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Subject2.5.62 and NFS, a BUG
Hi,

I just booted 2.5.62 and got the following during boot/init:


Unable to handle kernel NULL pointer dereference at virtual address 00000286
printing eip:
c0183e11
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0060:[<c0183e11>] Not tainted
EFLAGS: 00010203
EIP is at d_alloc+0x51/0x370
eax: 00000286 ebx: ca271e4c ecx: 000000a1 edx: caa1780c
esi: 00000286 edi: caa1780c ebp: ca2f7c04 esp: ca2f7b7c
ds: 007b es: 007b ss: 0068
Process mount (pid: 224, threadinfo=ca2f6000 task=ca89f320)
Stack: 0000029c 000000d0 00000038 00000000 cbf57148 ca2f6000 ca2f6000 00000800
00000000 00000286 cbfef350 00000286 00000000 ca274d48 ca22e724 ca2f7c04
fffffff4 ca274d48 ca22e724 ca2f7c04 c01790a9 ca22e724 ca2f7c04 00000000
Call Trace:
[<c01790a9>] lookup_hash+0x89/0xd0
[<c036c793>] rpc_rmdir+0x93/0xe0
[<c0354d89>] rpc_destroy_client+0x29/0x80
[<c035d1ff>] rpc_release_task+0x2af/0x4b0
[<c0355eee>] call_decode+0xde/0x1d0
[<c035c554>] __rpc_execute+0x514/0x5b0
[<c035f513>] rpcauth_bindcred+0x83/0xd0
[<c011e950>] default_wake_function+0x0/0x20
[<c035537d>] rpc_call_sync+0xbd/0x100
[<c035a950>] rpc_run_timer+0x0/0x1f0
[<c0366e35>] rpc_register+0xc5/0x140
[<c0110000>] handle_vm86_fault+0x50/0x8e0
[<c036097e>] svc_register+0x26e/0x2e0
[<c01494c5>] kmalloc+0x95/0xd0
[<c03602ed>] svc_create+0x10d/0x120
[<c01f3fb3>] lockd_up+0x73/0x180
[<c01e332f>] nfs_fill_super+0x35f/0x3f0
[<c016da82>] sget+0x242/0x300
[<c0149401>] kmem_cache_alloc+0x71/0xa0
[<c01e4fcc>] nfs_get_sb+0x1ac/0x240
[<c016f12b>] do_kern_mount+0x5b/0xd0
[<c018caf0>] do_add_mount+0xa0/0x1b0
[<c018ce40>] do_mount+0x160/0x1b0
[<c018ccda>] copy_mount_options+0xda/0xe0
[<c018d396>] sys_mount+0xb6/0xf0
[<c010c28f>] syscall_call+0x7/0xb

Code: f3 a5 a8 02 74 02 66 a5 a8 01 74 01 a4 8b 45 04 c6 04 10 00


Should further elaborations, ksymoops runs or such like be
required, let me know. I am open for testing patches.

Regards,
Rasmus
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