Bug 759868

Summary: [abrt] kernel: WARNING: at fs/dcache.c:2460 prepend_path+0x11b/0x131()
Product: [Fedora] Fedora Reporter: mertensb.mazda
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:48276a27f5bd0e4e67c510d3e0630a9287f067f2
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-01-04 12:43:45 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 mertensb.mazda 2011-12-04 12:59:32 UTC 
libreport version: 2.0.6
abrt_version:   2.0.4.981
cmdline:        BOOT_IMAGE=/vmlinuz-3.1.2-1.fc16.x86_64 root=/dev/mapper/vg0-root ro rd.md=0 rd.dm=0 KEYTABLE=be-latin1 quiet SYSFONT=latarcyrheb-sun16 rhgb rd.lvm.lv=vg0/root rd.luks=0 LANG=en_US.UTF-8
kernel:         undefined
reason:         WARNING: at fs/dcache.c:2460 prepend_path+0x11b/0x131()
time:           Sun Dec  4 13:56:03 2011

backtrace:
:WARNING: at fs/dcache.c:2460 prepend_path+0x11b/0x131()
:Hardware name: Aspire 5738                    
:Root dentry has weird name <>
:Modules linked in: tcp_lp ppdev parport_pc lp parport fuse nfs fscache auth_rpcgss nfs_acl lockd ip6t_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter xt_state nf_conntrack ip6_tables sunrpc uvcvideo videodev media v4l2_compat_ioctl32 snd_hda_codec_hdmi arc4 snd_hda_codec_realtek acer_wmi sparse_keymap joydev snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm microcode ath9k mac80211 ath9k_common ath9k_hw ath cfg80211 rfkill iTCO_wdt serio_raw iTCO_vendor_support i2c_i801 tg3 snd_timer snd soundcore snd_page_alloc uinput wmi i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
:Pid: 4701, comm: abcde Not tainted 3.1.2-1.fc16.x86_64 #1
:Call Trace:
: [<ffffffff81057a1e>] warn_slowpath_common+0x83/0x9b
: [<ffffffff81057ad9>] warn_slowpath_fmt+0x46/0x48
: [<ffffffff81139338>] prepend_path+0x11b/0x131
: [<ffffffff814b7101>] ? rwsem_down_write_failed+0xf/0x15
: [<ffffffff8113bb62>] sys_getcwd+0x189/0x1c8
: [<ffffffff81131a9e>] ? path_put+0x1f/0x23
: [<ffffffff814bd902>] system_call_fastpath+0x16/0x1b

comment:
:the laptop suspended because the battery was low
:after plugging in the power cable and restarting the machine I continued to work
:I started abcde to rip a CD when this crash occured.

smolt_data:
:
:
:General
:=================================
:UUID: 1e53eb6b-5aa4-4790-80d0-3bc7012dd895
:OS: Fedora release 16 (Verne)
:Default run level: Unknown
:Language: en_US.UTF-8
:Platform: x86_64
:BogoMIPS: 4188.76
:CPU Vendor: GenuineIntel
:CPU Model: Pentium(R) Dual-Core CPU       T4300  @ 2.10GHz
:CPU Stepping: 10
:CPU Family: 6
:CPU Model Num: 23
:Number of CPUs: 2
:CPU Speed: 2100
:System Memory: 3885
:System Swap: 4095
:Vendor: Acer
:System: Aspire 5738 0100
:Form factor: Notebook
:Kernel: 3.1.2-1.fc16.x86_64
:SELinux Enabled: 1
:SELinux Policy: targeted
:SELinux Enforce: Enforcing
:MythTV Remote: Unknown
:MythTV Role: Unknown
:MythTV Theme: Unknown
:MythTV Plugin: 
:MythTV Tuner: -1
:
:
:Devices
:=================================
:(32902:10521:4133:517) pci, None, PCI/ISA, ICH9M LPC Interface Controller
:(5348:5784:4133:519) pci, tg3, ETHERNET, NetLink BCM5784M Gigabit Ethernet PCIe
:(32902:10818:4133:517) pci, i915, VIDEO, Mobile 4 Series Chipset Integrated Graphics Controller
:(32902:10819:4133:517) pci, None, VIDEO, Mobile 4 Series Chipset Integrated Graphics Controller
:(32902:10560:4133:517) pci, pcieport, PCI/PCI, 82801I (ICH9 Family) PCI Express Port 1
:(32902:10562:4133:517) pci, pcieport, PCI/PCI, 82801I (ICH9 Family) PCI Express Port 2
:(32902:10568:4133:517) pci, pcieport, PCI/PCI, 82801I (ICH9 Family) PCI Express Port 5
:(32902:10558:4133:517) pci, snd_hda_intel, MULTIMEDIA, 82801I (ICH9 Family) HD Audio Controller
:(32902:10537:4133:517) pci, ahci, STORAGE, ICH9M/M-E SATA AHCI Controller
:(32902:10549:4133:517) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #2
:(32902:10544:4133:517) pci, i801_smbus, SERIAL, 82801I (ICH9 Family) SMBus Controller
:(32902:9288:4133:517) pci, None, PCI/PCI, 82801 Mobile PCI Bridge
:(5772:42:4187:57375) pci, ath9k, NETWORK, AR928X Wireless Network Adapter (PCI-Express)
:(32902:10548:4133:517) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #1
:(32902:10551:4133:517) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #4
:(32902:10552:4133:517) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #5
:(32902:10816:4133:517) pci, agpgart-intel, HOST/PCI, Mobile 4 Series Chipset Memory Controller Hub
:(32902:10550:4133:517) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #3
:(32902:10553:4133:517) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #6
:(32902:10554:4133:517) pci, ehci_hcd, USB, 82801I (ICH9 Family) USB2 EHCI Controller #1
:(32902:10556:4133:517) pci, ehci_hcd, USB, 82801I (ICH9 Family) USB2 EHCI Controller #2
:
:
:Filesystem Information
:=================================
:device mtpt type bsize frsize blocks bfree bavail file ffree favail
:-------------------------------------------------------------------
:/dev/mapper/vg0-root / ext4 4096 4096 2580302 1544237 1413165 655360 490995 490995
:/dev/mapper/vg0-home /home ext4 4096 4096 2580302 1180033 1048961 655360 607712 607712
:/dev/sda5 /boot ext4 1024 1024 495844 416181 390581 128016 127789 127789
:/dev/mapper/vg0-srv /srv ext4 4096 4096 258022 244802 231695 65536 63941 63941
:/dev/mapper/vg0-data WITHHELD ext4 4096 4096 10321232 2835736 2311448 2621440 2536916 2536916
:/dev/mapper/vg0-var /var ext4 4096 4096 258022 164617 151510 65536 61413 61413
:/dev/mapper/vg0-tmp /tmp ext4 4096 4096 258022 249462 236355 65536 65413 65413
:
Comment 1 mertensb.mazda 2011-12-04 13:01:26 UTC 
one possible important detail: abcde was running on an NFS share.

After resuming from the suspend the directory was not mounted so the working directory of abcde was not valid.
Comment 2 Josh Boyer 2012-01-04 12:43:45 UTC 

*** This bug has been marked as a duplicate of bug 766277 ***