On Mon, 31 Oct 2005, Holger Kiehl wrote:
> Hello
>
> Removing several dvb net interfaces as follows:
>
> /sbin/ifconfig dvb0_4 down
> /sbin/ifconfig dvb0_3 down
> /sbin/ifconfig dvb0_2 down
> /sbin/ifconfig dvb0_1 down
> /sbin/ifconfig dvb0_0 down
>
> Always produces an oops on a 64 bit system. On a 32 bit system this is no
> problem. Applying the attached patch makes it work on 64 bit systems.
>
After booting the system I still get the oops:
Oct 31 14:51:43 sojus kernel: dvb_demux_feed_del: feed not in list (type=1
state=0 pid=ffff)
Oct 31 14:51:43 sojus kernel: Unable to handle kernel paging request at
00000000000010f8 RIP:
Oct 31 14:51:43 sojus kernel: <ffffffff8028dde0>{dvb_net_filter_sec_set+48}
Oct 31 14:51:43 sojus kernel: PGD cce6a067 PUD 0
Oct 31 14:51:43 sojus kernel: Oops: 0000 [1] SMP
Oct 31 14:51:43 sojus kernel: CPU 1
Oct 31 14:51:43 sojus kernel: Modules linked in: drbd dummy w83627ehf i2c_isa
binfmt_misc video button ac uhci_hcd ehci_hcd b2c2_flexcop_pci b2c2_flexcop
mt352 bcm3510 stv0299 nxt2002 stv0297_cs2 lgdt330x mt312 i2c_core ide_cd cdrom
usbcore
Oct 31 14:51:43 sojus kernel: Pid: 7, comm: events/1 Not tainted 2.6.14 #6
Oct 31 14:51:43 sojus kernel: RIP: 0010:[<ffffffff8028dde0>]
<ffffffff8028dde0>{dvb_net_filter_sec_set+48}
Oct 31 14:51:43 sojus kernel: RSP: 0018:ffff8100cfe65dc8 EFLAGS: 00010282
Oct 31 14:51:43 sojus kernel: RAX: 0000000000000000 RBX: ffff8100ce935560 RCX:
ffffffff803c59c4
Oct 31 14:51:43 sojus kernel: RDX: ffff8100ce9351a8 RSI: ffff8100ce935560 RDI:
0000000000000000
Oct 31 14:51:43 sojus kernel: RBP: 0000000000000000 R08: ffff8100cef25140 R09:
ffffc20010081000
Oct 31 14:51:43 sojus kernel: R10: 0000000000000000 R11: 0000000000000000 R12:
ffff8100ce9351a8
Oct 31 14:51:43 sojus kernel: R13: ffffffff803c59c4 R14: ffff8100ce935000 R15:
ffffffff8028e5c4
Oct 31 14:51:43 sojus kernel: FS: 0000000000000000(0000)
GS:ffffffff80446880(0000) knlGS:0000000000000000
Oct 31 14:51:43 sojus kernel: CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Oct 31 14:51:43 sojus kernel: CR2: 00000000000010f8 CR3: 00000000cdef7000 CR4:
00000000000006e0
Oct 31 14:51:43 sojus kernel: Process events/1 (pid: 7, threadinfo
ffff8100cfe64000, task ffff8100cfe63500)
Oct 31 14:51:43 sojus kernel: Stack: ffff8100ce935558 ffff8100ce935480
ffff8100ce935480 0000000000000000
Oct 31 14:51:43 sojus kernel: ffff8100cef260f8 ffff8100ce935000
ffff8100ce9351a8 ffffffff8028e134
Oct 31 14:51:43 sojus kernel: 0000000000000001 ffffffff8028e515
Oct 31 14:51:43 sojus kernel: Call
Trace:<ffffffff8028e134>{dvb_net_feed_start+425}
<ffffffff8028e515>{dvb_net_feed_stop+347}
Oct 31 14:51:43 sojus kernel: <ffffffff80142d32>{worker_thread+475}
<ffffffff8012eec1>{default_wake_function+0}
Oct 31 14:51:43 sojus kernel: <ffffffff8012c4e4>{__wake_up_common+64}
<ffffffff80142b57>{worker_thread+0}
Oct 31 14:51:43 sojus kernel: <ffffffff80146d9f>{kthread+203}
<ffffffff8012f358>{schedule_tail+57}
Oct 31 14:51:43 sojus kernel: <ffffffff8010e806>{child_rip+8}
<ffffffff80146cd4>{kthread+0}
Oct 31 14:51:43 sojus kernel: <ffffffff8010e7fe>{child_rip+0}
Oct 31 14:51:43 sojus kernel:
Oct 31 14:51:43 sojus kernel: Code: ff 90 f8 10 00 00 89 c5 85 c0 79 16 4c 89
f6 48 c7 c7 67 56
Oct 31 14:51:43 sojus kernel: RIP <ffffffff8028dde0>{dvb_net_filter_sec_set+48}
RSP <ffff8100cfe65dc8>
Oct 31 14:51:43 sojus kernel: CR2: 00000000000010f8
Oct 31 14:51:43 sojus kernel: dvb0_4: no feed to stop
