panic in vimage/jamie_jail_set

[Julian Elischer]

Julian Elischer wrote:
> James Gritton wrote:
>> I haven't seen the panic you describe, but on a jail_set_vimage 
>> integrated from the latest vimage code, I get a similar idle network 
>> panic.
>>
>> This happens in tcp_hc_purge(), which clearly expected a struct vnet 
>> pointer as its argument, but is only ever called with NULL.  It seems 
>> reasonable to pass tcp_hc_init's curvnet as the argument, but I don't 
>> know if there are referencing issues.

(btw curvnet was what was there before the mismerge)

> 
> I've made a change that fixes a mismerge
> where teh callout_reset was called and told to call tcp_hc_purge with a 
> null instead of the current vnet.
> 
> Bjoern, see if that helps.. (just tcp_hostcache.c needs fixing)
>
>
>> - Jamie
>>
>>
>> Bjoern A. Zeeb wrote:
>>> Hi,
>>>
>>> I had a jamie_jail_set kernel running from
>>> db> x/s version
>>> version:        FreeBSD 8.0-CURRENT #0: Fri Aug 15 10:01:11 UTC 2008 ...
>>>
>>> and it paniced while standing idle. I am not sure if that had been
>>> fixed in the vimage branch but not integrated into jamie_jail_set or
>>> if this was a different issue to what kris had seen?
>>>
>>> Unfortunately the console hasn't been to reliable, so this is what I 
>>> have:
>>>
>>> panic: in ../../../netinet/tcp_usrreq.c:1281 tcp_ctloutput()^M^@
>>>  vnet=0xc7067000 curvnet=0^M^@
>>> cpuid = 0^M^@
>>> KDB: enter: panic^M^@
>>> [thread pid 852 tid 100051 ]^M^@
>>> Stopped at      kdb_enter+0x3a: movl    $0,kdb_why^M^@
>>>
>>> Tracing pid 852 tid 100051 td 0xc74f5d20
>>> kdb_enter(c0b04531,c0b04531,c0b05c88,c6f4b59c,0,...) at kdb_enter+0x3a
>>> panic(c0b05c88,c0b1cb7f,501,c0a9f8a2,c7067000,...) at panic+0x12c
>>> tcp_ctloutput(c7546c60,c6f4b744,c07f3c0a,c7546c60,0,...) at 
>>> tcp_ctloutput+0x5e
>>> sosetopt(c7546c60,c6f4b744,1,0,c73b6400,...) at sosetopt+0x3d
>>> nfs_connect(c7467000,c7670000,c0b20436,21d,c7670044,...) at 
>>> nfs_connect+0x1b9
>>> nfs_reconnect(c7670044,0,c0b20436,2e2,0,...) at nfs_reconnect+0x15e
>>> nfs_request(c725bb84,c7379400,4,c74f5d20,c7547900,...) at 
>>> nfs_request+0x6c3
>>> nfs3_access_otw(c7547900,0,c0b20ac9,180,0,...) at nfs3_access_otw+0xde
>>> nfs_access(c6f4b9cc,c6f4b9b4,c077bed7,c74f5d20,c6f4ba18,...) at 
>>> nfs_access+0x15e
>>> VOP_ACCESS_APV(c0bf16a0,c6f4b9cc,c6f4b954,0,c6f4b95c,...) at 
>>> VOP_ACCESS_APV+0xa5
>>> nfs_lookup(c6f4ba78,c6f4ba78,5000044,80000,c725bb84,...) at 
>>> nfs_lookup+0xcb
>>> VOP_LOOKUP_APV(c0bf16a0,c6f4ba78,c0b0fd3c,1b0,c6f4bb9c,...) at 
>>> VOP_LOOKUP_APV+0xa5
>>> lookup(c6f4bb84,c0b0fd3c,d8,c0,c7547e2c,...) at lookup+0x57e
>>> namei(c6f4bb84,c6f4bb24,60,0,c74f5d20,...) at namei+0x44b
>>> kern_statat(c74f5d20,0,ffffff9c,804ec77,0,...) at kern_statat+0x64
>>> kern_stat(c74f5d20,804ec77,0,c6f4bc18,6b,...) at kern_stat+0x36
>>> stat(c74f5d20,c6f4bcf8,8,c0b0a981,c0bd7400,...) at stat+0x2f
>>> syscall(c6f4bd38) at syscall+0x2a3
>>> Xint0x80_syscall() at Xint0x80_syscall+0x20
>>> --- syscall (188, FreeBSD ELF32, stat), eip = 0x28163c6b, esp = 
>>> 0xbfbfea3c, ebp = 0xbfbfed38 ---
>>>
>>> /bz
>>>
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