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Re: kern/45854
The following reply was made to PR kern/45854; it has been noted by GNATS.
From: Nat Sloss <nathanialsloss%yahoo.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc:
Subject: Re: kern/45854
Date: Sat, 7 Jul 2012 15:02:02 +1000
Hi.
I think I'm having the same trouble on 6.99.7 i386.
It happens a random for me. It happened whilst copying, sometimes after a
long while (copying 120GB), sometimes after a short while (copying 50MB).
This is the back trace:
uvm_fault(0xc0c297a0, 0, 1) -> 0xe
fatal page fault in supervisor mode
trap type 6 code 0 eip c0326575 cs 8 eflags 210213 cr2 2c ilevel 0
db{2}> bt
genfs_do_putpages(c6112f24,0,0,0,0,201b,0,c6112f24,0,201b) at
netbsd:genfs_do_pu
tpages+0x43a
genfs_putpages(dbaf3c18,0,0,0,1,0,c4214aa0,c4214aa0,0,c0ad059c) at
netbsd:genfs_
putpages+0x3f
VOP_PUTPAGES(c6112f24,0,0,0,0,201b,c0bf63c0,c852fec0,8,c4214aa0) at
netbsd:VOP_P
UTPAGES+0x68
vinvalbuf(c6112f24,1,ffffffff,c4214aa0,0,0,0,c421ef8c,0,0) at
netbsd:vinvalbuf+0
x62
vclean(c6112f24,8,c4214aa0,c4214aa0,c4214aa0,c08552aa,dbaf3d2c,c085530d,c0bf63c0
,c0bf63c0) at netbsd:vclean+0x200
cleanvnode(c0bf63c0,c0bf63c0,64,c4214aa0,c08552aa,0,0,c0100321,c4214aa0,db7000)
a
t netbsd:cleanvnode+0x9a
vdrain_thread(c4214aa0,db7000,dbf000,0,c0100307,0,0,0,0,0) at
netbsd:vdrain_thre
ad+0x63
it seams to read a null vnode maybe. This would occur on an ffs v2
filesystem.
Just a thought I don't know where the null values are coming from but would it
be possible not to add null vnodes to the free list/ or remove null entries
from the free list.
Regards,
Nat.
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