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| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2019-02-22 20:03:55 +0900 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-07-09 22:04:07 +0100 |
| commit | 5f2ec3b0fba54db9276f77f22c2fb9ceab6b1101 (patch) | |
| tree | 9a7dc96f96f1a3ace99241da72442c166fd429fc /drivers/tty/serial/of_serial.c | |
| parent | 283398ed504d1b5b1fd25766aca7375c84e410b2 (diff) | |
| download | linux-stable-5f2ec3b0fba54db9276f77f22c2fb9ceab6b1101.tar.gz linux-stable-5f2ec3b0fba54db9276f77f22c2fb9ceab6b1101.tar.bz2 linux-stable-5f2ec3b0fba54db9276f77f22c2fb9ceab6b1101.zip | |
staging: android: ashmem: Avoid range_alloc() allocation with ashmem_mutex held.
commit ecd182cbf4e107928077866399100228d2359c60 upstream.
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>
Reviewed-by: Joel Fernandes <joel@joelfernandes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/tty/serial/of_serial.c')
0 files changed, 0 insertions, 0 deletions