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scheduling while atomic

This document (7008484) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server 10 Service Pack 3


System is facing high performance issues, or does sometimes panic with similar call trace:

 scheduling while atomic: swapper/0x00000100/0

Call Trace: <ffffffff802ef31d>{__sched_text_start+125}
<ffffffff801a49c5>{aio_free_ring+66} <ffffffff801a4ba3>{__put_ioctx+76}
<ffffffff8010c216>{call_softirq+30} <ffffffff8010d1a4>{do_softirq+44}
<ffffffff8010d56e>{do_IRQ+64} <ffffffff8010b352>{ret_from_intr+0}


This bug has been fixed and the patch is included since kernel
To fix this issue, install the above kernel or a higher one.

Service Pack 4 also includes this patch.

Additional Information

Something went wrong below the IO completion handler (aio_complete). It is incorrect to perform ioctx freeing from aio_complete as it runs in atomic context.


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  • Document ID:7008484
  • Creation Date: 29-Apr-2011
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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