Debian: CVE-2022-49784: linux -- security update

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

perf/x86/amd/uncore: Fix memory leak for events array

When a CPU comes online, the per-CPU NB and LLC uncore contexts are
freed but not the events array within the context structure. This
causes a memory leak as identified by the kmemleak detector.

[...]
unreferenced object 0xffff8c5944b8e320 (size 32):
comm "swapper/0", pid 1, jiffies 4294670387 (age 151.072s)
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:
[] amd_uncore_cpu_up_prepare+0xaf/0x230
[] cpuhp_invoke_callback+0x2cf/0x470
[] cpuhp_issue_call+0x14d/0x170
[] __cpuhp_setup_state_cpuslocked+0x11e/0x330
[] __cpuhp_setup_state+0x6b/0x110
[] amd_uncore_init+0x260/0x321
[] do_one_initcall+0x3f/0x1f0
[] kernel_init_freeable+0x1ca/0x212
[] kernel_init+0x11/0x120
[] ret_from_fork+0x22/0x30
unreferenced object 0xffff8c5944b8dd40 (size 64):
comm "swapper/0", pid 1, jiffies 4294670387 (age 151.072s)
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:
[] amd_uncore_cpu_up_prepare+0x183/0x230
[] cpuhp_invoke_callback+0x2cf/0x470
[] cpuhp_issue_call+0x14d/0x170
[] __cpuhp_setup_state_cpuslocked+0x11e/0x330
[] __cpuhp_setup_state+0x6b/0x110
[] amd_uncore_init+0x260/0x321
[] do_one_initcall+0x3f/0x1f0
[] kernel_init_freeable+0x1ca/0x212
[] kernel_init+0x11/0x120
[] ret_from_fork+0x22/0x30
[...]

Fix the problem by freeing the events array before freeing the uncore
context.