[   20.822911] ==================================================================
[   20.823131] BUG: KFENCE: use-after-free read in kmem_cache_rcu_uaf+0x1f4/0x468
[   20.823131] 
[   20.823336] Use-after-free read at 0x00000000a6896088 (in kfence-#94):
[   20.823445]  kmem_cache_rcu_uaf+0x1f4/0x468
[   20.823547]  kunit_try_run_case+0x170/0x3f0
[   20.823641]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   20.823740]  kthread+0x328/0x630
[   20.823816]  ret_from_fork+0x10/0x20
[   20.825496] 
[   20.825574] kfence-#94: 0x00000000a6896088-0x00000000f606a18e, size=200, cache=test_cache
[   20.825574] 
[   20.826009] allocated by task 214 on cpu 0 at 20.676610s (0.149384s ago):
[   20.826508]  kmem_cache_rcu_uaf+0x12c/0x468
[   20.826622]  kunit_try_run_case+0x170/0x3f0
[   20.826714]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   20.826813]  kthread+0x328/0x630
[   20.827287]  ret_from_fork+0x10/0x20
[   20.827557] 
[   20.827739] freed by task 214 on cpu 0 at 20.676752s (0.150974s ago):
[   20.828111]  kmem_cache_rcu_uaf+0x16c/0x468
[   20.828196]  kunit_try_run_case+0x170/0x3f0
[   20.828583]  kunit_generic_run_threadfn_adapter+0x88/0x100
[   20.828700]  kthread+0x328/0x630
[   20.828937]  ret_from_fork+0x10/0x20
[   20.829216] 
[   20.829533] CPU: 0 UID: 0 PID: 214 Comm: kunit_try_catch Tainted: G    B            N  6.16.0-rc5 #1 PREEMPT 
[   20.829741] Tainted: [B]=BAD_PAGE, [N]=TEST
[   20.829805] Hardware name: linux,dummy-virt (DT)
[   20.830198] ==================================================================