[linux-dvb] "Kernel BUG" (Hauppauge Nova-T 500 Dual DVB-T)

[tim at electronghost.co.uk]

Searching the list shows a few instances of these, but not much further
discussion so I'm not sure what the status is. In case it turns out to be
useful, here's a trace from my mythbackend box. This has an x86_64 kernel.
I *think* everythnig relevant should be in the backtrace already.

Aug  6 20:49:57 moominvalley kernel: list_del corruption. prev->next
should be ffff81007bca9c00, but was 0000000000000001
Aug  6 20:49:57 moominvalley kernel: ------------[ cut here ]------------
Aug  6 20:49:57 moominvalley kernel: kernel BUG at lib/list_debug.c:67!
Aug  6 20:49:57 moominvalley kernel: invalid opcode: 0000 [2] SMP
Aug  6 20:49:57 moominvalley kernel: last sysfs file:
/class/usb_device/usbdev11.4/dev
Aug  6 20:49:57 moominvalley kernel: CPU 1
Aug  6 20:49:57 moominvalley kernel: Modules linked in: iptable_filter
ip_tables nfsd exportfs nfs_acl autofs4 lockd sunrpc ipv6
nf_conntrack_netbios_ns nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink
xt_tcpudp ipt_REJECT x_tables cpufreq_ondemand acpi_cpufreq dm_multipath
video sbs button dock battery ac lp loop mt2060 dvb_usb_dib0700 dib7000m
dib7000p dvb_usb dvb_core dvb_pll dib3000mc dibx000_common r8169
parport_pc parport i2c_i801 rtc_cmos i2c_core serio_raw shpchp sg
dm_snapshot dm_zero dm_mirror dm_mod ahci pata_jmicron ata_piix
ata_generic libata sd_mod scsi_mod raid456 xor raid1 ext3 jbd mbcache
ehci_hcd ohci_hcd uhci_hcd
Aug  6 20:49:57 moominvalley kernel: Pid: 8393, comm: mythbackend Not
tainted 2.6.22.1-41.fc7 #1
Aug  6 20:49:57 moominvalley kernel: RIP: 0010:[<ffffffff81118f19>] 
[<ffffffff81118f19>] list_del+0x21/0x5b
Aug  6 20:49:57 moominvalley kernel: RSP: 0018:ffff81007bca9bd8  EFLAGS:
00010086
Aug  6 20:49:57 moominvalley kernel: RAX: 0000000000000058 RBX:
ffff8100623e51c0 RCX: ffffffff8136c308
Aug  6 20:49:57 moominvalley kernel: RDX: 0000000100000000 RSI:
0000000000000096 RDI: 0000000000000000
Aug  6 20:49:57 moominvalley kernel: RBP: ffff8100623e51b8 R08:
ffffffff8136c308 R09: 0000000000000000
Aug  6 20:49:57 moominvalley kernel: R10: 0000000000000046 R11:
ffffffff813ad000 R12: 0000000000000292
Aug  6 20:49:57 moominvalley kernel: R13: ffff81007557a800 R14:
00000000fffffffc R15: ffff8100604383c0
Aug  6 20:49:57 moominvalley kernel: FS:  0000000041e02950(0063)
GS:ffff810002397280(0000) knlGS:0000000000000000
Aug  6 20:49:57 moominvalley kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
000000008005003b
Aug  6 20:49:57 moominvalley kernel: CR2: 00000000008fe008 CR3:
000000006c992000 CR4: 00000000000006e0
Aug  6 20:49:57 moominvalley kernel: Process mythbackend (pid: 8393,
threadinfo ffff81007bca8000, task ffff81007557a800)
Aug  6 20:49:57 moominvalley kernel: Stack:  0000000000000292
ffffffff81248c40 0000000000000001 ffff81007557a800
Aug  6 20:49:57 moominvalley kernel:  ffffffff8102cc11 ffff8100623e51c8
ffff8100623e51c8 ffffffff81247597
Aug  6 20:49:57 moominvalley kernel:  ffff8100623e51b8 0000000080a86f3d
00000000ffffffed ffff810065cb2800
Aug  6 20:49:57 moominvalley kernel: Call Trace:
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff81248c40>]
__down_interruptible+0xe2/0x112
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8102cc11>]
default_wake_function+0x0/0xe
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff81247597>]
wait_for_completion+0xa0/0xb3
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff81248a2b>]
__down_failed_interruptible+0x35/0x3a
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8819f3c9>]
:dvb_core:dvb_frontend_ioctl+0xc1/0x8a6
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8102ac04>]
enqueue_entity+0x21b/0x242
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8102a32f>]
enqueue_task+0x43/0x56
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8102a9be>]
activate_task+0x66/0x82
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8102af30>]
__check_preempt_curr_fair+0x1d/0x38
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8102cbff>]
try_to_wake_up+0x353/0x365
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff88199129>]
:dvb_core:dvb_usercopy+0xc1/0x11c
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8819f308>]
:dvb_core:dvb_frontend_ioctl+0x0/0x8a6
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff81095adb>]
chrdev_open+0x155/0x184
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff81095986>]
chrdev_open+0x0/0x184
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff810919c7>]
__dentry_open+0x101/0x1aa
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff88199184>]
:dvb_core:dvb_generic_ioctl+0x0/0x22
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8109e879>] do_ioctl+0x9d/0xb6
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8109ead5>]
vfs_ioctl+0x243/0x25c
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff8109eb47>]
sys_ioctl+0x59/0x7a
Aug  6 20:49:57 moominvalley kernel:  [<ffffffff81009b5e>]
system_call+0x7e/0x83
Aug  6 20:49:57 moominvalley kernel:
Aug  6 20:49:57 moominvalley kernel:
Aug  6 20:49:57 moominvalley kernel: Code: 0f 0b eb fe 48 8b 07 48 8b 50
08 48 39 fa 74 12 48 c7 c7 91
Aug  6 20:49:57 moominvalley kernel: RIP  [<ffffffff81118f19>]
list_del+0x21/0x5b
Aug  6 20:49:57 moominvalley kernel:  RSP <ffff81007bca9bd8>


-- 
Tim Smith <tim at electronghost.co.uk>