Messages in this thread |  | | | Date | Tue, 30 Oct 2007 13:49:02 -0400 | | From | Mathieu Desnoyers <> | | Subject | kallsyms __print_symbol prints first weak symbol encountered |
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Hi,
I am try to see how I can use kallsyms to get the mapping syscall id -> syscall name by listing all the symbols corresponding to the function pointers present in the sys_call_table.
However, I just ran into what I consider an unusual behavior of kallsyms: when I list the sys_ni() (not implemented system calls), I get compat_sys_futex instead.
If I look at System.map, it's explained by this:
c0146630 W compat_sys_futex c0146630 W compat_sys_get_mempolicy c0146630 W compat_sys_get_robust_list c0146630 W compat_sys_ipc c0146630 W compat_sys_kexec_load c0146630 W compat_sys_keyctl ... c0146630 T sys_ni_syscall ... c0146630 W sys_timerfd
kallsyms returns the first symbol encountered, even though it is weak, when it should in fact return sys_ni_syscall.
Is it a concern for anyone else out there ? Would it make sense to fix it ?
Mathieu
-- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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