So the patch does not help. Without this patch the oops looks as follows:
Oct 31 12:00:03 sojus kernel: dvb0_4: no feed to stop
Oct 31 12:00:03 sojus kernel: dvb_net: removed network interface dvb0_4
Oct 31 12:00:05 sojus kernel: dvb0_3: no feed to stop
Oct 31 12:00:05 sojus kernel: dvb_net: removed network interface dvb0_3
Oct 31 12:00:07 sojus kernel: dvb0_2: no feed to stop
Oct 31 12:00:07 sojus kernel: dvb_net: removed network interface dvb0_2
Oct 31 12:00:09 sojus kernel: dvb0_1: no feed to stop
Oct 31 12:00:09 sojus kernel: dvb_net: removed network interface dvb0_1
Oct 31 12:00:12 sojus kernel: Unable to handle kernel paging request at
0000000000001134 RIP:
Oct 31 12:00:12 sojus kernel:
<ffffffff8028905c>{dvbdmx_release_section_feed+51}
Oct 31 12:00:12 sojus kernel: PGD cb24f067 PUD cea02067 PMD 0
Oct 31 12:00:12 sojus kernel: Oops: 0000 [1] SMP
Oct 31 12:00:12 sojus kernel: CPU 0
Oct 31 12:00:12 sojus kernel: Modules linked in: dummy w83627ehf i2c_isa
binfmt_misc video button ac uhci_hcd ehci_hcd b2c2_flexcop_pci b2c2_flexcop
mt352 bcm3510 stv0299 nxt2002 stv0297_cs2 lgdt330x mt312 i2c_core ide_cd cdrom
usbcore
Oct 31 12:00:12 sojus kernel: Pid: 2482, comm: ifconfig Not tainted 2.6.14 #4
Oct 31 12:00:12 sojus kernel: RIP: 0010:[<ffffffff8028905c>]
<ffffffff8028905c>{dvbdmx_release_section_feed+51}
Oct 31 12:00:12 sojus kernel: RSP: 0018:ffff8100cac1fd88 EFLAGS: 00010246
Oct 31 12:00:12 sojus kernel: RAX: 0000000000000000 RBX: ffff8100cebdc3a0 RCX:
ffff8100ce98a000
Oct 31 12:00:12 sojus kernel: RDX: 00000000fffffe00 RSI: 0000000000000000 RDI:
ffff8100cebdc3a0
Oct 31 12:00:12 sojus kernel: RBP: 0000000000000000 R08: ffff8100cac1e000 R09:
ffffffff8038d480
Oct 31 12:00:12 sojus kernel: R10: 0000000000000001 R11: ffffffff8806403e R12:
ffff8100cebdc0f8
Oct 31 12:00:12 sojus kernel: R13: 0000000000008914 R14: 00007fffffd292b0 R15:
ffff8100cfb53940
Oct 31 12:00:12 sojus kernel: FS: 00002aaaaaac03e0(0000)
GS:ffffffff80446800(0000) knlGS:0000000000000000
Oct 31 12:00:12 sojus kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Oct 31 12:00:12 sojus kernel: CR2: 0000000000001134 CR3: 00000000cb00a000 CR4:
00000000000006e0
Oct 31 12:00:12 sojus kernel: Process ifconfig (pid: 2482, threadinfo
ffff8100cac1e000, task ffff8100cea80380)
Oct 31 12:00:12 sojus kernel: Stack: ffff8100cb903488 ffff8100cb903480
0000000000000001 ffffffff8028e515
Oct 31 12:00:12 sojus kernel: ffff8100cb903000 00000000000010c2
0000000000001083 ffffffff802d6ed5
Oct 31 12:00:12 sojus kernel: ffff8100cb903000 ffffffff802d6cc0
Oct 31 12:00:12 sojus kernel: Call
Trace:<ffffffff8028e515>{dvb_net_feed_stop+347}
<ffffffff802d6ed5>{dev_close+92}
Oct 31 12:00:12 sojus kernel: <ffffffff802d6cc0>{dev_change_flags+99}
<ffffffff8030f11c>{devinet_ioctl+712}
Oct 31 12:00:12 sojus kernel: <ffffffff802cdf06>{sock_ioctl+574}
<ffffffff80182381>{do_ioctl+33}
Oct 31 12:00:12 sojus kernel: <ffffffff80182671>{vfs_ioctl+664}
<ffffffff8016f6f4>{get_unused_fd+234}
Oct 31 12:00:12 sojus kernel: <ffffffff801826c5>{sys_ioctl+59}
<ffffffff80170456>{do_sys_open+109}
Oct 31 12:00:12 sojus kernel: <ffffffff8010d97e>{system_call+126}
Oct 31 12:00:12 sojus kernel:
Oct 31 12:00:12 sojus kernel: Code: 8b 95 34 11 00 00 85 d2 75 16 f0 41 ff 84
24 a8 02 00 00 0f
Oct 31 12:00:12 sojus kernel: RIP
<ffffffff8028905c>{dvbdmx_release_section_feed+51} RSP <ffff8100cac1fd88>
Oct 31 12:00:12 sojus kernel: CR2: 0000000000001134
Oct 31 12:00:12 sojus kernel: dvb0_0: no feed to stop
Holger (Kiehl)
