Hi List,

Moving from VDR 1.6 to 2.06 for HD (DVB-T2) and seeing regular kernel oops with the PCTV nanostick 290e when using DVB-T2. Unfortunately this seems to kill the receiver until a reboot. It happens while the system is idle.

I wondered if anyone else has a similar experience, or is this a test-machine/configuration specific problem? The kernel is 3.0.76 (SLES 11 SP3) The oops always seems to happen after this log entry with the same diagnostics - below "ERROR: can't set filter (pid=18, tid=40, mask=C0): Cannot allocate memory"

If using an identical configuration to my current 1.6 but without the HD stick I don't see the problem. I tried a couple of the latest kernel versions in the same series 3.0.101.. with the same result.

I might see if I can build suitable later kernels too, not sure if that's helpful - does anyone know or confirm reliable operation on a alter kernel ?

Is there a vdr, kernel or other tweak I need ?

Oct 31 17:15:52 ha-server vdr: [5639] ERROR: can't set filter (pid=18, tid=40, mask=C0): Cannot allocate memory Oct 31 17:15:52 ha-server kernel: [20717.748177] The following is only an harmless informational message. Oct 31 17:15:52 ha-server kernel: [20717.748182] Unless you get a _continuous_flood_ of these messages it means Oct 31 17:15:52 ha-server kernel: [20717.748184] everything is working fine. Allocations from irqs cannot be Oct 31 17:15:52 ha-server kernel: [20717.748186] perfectly reliable and the kernel is designed to handle that. Oct 31 17:15:52 ha-server kernel: [20717.748190] section handler: page allocation failure: order:4, mode:0x80d4 Oct 31 17:15:52 ha-server kernel: [20717.748195] Pid: 5639, comm: section handler Tainted: GF U N 3.0.76-0.11-default-rf #1 Oct 31 17:15:52 ha-server kernel: [20717.748198] Call Trace: Oct 31 17:15:52 ha-server kernel: [20717.748214] [<ffffffff81004925>] dump_trace+0x75/0x310 Oct 31 17:15:52 ha-server kernel: [20717.748222] [<ffffffff8145411a>] dump_stack+0x69/0x6f Oct 31 17:15:52 ha-server kernel: [20717.748228] [<ffffffff810fe082>] warn_alloc_failed+0x102/0x1a0 Oct 31 17:15:52 ha-server kernel: [20717.748234] [<ffffffff810ffb61>] __alloc_pages_slowpath+0x541/0x7d0 Oct 31 17:15:52 ha-server kernel: [20717.748239] [<ffffffff810fffd9>] __alloc_pages_nodemask+0x1e9/0x200 Oct 31 17:15:52 ha-server kernel: [20717.748245] [<ffffffff81007255>] dma_generic_alloc_coherent+0xa5/0x160 Oct 31 17:15:52 ha-server kernel: [20717.748283] [<ffffffffa065adec>] em28xx_init_isoc+0x13c/0x3a0 [em28xx] Oct 31 17:15:52 ha-server kernel: [20717.748312] [<ffffffffa0598230>] start_feed+0xc0/0xd0 [em28xx_dvb] Oct 31 17:15:52 ha-server kernel: [20717.748328] [<ffffffffa0749f1f>] dmx_section_feed_start_filtering+0xdf/0x180 [dvb_core] Oct 31 17:15:52 ha-server kernel: [20717.748341] [<ffffffffa07483d0>] dvb_dmxdev_filter_start+0x210/0x3f0 [dvb_core] Oct 31 17:15:52 ha-server kernel: [20717.748353] [<ffffffffa074894b>] dvb_demux_do_ioctl+0x22b/0x530 [dvb_core] Oct 31 17:15:52 ha-server kernel: [20717.748364] [<ffffffffa0746240>] dvb_usercopy+0xb0/0x190 [dvb_core] Oct 31 17:15:52 ha-server kernel: [20717.748374] [<ffffffffa0747230>] dvb_demux_ioctl+0x10/0x20 [dvb_core] Oct 31 17:15:52 ha-server kernel: [20717.748381] [<ffffffff811666eb>] do_vfs_ioctl+0x8b/0x3b0 Oct 31 17:15:52 ha-server kernel: [20717.748387] [<ffffffff81166ab1>] sys_ioctl+0xa1/0xb0 Oct 31 17:15:52 