02 foton2 kernel: eax: 00672c30   ebx: 00200200   ecx: e944e20c   
edx: c1000000
Jan 25 03:51:02 foton2 kernel: esi: eff3f840   edi: 00000002   ebp: eff3f84c   
esp: e21e5e98
Jan 25 03:51:02 foton2 kernel: ds: 007b   es: 007b   ss: 0068
Jan 25 03:51:02 foton2 kernel: Process karamba (pid: 844, threadinfo=e21e4000 
task=e29d2cc0)
Jan 25 03:51:02 foton2 kernel: Stack: 00000200 e21e5fc4 eff3f85c eff3d350 
d6128000 00000286 eff3e3e0 c013bcb2
Jan 25 03:51:02 foton2 kernel:        eff3f840 eff3d350 00000004 00000001 
00000001 e21e5ee0 00000004 eff3d340
Jan 25 03:51:02 foton2 kernel:        d6128000 00000286 00000000 c013be10 
eff3f840 eff3d340 c7362080 c7362080
Jan 25 03:51:02 foton2 kernel: Call Trace:
Jan 25 03:51:02 foton2 kernel:  [<c013bcb2>] cache_flusharray+0xf5/0xfa
Jan 25 03:51:02 foton2 kernel:  [<c013be10>] kfree+0x5e/0x62
Jan 25 03:51:02 foton2 kernel:  [<c011a6c4>] free_task+0x16/0x2f
Jan 25 03:51:02 foton2 kernel:  [<c011d8a9>] release_task+0x18c/0x1f3
Jan 25 03:51:02 foton2 kernel:  [<c011f161>] wait_task_zombie+0x151/0x1e4
Jan 25 03:51:02 foton2 kernel:  [<c011f5ca>] sys_wait4+0x237/0x27e
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0108fef>] syscall_call+0x7/0xb
Jan 25 03:51:02 foton2 kernel:
Jan 25 03:51:02 foton2 kernel: Code: 8b 53 04 8b 03 89 50 04 89 02 c7 43 04 00 
02 20 00 2b 4b 0c
Jan 25 03:51:02 foton2 kernel:  <6>note: karamba[844] exited with 
preempt_count 1
Jan 25 03:51:02 foton2 kernel: bad: scheduling while atomic!
Jan 25 03:51:02 foton2 kernel: Call Trace:
Jan 25 03:51:02 foton2 kernel:  [<c01193bc>] schedule+0x591/0x596
Jan 25 03:51:02 foton2 kernel:  [<c01409ed>] unmap_page_range+0x43/0x69
Jan 25 03:51:02 foton2 kernel:  [<c0140bd3>] unmap_vmas+0x1c0/0x218
Jan 25 03:51:02 foton2 kernel:  [<c0144977>] exit_mmap+0x7c/0x191
Jan 25 03:51:02 foton2 kernel:  [<c011acd4>] mmput+0x67/0xb6
Jan 25 03:51:02 foton2 kernel:  [<c011eba0>] do_exit+0x163/0x3f9
Jan 25 03:51:02 foton2 kernel:  [<c010a070>] do_divide_error+0x0/0xfb
Jan 25 03:51:02 foton2 kernel:  [<c011769e>] do_page_fault+0x1f8/0x50a
Jan 25 03:51:02 foton2 kernel:  [<c01246cd>] update_process_times+0x46/0x52
Jan 25 03:51:02 foton2 kernel:  [<c027bd3c>] kfree_skbmem+0x24/0x2c
Jan 25 03:51:02 foton2 kernel:  [<c027bdb1>] __kfree_skb+0x6d/0xde
Jan 25 03:51:02 foton2 kernel:  [<c0138818>] buffered_rmqueue+0xc1/0x15a
Jan 25 03:51:02 foton2 kernel:  [<c01174a6>] do_page_fault+0x0/0x50a
Jan 25 03:51:02 foton2 kernel:  [<c0109a19>] error_code+0x2d/0x38
Jan 25 03:51:02 foton2 kernel:  [<c013bb35>] free_block+0x43/0xcb
Jan 25 03:51:02 foton2 kernel:  [<c013bcb2>] cache_flusharray+0xf5/0xfa
Jan 25 03:51:02 foton2 kernel:  [<c013be10>] kfree+0x5e/0x62
Jan 25 03:51:02 foton2 kernel:  [<c011a6c4>] free_task+0x16/0x2f
Jan 25 03:51:02 foton2 kernel:  [<c011d8a9>] release_task+0x18c/0x1f3
Jan 25 03:51:02 foton2 kernel:  [<c011f161>] wait_task_zombie+0x151/0x1e4
Jan 25 03:51:02 foton2 kernel:  [<c011f5ca>] sys_wait4+0x237/0x27e
