[Bug 1832741] Re: Systemtap regression on Linux 5.2.0-rc4+

[Frank Ch. Eigler]

> Am I running 3.2 or 4.2 when I do sudo stap <script>?

Run "sudo stap -v" to find out.

> Plus I am not running ubuntu. I am running Oracle Linux Server 7.5

Then ubuntu launchpad would not be the appropriate venue.
See instead the upstream systemtap bugzilla, or Oracle's bug tracking system.

By the way, fedora rawhide 5.2.0-rc3 works fine with git systemtap.

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https://bugs.launchpad.net/bugs/1832741

Title:
  Systemtap regression on Linux 5.2.0-rc4+

Status in systemtap package in Ubuntu:
  New

Bug description:
  System tap breaks when I run the following script in Linux 5.2.0-rc4+.
  It does not break on stable kernels like 4.4.0-148-generic.

  Script:
  file.stp:

  global stats

  probe kernel.function("do_try_to_free_pages").return {
     order = @entry($sc->order)
     time = cpu_clock_ns(cpu()) - @entry(cpu_clock_ns(cpu()))
     stats["do_try_to_free_pages", execname(), order] <<< time
  }

  probe kernel.function("try_to_compact_pages").return {
     order = @entry($order)
     time = cpu_clock_ns(cpu()) - @entry(cpu_clock_ns(cpu()))
     stats["try_to_compact_pages", execname(), order] <<< time
  }

  probe end {
     foreach([f,en,order+] in stats) {
          printf("%s:%s: order %d allocation latency - ", f,en,order)
          printf("max/avg/min/count: %d/%d/%d/%d\n", @max(stats[f,en,order]), at avg(stats[f,en,order]), at min(stats[f,en,order]), at count(stats[f,en,order]))
    }
  }

  Command to execute: sudo stap -v file.stp

  Output:
  Pass 1: parsed user script and 481 library scripts using 252924virt/58296res/7128shr/51680data kb, in 440usr/10sys/441real ms.
  Pass 2: analyzed script: 5 probes, 6 functions, 4 embeds, 9 globals using 466196virt/273184res/8752shr/264952data kb, in 1670usr/430sys/2099real ms.
  Pass 3: translated to C into "/tmp/staphdai7v/stap_9a6fd3c9a6892aa42943c7a32261941b_9080_src.c" using 466196virt/273376res/8944shr/264952data kb, in 10usr/0sys/7real ms.
  In file included from <command-line>:0:0:
  ././include/linux/compiler_types.h:217:1: fatal error: /tmp/staphdai7v/stapconf_ab4ca97dc0436c6c48e82f11816eb32e_660.h: No such file or directory
   #endif /* __LINUX_COMPILER_TYPES_H */
   ^
  In file included from <command-line>:0:0:
  ././include/linux/compiler_types.h:217:1: fatal error: /tmp/staphdai7v/stapconf_ab4ca97dc0436c6c48e82f11816eb32e_660.h: No such file or directory
   #endif /* __LINUX_COMPILER_TYPES_H */
   ^
  compilation terminated.
  compilation terminated.
  make[2]: *** [/tmp/staphdai7v/stap_9a6fd3c9a6892aa42943c7a32261941b_9080_src.o] Error 1
  make[2]: *** Waiting for unfinished jobs....
  make[2]: *** [/tmp/staphdai7v/stap_9a6fd3c9a6892aa42943c7a32261941b_9080_aux_0.o] Error 1
  make[1]: *** [_module_/tmp/staphdai7v] Error 2
  make: *** [sub-make] Error 2
  WARNING: kbuild exited with status: 2
  Pass 4: compiled C into "stap_9a6fd3c9a6892aa42943c7a32261941b_9080.ko" in 300usr/170sys/454real ms.
  Pass 4: compilation failed.  [man error::pass4]

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