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  #1  
Old 19th July 2012, 03:04 AM
pavka Offline
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Join Date: May 2007
Location: Brisbane, Australia
Age: 44
Posts: 32
linuxchrome
Question Failed to fork child process (Resource temporarily unavailable)

Hi all,

I started getting this message yesterday:
"Failed to fork child process (Resource temporarily unavailable)"
when I try to open anything in GNOME. The system was sluggish, so I went to Ctrl-Alt-F2 to try and log in as root, and saw some error messages about a disk partition (the one mounted as /var ). Rebooted into a live CD with GParted, (hopefully) fixed it with fsck, rebooted again but now I get the "failed fork" messages again, though with no errors showing about the /var file system.

I don't know where to look for problems, and what problems to look for - any idea what might be happening?
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  #2  
Old 19th July 2012, 05:04 AM
stevea Offline
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Join Date: Apr 2006
Location: Ohio, USA
Posts: 8,553
linuxfirefox
Re: Failed to fork child process (Resource temporarily unavailable)

Look a 'dmesg'. The failure of exec is a kernel issue.

Aside from too many procs or completely filled dram AND swap I don't know what resource would be absent.

What for 'free' report when this happens ?
What doe "ps -aefl "look like ? A few hundred entries or many thousands ?
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Last edited by stevea; 19th July 2012 at 05:17 AM.
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  #3  
Old 19th July 2012, 07:33 AM
jpollard Offline
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Join Date: Aug 2009
Location: Waldorf, Maryland
Posts: 6,662
linuxfirefox
Re: Failed to fork child process (Resource temporarily unavailable)

Login/out several times. After the last logout switch to a VT and login as root.

do a "ps -u <username>" and look for leftover processes from the login.

I had the same issue that started some months ago and found that gnome 3 applications (along with some KDE applications) get left over after logout. There is a bug (# 832084 https://bugzilla.redhat.com/show_bug.cgi?id=832084) in reference to Xfce problems in the same area.

My wife (currently logged out) uses cinnamon, and has 9 processes left over - most of them nepomukserver. I have seen pulseaudio user servers left and others.

My current workaround is to switch to a VT and kill them ("killall -u <user> -s 9", I found the -s 9 needed as most of them seem to ignore 15)
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  #4  
Old 19th July 2012, 08:50 AM
pavka Offline
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Join Date: May 2007
Location: Brisbane, Australia
Age: 44
Posts: 32
linuxchrome
Re: Failed to fork child process (Resource temporarily unavailable)

Quote:
Originally Posted by stevea View Post
Look a 'dmesg'.
This is what I get (truncated, there's a size limit at the forum), what should I be looking for?
It's after restart, so the errors may not be there :-((