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0108fef>] syscall_call+0x7/0xb
Jan 25 03:51:02 foton2 kernel:
Jan 25 03:51:02 foton2 kernel: Unable to handle kernel paging request at 
virtual address 00200204
Jan 25 03:51:02 foton2 kernel:  printing eip:
Jan 25 03:51:02 foton2 kernel: c013bb35
Jan 25 03:51:02 foton2 kernel: *pde = 00000000
Jan 25 03:51:02 foton2 kernel: Oops: 0000 [#2]
Jan 25 03:51:02 foton2 kernel: CPU:    0
Jan 25 03:51:02 foton2 kernel: EIP:    0060:[<c013bb35>]    Tainted: P
Jan 25 03:51:02 foton2 kernel: EFLAGS: 00010006
Jan 25 03:51:02 foton2 kernel: EIP is at free_block+0x43/0xcb
Jan 25 03:51:02 foton2 kernel: eax: 00672c30   ebx: 00200200   ecx: e944e20c   
edx: c1000000
Jan 25 03:51:02 foton2 kernel: esi: eff3f840   edi: 00000002   ebp: eff3f84c   
esp: e5ca9e98
Jan 25 03:51:02 foton2 kernel: ds: 007b   es: 007b   ss: 0068
Jan 25 03:51:02 foton2 kernel: Process kdeinit (pid: 790, threadinfo=e5ca8000 
task=e814b2e0)
Jan 25 03:51:02 foton2 kernel: Stack: 00000001 c01766a2 eff3f85c eff3d350 
e21e4000 00000286 eff3e3e0 c013bcb2
Jan 25 03:51:02 foton2 kernel:        eff3f840 eff3d350 00000004 e5fe7c90 
c01766a2 eff37a84 00000004 eff3d340
Jan 25 03:51:02 foton2 kernel:        e21e4000 00000286 c97c9280 c013be10 
eff3f840 eff3d340 e29d2cc0 e29d2cc0
Jan 25 03:51:02 foton2 kernel: Call Trace:
Jan 25 03:51:02 foton2 kernel:  [<c01766a2>] proc_destroy_inode+0x1b/0x1f
Jan 25 03:51:02 foton2 kernel:  [<c013bcb2>] cache_flusharray+0xf5/0xfa
Jan 25 03:51:02 foton2 kernel:  [<c01766a2>] proc_destroy_inode+0x1b/0x1f
Jan 25 03:51:02 foton2 kernel:  [<c013be10>] kfree+0x5e/0x62
Jan 25 03:51:02 foton2 kernel:  [<c011a6c4>] free_task+0x16/0x2f
Jan 25 03:51:02 foton2 kernel:  [<c011d8a9>] release_task+0x18c/0x1f3
Jan 25 03:51:02 foton2 kernel:  [<c011f161>] wait_task_zombie+0x151/0x1e4
Jan 25 03:51:02 foton2 kernel:  [<c011f5ca>] sys_wait4+0x237/0x27e
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0108fef>] syscall_call+0x7/0xb
Jan 25 03:51:02 foton2 kernel:
Jan 25 03:51:02 foton2 kernel: Code: 8b 53 04 8b 03 89 50 04 89 02 c7 43 04 00 
02 20 00 2b 4b 0c
Jan 25 03:51:02 foton2 kernel:  <6>note: kdeinit[790] exited with 
preempt_count 1
Jan 25 03:51:02 foton2 kernel: bad: scheduling while atomic!
Jan 25 03:51:02 foton2 kernel: Call Trace:
Jan 25 03:51:02 foton2 kernel:  [<c01193bc>] schedule+0x591/0x596
Jan 25 03:51:02 foton2 kernel:  [<c01409ed>] unmap_page_range+0x43/0x69
Jan 25 03:51:02 foton2 kernel:  [<c0140bd3>] unmap_vmas+0x1c0/0x218
Jan 25 03:51:02 foton2 kernel:  [<c0144977>] exit_mmap+0x7c/0x191
Jan 25 03:51:02 foton2 kernel:  [<c011acd4>] mmput+0x67/0xb6
Jan 25 03:51:02 foton2 kernel:  [<c011eba0>] do_exit+0x163/0x3f9
Jan 25 03:51:02 foton2 kernel:  [<c010a070>] do_divide_error+0x0/0xfb
Jan 25 03:51:02 foton2 kernel:  [<c011769e>] do_page_fault+0x1f8/0x50a
Jan 25 03:51:02 foton2 kernel:  [<c027bb7d>] alloc_skb+0x47/0xe0
Jan 25 03:51:02 foton2 kernel:  [<c027b2c0>] sock_alloc_send_pskb+0xc3/0x1db
Jan 25 03:51:02 foton2 kernel:  [<c027d5c6>] memcpy_fromiovec+0x61/0xa8
