On Thu, 26 Oct 2006, Andrew Morton wrote:

On Thu, 26 Oct 2006 04:08:36 -0700
[EMAIL PROTECTED] wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=7421

           Summary: Oops, EIP is at atalk_sendmsg
    Kernel Version: 2.6.18.1
            Status: NEW
          Severity: normal
             Owner: [EMAIL PROTECTED]
         Submitter: [EMAIL PROTECTED]


Distribution: Debian sarge
Hardware Environment: i386

Problem Description:

ct 26 10:01:03 localhost papd[3120]: restart (2.0.3)
Oct 26 10:01:07 localhost kernel: BUG: unable to handle kernel NULL pointer \
                dereference at virtual address 00000000
Oct 26 10:01:07 localhost kernel:  printing eip:
Oct 26 10:01:07 localhost kernel: d0c16a8a
Oct 26 10:01:07 localhost kernel: *pde = 00000000
Oct 26 10:01:07 localhost kernel: Oops: 0000 [#1]
Oct 26 10:01:07 localhost kernel: Modules linked in: appletalk psnap llc ipv6 \
pcmcia_core af_packet parport_pc parport floppy pcspkr sn d_maestro3
snd_ac97_codec \
snd_ac97_bus snd_pcm snd_timer snd_page_alloc snd soundcore intel_agp uhci_hcd \
usbcore 3c59x mii agpgart mous edev tsdev joydev psmouse ide_cd cdrom rtc 
reiserfs \
ext3 jbd ide_disk ide_generic siimage aec62xx trm290 alim15x3 hpt34x hpt366
cmd64x  \
piix rz1000 slc90e66 generic cs5530 cs5520 sc1200 triflex atiixp pdc202xx_old \
pdc202xx_new opti621 ns87415 cy82c693 amd74xx sis5513 via 82cxxx serverworks
ide_core \
                unix
Oct 26 10:01:07 localhost kernel: CPU:    0
Oct 26 10:01:07 localhost kernel: EIP:    0060:[pg0+277633674/1070257152]    
Not \
                tainted VLI
Oct 26 10:01:07 localhost kernel: EFLAGS: 00010286   (2.6.17.14.2006-10-25 #1)
Oct 26 10:01:07 localhost kernel: EIP is at atalk_sendmsg+0x15b/0x4e4 
[appletalk]
Oct 26 10:01:07 localhost kernel: eax: 00000000   ebx: 0000002f   ecx: 00000000 
  \
                edx: 00000000
Oct 26 10:01:07 localhost kernel: esi: cadcb600   edi: 00000000   ebp: cc9d7eec 
  \
                esp: cc9d7d6c
Oct 26 10:01:07 localhost kernel: ds: 007b   es: 007b   ss: 0068
Oct 26 10:01:07 localhost kernel: Process afpd (pid: 3118, threadinfo=cc9d6000 \
                task=cfe205d0)
Oct 26 10:01:07 localhost kernel: Stack: 00000000 c02b32c0 00000000 cc9d7ee8
cffbc500 \
                00000000 d0c16f05 cffbc500
Oct 26 10:01:07 localhost kernel:        cffbc500 cc9d7ec8 cadcb600 00000000
00000000 \
                00000400 cc9d7f48 0000001b
Oct 26 10:01:07 localhost kernel:        cc9d7ec8 cc9d7e1c cc9d7ee8 c01fe97a
cc9d7e1c \
                ca252600 cc9d7ec8 0000001b
Oct 26 10:01:07 localhost kernel: Call Trace:
Oct 26 10:01:07 localhost kernel:  <d0c16f05> atalk_recvmsg+0xf2/0x105
[appletalk]  \
                <c01fe97a> sock_sendmsg+0xd0/0xeb
Oct 26 10:01:07 localhost kernel:  <c0157bfd> touch_atime+0xb4/0xbb  <c0198b22> 
\
                copy_from_user+0x34/0x5a
Oct 26 10:01:07 localhost kernel:  <c012383e> autoremove_wake_function+0x0/0x3a 
 \
                <c0198b22> copy_from_user+0x34/0x5a
Oct 26 10:01:07 localhost kernel:  <c01fe490> move_addr_to_kernel+0x24/0x39  \
                <c01ffaaa> sys_sendto+0xe9/0x10d
Oct 26 10:01:07 localhost kernel:  <c01fe67e> sock_attach_fd+0x72/0xd2  
<c0143d52> \
                get_empty_filp+0x3b/0xe4
Oct 26 10:01:07 localhost kernel:  <c0143d7b> get_empty_filp+0x64/0xe4  
<c0198ae4> \
                copy_to_user+0x32/0x3c
Oct 26 10:01:07 localhost kernel:  <c02001de> sys_socketcall+0xf2/0x180
<c0102a03> \
                syscall_call+0x7/0xb
Oct 26 10:01:07 localhost kernel: Code: 0c 83 c0 04 eb 15 c6 44 24 1a 00 0f b7
86 26 \
01 00 00 66 89 44 24 18 8d 44 24 18 50 e8 e0 eb ff  ff 89 44 24 04 85 f6 5d 8b
14 24 \
                <8b> 12 89 54 24 04 74 1b 8b 86 84 00 00 00 f6 c4 04 74 10 52 53
Oct 26 10:01:07 localhost kernel: EIP: [pg0+277633674/1070257152] \
                atalk_sendmsg+0x15b/0x4e4 [appletalk] SS:ESP 0068:cc9d7d6c
Oct 26 10:01:21 localhost atalkd[3106]: as_timer gateway 8000.100 down



