svn commit: r273872 - in head: etc/defaults etc/rc.d libexec/save-entropy share/examples/kld/random_adaptor sys/conf sys/dev/glxsb sys/dev/random sys/kern sys/modules sys/modules/padlock_rng sys/mo...

Alexander Kabaev kabaev at gmail.com
Sat Nov 1 22:15:45 UTC 2014


On Sat, 1 Nov 2014 14:57:02 -0700
Adrian Chadd <adrian at freebsd.org> wrote:

> Hi,
> 
> I'm having a problem with this on MIPS router boards now:
> 
> db> bt 277
> Tracing pid 277 tid 100034 td 0x80d7b9c0
> cpu_switch+90 (?,?,?,?) ra ca90db6800000000 sp 0 sz 0
> sched_switch+224 (?,?,?,?) ra ca90db6800000028 sp 0 sz 0
> mi_switch+27c (?,?,?,?) ra ca90db9000000020 sp 0 sz 0
> 80176358+1a0 (?,?,?,?) ra ca90dbb000000028 sp 0 sz 0
> 801765dc+2d0 (?,?,?,?) ra ca90dbd800000030 sp 0 sz 0
> sleepq_timedwait_sig+18 (?,?,?,?) ra ca90dc0800000020 sp 0 sz 0
> _sleep+3b8 (?,?,?,803199e0) ra ca90dc2800000068 sp 0 sz 0
> random_adaptor_read+114 (?,?,?,?) ra ca90dc9000000038 sp 0 sz 0
> 800b1898+c0 (?,?,?,?) ra ca90dcc800000048 sp 0 sz 0
> 80187450+6c (?,?,?,?) ra ca90dd1000000028 sp 0 sz 0
> kern_readv+8c (?,?,?,?) ra ca90dd3800000050 sp 0 sz 0
> sys_read+48 (?,?,?,?) ra ca90dd8800000040 sp 0 sz 0
> trap+7f0 (?,?,?,?) ra ca90ddc8000000b8 sp 0 sz 0
> MipsUserGenException+10c (?,?,?,408ed960) ra ca90de8000000000 sp 0 sz
> 0
> 
> ... I've included "random" into the kernel rather than as a module
> now.
> 
> This -looks- like it's not getting enough entropy now?
> 
> 
> 
> -adrian
> 

Me too, on amd64 box. The machine gets hung for several minutes after
'writing entropy file' until random is unblocked. Anecdotally, banging
on the keyboard trying to help the entropy gathering along seems to
speed the process up.

-- 
Alexander Kabaev
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