ARM: Ensure do_cache_op takes mmap_sem

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do_cache_op() uses find_vma() to validate its arguments without holding
any locking.  This means that the VMA could vanish beneath us.  Fix
this by taking a read lock on mmap_sem.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Russell King 2009-09-28 11:41:51 +01:00

parent 90140c30a7

commit aa45ee8fc0

1 changed files with 4 additions and 1 deletions

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arch/arm/kernel/traps.c

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