Fwd: Re: SUSPECT: Re: [pso] [tema2]linux - eroare in intrerupere

[Octavian Purdila]

----------  Forwarded Message  ----------

Subject: Re: SUSPECT: Re: [pso] [tema2]linux - eroare in intrerupere
Date: Wednesday 18 April 2007 18:31
From: omar Chouydary <chouydary at yahoo.com>
To: Octavian Purdila <tavi at cs.pub.ro>

Am reusit sa instalez netconsole. Pentru cei care nu l-au folosit sau care nu stiu aici e link-ul cu informatia:
  http://www.debian-administration.org/articles/492
  De asemeni in windows se poate folosi netcat (search google netcat windows) si merge ok.
  Dump-ul este acesta:
  uart_driver loaded
Tipu= 0 si size= 0
slab error in verify_redzone_free(): cache `size-32': double free detected
 [<c0104936>] show_trace_log_lvl+0x176/0x190
 [<c0104f0d>] show_trace+0xd/0x10
 [<c0104fc9>] dump_stack+0x19/0x20
 [<c0157ef8>] __slab_error+0x18/0x20
 [<c0158664>] cache_free_debugcheck+0x1d4/0x2d0
 [<c0158909>] kfree+0x79/0xf0
 [<d883d69f>] uart16550_close+0x9f/0xe0 [uart16550]
 [<c015dc4c>] __fput+0xac/0x1e0
 [<c015ddd8>] fput+0x18/0x20
 [<c015b1ce>] filp_close+0x3e/0x70
 [<c0118fc1>] put_files_struct+0xb1/0xc0
 [<c011a102>] do_exit+0x182/0x940
 [<c011a8eb>] do_group_exit+0x2b/0x80
 [<c011a950>] sys_exit_group+0x10/0x20
 [<c010316d>] sysenter_past_esp+0x56/0x99
 [<b7fad410>] 0xb7fad410
cd5fd9ac: redzone 1:0x5a2cf071, redzone 2:0x5a2cf071.
------------[ cut here ]------------
kernel BUG at mm/slab.c:2747!
invalid opcode: 0000 [#1]
PREEMPT DEBUG_PAGEALLOC
Modules linked in: uart16550 netconsole vmhgfs vmxnet
CPU:    0
EIP:    0060:[<c0158731>]    Tainted: P      VLI
EFLAGS: 00010006   (2.6.18 #6)
EIP is at cache_free_debugcheck+0x2a1/0x2d0
eax: 000fe528   ebx: 80052c00   ecx: 00001000   edx: 00000000
esi: cdb93000   edi: d7eef800   ebp: d56a5d30   esp: d56a5d00
ds: 007b   es: 007b   ss: 0068
Process syslogd (pid: 2196, ti=d56a5000 task=d56a4580 task.ti=d56a5000)
Stack: 000fe528 c02b84cd 00181760 cd5fd9b0 00000246 00000002 00000002 cc0bb000
       00000246 d7eef800 d7ee0f38 cc0bbef8 d56a5d48 c0158909 00000282 d57b2f5c
       d57b2f5c d56a5d9c d56a5d58 c02b84cd d57b2f5c d57b2f5c d56a5d64 c02b82bb
Call Trace:
 [<c0158909>] kfree+0x79/0xf0
 [<c02b84cd>] skb_release_data+0x4d/0x90
 [<c02b82bb>] kfree_skbmem+0xb/0x80
 [<c02b838e>] __kfree_skb+0x5e/0xd0
 [<c02b8419>] kfree_skb+0x19/0x30
 [<c02ba6fa>] skb_free_datagram+0xa/0x10
 [<c030e310>] unix_dgram_recvmsg+0x130/0x1f0
 [<c02b27a2>] sock_recvmsg+0xd2/0x100
 [<c02b3e97>] sys_recvfrom+0x87/0xe0
 [<c02b3f0c>] sys_recv+0x1c/0x20
 [<c02b42c6>] sys_socketcall+0x116/0x1e0
 [<c010316d>] sysenter_past_esp+0x56/0x99
 [<b7f90410>] 0xb7f90410
Code: 76 0b 83 c3 04 f7 c3 fc 0f 00 00 75 cd 8b 45 e8 c7 00 21 43 65 87 8b 5f 10
 e9 6a ff ff ff 0f 0b bc 0a 9b bf 33 c0 e9 03 fe ff ff <0f> 0b bb 0a 9b bf 33 c0
 e9 e4 fd ff ff 0f 0b 60 02 9b bf 33 c0
EIP: [<c0158731>] cache_free_debugcheck+0x2a1/0x2d0 SS:ESP 0068:d56a5d00
 <0>Kernel panic - not syncing: Fatal exception
  

Octavian Purdila <tavi at cs.pub.ro> wrote:
  On Wednesday 18 April 2007 15:16, omar Chouydary wrote:
> Problema este ca nu pot sa prind dump-ul ca am tot incercat. Dupa ce se blocheaza masinutza dau restart (CTRL+R), porneste dar fie nu este nimic in fisierul eror (apelasem mai devreme ./tema2 2>eror) fie nu exista acel fisier. Iar dmesg retine doar informatia de la pornirea curenta.
> Tot ce am reusit este sa fac un screenshot la ce a ramas (ultima pagina a dump-ului). Este atasat aici.
> Ma gandesc sa nu fie de la masina virtuala de windows, sa nu-i placa acel pipe or smth de asta intrebam daca a facut cineva ok tema folosind masina virtuala de windows.
> 

Nu mai tin minte, dar parca masina virtuala de Linux are instalata netconsole. Configureaza-l astfel incat sa trimita pachetele catre IP-ul masinii tale host, si apoi porneste un program pe host care sa iti prinda pachetele. In felul asta o sa poti sa prinzi dump-ul. 

tavi


       
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