** Description changed:
- Systemtap doesn't work on xenial, due to changes in struct module in the
- kernel:
+ [Impact]
- ubuntu@xenial:~$ sudo stap test.stap
+ Attempting to use systemtap on xenial with the 4.4 kernel results in:
+
+ ubuntu@xenial:~$ sudo stap test.stap
In file included from /usr/share/systemtap/runtime/print.c:17:0,
- from /usr/share/systemtap/runtime/runtime_context.h:22,
- from
/tmp/stapxvNfgC/stap_2e27f5927a5796b18cb7b3c2abd24ec4_812_src.c:50:
+ from /usr/share/systemtap/runtime/runtime_context.h:22,
+ from
/tmp/stapxvNfgC/stap_2e27f5927a5796b18cb7b3c2abd24ec4_812_src.c:50:
/usr/share/systemtap/runtime/linux/print.c: In function
‘_stp_print_kernel_info’:
/usr/share/systemtap/runtime/linux/print.c:242:20: error: ‘struct module’ has
no member named ‘module_core’
- THIS_MODULE->module_core,
- ^
+ THIS_MODULE->module_core,
+ ^
/usr/share/systemtap/runtime/linux/print.c:243:37: error: ‘struct module’ has
no member named ‘core_size’
- (unsigned long) (THIS_MODULE->core_size -
THIS_MODULE->core_text_size)/1024,
- ^
+ (unsigned long) (THIS_MODULE->core_size -
THIS_MODULE->core_text_size)/1024,
+ ^
/usr/share/systemtap/runtime/linux/print.c:243:62: error: ‘struct module’ has
no member named ‘core_text_size’
- (unsigned long) (THIS_MODULE->core_size -
THIS_MODULE->core_text_size)/1024,
- ^
+ (unsigned long) (THIS_MODULE->core_size -
THIS_MODULE->core_text_size)/1024,
+ ^
/usr/share/systemtap/runtime/linux/print.c:244:44: error: ‘struct module’ has
no member named ‘core_text_size’
- (unsigned long) (THIS_MODULE->core_text_size)/1024,
- ^
+ (unsigned long) (THIS_MODULE->core_text_size)/1024,
+ ^
scripts/Makefile.build:258: recipe for target
'/tmp/stapxvNfgC/stap_2e27f5927a5796b18cb7b3c2abd24ec4_812_src.o' failed
make[1]: ***
[/tmp/stapxvNfgC/stap_2e27f5927a5796b18cb7b3c2abd24ec4_812_src.o] Error 1
Makefile:1396: recipe for target '_module_/tmp/stapxvNfgC' failed
make: *** [_module_/tmp/stapxvNfgC] Error 2
WARNING: kbuild exited with status: 2
Pass 4: compilation failed. [man error::pass4]
Tip: /usr/share/doc/systemtap/README.Debian should help you get started.
+
+ [Test Case]
+
+ on a xenial system with the 4.4 kernel installed, and systemtap and
+ kernel dbgsyms installed, simply create a dummy stap script and try to
+ run it, e.g.:
+
+ $ cat test.stap
+ #!/usr/bin/stap
+
+ probe begin {
+ println("hello")
+ }
+ $ sudo stap test.stap
+
+ the above compilation failure will result.
+
+ [Regression Potential]
+
+ The commit updates stap to use the kernel module header correctly based
+ on a small test program, so there should be no regression, but possible
+ regression is breaking stap on the xenial 4.3 kernel.
+
+ [Other Info]
+
+ this requires upstream stap commit
+ 3f040971e7efb4d323fcb63d83b4337f355c60db
** Tags removed: bot-stop-nagging
** Tags added: sts-sru
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https://bugs.launchpad.net/bugs/1557673
Title:
systemtap does not work on xenial, struct module changes
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