[pso][tema3]d_alloc error

[Onofrei Andreea-Ancuta]

Hello!

Am implementat functia de lookup si dupa citirea inode-ului corespunzator pentru direntry cu numele acpi, apelez d_add si am urmatorul output:

read_inode: ino 1, mode 16877, uid 0, gid 0, size 512
inode-ul 1 este director
am gasit inode-ul pentru acpi
------------[ cut here ]------------
kernel BUG at include/linux/dcache.h:314!
invalid opcode: 0000 [#1]
PREEMPT DEBUG_PAGEALLOC
Modules linked in: pitix netconsole vmxnet
CPU:    0
EIP:    0060:[<c01744a8>]    Tainted: P      VLI
EFLAGS: 00010246   (2.6.18 #6) 
EIP is at d_alloc+0x198/0x1c0
eax: 00000000   ebx: c2e98f50   ecx: c0669d08   edx: c2933f50
esi: c1e9001a   edi: c2933f50   ebp: c2cacdd4   esp: c2cacdbc
ds: 007b   es: 007b   ss: 0068
Process stat (pid: 4222, ti=c2cac000 task=c1d82580 task.ti=c2cac000)
Stack: c2cace28 c2933f50 c2e98f50 c2cace28 00000000 c2cacefc c2cacdfc c016a71a 
       c2cace34 c7eddaf0 c27e6d74 c27e6e0c c2933f50 c1e9001b c2cace28 c27e6d74 
       c2cace48 c016b9b5 c2cacefc c1e90014 00000000 00000000 bf0888d7 c2cace28 
Call Trace:
 [<c016a71a>] do_lookup+0xfa/0x150
 [<c016b9b5>] __link_path_walk+0x125/0xef0
 [<c016c7c4>] link_path_walk+0x44/0xe0
 [<c016ca9b>] do_path_lookup+0xbb/0x270
 [<c016d470>] __user_walk_fd+0x30/0x50
 [<c01668d6>] vfs_lstat_fd+0x16/0x40
 [<c0166971>] vfs_lstat+0x11/0x20
 [<c0166994>] sys_lstat64+0x14/0x30
 [<c010316d>] sysenter_past_esp+0x56/0x99
 [<b7f4e410>] 0xb7f4e410
Code: e8 be 52 fe ff 85 c0 74 2f 8b 4d e8 89 c2 8b 41 04 e9 c7 fe ff ff 8d 43 54 89 43 54 89 40 04 b8 20 37 39 c0 e8 aa 46 1a 00 eb ad <0f> 0b 3a 01 bc a3 33 c0 e9 6a ff ff ff 8b 55 f0 a1 28 d7 40 c0 
EIP: [<c01744a8>] d_alloc+0x198/0x1c0 SS:ESP 0068:c2cacdbc

M-am uitat prin dcache.h....dar nu prea pricep care ar fi problema.
Trebuia sa aloc ceva in functia de lookup?

Ancuta


       
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