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    CIFS: Fix a possible memory corruption during reconnect · 53e0e11e
    Pavel Shilovsky 提交于
    We can not unlock/lock cifs_tcp_ses_lock while walking through ses
    and tcon lists because it can corrupt list iterator pointers and
    a tcon structure can be released if we don't hold an extra reference.
    Fix it by moving a reconnect process to a separate delayed work
    and acquiring a reference to every tcon that needs to be reconnected.
    Also do not send an echo request on newly established connections.
    
    CC: Stable <stable@vger.kernel.org>
    Signed-off-by: NPavel Shilovsky <pshilov@microsoft.com>
    53e0e11e
smb2proto.h 8.7 KB