PTRACE_ATTACH: Operation not permitted
Too late?
It works for root under 2.2.4, it works without -f for a normal user
under 2.2.4, it works for everybody with or without -f on 2.2.3. For a
normal user doing -f on 2.2.4 it hangs shortly after fork and there is
no sign of the child in the trace.
1117 execve("/usr/local/bin/sgmltools", ["sgmltools", "-b", "oedg", "oedg.sgm"], [/* 35 vars */]) = 0
......
1117 pipe([5, 6]) = 0
1117 fork() = 1118
1117 close(6) = 0
1117 fstat(5, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0
1117 mmap(0, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4000c000
1117 read(5, 0x4000c000, 4096) = ? ERESTARTSYS (To be restarted)
1117 --- SIGCHLD (Child exited) ---
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