CVE-2022-50376

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

orangefs: Fix kmemleak in orangefs_{kernel,client}_debug_init()

When insert and remove the orangefs module, there are memory leaked

as below:

unreferenced object 0xffff88816b0cc000 (size 2048):

comm "insmod", pid 783, jiffies 4294813439 (age 65.512s)

hex dump (first 32 bytes):

6e 6f 6e 65 0a 00 00 00 00 00 00 00 00 00 00 00 none............

00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................

backtrace:

[<0000000031ab7788>] kmalloc_trace+0x27/0xa0

[<000000005b405fee>] orangefs_debugfs_init.cold+0xaf/0x17f

[<00000000e5a0085b>] 0xffffffffa02780f9

[<000000004232d9f7>] do_one_initcall+0x87/0x2a0

[<0000000054f22384>] do_init_module+0xdf/0x320

[<000000003263bdea>] load_module+0x2f98/0x3330

[<0000000052cd4153>] __do_sys_finit_module+0x113/0x1b0

[<00000000250ae02b>] do_syscall_64+0x35/0x80

[<00000000f11c03c7>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

Use the golbal variable as the buffer rather than dynamic allocate to

slove the problem.