Jan 25 03:51:02 foton2 kernel:  [<c027b407>] sock_alloc_send_skb+0x2f/0x33
Jan 25 03:51:02 foton2 kernel:  [<c0118434>] recalc_task_prio+0x92/0x19d
Jan 25 03:51:02 foton2 kernel:  [<c01174a6>] do_page_fault+0x0/0x50a
Jan 25 03:51:02 foton2 kernel:  [<c0109a19>] error_code+0x2d/0x38
Jan 25 03:51:02 foton2 kernel:  [<c013bb35>] free_block+0x43/0xcb
Jan 25 03:51:02 foton2 kernel:  [<c01766a2>] proc_destroy_inode+0x1b/0x1f
Jan 25 03:51:02 foton2 kernel:  [<c013bcb2>] cache_flusharray+0xf5/0xfa
Jan 25 03:51:02 foton2 kernel:  [<c01766a2>] proc_destroy_inode+0x1b/0x1f
Jan 25 03:51:02 foton2 kernel:  [<c013be10>] kfree+0x5e/0x62
Jan 25 03:51:02 foton2 kernel:  [<c011a6c4>] free_task+0x16/0x2f
Jan 25 03:51:02 foton2 kernel:  [<c011d8a9>] release_task+0x18c/0x1f3
Jan 25 03:51:02 foton2 kernel:  [<c011f161>] wait_task_zombie+0x151/0x1e4
Jan 25 03:51:02 foton2 kernel:  [<c011f5ca>] sys_wait4+0x237/0x27e
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0108fef>] syscall_call+0x7/0xb
Jan 25 03:51:02 foton2 kernel:
Jan 25 03:51:02 foton2 kernel: bad: scheduling while atomic!
Jan 25 03:51:02 foton2 kernel: Call Trace:
Jan 25 03:51:02 foton2 kernel:  [<c01193bc>] schedule+0x591/0x596
Jan 25 03:51:02 foton2 kernel:  [<c01409ed>] unmap_page_range+0x43/0x69
Jan 25 03:51:02 foton2 kernel:  [<c0140bd3>] unmap_vmas+0x1c0/0x218
Jan 25 03:51:02 foton2 kernel:  [<c0144977>] exit_mmap+0x7c/0x191
Jan 25 03:51:02 foton2 kernel:  [<c011acd4>] mmput+0x67/0xb6
Jan 25 03:51:02 foton2 kernel:  [<c011eba0>] do_exit+0x163/0x3f9
Jan 25 03:51:02 foton2 kernel:  [<c010a070>] do_divide_error+0x0/0xfb
Jan 25 03:51:02 foton2 kernel:  [<c011769e>] do_page_fault+0x1f8/0x50a
Jan 25 03:51:02 foton2 kernel:  [<c027bb7d>] alloc_skb+0x47/0xe0
Jan 25 03:51:02 foton2 kernel:  [<c027b2c0>] sock_alloc_send_pskb+0xc3/0x1db
Jan 25 03:51:02 foton2 kernel:  [<c027d5c6>] memcpy_fromiovec+0x61/0xa8
Jan 25 03:51:02 foton2 kernel:  [<c027b407>] sock_alloc_send_skb+0x2f/0x33
Jan 25 03:51:02 foton2 kernel:  [<c0118434>] recalc_task_prio+0x92/0x19d
Jan 25 03:51:02 foton2 kernel:  [<c01174a6>] do_page_fault+0x0/0x50a
Jan 25 03:51:02 foton2 kernel:  [<c0109a19>] error_code+0x2d/0x38
Jan 25 03:51:02 foton2 kernel:  [<c013bb35>] free_block+0x43/0xcb
Jan 25 03:51:02 foton2 kernel:  [<c01766a2>] proc_destroy_inode+0x1b/0x1f
Jan 25 03:51:02 foton2 kernel:  [<c013bcb2>] cache_flusharray+0xf5/0xfa
Jan 25 03:51:02 foton2 kernel:  [<c01766a2>] proc_destroy_inode+0x1b/0x1f
Jan 25 03:51:02 foton2 kernel:  [<c013be10>] kfree+0x5e/0x62
Jan 25 03:51:02 foton2 kernel:  [<c011a6c4>] free_task+0x16/0x2f
Jan 25 03:51:02 foton2 kernel:  [<c011d8a9>] release_task+0x18c/0x1f3
Jan 25 03:51:02 foton2 kernel:  [<c011f161>] wait_task_zombie+0x151/0x1e4
Jan 25 03:51:02 foton2 kernel:  [<c011f5ca>] sys_wait4+0x237/0x27e
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0119411>] default_wake_function+0x0/0x12
Jan 25 03:51:02 foton2 kernel:  [<c0108fef>] syscall_call+0x7/0xb

