Comment # 10
on bug 948369
from Oliver Neukum
For the record this oops extracted from the boot log looks like the root cause:
Oct 08 21:48:16 TumbleWeed kernel: input: Generic X-Box pad as
/devices/pci0000:00/0000:00:13.0/usb9/9-1/9-1:1.0/input/input5
Oct 08 21:48:16 TumbleWeed kernel: BUG: unable to handle kernel NULL pointer
dereference at 000000000000004e
Oct 08 21:48:16 TumbleWeed kernel: IP: [<ffffffffa050258a>]
xpad_probe+0x37a/0x9eb [xpad]
Oct 08 21:48:16 TumbleWeed kernel: PGD 0
Oct 08 21:48:16 TumbleWeed kernel: Oops: 0000 [#1] PREEMPT SMP
Oct 08 21:48:16 TumbleWeed kernel: Modules linked in: xpad(+) v4l2_common
videodev kvm sp5100_tco snd crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
rfkill soundcore aesni_intel aes_x86_64 lrw gf128mul glue_helper ac97_bus
i2c_piix4 ablk_helper fam15h_power k10temp edac_core edac_mce_amd tpm_infineon
acpi_cpufreq tpm_tis processor button cryptd shpchp tpm floppy(+) pcspkr
8250_fintek wmi btrfs xor raid6_pq crc32c_intel serio_raw amdkfd firewire_ohci
amd_iommu_v2 firewire_core crc_itu_t sr_mod cdrom ohci_pci radeon i2c_algo_bit
drm_kms_helper ttm r8169 mii xhci_pci xhci_hcd drm sg
Oct 08 21:48:16 TumbleWeed kernel: CPU: 6 PID: 662 Comm: systemd-udevd Not
tainted 4.2.1-1-desktop #1
Oct 08 21:48:16 TumbleWeed kernel: Hardware name: Gigabyte Technology Co., Ltd.
GA-970A-UD3/GA-970A-UD3, BIOS F7 10/22/2012
Oct 08 21:48:16 TumbleWeed kernel: task: ffff8802246760c0 ti: ffff8800cb2e4000
task.ti: ffff8800cb2e4000
Oct 08 21:48:16 TumbleWeed kernel: RIP: 0010:[<ffffffffa050258a>]
[<ffffffffa050258a>] xpad_probe+0x37a/0x9eb [xpad]
Oct 08 21:48:16 TumbleWeed kernel: RSP: 0018:ffff8800cb2e7a98 EFLAGS: 00010206
Oct 08 21:48:16 TumbleWeed kernel: RAX: ffff88021eefbf40 RBX: ffff8800ce858090
RCX: 0000000000000000
Oct 08 21:48:16 TumbleWeed kernel: RDX: 0000000000000048 RSI: 0000000000000008
RDI: ffff8800ce858000
Oct 08 21:48:16 TumbleWeed kernel: RBP: ffff8800cb2e7ae8 R08: ffff8802227d6060
R09: ffff88022ebd1098
Oct 08 21:48:16 TumbleWeed kernel: R10: 0000000000000000 R11: ffff88021bf8e606
R12: ffff88021be1c800
Oct 08 21:48:16 TumbleWeed kernel: R13: 000000000000005e R14: ffff88021be1c830
R15: ffff8800cfa16a00
Oct 08 21:48:16 TumbleWeed kernel: FS: 00007ff8d95f78c0(0000)
GS:ffff88022ed80000(0000) knlGS:0000000000000000
Oct 08 21:48:16 TumbleWeed kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Oct 08 21:48:16 TumbleWeed kernel: CR2: 000000000000004e CR3: 00000000cb2d7000
CR4: 00000000000406e0
Oct 08 21:48:16 TumbleWeed kernel: Stack:
Oct 08 21:48:16 TumbleWeed kernel: ffff8800cb2e7ae8 ffffffff0000ffff
ffff8800ce858000 ffff880223b70000
Oct 08 21:48:16 TumbleWeed kernel: ffffffffa0505088 ffff8800ce858090
ffff8800ce858000 ffffffffa0505088
Oct 08 21:48:16 TumbleWeed kernel: ffff880223b70030 ffffffffa05051c0
ffff8800cb2e7b38 ffffffff81502602
Oct 08 21:48:16 TumbleWeed kernel: Call Trace:
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff81502602>]
usb_probe_interface+0x1b2/0x2d0
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff81486ac4>]
driver_probe_device+0x1f4/0x460
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff81486dc0>]
__driver_attach+0x90/0xa0
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff81484844>]
bus_for_each_dev+0x64/0xa0
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff814862de>]
driver_attach+0x1e/0x20
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff81485e7b>]
bus_add_driver+0x1eb/0x280
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff81487680>]
driver_register+0x60/0xe0
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff81500f44>]
usb_register_driver+0x84/0x140
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffffa00f801e>]
xpad_driver_init+0x1e/0x1000 [xpad]
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff810002f3>]
do_one_initcall+0xb3/0x200
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff816a1fc5>]
do_init_module+0x60/0x1f8
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff810ee5c3>]
load_module+0x1653/0x1bd0
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff810eed48>]
SYSC_finit_module+0x98/0xc0
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff810eed8e>]
SyS_finit_module+0xe/0x10
Oct 08 21:48:16 TumbleWeed kernel: [<ffffffff816aa032>]
entry_SYSCALL_64_fastpath+0x16/0x75
Oct 08 21:48:16 TumbleWeed kernel: DWARF2 unwinder stuck at
entry_SYSCALL_64_fastpath+0x16/0x75
Oct 08 21:48:16 TumbleWeed kernel:
Oct 08 21:48:16 TumbleWeed kernel: Leftover inexact backtrace:
Oct 08 21:48:16 TumbleWeed kernel: Code: d2 41 83 bf d4 00 00 00 03 4d 8b 47 50
48 8b 4f 08 49 8b 7f 08 0f 95 c2 48 8d 34 d5 00 00 00 00 48 8b 49 18 48 01 f2
48 8d 14 d1 <0f> b6 72 06 0f b6 52 02 c1 e2 0f 89 d1 8b 17 48 89 78 48 81 c9
Oct 08 21:48:16 TumbleWeed kernel: RIP [<ffffffffa050258a>]
xpad_probe+0x37a/0x9eb [xpad]
Oct 08 21:48:16 TumbleWeed kernel: RSP <ffff8800cb2e7a98>
Oct 08 21:48:16 TumbleWeed kernel: CR2: 000000000000004e
Oct 08 21:48:16 TumbleWeed kernel: ---[ end trace 8ca0749e8b2846b3 ]---