sched: panic on corrupted stack end

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commit 29d6455178 upstream.

Until now, hitting this BUG_ON caused a recursive oops (because oops
handling involves do_exit(), which calls into the scheduler, which in
turn raises an oops), which caused stuff below the stack to be
overwritten until a panic happened (e.g.  via an oops in interrupt
context, caused by the overwritten CPU index in the thread_info).

Just panic directly.

Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Jann Horn 2016-06-01 11:55:07 +02:00 • committed by Greg Kroah-Hartman

parent 9beb96b344

commit c08b1a593a

1 changed files with 2 additions and 1 deletions

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kernel/sched/core.c

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