I have installed systemtap following their Ubuntu tutorial. I took my kernel debug symbols following Ubuntu's wiki tutorial. Since I have SecureBoot enabled, I am "using" a compile server (hosted on my machine, same as the one on which I plan on executing the stap (localhost) ). Running -l "scripts" (e.g.: $ sudo stap -l 'syscall.*' --use-server=localhost) works fine, as only 3 of the 5 passes are needed.
The problem occurs when requesting a very simple probe: sudo stap -e 'probe begin {exit()}' --use-server=localhost. At pass 4 (compiling the generated C code), I get various errors:
In file included from /usr/share/systemtap/runtime/transport/procfs.c:13,
from /usr/share/systemtap/runtime/transport/transport.c:72,
from /usr/share/systemtap/runtime/linux/print.c:17,
from /usr/share/systemtap/runtime/print.c:17,
from /usr/share/systemtap/runtime/runtime_context.h:22,
from <server>/stap000000/stap_44621a3e20f38e1a82b1cb20ff27737b_949_src.c:49:
/usr/share/systemtap/runtime/proc_fs_compatibility.h:29:13: error: static declaration of ‘proc_set_user’ follows non-static declaration
29 | static void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid)
| ^~~~~~~~~~~~~
In file included from /usr/share/systemtap/runtime/linux/runtime.h:22,
from /usr/share/systemtap/runtime/runtime.h:26,
from <server>/stap000000/stap_44621a3e20f38e1a82b1cb20ff27737b_949_src.c:21:
./include/linux/proc_fs.h:112:13: note: previous declaration of ‘proc_set_user’ with type ‘void(struct proc_dir_entry *, kuid_t, kgid_t)’
112 | extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
| ^~~~~~~~~~~~~
In file included from /usr/share/systemtap/runtime/transport/procfs.c:13,
from /usr/share/systemtap/runtime/transport/transport.c:72,
from /usr/share/systemtap/runtime/linux/print.c:17,
from /usr/share/systemtap/runtime/print.c:17,
from /usr/share/systemtap/runtime/runtime_context.h:22,
from <server>/stap000000/stap_44621a3e20f38e1a82b1cb20ff27737b_949_src.c:49:
/usr/share/systemtap/runtime/proc_fs_compatibility.h: In function ‘proc_set_user’:
/usr/share/systemtap/runtime/proc_fs_compatibility.h:31:11: error: invalid use of undefined type ‘struct proc_dir_entry’
31 | de->uid = __kuid_val(uid);
| ^~
/usr/share/systemtap/runtime/proc_fs_compatibility.h:32:11: error: invalid use of undefined type ‘struct proc_dir_entry’
32 | de->gid = __kgid_val(gid);
| ^~
proc_remove
/usr/share/systemtap/runtime/proc_fs_compatibility.h:47:13: error: static declaration of ‘proc_remove’ follows non-static declaration
47 | static void proc_remove(struct proc_dir_entry *de)
| ^~~~~~~~~~~
In file included from /usr/share/systemtap/runtime/linux/runtime.h:22,
from /usr/share/systemtap/runtime/runtime.h:26,
from <server>/stap000000/stap_44621a3e20f38e1a82b1cb20ff27737b_949_src.c:21:
./include/linux/proc_fs.h:124:13: note: previous declaration of ‘proc_remove’ with type ‘void(struct proc_dir_entry *)’
124 | extern void proc_remove(struct proc_dir_entry *);
| ^~~~~~~~~~~
In file included from /usr/share/systemtap/runtime/transport/procfs.c:13,
from /usr/share/systemtap/runtime/transport/transport.c:72,
from /usr/share/systemtap/runtime/linux/print.c:17,
from /usr/share/systemtap/runtime/print.c:17,
from /usr/share/systemtap/runtime/runtime_context.h:22,
from <server>/stap000000/stap_44621a3e20f38e1a82b1cb20ff27737b_949_src.c:49:
/usr/share/systemtap/runtime/proc_fs_compatibility.h: In function ‘proc_remove’:
/usr/share/systemtap/runtime/proc_fs_compatibility.h:49:21: error: invalid use of undefined type ‘struct proc_dir_entry’
49 | if (de && de->subdir == NULL) {
| ^~
/usr/share/systemtap/runtime/proc_fs_compatibility.h:50:36: error: invalid use of undefined type ‘struct proc_dir_entry’
50 | if (atomic_read(&de->count) != LAST_ENTRY_COUNT)
| ^~
In file included from ./include/asm-generic/bug.h:22,
from ./arch/x86/include/asm/bug.h:87,
from ./include/linux/bug.h:5,
from ./include/linux/mmdebug.h:5,
from ./include/linux/gfp.h:5,
from /usr/share/systemtap/runtime/linux/runtime_defines.h:20,
from /usr/share/systemtap/runtime/runtime_defines.h:8,
from <server>/stap000000/stap_44621a3e20f38e1a82b1cb20ff27737b_949_src.c:12:
/usr/share/systemtap/runtime/proc_fs_compatibility.h:54:34: error: invalid use of undefined type ‘struct proc_dir_entry’
54 | de->name);
| ^~
./include/linux/printk.h:436:33: note: in definition of macro ‘printk_index_wrap’
436 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~~~~~~~~
/usr/share/systemtap/runtime/proc_fs_compatibility.h:51:25: note: in expansion of macro ‘printk’
51 | printk(KERN_ERR "Removal of %s from /proc"
| ^~~~~~
In file included from /usr/share/systemtap/runtime/transport/procfs.c:13,
from /usr/share/systemtap/runtime/transport/transport.c:72,
from /usr/share/systemtap/runtime/linux/print.c:17,
from /usr/share/systemtap/runtime/print.c:17,
from /usr/share/systemtap/runtime/runtime_context.h:22,
from <server>/stap000000/stap_44621a3e20f38e1a82b1cb20ff27737b_949_src.c:49:
/usr/share/systemtap/runtime/proc_fs_compatibility.h:55:37: error: invalid use of undefined type ‘struct proc_dir_entry’
55 | remove_proc_entry(de->name, de->parent);
| ^~
/usr/share/systemtap/runtime/proc_fs_compatibility.h:55:47: error: invalid use of undefined type ‘struct proc_dir_entry’
55 | remove_proc_entry(de->name, de->parent);
| ^~
The full error log, as well as more information, can be found in the output of running stap-report, hosted here.
A warning that might be of importance in the file (though I doubt it) is :
warning: the compiler differs from the one used to build the kernel
The kernel was built by: x86_64-linux-gnu-gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0
You are using: gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0
Given I have started my server with -B "-e CC=/usr/bin/x86_64-linux-gnu-gcc", I don't exactly know how to fix it without changing my whole system's CC environment variable.
It does not seem to be the same problem as this, as that bug seems to have been fixed.
I am under Linux kernel 5.19.0-32-generic
Would anyone know what causes the problem, or how to solve it?
Thanks in advance!
