Re: MIPS kernel snapshots - 2.6.25-rc6

[Giuseppe Sacco <giuseppe@eppesuigoccas.homedns.org>]

Hi all,

On Tue, 18 Mar 2008 13:45:00 +0100 Giuseppe Sacco <giuseppe@eppesuigoccas.homedns.org> wrote:
> On Mon, Mar 17, 2008 at 04:57:30PM +0100, Martin Michlmayr wrote:
> > I've built some kernel snapshots for mips and mipsel based on
> > 2.6.25-rc6.  Please test them on your favourite MIPS machine
> > and report success or failures to this list.
[...]
> Hi Martin,
> I have rebuilt -rc6 on a mips machine and I am using it on SGI O2.
> Currently I only found the same Oops as -rc5.
> 
> I will investigate about the usb problem that was still present on 2.6.24.

So, the new kernel seems very good: it boot, hardware is correctly recognized, even USB devices are working (this is something new compared to previous kernels; but still lsusb does not list all attached devices).
The kernel oops when accessing cdrom from hald is still there, moreover it is not possible to mount a cdrom:

giuseppe@sgi:~$ sudo mount -t iso9660 /dev/cdrom /mnt
Password:
Segmentation fault
giuseppe@sgi:~$ dmesg | tail -61
Oops[#2]:
Cpu 0
$ 0   : 0000000000000000 ffffffffb001fce0 ffffffffffffff86 0000000000000074
$ 4   : 9800000057c01140 0000000000000080 0000000000024000 0000000000000000
$ 8   : 9800000057c8cd18 0000000000000001 0000000000008000 404000020a0808ff
$12   : 0000000000000008 ffffffff801b8db8 0000000000000000 ffffffff803f0000
$16   : 980000000dce77f0 980000000dce77e8 980000000dce7850 0000000000000000
$20   : ffffffff8041bce8 980000000dce7860 ffffffff80490000 980000000dce7aa0
$24   : 0000000000000000 ffffffff80074290                                  
$28   : 980000000dce4000 980000000dce77d0 9800000057902140 980000000dce7aa0
Hi    : 0000000000000000
Lo    : 003d271fbd046000
epc   : 980000000dce7ab8 0x980000000dce7ab8     Tainted: G      D 
ra    : 980000000dce7aa0 0x980000000dce7aa0
Status: b001fce3    KX SX UX KERNEL EXL IE 
Cause : 00000008
BadVA : 0000000000000000
PrId  : 00002321 (R5000)
Modules linked in: isofs nls_iso8859_1 nls_cp437 vfat fat usb_storage iptable_filter ipt_MASQUERADE xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables xfrm4_tunnel tunnel4 ipcomp esp4 aead ah4 parport_pc lp parport ipv6 deflate zlib_deflate ctr twofish twofish_common camellia serpent blowfish des_generic cbc aes_generic xcbc sha256_generic sha1_generic crypto_null crypto_blkcipher dm_snapshot dm_mirror dm_mod ehci_hcd ohci_hcd r8169 usbcore sg evdev
Process mount (pid: 5411, threadinfo=980000000dce4000, task=9800000055d870f8)
Stack : 9800000057902140 ffffffff802461dc ffffffff80490000 980000000dce7aa0
        9800000057902140 ffffffff80244ce4 00000018ffffff86 0000000000000000
        0200000000000001 000006d600000000 0000000000000000 980000000dce7860
        980000000dce78c0 9800000057e2b610 0000000000000000 ffffffff8024cc44
        0000000000000020 ffffffff8046f8e8 0000000000000000 0000000000000000
        0000000000000000 0000000000000000 0000000000000000 9800000057810110
        9800000057820130 ffffffff800c9068 9800000057fcc06c 0000000000000000
        980000000dce7bb0 980000000dce7930 4600002800000000 1000000000000000
        980000000dce7860 00000010ffffff86 0000000000000000 0200000000000001
        000006d600000000 0000000000000000 9800000057f52d80 0000000000000000
        ...
Call Trace:
[<ffffffff802461dc>] sr_do_ioctl+0x84/0x290
[<ffffffff80244ce4>] sr_test_unit_ready+0x74/0x128
[<ffffffff8024cc44>] cdrom_open+0x32c/0xc38
[<ffffffff800c9068>] __find_get_block+0x290/0x2a8
[<ffffffff800aa64c>] __link_path_walk+0x8bc/0xf78
[<ffffffff800aae44>] link_path_walk+0x13c/0x290
[<ffffffffc0264898>] isofs_fill_super+0x0/0xd8 [isofs]
[<ffffffff800d1b5c>] __blkdev_get+0x74/0x98
[<ffffffff800d1ff8>] open_bdev_excl+0x48/0xc8
[<ffffffff800a1574>] get_sb_bdev+0x44/0x288
[<ffffffff800a1264>] vfs_kern_mount+0x84/0x210
[<ffffffff800a144c>] do_kern_mount+0x4c/0x130
[<ffffffff800a1430>] do_kern_mount+0x30/0x130
[<ffffffff800bbfac>] do_new_mount+0xac/0xf0
[<ffffffff800bc1dc>] do_mount+0x1ec/0x240
[<ffffffff80078124>] __alloc_pages+0x7c/0x3e0
[<ffffffff800784cc>] __get_free_pages+0x44/0xa8
[<ffffffff800ddf58>] compat_sys_mount+0xa0/0x270
[<ffffffff80019154>] handle_sys+0x114/0x130
[<ffffffff800a2d10>] sys_newstat+0x0/0x48
[<ffffffff8001fcf3>] fpu_emulator_cop1Handler+0x362/0x2270


Code: 00000000  00000000  00000000 <98000000> 0dce7b50  00000000  00000000  00000000  00000000