Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

remoteproc: core: Cleanup acquired resources when rproc_handle_resources() fails in rproc_attach()

When rproc->state = RPROC_DETACHED and rproc_attach() is used to attach to the remote processor, if rproc_handle_resources() returns a failure, the resources allocated by imx_rproc_prepare() should be released, otherwise the following memory leak will occur.

Since almost the same thing is done in imx_rproc_prepare() and rproc_resource_cleanup(), Function rproc_resource_cleanup() is able to deal with empty lists so it is better to fix the "goto" statements in rproc_attach(). replace the "unprepare_device" goto statement with "clean_up_resources" and get rid of the "unprepare_device" label.

unreferenced object 0xffff0000861c5d00 (size 128): comm "kworker/u12:3", pid 59, jiffies 4294893509 (age 149.220s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 02 88 00 00 00 00 00 00 10 00 00 00 00 00 ............ backtrace: [<00000000f949fe18>] slab_post_alloc_hook+0x98/0x37c [<00000000adbfb3e7>] __kmem_cache_alloc_node+0x138/0x2e0 [<00000000521c0345>] kmalloc_trace+0x40/0x158 [<000000004e330a49>] rproc_mem_entry_init+0x60/0xf8 [<000000002815755e>] imx_rproc_prepare+0xe0/0x180 [<0000000003f61b4e>] rproc_boot+0x2ec/0x528 [<00000000e7e994ac>] rproc_add+0x124/0x17c [<0000000048594076>] imx_rproc_probe+0x4ec/0x5d4 [<00000000efc298a1>] platform_probe+0x68/0xd8 [<0000…