Code:
kjournald starting.  Commit interval 5 seconds
EXT3-fs (sdb2): orphan cleanup on readonly fs
ext3_orphan_cleanup: deleting unreferenced inode 106507
ext3_orphan_cleanup: deleting unreferenced inode 106502
ext3_orphan_cleanup: deleting unreferenced inode 106501
ext3_orphan_cleanup: deleting unreferenced inode 106499
ext3_orphan_cleanup: deleting unreferenced inode 106498
EXT3-fs (sdb2): 5 orphan inodes deleted
EXT3-fs (sdb2): recovery complete
EXT3-fs (sdb2): mounted filesystem with ordered data mode
dracut: Mounted root filesystem /dev/sdb2
dracut: Loading SELinux policy
SELinux: 2048 avtab hash slots, 210204 rules.
SELinux: 2048 avtab hash slots, 210204 rules.
SELinux:  9 users, 13 roles, 3412 types, 178 bools, 1 sens, 1024 cats
SELinux:  81 classes, 210204 rules
SELinux:  Completing initialization.
SELinux:  Setting up existing superblocks.
SELinux: initialized (dev sdb2, type ext3), uses xattr
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
SELinux: initialized (dev usbfs, type usbfs), uses genfs_contexts
SELinux: initialized (dev selinuxfs, type selinuxfs), uses genfs_contexts
SELinux: initialized (dev mqueue, type mqueue), uses transition SIDs
SELinux: initialized (dev hugetlbfs, type hugetlbfs), uses transition SIDs
SELinux: initialized (dev devpts, type devpts), uses transition SIDs
SELinux: initialized (dev anon_inodefs, type anon_inodefs), uses genfs_contexts
SELinux: initialized (dev pipefs, type pipefs), uses task SIDs
SELinux: initialized (dev debugfs, type debugfs), uses genfs_contexts
SELinux: initialized (dev sockfs, type sockfs), uses task SIDs
SELinux: initialized (dev devtmpfs, type devtmpfs), uses transition SIDs
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
SELinux: initialized (dev proc, type proc), uses genfs_contexts
SELinux: initialized (dev bdev, type bdev), uses genfs_contexts
SELinux: initialized (dev rootfs, type rootfs), uses genfs_contexts
SELinux: initialized (dev sysfs, type sysfs), uses genfs_contexts
type=1403 audit(1342717335.648:2): policy loaded auid=4294967295 ses=4294967295
dracut: 
dracut: Switching root
udev: starting version 153
microcode: CPU0 sig=0x6fb, pf=0x10, revision=0xb3
microcode: CPU1 sig=0x6fb, pf=0x10, revision=0xb3
microcode: CPU2 sig=0x6fb, pf=0x10, revision=0xb3
microcode: CPU3 sig=0x6fb, pf=0x10, revision=0xb3
microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
microcode: CPU0 updated to revision 0xb6, date = 2007-07-13
r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded
r8169 0000:04:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
microcode: CPU1 updated to revision 0xb6, date = 2007-07-13
r8169 0000:04:00.0: setting latency timer to 64
  alloc irq_desc for 29 on node -1
  alloc kstat_irqs on node -1
r8169 0000:04:00.0: irq 29 for MSI/MSI-X
r8169 0000:04:00.0: eth0: RTL8168b/8111b at 0xffffc900060ba000, 00:1a:4d:50:76:2d, XID 18000000 IRQ 29
microcode: CPU2 updated to revision 0xb6, date = 2007-07-13
microcode: CPU3 updated to revision 0xb6, date = 2007-07-13
parport_pc 00:08: reported by Plug and Play ACPI
parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
i801_smbus 0000:00:1f.3: PCI INT C -> GSI 18 (level, low) -> IRQ 18
nvidia: module license 'NVIDIA' taints kernel.
Disabling lock debugging due to kernel taint
ppdev: user-space parallel port driver
iTCO_vendor_support: vendor-support=0
nvidia 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
nvidia 0000:01:00.0: setting latency timer to 64
vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=io+mem
NVRM: loading NVIDIA UNIX x86_64 Kernel Module  260.19.36  Tue Jan 18 16:56:11 PST 2011
iTCO_wdt: Intel TCO WatchDog Timer Driver v1.05
iTCO_wdt: Found a ICH9 TCO device (Version=2, TCOBASE=0x0460)
iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
cfg80211: Calling CRDA to update world regulatory domain
type=1400 audit(1342717340.581:3): avc:  denied  { mmap_zero } for  pid=779 comm="vbetool" scontext=system_u:system_r:vbetool_t:s0-s0:c0.c1023 tcontext=system_u:system_r:vbetool_t:s0-s0:c0.c1023 tclass=memprotect
cfg80211: World regulatory domain updated:
    (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
    (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
    (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
    (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
  alloc irq_desc for 20 on node -1
  alloc kstat_irqs on node -1
rt61pci 0000:05:00.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
phy0: Selected rate control algorithm 'minstrel'
Registered led device: rt61pci-phy0::radio
Registered led device: rt61pci-phy0::assoc
cfg80211: Calling CRDA for country: US
cfg80211: Regulatory domain changed to country: US
    (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
    (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm)
    (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)
    (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)
  alloc irq_desc for 22 on node -1
  alloc kstat_irqs on node -1
HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
  alloc irq_desc for 30 on node -1
  alloc kstat_irqs on node -1
HDA Intel 0000:00:1b.0: irq 30 for MSI/MSI-X
HDA Intel 0000:00:1b.0: setting latency timer to 64
usblp0: USB Bidirectional printer dev 3 if 0 alt 0 proto 2 vid 0x04F9 pid 0x0033
usbcore: registered new interface driver usblp
EXT3-fs (sdb2): using internal journal
kjournald starting.  Commit interval 5 seconds
EXT3-fs (sdb6): using internal journal
EXT3-fs (sdb6): mounted filesystem with ordered data mode
SELinux: initialized (dev sdb6, type ext3), uses xattr
kjournald starting.  Commit interval 5 seconds
EXT3-fs (sdb5): using internal journal
EXT3-fs (sdb5): mounted filesystem with ordered data mode
SELinux: initialized (dev sdb5, type ext3), uses xattr
kjournald starting.  Commit interval 5 seconds
EXT3-fs (sdb1): using internal journal
EXT3-fs (sdb1): mounted filesystem with ordered data mode
SELinux: initialized (dev sdb1, type ext3), uses xattr
Adding 8290300k swap on /dev/sda3.  Priority:-1 extents:1 across:8290300k 
Adding 8299516k swap on /dev/sdb3.  Priority:-2 extents:1 across:8299516k 
SELinux: initialized (dev binfmt_misc, type binfmt_misc), uses genfs_contexts
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
ip6_tables: (C) 2000-2006 Netfilter Core Team
rt61pci 0000:05:00.0: firmware: requesting rt2561s.bin
ADDRCONF(NETDEV_UP): wlan0: link is not ready
p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible.
p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible.
p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible.
p4-clockmod: Warning: EST-capable CPU detected. The acpi-cpufreq module offers voltage scaling in addition of frequency scaling. You should use that instead of p4-clockmod, if possible.
p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts
/dev/vmmon[1590]: Module vmmon: registered with major=10 minor=165
/dev/vmmon[1590]: Initial HV check: anyNotCapable=0 anyUnlocked=0 anyEnabled=1 anyDisabled=0
/dev/vmmon[1590]: HV check: anyNotCapable=0 anyUnlocked=0 anyEnabled=1 anyDisabled=0
/dev/vmmon[1590]: Module vmmon: initialized
/dev/vmci[1598]: VMCI: Driver initialized.
/dev/vmci[1598]: Module vmci: registered with major=10 minor=57
/dev/vmci[1598]: Module vmci: initialized




