I'm running RedHat 6.0 kernel 2.2.5-15 SMP on a single PIII 500 Dell server (this server support multi processor). System use to work well until in last few days I could not run passwd at all. It will be back to work if I restart the server but then the problem come back. Think of maybe something is wrong with passwd package ship with RedHat 6, I updated the package came with RedHat 6.1 but have the same result. Below is a sample for what I have in messages file: -------------------------------- Nov 20 13:04:34 backup1 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000024 Nov 20 13:04:34 backup1 kernel: current->tss.cr3 = 0daa0000, %cr3 = 0daa0000 Nov 20 13:04:34 backup1 kernel: *pde = 00000000 Nov 20 13:04:34 backup1 kernel: Oops: 0000 Nov 20 13:04:34 backup1 kernel: CPU: 0 Nov 20 13:04:34 backup1 kernel: EIP: 0010:[write_dquot+21/216] Nov 20 13:04:34 backup1 kernel: EFLAGS: 00010206 Nov 20 13:04:34 backup1 kernel: eax: 00000024 ebx: dc5dea40 ecx: d1a21b98 edx: 00000000 Nov 20 13:04:34 backup1 kernel: esi: dc5de9e0 edi: ffffffff ebp: 00000000 esp: cce69f6c Nov 20 13:04:34 backup1 kernel: ds: 0018 es: 0018 ss: 0018 Nov 20 13:04:34 backup1 kernel: Process passwd (pid: 29439, process nr: 53, stackpage=cce69000) Nov 20 13:04:34 backup1 kernel: Stack: ffffffff 00000000 0000c1e0 00000000 c0137f20 dc5dea40 00000000 00000000 Nov 20 13:04:34 backup1 kernel: bfffba38 bffffa38 c0128ab0 00000000 ffffffff 00000000 00000000 00000000 Nov 20 13:04:34 backup1 kernel: 00000000 cce68000 c0128ae3 00000000 cce68000 c0108b6c 40042c88 4003a8a0 Nov 20 13:04:34 backup1 kernel: Call Trace: [sync_dquots+84/116] [fsync_dev+36/52] [sys_sync+35/56] [system_call+52/56] Nov 20 13:04:34 backup1 kernel: Code: 8b 34 90 66 8b 43 2c a8 01 74 0d 53 e8 0a ff ff ff 83 c4 04 ---------------------------------- Please help. Minh
This looks a lot like a hardware problem that you're having - and some memory corruption that happens as a result and is by chance experienced when running the passwd binary If the kernel continues to Oops on you please try the development kernels from rawhide.