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    SubjectRe: [block:for-3.14/core] kernel BUG at fs/bio.c:1748
    Date
    On Wed, 2014-01-08 at 12:40 -0800, Muthu Kumar wrote:
    > On Wed, Jan 8, 2014 at 12:16 PM, Chris Mason <clm@fb.com> wrote:
    > > On Wed, 2014-01-08 at 11:54 -0800, Muthu Kumar wrote:
    > >> Chris,
    > >>
    > >> [ 8.336061] WARNING: CPU: 0 PID: 0 at fs/bio.c:1778 bio_endio+0xbe/0x100()
    > >> [ 8.336062] bio_endio: bio for (unknown) without endio
    > >>
    > >> This is my recent change to avoid memory leak in bio_endio. But I
    > >> think the problem is higher up, most likely bio_endio is called twice
    > >> on the same bio (which was freed before).
    > >>
    > >
    > > I think these are just two separate problems. Lets ignore the WARN_ON
    > > for now.
    > >
    >
    > Not really... the BUG that is triggered:
    >
    > kernel BUG at fs/bio.c:523!
    >
    > It is in bio_put() (added to bio_endio() as part of recent change)
    > which gets an already freed bio.
    >

    Oh! I see. Let me try with that one reverted. Thanks!

    -chris



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