Zsh fork bomb paniced my kernel.

William Fletcher ultraviolet at epweb.co.za
Fri Jun 20 08:55:12 PDT 2003


Hi,

My machine just bombed when I did the following stupid command.
:(){:|:};:
Zsh chewed up everything on the machine...
I ran it knowing I'd probably have to reboot.

But, I hardly expected it to panic.

Or, was that normal?

Anyway, the following is some detail...
Please mail me if there is more I'm ment to do.

Thanks in advance :)

ultraviolet at tulip:~ %> uname -a
FreeBSD tulip.epweb.co.za 4.8-STABLE FreeBSD 4.8-STABLE #0: Wed Jun 11 10:09:55
SAST 2003     root at tulip.epweb.co.za:/usr/src/sys/compile/TULIP  i386

Panic message:
IdlePTD at phsyical address 0x0042a000
initial pcb at physical address 0x0036e460
panicstr: vm_map_entry_create: kernel resources exhausted
initial pcb at physical address 0x0036e460
panicstr: vm_map_entry_create: kernel resources exhausted
panic messages:
---
panic: vm_map_entry_create: kernel resources exhausted

syncing disks... 2 2
done
Uptime: 7d7h13m45s

(kgdb) where
#0  0xc01682aa in dumpsys ()
#1  0xc016807b in boot ()
#2  0xc01684a0 in poweroff_wait ()
#3  0xc02553f0 in vm_map_entry_create ()
#4  0xc02555e9 in vm_map_insert ()
#5  0xc0255810 in vm_map_find ()
#6  0xc0178cfb in pipespace ()
#7  0xc0178dd2 in pipe_create ()
#8  0xc0178b54 in pipe ()
#9  0xc02c21f5 in syscall2 ()
#10 0xc02b3875 in Xint0x80_syscall ()
#11 0x28081e1f in ?? ()
#12 0x2808135b in ?? ()
#13 0x28080deb in ?? ()
#14 0x28080b6e in ?? ()
#15 0x28086b39 in ?? ()
#16 0x28086964 in ?? ()
#17 0x280863fc in ?? ()
#18 0x2808458a in ?? ()
#19 0x28081e1f in ?? ()
#20 0x2808135b in ?? ()
#21 0x28080deb in ?? ()
#22 0x28080b6e in ?? ()
#23 0x28086b39 in ?? ()
---Type <return> to continue, or q <return> to quit---
#24 0x28086964 in ?? ()
#25 0x280863fc in ?? ()
#26 0x2808458a in ?? ()
#27 0x28081e1f in ?? ()
#28 0x2808135b in ?? ()
#29 0x28080deb in ?? ()
#30 0x28080b6e in ?? ()
#31 0x28086b39 in ?? ()
#32 0x28086964 in ?? ()
#33 0x280863fc in ?? ()
#34 0x2808458a in ?? ()
#35 0x28081e1f in ?? ()
#36 0x2808135b in ?? ()
#37 0x28080deb in ?? ()
#38 0x28080b6e in ?? ()
#39 0x28086b39 in ?? ()
#40 0x28086964 in ?? ()
#41 0x280863fc in ?? ()
#42 0x2808458a in ?? ()
Cannot access memory at address 0xbfbfd040.

-- 
William Fletcher (ultraviolet)		      Powered by http://www.FreeBSD.org/
IT Administrator, EPWeb networks.	          
http://www.epweb.co.za/				       
Tel: +27 (041) 395 6800					         
Fax: +27 (041) 395 6818	
Support: support at epweb.co.za

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