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Date:      Tue, 07 Feb 2012 12:23:08 -0800
From:      Marcel Moolenaar <xcllnt@mac.com>
To:        Anton Shterenlikht <mexas@bristol.ac.uk>
Cc:        freebsd-ia64@freebsd.org
Subject:   Re: fatal kernel trap
Message-ID:  <6653621C-ABF4-4835-AA2C-4325DDC29467@mac.com>
In-Reply-To: <20120207200022.GA89641@mech-cluster241.men.bris.ac.uk>
References:  <20120206142239.GA71689@mech-cluster241.men.bris.ac.uk> <20120206144444.GA71830@mech-cluster241.men.bris.ac.uk> <20120207094713.GA81250@mech-cluster241.men.bris.ac.uk> <20120207102305.GA81545@mech-cluster241.men.bris.ac.uk> <20120207111557.GA82299@mech-cluster241.men.bris.ac.uk> <20120207174649.GA89244@mech-cluster241.men.bris.ac.uk> <28AF5668-F785-49DB-98A0-0D037C173C9B@mac.com> <20120207200022.GA89641@mech-cluster241.men.bris.ac.uk>

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On Feb 7, 2012, at 12:00 PM, Anton Shterenlikht wrote:

> On Tue, Feb 07, 2012 at 09:54:46AM -0800, Marcel Moolenaar wrote:
>> 
>> On Feb 7, 2012, at 9:46 AM, Anton Shterenlikht wrote:
>>>> db> bt
>>>> Tracing pid 3832 tid 100130 td 0xe000000012122000
>>>> cpu_set_upcall(0xe000000012120cf0, 0xe000000012122000, 0xa0000000f8913780, 0xa0000000f8913550) at cpu_set_upcall+0x190
>>>> create_thread(0xe000000012122000, 0x0, 0x14064bac0, 0x140804800, 0x7ffffffff3bfe000, 0xc000000, 0x14008c200, 0x140804800) at create_thread+0x1c0
>>>> kern_thr_new(0xe000000012122000, 0xa0000000f88f3330, 0x9ffc0000004363d0) at kern_thr_new+0x100
>>>> sys_thr_new(0xe000000012122000, 0xa0000000f88f34e8, 0x9ffc0000008ccbf0, 0x48d) at sys_thr_new+0xa0
>>>> syscall(0xe000000012112d50, 0xa0000000f88f33a8, 0x14080442c, 0xe000000012122000, 0x0, 0x0, 0x9ffc0000008c80a0, 0x8) at syscall+0x550
>>>> epc_syscall_return() at epc_syscall_return
>>>> db> 
>>> 
>>> Marcel, these panics make the system unusable on
>>> r231087, r231124. I'll try to roll back 1000 or
>>> so and try again. Let me know if you want
>>> any more info on this panic.
>> 
>> This looks like a regression caused by changes to either
>> libthr or MI kernel code, for which no MD ia64 code
>> changes were made, though needed. The backtrace is too
>> regular...
>> 
>> I'll take a look at it. If you have a simple trigger
>> case, let me know.
> 
> csup(1) causes this panic every time.
> Something like "csup -L0 ports-supfile"
> immediately triggers the trap.

Ok, thanks. Let me take a look.

-- 
Marcel Moolenaar
xcllnt@mac.com






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