• Dave Kleikamp's avatar
    coredump: Ensure proper size of sparse core files · 4d22c75d
    Dave Kleikamp authored
    If the last section of a core file ends with an unmapped or zero page,
    the size of the file does not correspond with the last dump_skip() call.
    gdb complains that the file is truncated and can be confusing to users.
    
    After all of the vma sections are written, make sure that the file size
    is no smaller than the current file position.
    
    This problem can be demonstrated with gdb's bigcore testcase on the
    sparc architecture.
    Signed-off-by: default avatarDave Kleikamp <dave.kleikamp@oracle.com>
    Cc: Alexander Viro <viro@zeniv.linux.org.uk>
    Cc: linux-fsdevel@vger.kernel.org
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    4d22c75d
coredump.h 744 Bytes