dm table: check that a dm device doesn't reference itself

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If a DM device's table references itself, it will crash the kernel with an
infinite recursion.  Check for a self-reference in dm_get_device(). This
is a quick check, but it won't catch more complicated circular references.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

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Benjamin Marzinski 2023-01-31 15:22:57 -06:00 • committed by Mike Snitzer

parent efdd3c3375

commit d1c0e1587e

1 changed files with 2 additions and 0 deletions

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drivers/md/dm-table.c

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