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    SubjectRe: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff
    On 04/22/2008 12:54 AM, Paul E. McKenney wrote:
    > On Tue, Apr 22, 2008 at 12:26:04AM +0200, Jiri Slaby wrote:
    >>> Having slub_debug enabled, tomorrow will be results, I guess...
    >> Sorry, one more entry:
    >>
    >> 00000000000000f0 dentry.d_op (Zdenek, offset ? around 136)

    Zdenek's is at offset 184.

    >> 00f0000000000000 dentry.d_hash.next (me, offset 24)
    >> ffff81f02003f16c dentry.d_name.name (me, offset 56)
    >> memory ORed by 000000f000000000
    >> fffff0002004c1b0 file.f_mapping (me, offset 176)
    >> memory hole, it was something like
    >> (ffff81002004c1b0 & ~00000f0000000000) | 0000f00000000000?
    >> ffffffffffffffff dentry.d_hash.next (Rafael, offset ? around 24)
    >> -1, ~0ULL
    >
    > Are these running with CONFIG_PREEMPT_RCU? Grasping at straws, but
    > there are a couple of patches that need to move from -rt to mainline,
    > but mostly related to SELinux. So if both PREEMPT_RCU and SELinux
    > were in use, we might be missing "rcu-various-fixups.patch" from:

    $ grep RCU .config
    CONFIG_CLASSIC_RCU=y
    # CONFIG_RCU_TORTURE_TEST is not set
    $ grep SECU .config
    # CONFIG_EXT4DEV_FS_SECURITY is not set
    # CONFIG_SECURITY is not set
    # CONFIG_SECURITY_FILE_CAPABILITIES is not set

    I guess not.

    BTW the corruption I mentioned earlier was char 'ð' and it's ('p' | 0xf0) in
    latin2. I think it was set_ðending_irq IIRC. Whatever, it won't help us.
    --
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