I could imagine that this error potentially also affects other Thinkpad
models. Of course if they have a larger NVRAM it will take longer for
the dump files to fill it up. Maybe even weeks if only a few dump files
are generated with each restart. At least some newer models like the X1
Yoga seem to have a firmware option to clear the storage if full: See
Hardware Maintenance Manual page 45
https://download.lenovo.com/pccbbs/mobiles_pdf/tp_x1_carbon-
yoga_hmm_en.pdf#page=45&zoom=auto,-195,488

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https://bugs.launchpad.net/bugs/1953261

Title:
  kernel >= 5.13 BUG: kernel NULL pointer dereference

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