On Fri, Aug 05, 2005 at 08:52:41PM +0200 Michael Stenzel wrote:
> Hello dear Kernel People,
>
> I have a problem with my gameport, it uses the ns558 driver, the module gets
> loaded via hotplug/udev at boot, but the gameport gets deactivated somehow.
> I have this Problem for a long time now, and my solution always was rmmod the
> module and load it again after that the gameport is working.
> But now i have 2.6.13-rc5 with debug stuff turned on and noticed that:
>
Please take this up with the input guys, I'm guessing it shouldn't
happen in the first place, but regarding this bug look at the bottom.
> Unable to handle kernel paging request at virtual address 6b6b6b6b
> printing eip:
> e0afc4ab
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT
> Modules linked in: snd_seq_midi snd_seq_midi_event snd_seq video_buf_dvb
> video_buf w83627hf w83781d i2c_sensor i2c_isa snd_pcm_oss snd_mixer_oss
> ipt_MASQUERADE ipt_state iptable_mangle iptable_nat iptable_filter
> ip_conntrack_ftp ip_conntrack_irc ip_conntrack ip_tables rtc joydev analog
> ns558 budget s5h1420 l64781 ves1820 budget_core saa7146 ttpci_eeprom stv0299
> tda8083 ves1x93 dvb_core 8139too snd_via82xx gameport snd_mpu401_uart
> snd_rawmidi snd_seq_device via_rhine crc32 ide_scsi
> CPU: 0
> EIP: 0060:[<e0afc4ab>] Not tainted VLI
> EFLAGS: 00010282 (2.6.13-rc5-debug)
> EIP is at ns558_exit+0x4b/0x79 [ns558]
> eax: 6b6b6b57 ebx: 6b6b6b57 ecx: 00000000 edx: 6b6b6b6b
> esi: 00000000 edi: 00000002 ebp: d7cfdf60 esp: d7cfdf5c
> ds: 007b es: 007b ss: 0068
> Process rmmod (pid: 3267, threadinfo=d7cfc000 task=dfc94080)
> Stack: e0afd140 d7cfdfb4 c0146b4d 00000000 3535736e d7cf0038 c0169941 b7f43000
> b7f42000 d7cfdfa4 c0169de5 b7f42000 b7f43000 df6a6f44 df6a61fc df17d3a4
> df17d3d4 00000000 00cfdfb4 c0169e6a bf856ae0 b7f2917c d7cfc000 c0103889
> Call Trace:
> [<c010483a>] show_stack+0x7a/0x90
> [<c01049c6>] show_registers+0x156/0x1c0
> [<c0104c1c>] die+0x14c/0x2c0
> [<c0118093>] do_page_fault+0x343/0x655
> [<c010430f>] error_code+0x4f/0x54
> [<c0146b4d>] sys_delete_module+0x14d/0x190
> [<c0103889>] syscall_call+0x7/0xb
> Code: 8b 43 10 e8 98 65 de ff 8b 4b 08 b8 a0 2f 46 c0 89 ca f7 da 23 53 04 e8
> 64 c7 62 df 89 d8 e8 5d 01 66 df 8b 53 14 8d 42 ec 89 c3 <8b> 40 14 0f 18 00
> 90 81 fa 20 cf af e0 75 c6 8b 1d c0 d2 af e0
>
Please try this:
Index: linux-2.6/drivers/input/gameport/ns558.c
===================================================================
--- linux-2.6.orig/drivers/input/gameport/ns558.c 2005-07-31 18:10:26.000000000 +0200
+++ linux-2.6/drivers/input/gameport/ns558.c 2005-08-05 21:20:59.000000000 +0200
@@ -275,9 +275,9 @@
static void __exit ns558_exit(void)
{
- struct ns558 *ns558;
+ struct ns558 *ns558, *safe;
- list_for_each_entry(ns558, &ns558_list, node) {
+ list_for_each_entry_safe(ns558, safe, &ns558_list, node) {
gameport_unregister_port(ns558->gameport);
release_region(ns558->io & ~(ns558->size - 1), ns558->size);
kfree(ns558);
-
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