Re: Filesystem tests crashing host

[Paul Goyette <paul%whooppee.com@localhost>]

On Wed, 13 Apr 2011, Paul Goyette wrote:

> > Cannot reproduce the problem by running tests in src/tests/fs on my host.
> > Nor I really see how semaphore would affect file systems (file.h change
> > should have no harm).  Also, new semaphore code itself was tested, and
> > seem to work for me well.
> >
> > Can you collect more data?
>
> I'm working on getting a backtrace out of ddb.  But I'm also having trouble 
> with reproducing it locally.  It fails frequently on the automated test bed, 
> but not if I run it manually.  :(

Gotcha!   :)

fs/vfs/t_renamerace (129/400): 22 test cases
    ext2fs_renamerace: Passed.
    ext2fs_renamerace_dirs: Expected failure: PR kern/43626
    ffs_renamerace: Passed.
    ffs_renamerace_dirs: Expected failure: PR kern/43626
    ffslog_renamerace: Passed.
    ffslog_renamerace_dirs: Expected failure: PR kern/43626
    lfs_renamerace: Expected failure: PR kern/43582
    lfs_renamerace_dirs: Expected failure: PR kern/43626
    msdosfs_renamerace: Expected failure: PR kern/44661: unmount failed: Device 
busy
    msdosfs_renamerace_dirs: Expected failure: PR kern/43626
    nfs_renamerace: Passed.
    nfs_renamerace_dirs:

uvm_fault(0xffffffff80ca65e0, 0xffffffff80eff000, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff80464902 cs 8 rflags 286 cr2 
ffffffff80effaf0 cpl 0 rsp ffff80000b72b9e0
kernel: page fault trap, code=0
Stopped in pid 12792.19 (rumpnfsd) at  netbsd:closef+0x5d:  call  *0x30(%rax)
?
db{0}> bt
closef() at netbsd:closef+0x5d
fd_free() at netbsd:fd_free+0xb5
exit1() at netbsd:exit1+0x10e
sigexit() at netbsd:sigexit+0x182
postsig() at netbsd:postsig+0xc5
lwp_userret() at netbsd:lwp_userret+0x15c
syscall() at netbsd:syscall+0x13a
db{0}>



-------------------------------------------------------------------------
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:       |
| Customer Service | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com    |
| Network Engineer | 0786 F758 55DE 53BA 7731 | pgoyette at juniper.net |
| Kernel Developer |                          | pgoyette at netbsd.org  |
-------------------------------------------------------------------------