debugging frequent kernel panics on 8.2-RELEASE

[Andriy Gapon]

on 17/08/2011 15:15 Steven Hartland said the following:
>> define allpcpu
>> set $i = 0
>> while ($i <= mp_maxid)
>> p *cpuid_to_pcpu[$i]
>> set $i = $i + 1
>> end
>> end
>> allpcpu
> 
> Here's the output.
[snip]
> $3 = {pc_curthread = 0xffffff06b7f9c000, pc_idlethread = 0xffffff0012d85460,
> pc_fpcurthread = 0x0, pc_deadthread = 0x0, pc_curpcb = 0xffffff8d8f35ad00,
> pc_switchtime = 564139963042291, pc_switchticks = 247796550, pc_cpuid = 2,
>  pc_cpumask = 4, pc_other_cpus = 16777211, pc_allcpu = {sle_next =
> 0xffffffff808af680}, pc_spinlocks = 0x0, pc_cnt = {v_swtch = 1005391948, v_trap =
> 95927887, v_syscall = 2033274537, v_intr = 137253, v_soft = 151981308,
>    v_vm_faults = 14199910, v_cow_faults = 1468132, v_cow_optim = 533, v_zfod =
> 11032593, v_ozfod = 0, v_swapin = 0, v_swapout = 0, v_swappgsin = 0, v_swappgsout
> = 0, v_vnodein = 17238, v_vnodeout = 48, v_vnodepgsin = 17238,
>    v_vnodepgsout = 378, v_intrans = 6753, v_reactivated = 0, v_pdwakeups = 0,
> v_pdpages = 0, v_tcached = 0, v_dfree = 0, v_pfree = 0, v_tfree = 15435380,
> v_page_size = 0, v_page_count = 0, v_free_reserved = 0,
>    v_free_target = 0, v_free_min = 0, v_free_count = 0, v_wire_count = 0,
> v_active_count = 0, v_inactive_target = 0, v_inactive_count = 0, v_cache_count =
> 0, v_cache_min = 0, v_cache_max = 0, v_pageout_free_min = 0,
>    v_interrupt_free_min = 0, v_free_severe = 0, v_forks = 24041, v_vforks = 16857,
> v_rforks = 0, v_kthreads = 0, v_forkpages = 6281292, v_vforkpages = 3606842,
> v_rforkpages = 0, v_kthreadpages = 0}, pc_cp_time = {8629094,
>    693, 594838, 24425, 23707811}, pc_device = 0xffffff0012da2500, pc_netisr = 0x0,
> pc_rm_queue = {rmq_next = 0xffffffff808afa50, rmq_prev = 0xffffffff808afa50},
> pc_dynamic = 18446743526093326592,
>  pc_monitorbuf = '\0' <repeats 127 times>, pc_prvspace = 0xffffffff808af900,
> pc_curpmap = 0xffffffff8083ea50, pc_tssp = 0xffffffff808ae7d0, pc_commontssp =
> 0xffffffff808ae7d0, pc_rsp0 = -491518579456,
>  pc_scratch_rsp = 140737488347240, pc_apic_id = 2, pc_acpi_id = 2, pc_fs32p =
> 0xffffffff808ad600, pc_gs32p = 0xffffffff808ad608, pc_ldt = 0xffffffff808ad648,
> pc_tss = 0xffffffff808ad638, pc_cmci_mask = 8}
[snip]

Thank you.
A few more questions:
1. more kgdb info for the core:
p *(cpuid_to_pcpu[2]->pc_curthread)
p *(cpuid_to_pcpu[2]->pc_curthread->td_proc)
p *(cpuid_to_pcpu[2]->pc_curthread->td_proc->p_limit)

2. do you have any additional patches in your source tree besides those debugging
patches that I provided to you?

3. do you have any thirdparty/out-of-tree kernel modules?

4. could you please send me your kernel config?

-- 
Andriy Gapon