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SubjectRe: [PATCH 0/2] dma-mapping, remoteproc: Fix dma_mem leak after rproc_shutdown
On Fri, Apr 22, 2022 at 02:24:34PM +0800, Mark-PK Tsai wrote:
> Release dma coherent memory before rvdev is free in
> rproc_rvdev_release().
>
> Below is the kmemleak report:
> unreferenced object 0xffffff8051c1a980 (size 128):
> comm "sh", pid 4895, jiffies 4295026604 (age 15481.896s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<000000003a0f3ec0>] dma_declare_coherent_memory+0x44/0x11c
> [<00000000ad243164>] rproc_add_virtio_dev+0xb8/0x20c
> [<00000000d219c8e9>] rproc_vdev_do_start+0x18/0x24
> [<00000000e694b468>] rproc_start+0x22c/0x3e0
> [<000000000b938941>] rproc_boot+0x4a4/0x860
> [<000000003c4dc532>] state_store.52856+0x10c/0x1b8
> [<00000000df2297ac>] dev_attr_store+0x34/0x84
> [<0000000083a53bdb>] sysfs_kf_write+0x60/0xbc
> [<000000008ed830df>] kernfs_fop_write+0x198/0x458
> [<0000000072b9ad06>] __vfs_write+0x50/0x210
> [<00000000377d7469>] vfs_write+0xe4/0x1a8
> [<00000000c3fc594e>] ksys_write+0x78/0x144
> [<000000009aef6f4b>] __arm64_sys_write+0x1c/0x28
> [<0000000003496a98>] el0_svc_common+0xc8/0x22c
> [<00000000ea3fe7a3>] el0_svc_compat_handler+0x1c/0x28
> [<00000000d1a85a4e>] el0_svc_compat+0x8/0x24
>
> Mark-PK Tsai (2):
> dma-mapping: Add dma_release_coherent_memory to DMA API
> remoteproc: Fix dma_mem leak after rproc_shutdown
>
> drivers/remoteproc/remoteproc_core.c | 1 +
> include/linux/dma-map-ops.h | 3 +++
> kernel/dma/coherent.c | 10 ++++++++--
> 3 files changed, 12 insertions(+), 2 deletions(-)

Applied.

Thanks,
Mathieu

>
> --
> 2.18.0
>

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