Re: acquiring duplicate lock of same type: "ftlk"

2009/8/27 pluknet <pluknet_at_gmail.com>:
> Hi.
>
> Got it on FreeBSD 9.0-CURRENT while been running in Xorg, don't know
> where exactly.
>
> Acquiring duplicate lock of same type: "ftlk"
>  1st ftlk _at_ /usr/src/sys/modules/linux/../../compat/linux/linux_futex.c:177
>  2nd ftlk _at_ /usr/src/sys/modules/linux/../../compat/linux/linux_futex.c:203
> KDB: stack backtrace:
> db_trace_self_wrapper(c07fd8ea,ea393b58,c060a145,c05fac1b,c08007b2,...)
> at db_trace_self_wrapper+0x26
> kdb_backtrace(c05fac1b,c08007b2,c0b49757,c58ead20,ea393bb4,...) at
> kdb_backtrace+0x29
> _witness_debugger(c08007b2,c0b49793,c0b49757,cb,0,...) at _witness_debugger+0x25
> witness_checkorder(c9bba780,9,c0b49757,cb,0,...) at witness_checkorder+0x469
> _sx_xlock(c9bba780,0,c0b49757,cb,0,...) at _sx_xlock+0x85
> futex_get0(c0609f8c,c09cc7a8,c9ac7764,c09cc7a8,c084df3c,...) at futex_get0+0x116
> linux_sys_futex(c9ac76c0,ea393cf8,ea393d18,ea393d1c,c0b4cf40,...) at
> linux_sys_futex+0x6f
> syscall(ea393d38) at syscall+0x2b4
> Xint0x80_syscall() at Xint0x80_syscall+0x20
> --- syscall (240, Linux ELF, linux_sys_futex), eip = 0x28799533, esp =
> 0xbfbfc0cc, ebp = 0x4000001 ---
>
>

This time seeing this LOR again but with another one just before.
lock order reversal:
 1st 0xc75365b8 pseudofs (pseudofs) _at_ /usr/src/sys/kern/vfs_lookup.c:497
 2nd 0xc088ea3c allproc (allproc) _at_ /usr/src/sys/kern/kern_proc.c:292
KDB: stack backtrace:
db_trace_self_wrapper(c07fd8ea,e82148e4,c060a145,c05fac1b,c08008bf,...)
at db_trace_self_wrapper+0x26
kdb_backtrace(c05fac1b,c08008bf,c58eabe8,c58e30d0,e8214940,...) at
kdb_backtrace+0x29
_witness_debugger(c08008bf,c088ea3c,c07f981d,c58e30d0,c07f96f0,...) at
_witness_debugger+0x25
witness_checkorder(c088ea3c,1,c07f96f0,124,0,...) at witness_checkorder+0x839
_sx_slock(c088ea3c,0,c07f96f0,124,c73c4980,...) at _sx_slock+0x85
pfind(514,c72ba1a0,4,c07f8d78,c5fe1b40,...) at pfind+0x2f
pfs_visible(0,0,c07f042d,7c,c7536560,...) at pfs_visible+0x3a
pfs_lookup(e8214a40,c082715e,c7536560,c7536560,e8214bf8,...) at pfs_lookup+0x3dd
VOP_CACHEDLOOKUP_APV(c0843960,e8214a40,e8214bf8,e8214be4,c73c4e80,...)
at VOP_CACHEDLOOKUP_APV+0xc5
vfs_cache_lookup(e8214acc,c08087d0,c0875a00,200000,e8214bcc,...) at
vfs_cache_lookup+0xd6
VOP_LOOKUP_APV(c0843960,e8214acc,e8214bf8,1f1,e8214be4,...) at
VOP_LOOKUP_APV+0xe5
lookup(e8214bcc,c5fd1800,0,c5,c5ef77f8,...) at lookup+0x63b
namei(e8214bcc,c5c1500d,3f3,e8214c20,c5c1500d,...) at namei+0x57f
kern_alternate_path(c5fe1b40,c0b4921c,2879f478,0,e8214c74,...) at kern_alternate
_path+0x1cd
linux_emul_convpath(c5fe1b40,2879f478,0,e8214c74,0,...) at
linux_emul_convpath+0x3c
linux_open(c5fe1b40,e8214cf8,e8214d18,e8214d1c,c0b4b58c,...) at linux_open+0x41
syscall(e8214d38) at syscall+0x2b4
Xint0x80_syscall() at Xint0x80_syscall+0x20
--- syscall (5, Linux ELF, linux_open), eip = 0x2889115e, esp =
0xbfbfbd1c, ebp = 0xbfbfbd6c ---
acquiring duplicate lock of same type: "ftlk"
[...]

I'm running head from 08/26.
There were recent changes in pseudofs. Could it be fixed?
Looks like it's connected to running firefox3 with linprocfs (for adobe flash).

-- 
wbr,
pluknet