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[Bug runtime/2989] New: Systemtap generated code triggering locking correctness validator on x86_64
- From: "wcohen at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 1 Aug 2006 14:28:45 -0000
- Subject: [Bug runtime/2989] New: Systemtap generated code triggering locking correctness validator on x86_64
- Reply-to: sourceware-bugzilla at sourceware dot org
Systemtap generated code on x86_64 is triggering the locking
correctness validator
(http://people.redhat.com/mingo/lockdep-patches/lockdep-design.txt).
On the rawhide machine getting the following message in
/var/log/messages:
Aug 1 10:06:07 dhcp59-158 kernel: INFO: trying to register non-static key.
Aug 1 10:06:07 dhcp59-158 kernel: the code is fine but needs lockdep annotation.
Aug 1 10:06:07 dhcp59-158 kernel: turning off the locking correctness validator.
Aug 1 10:06:07 dhcp59-158 kernel:
Aug 1 10:06:07 dhcp59-158 kernel: Call Trace:
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff8026e269>] show_trace+0xaa/0x23d
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff8026e411>] dump_stack+0x15/0x17
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff802a788e>] __lock_acquire+0x135/0xa54
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff802a874e>] lock_acquire+0x4b/0x69
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff8026723b>] _spin_lock+0x25/0x31
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff885d714b>]
:stap_23370:_stp_init_time+0xaa/0xe3
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff885d80ed>]
:stap_23370:_stp_handle_start+0x11/0x55
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff885d81b8>]
:stap_23370:_stp_proc_write_cmd+0x87/0xd1
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff80217106>] vfs_write+0xcf/0x175
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff802179ee>] sys_write+0x47/0x70
Aug 1 10:06:07 dhcp59-158 kernel: [<ffffffff8025ff0e>] system_call+0x7e/0x83
Looking through the nightly testing stap_23370.c ran much earlier (about
4:30am). From the testsuite's systemap.log.
Running ./systemtap.base/add.exp ...
Pass 1: parsed user script and 40 library script(s) in 240usr/10sys/258real ms.
Pass 2: analyzed script: 2 probe(s), 1 function(s), 3 global(s) in
10usr/10sys/4real ms.
Pass 3: translated to C into "/tmp/stapF3LstW/stap_23370.c" in
50usr/90sys/154real ms.
Pass 4: compiled C into "stap_23370.ko" in 1880usr/510sys/2424real ms.
Pass 5: starting run.
systemtap starting probe
PASS: ./systemtap.base/add.stp startup
PASS: ./systemtap.base/add.stp load generation
systemtap ending probe
systemtap test success
PASS: ./systemtap.base/add.stp shutdown and output
Pass 5: run completed in 0usr/60sys/443real ms.
metric: ./systemtap.base/add.stp 240 10 258 10 10 4 50 90 154 1880 510
2424 0 60 443
testcase ./systemtap.base/add.exp completed in 4 seconds
--
Summary: Systemtap generated code triggering locking correctness
validator on x86_64
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: wcohen at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=2989
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