tty: Fix oops when scanning the polling list for kgdb

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Costantino Leandro found a bug in tty_find_polling_driver and provided a
patch that fixed the crash but not the underlying bug. This fixes the
underlying bug where the list walk corrupts the values it is using on a
match but then reuses them if the open fails.

Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Alan Cox 2009-06-11 12:46:41 +01:00 • committed by Linus Torvalds

parent 620df3c0a5

commit 5f0878acba

1 changed files with 7 additions and 6 deletions

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13

drivers/char/tty_io.c

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