it87: Found IT8718F chip at 0x290, revision 4
it87: in3 is VCC (+5V)
it87: Beeping is supported
r8169 0000:04:00.0: eth0: link up
r8169 0000:04:00.0: eth0: link up
/dev/vmnet: open called by PID 1655 (vmnet-bridge)
/dev/vmnet: hub 0 does not exist, allocating memory.
/dev/vmnet: port on hub 0 successfully opened
bridge-eth0: up
bridge-eth0: attached
vmnet8: no IPv6 routers present
vmnet1: no IPv6 routers present
eth0: no IPv6 routers present
fuse init (API version 7.13)
SELinux: initialized (dev fuse, type fuse), uses genfs_contexts
kjournald starting.  Commit interval 5 seconds
EXT3-fs (sda1): warning: checktime reached, running e2fsck is recommended
EXT3-fs (sda1): using internal journal
EXT3-fs (sda1): mounted filesystem with ordered data mode
SELinux: initialized (dev sda1, type ext3), uses xattr
kjournald starting.  Commit interval 5 seconds
EXT3-fs (sda2): warning: checktime reached, running e2fsck is recommended
EXT3-fs (sda2): using internal journal
EXT3-fs (sda2): mounted filesystem with ordered data mode
SELinux: initialized (dev sda2, type ext3), uses xattr
lo: Disabled Privacy Extensions
SELinux: initialized (dev proc, type proc), uses genfs_contexts
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