Re: Kernel panic during portupdrade [ffs_blkfree: freeing free block]

David Leimbach wrote:
> Second time this has happened... I figured out a serial console from my 
> PC to
> my mac and have a real cut n paste of the panic:
> 
> db> tr
> Debugger(c050a8c7,1000000,c051ba51,e0b54b48,1) at Debugger+0x55
> panic(c051ba51,c62a0c90,6ab668,0,c620b8d4) at panic+0x11f
> ffs_blkfree(c620b800,c6439000,6ab668,0,4000) at ffs_blkfree+0x4da
> handle_workitem_freeblocks(c8ea4a00,0,2,c05b0e08,c6419200) at 
> handle_workitem_fr
> eeblocks+0x31a
> process_worklist_item(0,0,3eac2c5a,0,b8) at process_worklist_item+0x20a
> softdep_process_worklist(0,0,c0511a49,6d7,0) at 
> softdep_process_worklist+0xc0
> sched_sync(0,e0b54d48,c0508609,313,0) at sched_sync+0x2ee
> fork_exit(c036f370,0,e0b54d48) at fork_exit+0xc0
> fork_trampoline() at fork_trampoline+0x1a
> 
> Dave
> On Sunday, April 27, 2003, at 10:08 AM, David Leimbach wrote:
> 
>> dev = ad1s1a, block = 5271424, fs = /
>> panic: ffs_blkfree: freeing free block
>> cpuid = 0; lapic.id = 01000000
>> Debugger("panic")
>> Stopped at        Debugger+0x55: xchgl   %ebx,in_Debugger.0
>> db> tr
>> Debugger(c050a8c7,10000000,c051ba51ce0b54acc,1) at Debugger+0x55
>> panic(c051ba51,c640ed90,506f80,0,c620b8d4) at panic+0x11f
>> ffs_blkfree(c620b800,c6421000,506f80,0,4000) at ffs_blkfree+0x4da
>> indir_trunc(c6a74900,1418ca0,0,0,c) at indir_trunc+0x32f
>> handle_workitem_freeblocks(c6a7f900,0,2,c05b0e08,c6411800) at 
>> handle_workitem_freeblocks+0x225
>> process_worklist_item(0,0,3eabf009,0,b8) at process_worklist_item+0x20a
>> softdep_process_worklist(0,0,c0511a49,6d7,0) at 
>> softdep_process_worklist+0xc0
>> sched_ync(0,e0b54d48,c0508609,313c0) at sched_sync+0x2ee
>> fork_exit(c036f370,0,e0b54d48) at fork_exit+0xc0
>> fork_trampoline() at fork_trampoline+0x1a
>> ---  trap 0x1, eip = 0, esp = 0xe0b54d7c, ebp = 0 ---
>>
>> [could be some errors due to me transcribing this manually from my 
>> other monitor]
>>

I also got this panic several times in the last hour while compiling 
some ports. I cvsuped sources about 10hours ago and buid a new kernel. 
Yesterday i was able to build world an mozilla without any problems.

I don't have debugging on at the moment. I'll try building an new kernel 
with debugging on. I don't have any experience with debugging. Will an 
additional traceback show any additional usefull information?

regards,
flo