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[Bug uprobes/9828] New: A uprobe probepoint hit may result in a lockdep warning message
- From: "srikar at linux dot vnet dot ibm dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 9 Feb 2009 10:29:48 -0000
- Subject: [Bug uprobes/9828] New: A uprobe probepoint hit may result in a lockdep warning message
- Reply-to: sourceware-bugzilla at sourceware dot org
With CONFIG_LOCKDEP configured, the first time after boot that a uprobes
probepoint is hit, lockdep_sys_exit() reports:
kernel: [ BUG: lock held when returning to user space! ]
kernel: ------------------------------------------------
kernel: bash/6578 is leaving the kernel with locks still held!
kernel: 2 locks held by bash/6578:
kernel: #0: (&uproc->rwsem){----}, at: [<c0103641>]
uprobe_report_signal+0x1d1/0x7f3
kernel: #1: (&slot->rwsem){--..}, at: [<c0103db5>]
uprobe_find_insn_slot+0x152/0x1de
--
Summary: A uprobe probepoint hit may result in a lockdep warning
message
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: uprobes
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: srikar at linux dot vnet dot ibm dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=9828
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