Steps to reproduce:
restart the machine, start "papd" after network initializing has finished
a second start of "papd" works fine

appletalk is loades as module

same behaviour with 2.6.17.14

Something like "me too":

Unable to handle kernel NULL pointer dereference at virtual address 00000000
 printing eip:
c036b1ef
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: bonding
CPU:    0
EIP:    0060:[<c036b1ef>]    Not tainted VLI
EFLAGS: 00010286   (2.6.15.1)
EIP is at atalk_sendmsg+0x158/0x557
eax: d468fee4   ebx: 00000017   ecx: d468fd20   edx: 00000000
esi: 00000000   edi: d7e88200   ebp: bfa7c480   esp: d468fd68
ds: 007b   es: 007b   ss: 0068
Process atalkd (pid: 551, threadinfo=d468e000 task=d6f55090)
Stack: 00000000 d468ff40 00000000 d468fee0 d70d20a0 00000003 c036b6e0 d70d20a0
       d70d20a0 d468fec0 d7e88200 00000000 00000000 00000400 d468ff40 00000003
       d468fec0 d468fe18 bfa7c480 c02e2d5e d468fe18 d7194540 d468fec0 00000003
Call Trace:
 [<c036b6e0>] atalk_recvmsg+0xf2/0x105
 [<c02e2d5e>] sock_sendmsg+0xce/0xe9
 [<c01212c2>] run_timer_softirq+0x185/0x1a0
 [<c012ab68>] autoremove_wake_function+0x0/0x3a
 [<c02e3dba>] sys_sendto+0xcb/0xe9
 [<c013ac70>] free_hot_cold_page+0x78/0xfb
 [<c0161411>] do_select+0x299/0x2ae
 [<c02e4499>] sys_socketcall+0x114/0x1a4
 [<c0102c37>] sysenter_past_esp+0x54/0x75
Code: 0c 83 c0 04 eb 15 c6 44 24 1a 00 0f b7 87 26 01 00 00 66 89 44 24 18 8d 44 24 
18 50 e8 d8 e9 ff ff 89 44 24 04 58 85 ff 8b 14 24 <8b> 12 89 54 24 04 74 1b 8b 
87 80 00 00 00 f6 c4 04 74 10 52 53

Anyway, I have no idea how to reproduce this problem. This server have been up for 49 days so it seems that this is not a very critical problem, but still annoying.

Best regards,


                                Krzysztof Olędzki

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