------------[ cut here ]------------
[  196.359385] Spawned test_ratelimit_stress_child 0
[  196.359424] WARNING: CPU: 0 PID: 1599 at lib/tests/test_ratelimit.c:87 test_ratelimit_stress_child+0x160/0x1b8
[  196.361682] Modules linked in:
[  196.362133] CPU: 0 UID: 0 PID: 1599 Comm: test_ratelimit_ Tainted: G    B D W        N  6.15.0-next-20250605 #1 PREEMPT 
[  196.362979] Spawned test_ratelimit_stress_child 1
[  196.365703] Tainted: [B]=BAD_PAGE, [D]=DIE, [W]=WARN, [N]=TEST
[  196.366551] Hardware name: linux,dummy-virt (DT)
[  196.367309] pstate: 62402009 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
[  196.367905] pc : test_ratelimit_stress_child+0x160/0x1b8
[  196.369580] lr : test_ratelimit_stress_child+0x30/0x1b8
[  196.371232] sp : ffff800089777d90
[  196.372168] x29: ffff800089777d90 x28: 0000000000000000 x27: 0000000000000000
[  196.373763] x26: 1ffe000019330041 x25: 0000000000000000 x24: 0000000000000004
[  196.375092] x23: fff00000c998020c x22: fff00000c9617980 x21: ffff9ca723b650f0
[  196.376741] x20: fff00000c9980200 x19: fff00000c9617980 x18: 0000000095da9fc2
[  196.377502] x17: 0000000000000001 x16: fff00000da444d28 x15: fff00000ff616b08
[  196.378166] x14: 00000000f1f1f1f1 x13: 1ffe00001b488989 x12: fffd80001b488849
[  196.379828] x11: 1ffe00001b488848 x10: fffd80001b488848 x9 : ffff9ca72620ee1c
[  196.381146] x8 : ffff800089777ae8 x7 : 0000000000000001 x6 : ffff800089777c00
[  196.382622] x5 : 0000000000000001 x4 : ffff9ca7285643e0 x3 : 0000000000000000
[  196.384725] x2 : 1ffe0000192c2f34 x1 : 0000000000000000 x0 : 0000000000000000
[  196.386681] Call trace:
[  196.387705]  test_ratelimit_stress_child+0x160/0x1b8 (P)
[  196.388822]  kthread+0x328/0x630
[  196.389285]  ret_from_fork+0x10/0x20
[  196.389778] ---[ end trace 0000000000000000 ]---