sysrq: Fix possible race with exiting task

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sysrq should grab the tasklist lock, otherwise calling force_sig() is
not safe, as it might race with exiting task, which ->sighand might be
set to NULL already.

Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Anton Vorontsov 2012-02-07 10:49:39 +04:00 • committed by Greg Kroah-Hartman

parent 6f56d0f436

commit e502babe0a

1 changed files with 2 additions and 0 deletions

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drivers/tty/sysrq.c

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