Re: panic: vclean: cannot relock.

From: Jeff Roberson (jroberson_at_chesapeake.net)
Date: 01/31/05

  • Next message: Kris Kennaway: "Re: panic: vclean: cannot relock." 
    Date: Mon, 31 Jan 2005 13:13:10 -0500 (EST)
To: Kris Kennaway <kris@obsecurity.org>

    On Sun, 30 Jan 2005, Kris Kennaway wrote:

    > After updating with your fix from yesterday:
    >

    Are you running with smpvfs = 1 or 0? Can you enable KTR_LOCK in your
    kernel and give me KTR output if this reoccurs?

    Cheers,
    jeff

    > panic: vclean: cannot relock.
    > cpuid = 2
    > KDB: enter: panic
    > [thread pid 48038 tid 100358 ]
    > Stopped at kdb_enter+0x30: leave
    > db> where
    > Tracing pid 48038 tid 100358 td 0xcef90b80
    > kdb_enter(c06f4a48,2,c06fd644,ee547b14,cef90b80) at kdb_enter+0x30
    > panic(c06fd644,12,cef90b80,c06fd21d,904) at panic+0x13e
    > vgonel(cc10ec30,cef90b80,c06fd21d,839,81b) at vgonel+0x1e4
    > vflush(c375cc00,1,2,cef90b80,0) at vflush+0x36d
    > nullfs_unmount(c375cc00,8080000,cef90b80,cef90b80,c06ee579) at nullfs_unmount+0x36
    > dounmount(c375cc00,8080000,cef90b80,37b,218ffdb) at dounmount+0x2b7
    > unmount(cef90b80,ee547d14,c070fb7b,3ad,2) at unmount+0x271
    > syscall(2f,2f,2f,804a619,bfbfe74a) at syscall+0x271
    > Xint0x80_syscall() at Xint0x80_syscall+0x1f
    > --- syscall (22, FreeBSD ELF32, unmount), eip = 0x280c5ad3, esp = 0xbfbfe4dc, ebp = 0xbfbfe598 ---
    > db> show lockedvnods
    > Locked vnodes
    > (null)
    > 0xcdb2e4e0: tag ufs, type VDIR
    > usecount 6, writecount 0, refcount 2 mountedhere 0
    > flags ()
    > v_object 0xcde25bdc
    > lock type ufs: EXCL (count 1) by thread 0xc3514b80 (pid 48047)
    > ino 1130617, on dev da0s1e (235, 8)
    > (null)
    > 0xc3c03750: tag ufs, type VDIR
    > usecount 0, writecount 0, refcount 1 mountedhere 0
    > flags ()
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3514b80 (pid 48047)
    > ino 1083598, on dev da0s1e (235, 8)
    > (null)
    > 0xc9e27c30: tag ufs, type VDIR
    > usecount 6, writecount 0, refcount 2 mountedhere 0
    > flags ()
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3cd5730 (pid 48044)
    > ino 662978, on dev da0s1e (235, 8)
    > (null)
    > 0xccd20c30: tag ufs, type VNON
    > usecount 1, writecount 0, refcount 0 mountedhere 0
    > flags ()
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3cd5730 (pid 48044)
    > ino 768818, on dev da0s1e (235, 8)
    > (null)
    > 0xcd06f270: tag null, type VDIR
    > usecount 1, writecount 0, refcount 0 mountedhere 0
    > flags (VV_ROOT)
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3cd5730 (pid 48044)
    > vp=0xcd06f270, lowervp=0xc9e27c30
    > (null)
    > 0xcbc263a8: tag null, type VDIR
    > usecount 1, writecount 0, refcount 0 mountedhere 0
    > flags (VV_ROOT)
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3514b80 (pid 48047)
    > vp=0xcbc263a8, lowervp=0xcdb2e4e0
    > (null)
    > 0xcd306d68: tag null, type VDIR
    > usecount 2, writecount 0, refcount 0 mountedhere 0
    > flags (VV_ROOT)
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3cd5730 (pid 48044)
    > vp=0xcd306d68, lowervp=0xc9e27c30
    > (null)
    > 0xcc14ad68: tag null, type VDIR
    > usecount 1, writecount 0, refcount 0 mountedhere 0
    > flags (VV_ROOT)
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3514b80 (pid 48047)
    > vp=0xcc14ad68, lowervp=0xcdb2e4e0
    > (null)
    > 0xc45ca138: tag null, type VDIR
    > usecount 1, writecount 0, refcount 0 mountedhere 0
    > flags (VV_ROOT)
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3cd5730 (pid 48044)
    > vp=0xc45ca138, lowervp=0xc9e27c30
    > (null)
    > 0xcc10ec30: tag null, type VDIR
    > usecount 2, writecount 0, refcount 0 mountedhere 0
    > flags (VV_ROOT|VI_XLOCK)
    > v_object 0
    > lock type ufs: EXCL (count 1) by thread 0xc3514b80 (pid 48047)
    > vp=0xcc10ec30, lowervp=0xcdb2e4e0
    > db>

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