* [Bug uprobes/10519] New: on rawhide, uprobes recursive locking detected
@ 2009-08-13 16:35 dsmith at redhat dot com
2009-08-13 17:45 ` [Bug uprobes/10519] " fche at redhat dot com
0 siblings, 1 reply; 2+ messages in thread
From: dsmith at redhat dot com @ 2009-08-13 16:35 UTC (permalink / raw)
To: systemtap
On rawhide (kernel 2.6.31-0.125.rc5.git2.fc12.x86_64), I'm seeing the following
when running bz6850.exp:
---
Aug 13 11:28:33 dhcp-148 kernel: =============================================
Aug 13 11:28:33 dhcp-148 kernel: [ INFO: possible recursive locking detected ]
Aug 13 11:28:33 dhcp-148 kernel: 2.6.31-0.125.rc5.git2.fc12.x86_64 #1
Aug 13 11:28:33 dhcp-148 kernel: ---------------------------------------------
Aug 13 11:28:33 dhcp-148 kernel: bz6850/8413 is trying to acquire lock:
Aug 13 11:28:33 dhcp-148 kernel: (&uproc->rwsem){++++++}, at:
[<ffffffffa0644c89>] uprobe_mk_process+0x97/0x271 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel:
Aug 13 11:28:33 dhcp-148 kernel: but task is already holding lock:
Aug 13 11:28:33 dhcp-148 kernel: (&uproc->rwsem){++++++}, at:
[<ffffffffa06454ac>] uprobe_report_clone+0x50/0x512 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel:
Aug 13 11:28:33 dhcp-148 kernel: other info that might help us debug this:
Aug 13 11:28:33 dhcp-148 kernel: 2 locks held by bz6850/8413:
Aug 13 11:28:33 dhcp-148 kernel: #0: (uproc_mutex){+.+.+.}, at:
[<ffffffffa06454a4>] uprobe_report_clone+0x48/0x512 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel: #1: (&uproc->rwsem){++++++}, at:
[<ffffffffa06454ac>] uprobe_report_clone+0x50/0x512 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel:
Aug 13 11:28:33 dhcp-148 kernel: stack backtrace:
Aug 13 11:28:33 dhcp-148 kernel: Pid: 8413, comm: bz6850 Tainted: G W
2.6.31-0.125.rc5.git2.0.hsv.1.fc12.x86_64 #1
Aug 13 11:28:33 dhcp-148 kernel: Call Trace:
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81097d0b>] __lock_acquire+0xb84/0xc0e
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81097e83>] lock_acquire+0xee/0x12e
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffffa0644c89>] ?
uprobe_mk_process+0x97/0x271 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffffa0644c89>] ?
uprobe_mk_process+0x97/0x271 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff814fb7ca>] down_write+0x5b/0xa4
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffffa0644c89>] ?
uprobe_mk_process+0x97/0x271 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffffa0644c89>]
uprobe_mk_process+0x97/0x271 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffffa06454ac>] ?
uprobe_report_clone+0x50/0x512 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffffa0645674>]
uprobe_report_clone+0x218/0x512 [uprobes]
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff810b993a>] utrace_report_clone+0xa9/0x139
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81096566>] ?
trace_hardirqs_on_caller+0x139/0x175
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff8106411c>] do_fork+0x24c/0x378
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81277a36>] ? __up_read+0x89/0xaa
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81086597>] ? up_read+0x3a/0x55
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81013a75>] ? retint_swapgs+0x13/0x1b
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff810114d2>] sys_clone+0x3b/0x51
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff814fc4ad>] ?
trace_hardirqs_on_thunk+0x3a/0x3f
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81013373>] stub_clone+0x13/0x20
Aug 13 11:28:33 dhcp-148 kernel: [<ffffffff81012f42>] ?
system_call_fastpath+0x16/0x1b
----
--
Summary: on rawhide, uprobes recursive locking detected
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: uprobes
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: dsmith at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=10519
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* [Bug uprobes/10519] on rawhide, uprobes recursive locking detected
2009-08-13 16:35 [Bug uprobes/10519] New: on rawhide, uprobes recursive locking detected dsmith at redhat dot com
@ 2009-08-13 17:45 ` fche at redhat dot com
0 siblings, 0 replies; 2+ messages in thread
From: fche at redhat dot com @ 2009-08-13 17:45 UTC (permalink / raw)
To: systemtap
------- Additional Comments From fche at redhat dot com 2009-08-13 17:45 -------
*** This bug has been marked as a duplicate of 9828 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
http://sourceware.org/bugzilla/show_bug.cgi?id=10519
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You are the assignee for the bug, or are watching the assignee.
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2009-08-13 16:35 [Bug uprobes/10519] New: on rawhide, uprobes recursive locking detected dsmith at redhat dot com
2009-08-13 17:45 ` [Bug uprobes/10519] " fche at redhat dot com
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