Kernel panic while importing a pool

[Jérôme Lebel]

Hi,

I had several kernel panics, and I finally understood that one of memory was bad. I removed it. But now, each time I try to import my pool, I get a kernel panic
I'm using freebsd 9.0-release generic

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address	= 0x468
fault code		= supervisor read data, page not present
instruction pointer	= 0x20:0xffffffff81473525
stack pointer	        = 0x28:0xffffff811c98e370
frame pointer	        = 0x28:0xffffff811c98e390
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 1592 (txg_thread_enter)
trap number		= 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
#0 0xffffffff808680fe at kdb_backtrace+0x5e
#1 0xffffffff80832cb7 at panic+0x187
#2 0xffffffff80b18400 at trap_fatal+0x290
#3 0xffffffff80b18749 at trap_pfault+0x1f9
#4 0xffffffff80b18c0f at trap+0x3df
#5 0xffffffff80b0313f at calltrap+0x8
#6 0xffffffff8147357e at bp_get_dsize_sync+0x3e
#7 0xffffffff8145e9b0 at dsl_scan_free_cb+0x120
#8 0xffffffff81430c74 at bpobj_iterate_impl+0xd4
#9 0xffffffff81430ebb at bpobj_iterate_impl+0x31b
#10 0xffffffff8145fbc3 at dsl_scan_sync+0x4c3
#11 0xffffffff814670e0 at spa_sync+0x390
#12 0xffffffff81477739 at txg_sync_thread+0x139
#13 0xffffffff8080682f at fork_exit+0x11f
#14 0xffffffff80b0366e at fork_trampoline+0xe



dmesg :
http://privatepaste.com/5c8c738627

What else can I add to help solving this bug?

I'm not very good with freebsd.

Thanks