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Date: Wed, 18 Oct 2006 07:31:00 -0000
From: "guij at cn dot ibm dot com" <sourceware-bugzilla@sourceware.org>
To: systemtap@sources.redhat.com
Message-ID: <20061018073138.3379.guij@cn.ibm.com>
Reply-To: sourceware-bugzilla@sourceware.org
Subject: [Bug runtime/3379] New: probe on "atomic_notifier_call_chain" crashes the system
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The command line is:
stap -e 'probe kernel.function("atomic_notifier_call_chain"){}'

If on 2.6.18.1/i686, the screen gets dark and the system is rebooted
immediately;

If on 2.6.18/ppc64, the system is crashed immediately and rebooted.
Several lines of error messages are shown on the console, but not
same every time.

Is there any workaround? or should we add it into the blacklist? 
Thanks.

Some examples of error messages on 2.6.18/ppc64:
  BUG: scheduling while atomic: swapper/0x00029032/0
  Unrecoverable exception 901 at 0
  cpu 0x0: Vector: 7265677368657265  at [c0000000058e3780]
  pc: c0000000058e3b20
or:
  cpu 0x3: Vector: 0  at [c00000000fcbd1d0]
  pc: 0000000000000000
  lr: 0000000000000000
  sp: c00000000fcbd450
  msr: 0
  current = 0xc00000007ff81800
  paca    = 0xc000000000569a00
  pid   = 0, comm = swapper
  WARNING: exception is not recoverable, can't continue
or:
  BUG: scheduling while atomic: swapper/0x00029032/0
  Unrecoverable exception 901 at 0
  cpu 0x0: Vector: 7265677368657265  at [c0000000058e3780]
  pc: c0000000058e3b20

-- 
           Summary: probe on "atomic_notifier_call_chain" crashes the system
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: runtime
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: guij at cn dot ibm dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3379

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