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    SubjectRe: BUG: soft lockup on all kernels after 2.6.3x
    Hi,

    On Sat, Feb 09, 2013 at 07:07:53AM -0800, Eric Dumazet wrote:
    > >
    > > I used 2.6.2x kernel for a long time on my shared hosting and I
    > > didn't
    > > have any problems. Kernels worked well and server uptime was about
    > > 2-3
    > > years.
    > >
    > > ...
    > >
    > > it doesn't happen on an empty server, only on loaded ones.
    > > Unfortunately
    > > I don't know how to provoke such hanging artificially.
    > >

    > Your traces dont contain symbols, its quite hard to guess the issue.

    Well the server got high loaded and began to crash almost once a day.

    =====
    BUG: soft lockup - CPU#1 stuck for 23s! [httpd:21686]
    Call Trace:
    [<ffffffff8110bba5>] ? mntput_no_expire+0x25/0x170
    [<ffffffff810f9389>] ? path_lookupat+0x189/0x890
    [<ffffffff810f9b67>] ? filename_lookup.clone.39+0xd7/0xe0
    [<ffffffff810fc85c>] ? user_path_at_empty+0x5c/0xb0
    [<ffffffff8102b5f9>] ? __do_page_fault+0x1b9/0x480
    [<ffffffff810f146e>] ? vfs_fstatat+0x3e/0x90
    [<ffffffff810c54bf>] ? remove_vma+0x5f/0x70
    [<ffffffff810f168f>] ? sys_newstat+0x1f/0x50
    [<ffffffff814b09c2>] ? page_fault+0x22/0x30
    [<ffffffff814b0f49>] ? system_call_fastpath+0x18/0x1d
    =====

    There's a full trace in attachment.

    --
    BRGDS. Alexey Vlasov.


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