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This is ugly.

Looks like a double-free of a kernel stack. Do you have slab debugging enabled? Preempt? SMP?

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Dne ne 25. ledna 2004 05:34 jste napsal(a):

There are some important parts of my config :
CONFIG_MPENTIUM4=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_XADD=y
CONFIG_X86_L1_CACHE_SHIFT=7
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_HPET_TIMER=y
# CONFIG_HPET_EMULATE_RTC is not set
# CONFIG_SMP is not set
CONFIG_PREEMPT=y
CONFIG_X86_UP_APIC=y
CONFIG_X86_UP_IOAPIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_TSC=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_NONFATAL=y
CONFIG_X86_MCE_P4THERMAL=y
# CONFIG_TOSHIBA is not set
# CONFIG_I8K is not set
CONFIG_MICROCODE=y
CONFIG_X86_MSR=m
CONFIG_X86_CPUID=m
# CONFIG_EDD is not set
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
# CONFIG_EFI is not set
CONFIG_HAVE_DEC_LOCK=y

#
# Power management options (ACPI, APM)
#
CONFIG_PM=y
# CONFIG_SOFTWARE_SUSPEND is not set
# CONFIG_PM_DISK is not set

#
# ACPI (Advanced Configuration and Power Interface) Support #
CONFIG_ACPI=y
CONFIG_ACPI_BOOT=y
CONFIG_ACPI_INTERPRETER=y
# CONFIG_ACPI_SLEEP is not set
# CONFIG_ACPI_AC is not set
# CONFIG_ACPI_BATTERY is not set
# CONFIG_ACPI_BUTTON is not set
# CONFIG_ACPI_FAN is not set
# CONFIG_ACPI_PROCESSOR is not set
# CONFIG_ACPI_ASUS is not set
# CONFIG_ACPI_TOSHIBA is not set
# CONFIG_ACPI_DEBUG is not set
CONFIG_ACPI_BUS=y
CONFIG_ACPI_EC=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_PCI=y
CONFIG_ACPI_SYSTEM=y
# CONFIG_ACPI_RELAXED_AML is not set

#
# APM (Advanced Power Management) BIOS Support
#
# CONFIG_APM is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set

So preempt yes, SMP no.

And there is quite interesting (for me) part of dmesg :

00000030000000 (ACPI NVS)
767MB LOWMEM available.
found SMP MP-table at 000ff780
hm, page 000ff000 reserved twice.
hm, page 00100000 reserved twice.
hm, page 000fd000 reserved twice.
hm, page 000fe000 reserved twice.
On node 0 totalpages: 196416
DMA zone: 4096 pages, LIFO batch:1
Normal zone: 192320 pages, LIFO batch:16
HighMem zone: 0 pages, LIFO batch:1
DMI 2.3 present.

I had the same problem (if it is problem :-) also with 2.4
I don't know if it is problem because "everything" works fine, but maybe it
will help you(me :-). David

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What is tainting your kernel?

If it's nVidia, the most likely reason is a double free by the binary-only nVidia driver, which just hits us when we free something unrelated.

Is it in the same place? Which 2.4.x? The task free code has changed a bit with the threading stuff, and the latest RH 2.4.x kernels with the new threading code are more similar to 2.6.1 than older 2.4.x kernels are.

Linus