Bug 720128

Summary: [abrt] kernel: WARNING: at lib/dma-debug.c:875 check_for_stack+0x95/0xd3(): TAINTED ---------W
Product: [Fedora] Fedora Reporter: Mikko Tiihonen <mikko.tiihonen>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: aquini, gansalmon, itamar, jonathan, jwboyer, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:f446cf309f8d0f1710971dd6d568b2661b3b7cc8
Fixed In Version: kernel-3.0.1-3.fc16 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-08-18 02:32:50 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Mikko Tiihonen 2011-07-09 20:00:10 UTC 
abrt version: 2.0.3
architecture:   x86_64
cmdline:        ro root=UUID=10033589-14c8-48f0-8d13-e2b4bf44fce6 rd_NO_LUKS rd_NO_LVM rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=fi rhgb quiet selinux=0 pcie_aspm=force
comment:        The warning appears on syslog on every boot
component:      kernel
kernel:         undefined
kernel_tainted: 512
kernel_tainted_long: Taint on warning.
os_release:     Fedora release 16 (Rawhide)
package:        kernel
reason:         WARNING: at lib/dma-debug.c:875 check_for_stack+0x95/0xd3()
reported_to:    kerneloops: URL=http://submit.kerneloops.org/submitoops.php
time:           Sat Jul  9 22:44:56 2011

backtrace:
:WARNING: at lib/dma-debug.c:875 check_for_stack+0x95/0xd3()
:Hardware name: 42844DG
:ehci_hcd 0000:00:1d.0: DMA-API: device driver maps memory fromstack [addr=ffff8804221f9c74]
:Modules linked in: cdc_ncm(+) media v4l2_compat_ioctl32 usbnet mii cdc_wdm cdc_acm microcode joydev snd_hda_codec_conexant i2c_i801 snd_hda_intel snd_hda_codec iwlagn snd_hwdep snd_seq snd_seq_device mac80211 snd_pcm xhci_hcd cfg80211 iTCO_wdt iTCO_vendor_support snd_timer snd_page_alloc e1000e thinkpad_acpi rfkill snd virtio_net soundcore kvm_intel kvm uinput btrfs zlib_deflate libcrc32c sdhci_pci firewire_ohci sdhci firewire_core crc_itu_t mmc_core wmi i915 drm_kms_helper drm i2c_algo_bit i2c_core video
:Pid: 672, comm: modprobe Not tainted 3.0-0.rc6.git0.1.fc16.x86_64 #1
:Call Trace:
: [<ffffffff81057b0c>] warn_slowpath_common+0x83/0x9b
: [<ffffffff81057bc7>] warn_slowpath_fmt+0x46/0x48
: [<ffffffff8126c2c0>] check_for_stack+0x95/0xd3
: [<ffffffff8126c517>] debug_dma_map_page+0xc8/0xf1
: [<ffffffff8137d47e>] dma_map_single_attrs.constprop.7+0xa7/0xba
: [<ffffffff81268795>] ? swiotlb_dma_mapping_error+0x15/0x23
: [<ffffffff8137d6e7>] usb_hcd_map_urb_for_dma+0x256/0x2e1
: [<ffffffff8137dd80>] usb_hcd_submit_urb+0x60e/0x6eb
: [<ffffffff81086590>] ? lockdep_init_map+0xa0/0x115
: [<ffffffff8137eb81>] usb_submit_urb+0x301/0x313
: [<ffffffff81074d3b>] ? __init_waitqueue_head+0x3a/0x4b
: [<ffffffff8137f83f>] usb_start_wait_urb+0x70/0x174
: [<ffffffff8137ecb3>] ? usb_alloc_urb+0x1b/0x43
: [<ffffffff8137ecb3>] ? usb_alloc_urb+0x1b/0x43
: [<ffffffff8137fb79>] usb_control_msg+0xde/0x102
: [<ffffffffa041ad6c>] cdc_ncm_do_request.constprop.2+0x61/0x6c [cdc_ncm]
: [<ffffffffa041b3c4>] cdc_ncm_bind+0x64d/0x965 [cdc_ncm]
: [<ffffffff81086590>] ? lockdep_init_map+0xa0/0x115
: [<ffffffffa0402b23>] usbnet_probe+0x2c2/0x65a [usbnet]
: [<ffffffff81089781>] ? trace_hardirqs_on_caller+0x10b/0x12f
: [<ffffffffa041ad09>] cdc_ncm_probe+0xe/0x10 [cdc_ncm]
: [<ffffffff81382936>] usb_probe_interface+0x150/0x1bd
: [<ffffffff81322c3b>] driver_probe_device+0x131/0x213
: [<ffffffff81322d7b>] __driver_attach+0x5e/0x82
: [<ffffffff81322d1d>] ? driver_probe_device+0x213/0x213
: [<ffffffff81321c7c>] bus_for_each_dev+0x59/0x8f
: [<ffffffff8132280f>] driver_attach+0x1e/0x20
: [<ffffffff81322427>] bus_add_driver+0xd4/0x22a
: [<ffffffff8132320a>] driver_register+0x98/0x105
: [<ffffffff81381a63>] usb_register_driver+0xb8/0x17c
: [<ffffffffa0420000>] ? 0xffffffffa041ffff
: [<ffffffffa042002c>] cdc_ncm_init+0x2c/0x1000 [cdc_ncm]
: [<ffffffff81002099>] do_one_initcall+0x7f/0x13a
: [<ffffffffa0420000>] ? 0xffffffffa041ffff
: [<ffffffff810943bc>] sys_init_module+0x114/0x268
: [<ffffffff814fa242>] system_call_fastpath+0x16/0x1b
Comment 1 Josh Boyer 2011-08-01 20:00:02 UTC 
The cdc_ncm driver seems to have not gotten all of it's local stack variable usage cleared up and our development kernels have CONFIG_DMA_API_DEBUG set so there are extra checks done on the parameters passed.  This appears to be a bug in the cdc_ncm driver.  I've emailed upstream about this.

