Date: Sun, 18 May 2014 22:52:08 +0200 From: Hans Petter Selasky <hps@selasky.org> To: John Baldwin <jhb@FreeBSD.org>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: panic: resource_list_add: resource entry is busy Message-ID: <53791D78.3070305@selasky.org> In-Reply-To: <5377529C.3000508@FreeBSD.org> References: <53763B0F.4040003@selasky.org> <5377529C.3000508@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 05/17/14 14:14, John Baldwin wrote: > On 5/16/14, 12:21 PM, Hans Petter Selasky wrote: >> Hi, >> >> I see the following panic: >> >> panic: resource_list_add: resource entry is busy >> >> When trying to kldload an older pccard driver. The call comes from the >> driver_added bus method somewhere down the tree. Loading the module >> before the kernel boots fixes the problem temporarily. >> >> Any bells ringing or patch suggestions? >> >> Seeing this on 9-stable, also believed that the same issue exists with >> 10-current. > > Something is doing a duplicate resource_list_add() for the same RID. > The trace will tell you where the second resource_list_add() is > occurring. Some tracing should let you see where the first one occurs. > Hi, Here is the backtrace. Is this information sufficient to debug further: KDB: stack backtrace: #0 0xffffffff8089e5d6 at kdb_backtrace+0x66 #1 0xffffffff808960f7 at resource_list_add+0x57 #2 0xffffffff805ea939 at pccard_function_init+0x279 #3 0xffffffff805ebede at pccard_probe_and_attach_child+0x7e #4 0xffffffff805ec6ce at pccard_driver_added+0x5e #5 0xffffffff808951b5 at devclass_driver_added+0x75 #6 0xffffffff80895cf3 at devclass_add_driver+0x103 #7 0xffffffff8084f1e8 at module_register_init+0xa8 #8 0xffffffff80846cde at linker_load_module+0x85e #9 0xffffffff808473f4 at kern_kldload+0xb4 #10 0xffffffff80847504 at sys_kldload+0x84 #11 0xffffffff80c4a48a at amd64_syscall+0x5ea #12 0xffffffff80c34b27 at Xfast_syscall+0xf7 --HPS
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?53791D78.3070305>