ha-server kernel: [20717.748393] [<ffffffff8145ed12>] system_call_fastpath+0x16/0x1b Oct 31 17:15:52 ha-server kernel: [20717.748418] [<00007fd5116a70a7>] 0x7fd5116a70a6 Oct 31 17:15:52 ha-server kernel: [20717.748420] Mem-Info: Oct 31 17:15:52 ha-server kernel: [20717.748423] Node 0 DMA per-cpu: Oct 31 17:15:52 ha-server kernel: [20717.748426] CPU 0: hi: 0, btch: 1 usd: 0 Oct 31 17:15:52 ha-server kernel: [20717.748428] CPU 1: hi: 0, btch: 1 usd: 0 Oct 31 17:15:52 ha-server kernel: [20717.748430] Node 0 DMA32 per-cpu: Oct 31 17:15:52 ha-server kernel: [20717.748433] CPU 0: hi: 186, btch: 31 usd: 0 Oct 31 17:15:52 ha-server kernel: [20717.748436] CPU 1: hi: 186, btch: 31 usd: 72 Oct 31 17:15:52 ha-server kernel: [20717.748441] active_anon:190778 inactive_anon:87398 isolated_anon:0 Oct 31 17:15:52 ha-server kernel: [20717.748442] active_file:60518 inactive_file:60567 isolated_file:0 Oct 31 17:15:52 ha-server kernel: [20717.748444] unevictable:34 dirty:5497 writeback:0 unstable:0 Oct 31 17:15:52 ha-server kernel: [20717.748445] free:19433 slab_reclaimable:49608 slab_unreclaimable:12278 Oct 31 17:15:52 ha-server kernel: [20717.748446] mapped:32492 shmem:2489 pagetables:11435 bounce:0 Oct 31 17:15:52 ha-server kernel: [20717.748448] Node 0 DMA free:8372kB min:340kB low:424kB high:508kB active_anon:8kB inactive_anon:4092kB active_file:720kB inactive_file:864kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15688kB mlocked:0kB dirty:0kB writeback:0kB mapped:464kB shmem:0kB slab_reclaimable:440kB slab_unreclaimable:120kB kernel_stack:80kB pagetables:12kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Oct 31 17:15:52 ha-server kernel: [20717.748461] lowmem_reserve[]: 0 1995 1995 1995 Oct 31 17:15:52 ha-server kernel: [20717.748465] Node 0 DMA32 free:69360kB min:44712kB low:55888kB high:67068kB active_anon:763104kB inactive_anon:345500kB active_file:241352kB inactive_file:241404kB unevictable:136kB isolated(anon):0kB isolated(file):0kB present:2043100kB mlocked:136kB dirty:21988kB writeback:0kB mapped:129504kB shmem:9956kB slab_reclaimable:197992kB slab_unreclaimable:48992kB kernel_stack:3992kB pagetables:45728kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no Oct 31 17:15:52 ha-server kernel: [20717.748478] lowmem_reserve[]: 0 0 0 0 Oct 31 17:15:52 ha-server kernel: [20717.748482] Node 0 DMA: 30*4kB 21*8kB 10*16kB 7*32kB 9*64kB 2*128kB 3*256kB 4*512kB 2*1024kB 1*2048kB 0*4096kB = 8416kB Oct 31 17:15:52 ha-server kernel: [20717.748493] Node 0 DMA32: 1848*4kB 5184*8kB 929*16kB 112*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 0*4096kB = 69360kB Oct 31 17:15:52 ha-server kernel: [20717.748503] 123706 total pagecache pages Oct 31 17:15:52 ha-server kernel: [20717.748505] 92 pages in swap cache Oct 31 17:15:52 ha-server kernel: [20717.748507] Swap cache stats: add 761, delete 669, find 0/0 Oct 31 17:15:52 ha-server kernel: [20717.748509] Free swap = 7274364kB Oct 31 17:15:52 ha-server kernel: [20717.748511] Total swap = 7277408kB Oct 31 17:15:52 ha-server kernel: [20717.757666] 521936 pages RAM Oct 31 17:15:52 ha-server kernel: [20717.757670] 10501 pages reserved Oct 31 17:15:52 ha-server kernel: [20717.757671] 484237 pages shared Oct 31 17:15:52 ha-server kernel: [20717.757673] 373339 pages non-shared Oct 31 17:15:52 ha-server kernel: [20717.757677] unable to allocate 48128 bytes for transfer buffer 1

Thanks!