myheadblewoff at hotmail
Jun 26, 2008, 5:32 PM
Post #1 of 1
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weirdness with kernel 'RT' patch?
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G'day folks,
I recently patched kernel with RT stuffs (nothing to do with mythtv but with me & MIDI ),
and I've noticed things with mythtv (0.21 release) are a bit 'weird'...ie; it seems to be a
bit slow doing things versus before the RT patch-work.
Anyhow, checking through dmesg this morning I noticed ;
BUG: mythbackend:21758 RT task yield()-ing!
Pid: 21758, comm: mythbackend Tainted: P 2.6.25.4-rt3 #2
Call Trace:
[<ffffffff80351687>] __delay+0x27/0x70
[<ffffffff804d421d>] yield+0x4d/0x50
[<ffffffff8808f858>] :i2c_algo_bit:try_address+0x48/0x90
[<ffffffff8808f918>] :i2c_algo_bit:bit_doAddress+0x78/0x1e0
[<ffffffff8808faf3>] :i2c_algo_bit:bit_xfer+0x73/0xf0
[<ffffffff8806c434>] :i2c_core:i2c_transfer+0x74/0xb0
[<ffffffff881091c3>] :mt352:mt352_read_register+0x63/0xa0
[<ffffffff881092c8>] :mt352:mt352_read_signal_strength+0x38/0x60
[<ffffffff880f22fe>] :dvb_core:dvb_frontend_ioctl+0x10e/0x8d0
[<ffffffff80229b26>] enqueue_task+0x26/0x70
[<ffffffff803509a6>] vsnprintf+0x2d6/0x690
[<ffffffff80273508>] get_zone_pcp+0x38/0x60
[<ffffffff80229144>] target_load+0x34/0x70
[<ffffffff8022929d>] wake_affine+0xbd/0x100
[<ffffffff80252926>] getnstimeofday+0x36/0x90
[<ffffffff80252926>] getnstimeofday+0x36/0x90
[<ffffffff880f21f0>] :dvb_core:dvb_frontend_ioctl+0x0/0x8d0
[<ffffffff880ea1ff>] :dvb_core:dvb_usercopy+0x7f/0x1a0
[<ffffffff80230138>] hrtick_set+0x78/0x140
[<ffffffff8025c38d>] rt_down+0x1d/0x60
[<ffffffff802a59ed>] vfs_ioctl+0x7d/0xa0
[<ffffffff802a5b71>] do_vfs_ioctl+0x51/0x130
[<ffffffff802a5c99>] sys_ioctl+0x49/0x80
[<ffffffff8020b3ac>] ret_from_fork+0xc/0x25
[<ffffffff8020b4cb>] system_call_after_swapgs+0x7b/0x80
mythfilldatabas[23197]: segfault at 696640 ip 696640 sp 40871578 error 15
Note that I'm just reporting this artifact as a matter of course - I don't consider it
a 'real' problem.....everything kept going after the oops.
Regards,
Don
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