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Tetsuo Handa ecd182cbf4 staging: android: ashmem: Avoid range_alloc() allocation with ashmem_mutex held.

ashmem_pin() is calling range_shrink() without checking whether
range_alloc() succeeded. Also, doing memory allocation with ashmem_mutex
held should be avoided because ashmem_shrink_scan() tries to hold it.

Therefore, move memory allocation for range_alloc() to ashmem_pin_unpin()
and make range_alloc() not to fail.

This patch is mostly meant for backporting purpose for fuzz testing on
stable/distributor kernels, for there is a plan to remove this code in
near future.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: stable@vger.kernel.org
Reviewed-by: Joel Fernandes <joel@joelfernandes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-02-26 11:50:17 +01:00

ion

staging: android: ion: fix sys heap pool's gfp_flags

2019-02-19 11:12:08 +01:00

uapi

staging: android: ion: Add the GPL exception for syscalls

2019-02-14 10:47:20 +01:00

ashmem.c

staging: android: ashmem: Avoid range_alloc() allocation with ashmem_mutex held.

2019-02-26 11:50:17 +01:00

ashmem.h

staging: android: Clean up license identifiers