linux/drivers/staging/android, branch v5.2

staging: remove redundant 'default n' from Kconfig

2019-04-16T11:39:01Z

'default n' is the default value for any bool or tristate Kconfig setting so there is no need to write it explicitly. Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO is not set' for visible symbols") the Kconfig behavior is the same regardless of 'default n' being present or not: ... One side effect of (and the main motivation for) this change is making the following two definitions behave exactly the same: config FOO bool config FOO bool default n With this change, neither of these will generate a '# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied). That might make it clearer to people that a bare 'default n' is redundant. ... Signed-off-by: Bartlomiej Zolnierkiewicz Signed-off-by: Greg Kroah-Hartman

staging: android: vsoc: fix copy_from_user overrun

2019-04-16T11:31:58Z

The `np->permission' structure is smaller than the `np' structure but sizeof(*np) worth of data is copied in there. Fix the size passed to copy_from_user() to avoid overrun. Fixes: 3d2ec9dcd553 ("staging: Android: Add 'vsoc' driver for cuttlefish.") Signed-off-by: Vincent Stehlé Cc: Greg Kroah-Hartman Reviewed-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman

staging: add missing SPDX lines to Makefile files

2019-04-03T09:10:15Z

There are a few remaining drivers/staging/*/Makefile files that do not have SPDX identifiers in them. Add the correct GPL-2.0 identifier to them to make scanning tools happy. Reviewed-by: Mukesh Ojha Signed-off-by: Greg Kroah-Hartman

staging: add missing SPDX lines to Kconfig files

2019-04-03T09:10:15Z

There are a few remaining drivers/staging/*/Kconfig files that do not have SPDX identifiers in them. Add the correct GPL-2.0 identifier to them to make scanning tools happy. Signed-off-by: Greg Kroah-Hartman

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

2019-02-26T10:50:17Z

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 Cc: stable@vger.kernel.org Reviewed-by: Joel Fernandes Signed-off-by: Greg Kroah-Hartman

staging: android: ashmem: Don't call fallocate() with ashmem_mutex held.

2019-02-19T10:28:43Z

syzbot is hitting lockdep warnings [1][2][3]. This patch tries to fix the warning by eliminating ashmem_shrink_scan() => {shmem|vfs}_fallocate() sequence. [1] https://syzkaller.appspot.com/bug?id=87c399f6fa6955006080b24142e2ce7680295ad4 [2] https://syzkaller.appspot.com/bug?id=7ebea492de7521048355fc84210220e1038a7908 [3] https://syzkaller.appspot.com/bug?id=e02419c12131c24e2a957ea050c2ab6dcbbc3270 Reported-by: syzbot Reported-by: syzbot Reported-by: syzbot Signed-off-by: Tetsuo Handa Cc: stable@vger.kernel.org Acked-by: Joel Fernandes (Google) Signed-off-by: Greg Kroah-Hartman

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

2019-02-19T10:12:08Z

In the first loop, gfp_flags will be modified to high_order_gfp_flags, and there will be no chance to change back to low_order_gfp_flags. Fixes: e7f63771b60e ("ION: Sys_heap: Add cached pool to spead up cached buffer alloc") Signed-off-by: Qing Xia Cc: stable Signed-off-by: Jing Xia Reviewed-by: Yuming Han Reviewed-by: Zhaoyang Huang Reviewed-by: Orson Zhai Signed-off-by: Greg Kroah-Hartman

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

2019-02-14T09:47:20Z

Add "WITH Linux-syscall-note" to the license to not put GPL restrictions on user space programs using this header. Signed-off-by: Hyun Kwon Signed-off-by: Greg Kroah-Hartman

staging: android: formatting change in ashmem.c

2019-02-08T09:31:14Z

Resolved "Line over 80 characters" warning from checkpatch Signed-off-by: K Hodges Signed-off-by: Greg Kroah-Hartman

Merge 5.0-rc4 into staging-next

2019-01-28T07:17:02Z

We need the staging fixes in here as well. Signed-off-by: Greg Kroah-Hartman