Date: Mon, 23 Jun 2014 08:57:39 -0500 From: Eric van Gyzen <eric@vangyzen.net> To: <current@FreeBSD.org> Subject: Re: ahci panics when detaching... Message-ID: <53A83253.1090303@vangyzen.net> In-Reply-To: <20140623134407.GD31367@funkthat.com> References: <20140623134407.GD31367@funkthat.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 06/23/2014 08:44, John-Mark Gurney wrote:
> So, when I try to eject a ESATA card, the machine panics... I am able
> to successfully eject other cards, an ethernet (re) and a serial card
> (uart), and both handle the removal of their device w/o issue and with
> out crashes...
>
> When I try w/ ahci, I get a panic... The panic backtrace is:
> #8 0xffffffff80ced4e2 in calltrap () at ../../../amd64/amd64/exception.S:231
> #9 0xffffffff8093d037 in rman_get_rid (r=0xfffff800064c9380)
> at ../../../kern/subr_rman.c:979
> #10 0xffffffff8092b888 in resource_list_release_active (rl=0xfffff80006d39c08,
> bus=0xfffff80002cd9000, child=0xfffff80006b6d700, type=3)
> at ../../../kern/subr_bus.c:3419
> #11 0xffffffff8065d7a1 in pci_child_detached (dev=0xfffff80002cd9000,
> child=0xfffff80006b6d700) at ../../../dev/pci/pci.c:4133
> ---Type <return> to continue, or q <return> to quit---
> #12 0xffffffff80929708 in device_detach (dev=0xfffff80006b6d700)
> at bus_if.h:181
> #13 0xffffffff8065f9f7 in pci_delete_child (dev=0xfffff80002cd9000,
> child=0xfffff80006b6d700) at ../../../dev/pci/pci.c:4710
>
> In frame 9:
> (kgdb) fr 9
> #9 0xffffffff8093d037 in rman_get_rid (r=0xfffff800064c9380)
> at ../../../kern/subr_rman.c:979
> 979 return (r->__r_i->r_rid);
> (kgdb) print r
> $1 = (struct resource *) 0xfffff800064c9380
> (kgdb) print/x *r
> $4 = {__r_i = 0xdeadc0dedeadc0de, r_bustag = 0xdeadc0dedeadc0de,
> r_bushandle = 0xdeadc0dedeadc0de}
>
> So, looks like something is corrupted the resource data...
The resource data has been freed.
> Attach dmesg:
> atapci0: <JMicron JMB363 UDMA133 controller> at device 0.0 on pci2
> ahci1: <JMicron JMB363 AHCI SATA controller> at channel -1 on atapci0
> ahci1: AHCI v1.00 with 2 3Gbps ports, Port Multiplier supported
> ahci1: quirks=0x1<NOFORCE>
> ahcich6: <AHCI channel> at channel 0 on ahci1
> ahcich7: <AHCI channel> at channel 1 on ahci1
> ata2: <ATA channel> at channel 0 on atapci0
> [eject card]
> ahcich6: stopping AHCI engine failed
> ahcich6: stopping AHCI FR engine failed
> ahcich6: detached
> ahcich7: stopping AHCI engine failed
> ahcich7: stopping AHCI FR engine failed
> ahcich7: detached
> ahci1: detached
> ata2: detached
> atapci0: detached
>
>
> Fatal trap 9: general protection fault while in kernel mode
>
> Also, has anyone thought about adding a case in your trap
> handler that when we hit the deadc0de address, to print up a
> special message or something? At least flag it, or do we not get
> the faulting address?
>
> This is HEAD as of r266429.
>
> Let me know if there is anything else you need to know.
The full stack trace might be useful.
Eric
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?53A83253.1090303>