LOR

[Bjoern A. Zeeb]

On Mon, 1 May 2006, Vlad GALU wrote:

Hi,

added with LOR ID 187 to the LOR page:
 	http://sources.zabbadoz.net/freebsd/lor.html#187

> 6.1 RC
>
> -- cut here --
>
> lock order reversal:
> 1st 0xc075b5a0 cdev (cdev) @ kern/kern_conf.c:61
> 2nd 0xc637e8c8 sleep mtxpool (sleep mtxpool) @ kern/kern_prot.c:1860
> KDB: stack backtrace:
> witness_checkorder(c637e8c8,9,c06fdd58,744,c83e0a00) at 
> witness_checkorder+0x3bb
> _mtx_lock_flags(c637e8c8,0,c06fdd58,744,c83e0a00) at _mtx_lock_flags+0x37
> crhold(c8f15e00,40,20,c0702ae5,e8f2182c) at crhold+0x2d
> make_dev_credv(c8f15e00,0,0,1b6,c0702ae5) at make_dev_credv+0x82
> make_dev_cred(c0737a20,0,c8f15e00,0,0) at make_dev_cred+0x3a
> pty_clone(0,c8f15e00,e8f21922,5,e8f21894) at pty_clone+0xcf
> devfs_lookup(e8f219a0,e8f2194c,c94b3dd0,e8f219a0,e8f219bc) at 
> devfs_lookup+0x4a4
> VOP_LOOKUP_APV(c0729ea0,e8f219a0,e8f21be8,c9542600,0) at VOP_LOOKUP_APV+0x3b
> lookup(e8f21bc0,0,c07044a4,b6,c0762800) at lookup+0x328
> namei(e8f21bc0,c637e8c8,0,246,0) at namei+0x2da
> vn_open_cred(e8f21bc0,e8f21cc0,0,c8f15e00,6) at vn_open_cred+0x1a2
> vn_open(e8f21bc0,e8f21cc0,0,6,e8f21b68) at vn_open+0x33
> kern_open(c9542600,bfbfdc60,0,3,0) at kern_open+0xd2
> open(c9542600,e8f21d04,c,c0701c8e,3) at open+0x36
> syscall(3b,3b,bfbf003b,806ea82,8075f14) at syscall+0x13b
> Xint0x80_syscall() at Xint0x80_syscall+0x1f
> --- syscall (5, FreeBSD ELF32, open), eip = 0x4834e417, esp =
> 0xbfbfdc2c, ebp = 
> 0xbfbfdc88 ---
>
> -- and here --

-- 
Bjoern A. Zeeb				bzeeb at Zabbadoz dot NeT