unkillable program

Alexander V. Lukyanov (lav@alpha.netis.ru)
Fri, 10 Apr 1998 21:24:17 +0400

Experimenting with development glibc on alpha platform, I found a program
that misbehaves very strangely. It runs and cannot be killed or even
stopped. gdb still can attach to the program. The kernel spits exceptions
at setup_sigcontext.

gdb reports:
#0 0x12002b0bc in hup (sig=528484304) at signals.cc:162
#1 0x20000551660 in sigreturn ()
at ../sysdeps/unix/sysv/linux/alpha/rt_sigaction.S:58

hup function is signal handler.

I think it can be very inconvenient to have a running unkillable process.

Alexander.

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