Date: Wed, 17 Aug 2011 15:56:31 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-stable@FreeBSD.org Subject: Re: debugging frequent kernel panics on 8.2-RELEASE Message-ID: <4E4BBA7F.30907@FreeBSD.org> In-Reply-To: <581C95046B0948FC82D6F2E86948F87B@multiplay.co.uk> References: <47F0D04ADF034695BC8B0AC166553371@multiplay.co.uk><A71C3ACF01EC4D36871E49805C1A5321@multiplay.co.uk><4E4380C0.7070908@FreeBSD.org><EBC06A239BAB4B3293C28D793329F9CA@multiplay.co.uk> <4E43E272.1060204@FreeBSD.org> <62BF25D0ED914876BEE75E2ADF28DDF7@multiplay.co.uk> <4E440865.1040500@FreeBSD.org> <6F08A8DE780545ADB9FA93B0A8AA4DA1@multiplay.co.uk> <4E441314.6060606@FreeBSD.org> <2C4B0D05C8924F24A73B56EA652FA4B0@multiplay.co.uk> <4E48D967.9060804@FreeBSD.org> <9D034F992B064E8092E5D1D249B3E959@multiplay.co.uk> <4E490DAF.1080009@FreeBSD.org> <796FD5A096DE4558B57338A8FA1E125B@multiplay.co.uk> <4E491D01.1090902@FreeBSD.org> <570C5495A5E242F7946E806CA7AC5D68@multiplay.co.uk> <4E4AD35C.7020504@FreeBSD.org> <6A7238AED44542A880B082A40304D940@multiplay.co.uk> <4E4BA21F.6010805@FreeBSD.org> <581C95046B0948FC82D6F2E86948F87B@multiplay.co.uk>
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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
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