I don't see any changes in the kernel around this driver from 3.0-0.rc6.git0.1.fc16 until the current Linus head, but it would be nice if you could confirm this is still an issue with kernel-3.0.0-2.fc16 if you are still on F16 and/or kernel-3.1.0-0.rc0.git15.1.fc17 if you are following rawhide.
Comment 2 Josh Boyer 2011-08-02 13:45:42 UTC 
Could you please test this kernel and let me know if it solves the stack trace?

http://koji.fedoraproject.org/koji/taskinfo?taskID=3246505
Comment 3 Mikko Tiihonen 2011-08-03 06:24:54 UTC 
I tried kernel-3.0.0-2.fc16 which did not report any problems (but then I found out it didn't have the debugging enabled).

I'm now running 3.0.0-3.fc16 and the stacktrace from the bugreport is gone.
Comment 4 Josh Boyer 2011-08-03 12:02:41 UTC 
Great, thanks for testing!  I'll get the change pulled back into an official F16 kernel today.
Comment 5 Fedora Update System 2011-08-09 00:04:33 UTC 
kernel-3.0.1-3.fc16 has been submitted as an update for Fedora 16.
https://admin.fedoraproject.org/updates/kernel-3.0.1-3.fc16
Comment 6 Fedora Update System 2011-08-09 02:53:04 UTC 
Package kernel-3.0.1-3.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing kernel-3.0.1-3.fc16'
as soon as you are able to, then reboot.
Please go to the following url:
https://admin.fedoraproject.org/updates/kernel-3.0.1-3.fc16
then log in and leave karma (feedback).
Comment 7 Fedora Update System 2011-08-16 12:47:06 UTC 
kernel-2.6.40.3-0.fc15 has been submitted as an update for Fedora 15.
https://admin.fedoraproject.org/updates/kernel-2.6.40.3-0.fc15
Comment 8 Fedora Update System 2011-08-18 02:29:59 UTC 
kernel-2.6.40.3-0.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2011-08-22 14:49:54 UTC 
kernel-3.0.1-3.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.