Bug 45281

Summary:	sony_laptop module crashes while loading
Product:	Drivers	Reporter:	Displacer (disinbox)
Component:	Platform_x86	Assignee:	Mattia Dongili (malattia)
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	alan, malattia, mus.svz
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	3.6	Subsystem:
Regression:	Yes	Bisected commit-id:
Attachments:	dmesg dmesg output DSDT from /sys/firmware/acpi/tables/DSDT kernel config

Description Displacer 2012-07-29 08:36:20 UTC

Created attachment 76461 [details]
dmesg

[    7.620987] Call Trace:
[    7.621375]  [<ffffffffa013bee3>] sony_nc_add+0x836/0xd6a [sony_laptop]
[    7.621768]  [<ffffffff81279035>] acpi_device_probe+0x49/0x117
[    7.622160]  [<ffffffff812d4a0a>] driver_probe_device+0xb0/0x1bf
[    7.622546]  [<ffffffff812d4b6f>] __driver_attach+0x56/0x7a
[    7.622933]  [<ffffffff812d4b19>] ? driver_probe_device+0x1bf/0x1bf
[    7.623322]  [<ffffffff812d3335>] bus_for_each_dev+0x54/0x80
[    7.623707]  [<ffffffff812d45a8>] driver_attach+0x19/0x1b
[    7.624094]  [<ffffffff812d419c>] bus_add_driver+0xb7/0x20a
[    7.624483]  [<ffffffffa0142000>] ? 0xffffffffa0141fff
[    7.624869]  [<ffffffff812d4fd5>] driver_register+0x8c/0xf9
[    7.625253]  [<ffffffffa0142000>] ? 0xffffffffa0141fff
[    7.625638]  [<ffffffff81279783>] acpi_bus_register_driver+0x3e/0x40
[    7.626028]  [<ffffffffa0142057>] sony_laptop_init+0x57/0x86 [sony_laptop]
[    7.626417]  [<ffffffff810001fa>] do_one_initcall+0x7a/0x12c
[    7.626807]  [<ffffffff81075b56>] sys_init_module+0x1556/0x17ba
[    7.627193]  [<ffffffff81071ad8>] ? sys_getegid16+0x45/0x45
[    7.627581]  [<ffffffff810c7499>] ? vm_mmap_pgoff+0x66/0x73
[    7.627971]  [<ffffffff81596062>] system_call_fastpath+0x16/0x1b

Comment 1 mus.svz 2012-08-23 17:07:44 UTC

I have a similar problem since kernel 3.5.
3.4.x series works fine, so this is definitively a regression.

I'm running Arch Linux x64 on a Sony Vaio S VPCS11C5E.

In the attached dmesg I had blacklisted sony_laptop, booted up, logged into tty1 and ran "modprobe sony_laptop debug=1" which causes the crash.

Comment 2 mus.svz 2012-08-23 17:08:22 UTC

Created attachment 78331 [details]
dmesg output

Comment 3 Alan 2012-09-06 15:58:11 UTC

[   22.368218]  [<ffffffffa03aae03>] ? sony_nc_buffer_call.constprop.14+0x43/0xa0 [sony_laptop]
[   22.368236]  [<ffffffffa03ab759>] sony_nc_add+0x789/0x1180 [sony_laptop]
[   22.368251]  [<ffffffff811e8aa2>] ? sysfs_do_create_link+0xe2/0x220
[   22.368265]  [<ffffffff812aacd5>] acpi_device_probe+0x50/0x11d

Comment 4 Mattia Dongili 2012-09-06 22:00:17 UTC

Could you add DSDT and the kernel config?

Comment 5 mus.svz 2012-09-07 13:10:36 UTC

Created attachment 79411 [details]
DSDT from /sys/firmware/acpi/tables/DSDT

Comment 6 mus.svz 2012-09-07 13:11:11 UTC

Created attachment 79421 [details]
kernel config

Comment 7 mus.svz 2012-10-03 12:48:07 UTC

same problem with 3.6, any update on this?

Comment 8 Mattia Dongili 2012-10-10 22:21:40 UTC

Not really, if you can do some C programming could you try to print some debug statement about what is in the acpi buffer before calling memcpy at line 904
 memcpy(buffer, object->buffer.pointer, len);
Else I can try to instrument to code a bit and send you a patch to find out more information (but you may need be patient...)
Thanks

Comment 9 Mattia Dongili 2012-10-26 23:16:28 UTC

Hi, could you try the patch attached here:
https://bugzilla.kernel.org/show_bug.cgi?id=48671

Comment 10 Mattia Dongili 2012-10-26 23:17:30 UTC

please follow up on the other bug report that contains a bisection of the problem as well as a tentative patch.

*** This bug has been marked as a duplicate of bug 48671 ***