[Bug tapsets/4850] New: buildok/syscall.stp fails on ia64 2.6.23-rc1 kernel, missing sys_quotactl function

[Bug tapsets/4850] New: buildok/syscall.stp fails on ia64 2.6.23-rc1 kernel, missing sys_quotactl function

[wcohen at redhat dot com]

Can't probe sys_quotactl function on ia64 with 2.6.23-rc1 kernel

$ ../../install/bin/stap ../../src/testsuite/buildok/syscall.stp 
semantic error: no match for probe point while resolving probe point
kernel.function("sys_quotactl")
semantic error: no match for probe point while resolving probe point
kernel.function("sys_quotactl").return
Pass 2: analysis failed.  Try again with more '-v' (verbose) options.

-- 
           Summary: buildok/syscall.stp fails on ia64 2.6.23-rc1 kernel,
                    missing sys_quotactl function
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: tapsets
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: wcohen at redhat dot com
  GCC host triplet: ia64


http://sourceware.org/bugzilla/show_bug.cgi?id=4850

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[Bug tapsets/4850] buildok/syscall.stp fails on ia64 2.6.23-rc1 kernel, missing sys_quotactl function

[wcohen at redhat dot com]

------- Additional Comments From wcohen at redhat dot com  2007-07-27 14:43 -------
The sys_quotactl function is defined in the 2.6.23-rc1 kernel on the ia64

$ nm vmlinux |grep quotactl
a000000100237360 t dummy_quotactl
a000000100241100 t selinux_quotactl
a0000001000aca00 W sys32_quotactl
a0000001000aca00 W sys_quotactl

Comparing to 2.6.9-55.0.2.EL vmlinux

$ nm /usr/lib/debug/lib/modules/2.6.9-55.0.2.EL/vmlinux |grep quotactl
a000000100204c20 t dummy_quotactl
a00000010020eee0 t selinux_quotactl
a0000001001a1c40 T sys_quotactl
a0000001007653a0 D vfs_quotactl_ops

Does systemtap understand weak symbols? That seems to be the difference between
the two kernels.





-- 


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[Bug tapsets/4850] buildok/syscall.stp fails on ia64 2.6.23-rc1 kernel, missing sys_quotactl function

[wcohen at redhat dot com]

------- Additional Comments From wcohen at redhat dot com  2007-07-27 15:43 -------
The sys_quotactl is not implemented in the particular build of the 2.6.23-rc1
for ia64 because it failed build with CONFIG_QUOTA=y. With CONFIG_QUOTA unset
the sys_quotactl is unimplemented. There are a number of conditionally implement
systemcalls in kernel/sys_ni.c. systemtap tapsets will need to handle those call
gracefully.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=4850

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[Bug tapsets/4850] buildok/syscall.stp fails on ia64 2.6.23-rc1 kernel, missing sys_quotactl function

[hunt at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|systemtap at sources dot    |hunt at redhat dot com
                   |redhat dot com              |
             Status|NEW                         |ASSIGNED


http://sourceware.org/bugzilla/show_bug.cgi?id=4850

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