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Date: Thu, 15 Sep 2005 23:27:48 +0400
From: Andrey Chernov <ache@freebsd.org>
To: current@freebsd.org, phk@freebsd.org
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Subject: Recent kernel panic (devfs locking)
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#2  0xc049ae1d in panic (fmt=0xc05d224a "lockmgr: upgrade exclusive lock")
    at ../../../kern/kern_shutdown.c:555
#3  0xc048dcf6 in lockmgr (lkp=0xc18468d8, flags=3, interlkp=0x0,
    td=0xc1618a80) at ../../../kern/kern_lock.c:266
#4  0xc0459225 in devfs_populate (dm=0xc18468c0) at pcpu.h:162
#5  0xc045c161 in devfs_rioctl (ap=0xd5471bf0)
    at ../../../fs/devfs/devfs_vnops.c:974
#6  0xc05bd610 in VOP_IOCTL_APV (vop=0x0, a=0xd5471bf0) at vnode_if.c:804
#7  0xc05031d9 in vn_ioctl (fp=0xc17aae10, com=2147632138, data=0xc16b8bd0,
    active_cred=0xc1582d00, td=0xc1618a80) at vnode_if.h:436
#8  0xc04c1ad8 in ioctl (td=0xc1618a80, uap=0xd5471d04) at file.h:258
#9  0xc05b365f in syscall (frame=
      {tf_fs = 59, tf_es = 59, tf_ds = 59, tf_edi = -1077940564, tf_esi = -1077940390, tf_ebp = -1077940664, tf_isp = -716759708, tf_ebx = 134525812, tf_edx = 1, tf_ecx = -1077940732, tf_eax = 54, tf_trapno = 12, tf_err = 2, tf_eip = 672323951, tf_cs = 51, tf_eflags = 646, tf_esp = -1077940692, tf_ss = 59})
    at ../../../i386/i386/trap.c:986
#10 0xc05a4d8f in Xint0x80_syscall () at ../../../i386/i386/exception.s:200

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