Version-Release number of selected component: kernel Additional info: reporter: libreport-2.6.4 cmdline: BOOT_IMAGE=/vmlinuz-4.6.0-0.rc0.git20.1.fc25.x86_64 root=/dev/mapper/fedora_swir-root ro rd.lvm.lv=fedora_swir/swap rd.lvm.lv=fedora_swir/root rhgb quiet LANG=en_GB.UTF-8 kernel: 4.6.0-0.rc0.git20.1.fc25.x86_64 runlevel: unknown type: Kerneloops Truncated backtrace: WARNING: CPU: 3 PID: 385 at lib/dma-debug.c:1169 check_for_stack+0x90/0xd0 ohci-pci 0000:00:13.0: DMA-API: device driver maps memory from stack [addr=ffff880426cafa7d] Modules linked in: serio_raw amdkfd amd_iommu_v2 alx mdio radeon(+) hid_lenovo(+) ax88179_178a(+) pata_atiixp usbnet i2c_algo_bit drm_kms_helper ttm drm r8169 mii fjes CPU: 3 PID: 385 Comm: systemd-udevd Not tainted 4.6.0-0.rc0.git20.1.fc25.x86_64 #1 Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./FM2A88X-ITX+, BIOS P3.20 12/03/2015 0000000000000286 00000000a490d2cf ffff880426caf670 ffffffff8145b265 ffff880426caf6c0 0000000000000000 ffff880426caf6b0 ffffffff810b2f2b 0000049126caf708 ffff880426cafa7d ffff88042d6a9098 ffff88042d6277a0 Call Trace: [<ffffffff8145b265>] dump_stack+0x86/0xc1 [<ffffffff810b2f2b>] __warn+0xcb/0xf0 [<ffffffff810b2faf>] warn_slowpath_fmt+0x5f/0x80 [<ffffffff8148d2a0>] check_for_stack+0x90/0xd0 [<ffffffff8148d899>] debug_dma_map_page+0xf9/0x150 [<ffffffff816678db>] usb_hcd_map_urb_for_dma+0x5db/0x780 [<ffffffff8166808b>] usb_hcd_submit_urb+0x37b/0xb60 [<ffffffff815bcbef>] ? dev_vprintk_emit+0xbf/0x230 [<ffffffff81118771>] ? __raw_spin_lock_init+0x21/0x60 [<ffffffff8110f034>] ? lockdep_init_map+0x64/0x6c0 [<ffffffff811121a5>] ? trace_hardirqs_on_caller+0xf5/0x1b0 [<ffffffff81669a74>] usb_submit_urb+0x2f4/0x550 [<ffffffff8166a3f4>] usb_start_wait_urb+0x74/0x180 [<ffffffff8166a5dc>] usb_control_msg+0xdc/0x120 [<ffffffff8173dad9>] usbhid_raw_request+0xa9/0x180 [<ffffffffc02930a1>] lenovo_send_cmd_cptkbd+0xa1/0xc0 [hid_lenovo] [<ffffffffc02941c3>] lenovo_probe+0x313/0x460 [hid_lenovo] [<ffffffff81730e30>] ? hid_match_device+0xa0/0xb0 [<ffffffff81733207>] hid_device_probe+0xd7/0x160 [<ffffffff815c18cc>] driver_probe_device+0x22c/0x440 [<ffffffff815c1bb5>] __driver_attach+0xd5/0x100 [<ffffffff815c1ae0>] ? driver_probe_device+0x440/0x440 [<ffffffff815bf113>] bus_for_each_dev+0x73/0xc0 [<ffffffff815c0f9e>] driver_attach+0x1e/0x20 [<ffffffff815c09c6>] bus_add_driver+0x1c6/0x290 [<ffffffffc00bf000>] ? 0xffffffffc00bf000 [<ffffffff815c2880>] driver_register+0x60/0xe0 [<ffffffff81732106>] __hid_register_driver+0x66/0xa0 [<ffffffffc00bf01e>] lenovo_driver_init+0x1e/0x1000 [hid_lenovo] [<ffffffff81002123>] do_one_initcall+0xb3/0x1f0 [<ffffffff81131df5>] ? rcu_read_lock_sched_held+0x45/0x80 [<ffffffff8126b6fc>] ? kmem_cache_alloc_trace+0x2ac/0x310 [<ffffffff811f3f4e>] ? do_init_module+0x27/0x1da [<ffffffff811f3f86>] do_init_module+0x5f/0x1da [<ffffffff8115e588>] load_module+0x21e8/0x2950 [<ffffffff8115ab30>] ? __symbol_put+0x70/0x70 [<ffffffff81159b30>] ? show_coresize+0x30/0x30 [<ffffffff8103fd19>] ? sched_clock+0x9/0x10 [<ffffffff8115ee62>] SYSC_init_module+0x172/0x1b0 [<ffffffff8115efce>] SyS_init_module+0xe/0x10 [<ffffffff81004039>] do_syscall_64+0x69/0x190 [<ffffffff818ce5ff>] entry_SYSCALL64_slow_path+0x25/0x25
Created attachment 1140636 [details] File: backtrace
Created attachment 1140637 [details] File: dmesg
Created attachment 1140638 [details] File: proc_modules
Created attachment 1140639 [details] File: suspend_stats
I've sent a patch upstream for this issue. We'll see what they say.
This bug was accidentally moved from POST to MODIFIED via an error in automation, please see mmccune with any questions
commit ea36ae09105b7688225c02d33f1f3213299360f6 Author: Josh Boyer <jwboyer> Date: Mon Mar 28 09:22:14 2016 -0400 HID: lenovo: Don't use stack variables for DMA buffers in 4.6-rc4