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linux/drivers/rpmsg
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Xiaolei Wang 229ce47cbf rpmsg: virtio: Free driver_override when rpmsg_remove() 
commit d5362c37e1 upstream.

Free driver_override when rpmsg_remove(), otherwise
the following memory leak will occur:

unreferenced object 0xffff0000d55d7080 (size 128):
  comm "kworker/u8:2", pid 56, jiffies 4294893188 (age 214.272s)
  hex dump (first 32 bytes):
    72 70 6d 73 67 5f 6e 73 00 00 00 00 00 00 00 00  rpmsg_ns........
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<000000009c94c9c1>] __kmem_cache_alloc_node+0x1f8/0x320
    [<000000002300d89b>] __kmalloc_node_track_caller+0x44/0x70
    [<00000000228a60c3>] kstrndup+0x4c/0x90
    [<0000000077158695>] driver_set_override+0xd0/0x164
    [<000000003e9c4ea5>] rpmsg_register_device_override+0x98/0x170
    [<000000001c0c89a8>] rpmsg_ns_register_device+0x24/0x30
    [<000000008bbf8fa2>] rpmsg_probe+0x2e0/0x3ec
    [<00000000e65a68df>] virtio_dev_probe+0x1c0/0x280
    [<00000000443331cc>] really_probe+0xbc/0x2dc
    [<00000000391064b1>] __driver_probe_device+0x78/0xe0
    [<00000000a41c9a5b>] driver_probe_device+0xd8/0x160
    [<000000009c3bd5df>] __device_attach_driver+0xb8/0x140
    [<0000000043cd7614>] bus_for_each_drv+0x7c/0xd4
    [<000000003b929a36>] __device_attach+0x9c/0x19c
    [<00000000a94e0ba8>] device_initial_probe+0x14/0x20
    [<000000003c999637>] bus_probe_device+0xa0/0xac

Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Fixes: b0b03b8119 ("rpmsg: Release rpmsg devices in backends")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231215020049.78750-1-xiaolei.wang@windriver.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-23 08:12:40 +01:00
..
Kconfig
Makefile
qcom_glink_native.c rpmsg: glink: Release driver_override 2023-11-08 11:22:19 +01:00
qcom_glink_native.h
qcom_glink_rpm.c
qcom_glink_smem.c
qcom_smd.c rpmsg: qcom: glink: replace strncpy() with strscpy_pad() 2022-10-26 13:19:17 +02:00
rpmsg_char.c rpmsg: char: Fix race between the release of rpmsg_eptdev and cdev 2022-02-08 18:23:07 +01:00
rpmsg_core.c rpmsg: Fix possible refcount leak in rpmsg_register_device_override() 2023-11-08 11:22:19 +01:00
rpmsg_internal.h rpmsg: Fix calling device_lock() on non-initialized device 2023-11-08 11:22:19 +01:00
virtio_rpmsg_bus.c rpmsg: virtio: Free driver_override when rpmsg_remove() 2024-02-23 08:12:40 +01:00