I get the same bad bactktrace under 2.6.20-5:
$ gdb sleep
GNU gdb 6.6-debian
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This GDB was configured as "i486-linux-gnu"...
(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(gdb) run 300
Starting program: /bin/sleep 300
(no debugging symbols found)
Failed to read a valid object file image from memory.
(no debugging symbols found)
Program received signal SIGINT, Interrupt.
0xb7f83410 in ?? ()
(gdb) bt
#0 0xb7f83410 in ?? ()
#1 0xbfd75668 in ?? ()
#2 0xb7e1e68c in ?? ()
#3 0x00000000 in ?? ()
(gdb) quit
The program is running. Exit anyway? (y or n) y
$ uname -r
2.6.20-5-generic
** Changed in: linux-source-2.6.20 (Ubuntu)
Status: Fix Released => Unconfirmed
--
Unable to debug under 2.6.19: Failed to read a valid object file image from
memory
https://launchpad.net/bugs/74691
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