------------[ cut here ]------------
Not in threaded context on PREEMPT_RT as expected
WARNING: kernel/sched/completion.c:76 at complete_all+0x174/0x218 kernel/sched/completion.c:76, CPU#0: syz.5.1655/11245
Modules linked in:
CPU: 0 UID: 0 PID: 11245 Comm: syz.5.1655 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : complete_all+0x174/0x218 kernel/sched/completion.c:76
lr : complete_all+0x174/0x218 kernel/sched/completion.c:76
sp : ffff8000956b7860
x29: ffff8000956b7860 x28: ffff700012ad6f18 x27: dfff800000000000
x26: ffff8000956b7ac8 x25: 0000000000000009 x24: 0000000000000001
x23: ffff8000956b78e0 x22: dfff800000000000 x21: ffff0000f26eba00
x20: ffff0000f26ec518 x19: ffff8000956b78e8 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000000
x11: 0000000000000000 x10: 0000000000080000 x9 : 65ab55407d4a5c00
x8 : 65ab55407d4a5c00 x7 : ffff80008048076c x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000802f45e0
x2 : 0000000100000000 x1 : ffff0000f26eba00 x0 : 0000000000000001
Call trace:
 complete_all+0x174/0x218 kernel/sched/completion.c:76 (P)
 affine_move_task kernel/sched/core.c:3049 [inline]
 __set_cpus_allowed_ptr_locked+0xb4c/0x10fc kernel/sched/core.c:3140
 __set_cpus_allowed_ptr+0x14c/0x1a4 kernel/sched/core.c:3172
 __sched_setaffinity+0x178/0x360 kernel/sched/syscalls.c:1159
 sched_setaffinity+0x32c/0x3d8 kernel/sched/syscalls.c:1237
 __do_sys_sched_setaffinity kernel/sched/syscalls.c:1273 [inline]
 __se_sys_sched_setaffinity kernel/sched/syscalls.c:1262 [inline]
 __arm64_sys_sched_setaffinity+0x13c/0x1b8 kernel/sched/syscalls.c:1262
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 232
hardirqs last  enabled at (231): [<ffff800086832420>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline]
hardirqs last  enabled at (231): [<ffff800086832420>] arm64_exit_to_kernel_mode+0x80/0x94 arch/arm64/kernel/entry-common.c:62
hardirqs last disabled at (232): [<ffff80008682e34c>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:425
softirqs last  enabled at (212): [<ffff80008030c57c>] softirq_handle_end kernel/softirq.c:468 [inline]
softirqs last  enabled at (212): [<ffff80008030c57c>] handle_softirqs+0xc28/0xd98 kernel/softirq.c:650
softirqs last disabled at (207): [<ffff8000800204b0>] __do_softirq+0x14/0x20 kernel/softirq.c:656
---[ end trace 0000000000000000 ]---