linux-stable.git/drivers/staging/android/ion, branch v5.3

staging: android: ion: Bail out upon SIGKILL when allocating memory.

2019-07-25T11:11:51+00:00

syzbot found that a thread can stall for minutes inside
ion_system_heap_allocate() after that thread was killed by SIGKILL [1].
Let's check for SIGKILL before doing memory allocation.

[1] https://syzkaller.appspot.com/bug?id=a0e3436829698d5824231251fad9d8e998f94f5e

Signed-off-by: Tetsuo Handa 
Cc: stable 
Reported-by: syzbot 
Acked-by: Laura Abbott 
Acked-by: Sumit Semwal 
Link: https://lore.kernel.org/r/d088f188-5f32-d8fc-b9a0-0b404f7501cc@I-love.SAKURA.ne.jp
Signed-off-by: Greg Kroah-Hartman

staging: android: ion: Remove file ion_chunk_heap.c

2019-07-03T16:25:07+00:00

Remove file ion_chunk_heap.c as its functions and definitions are not
used anywhere else.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta 
Acked-by: Laura Abbott 
Link: https://lore.kernel.org/r/20190703081842.22872-2-nishkadg.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: android: ion: Remove file ion_carveout_heap.c

2019-07-03T16:25:07+00:00

Remove file ion_carveout_heap.c as its functions and definitions are not
used anywhere.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta 
Acked-by: Laura Abbott 
Link: https://lore.kernel.org/r/20190703081842.22872-1-nishkadg.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: android: fix style problem

2019-06-15T18:54:27+00:00

checkpatch reported "WARNING: line over 80 characters".
This patch fixes it by aligning function arguments.

Signed-off-by: Saiyam Doshi 
Signed-off-by: Greg Kroah-Hartman

staging: add missing SPDX lines to Kconfig files

2019-04-03T09:10:15+00:00

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: ion: fix sys heap pool's gfp_flags

2019-02-19T10:12:08+00:00

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

Merge 5.0-rc4 into staging-next

2019-01-28T07:17:02+00:00

We need the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman

staging: android: ion: Support cpu access during dma_buf_detach

2019-01-22T10:38:09+00:00

Often userspace doesn't know when the kernel will be calling dma_buf_detach
on the buffer.
If userpace starts its CPU access at the same time as the sg list is being
freed it could end up accessing the sg list after it has been freed.

Thread A				Thread B
- DMA_BUF_IOCTL_SYNC IOCT
 - ion_dma_buf_begin_cpu_access
  - list_for_each_entry
					- ion_dma_buf_detatch
					 - free_duped_table
   - dma_sync_sg_for_cpu

Fix this by getting the ion_buffer lock before freeing the sg table memory.

Fixes: 2a55e7b5e544 ("staging: android: ion: Call dma_map_sg for syncing and mapping")
Signed-off-by: Liam Mark 
Acked-by: Laura Abbott 
Acked-by: Andrew F. Davis 
Signed-off-by: Greg Kroah-Hartman

staging: android: ion: Remove unused headers

2019-01-18T09:46:18+00:00

Various cleanups have removed the use of some headers in ION, remove
these here.

Signed-off-by: Andrew F. Davis 
Signed-off-by: Greg Kroah-Hartman

staging: android: ion: Remove base from ion_chunk_heap

2019-01-18T09:46:18+00:00

The base address is not used anywhere and tracked by the pool
allocator. No need to store this anymore.

Signed-off-by: Andrew F. Davis 
Signed-off-by: Greg Kroah-Hartman