syzbot

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task_rq(p) != rq
WARNING: kernel/sched/fair.c:7656 at hrtick_start_fair+0x196/0x1f0 kernel/sched/fair.c:7656, CPU#1: swapper/1/0
Modules linked in:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:hrtick_start_fair+0x196/0x1f0 kernel/sched/fair.c:7656
Code: 42 80 3c 20 00 74 08 4c 89 ff e8 85 f5 97 00 4d 39 37 0f 85 0c ff ff ff 48 89 df 5b 41 5c 41 5d 41 5e 41 5f e9 7b 64 fa ff 90 <0f> 0b 90 e9 d1 fe ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 82
RSP: 0018:ffffc900001e7ba0 EFLAGS: 00010006
RAX: ffff8880b863ba40 RBX: ffff8880b873ba40 RCX: ffffffff8197d8ae
RDX: 0000000000000000 RSI: ffff88803ac68000 RDI: ffff8880b873ba40
RBP: dffffc0000000000 R08: ffffffff8fcf390f R09: 1ffffffff1f9e721
R10: dffffc0000000000 R11: fffffbfff1f9e722 R12: dffffc0000000000
R13: 1ffff110170e78d6 R14: ffff88803ac68000 R15: ffffffff8dc257d0
FS:  0000000000000000(0000) GS:ffff888125b6b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555f270a38 CR3: 000000003ff2a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 set_next_task_fair+0xa68/0xce0 kernel/sched/fair.c:15065
 put_prev_set_next_task kernel/sched/sched.h:2770 [inline]
 pick_next_task kernel/sched/core.c:6442 [inline]
 __schedule+0x3e03/0x5550 kernel/sched/core.c:7143
 schedule_idle+0x51/0x90 kernel/sched/core.c:7348
 do_idle+0x4a6/0x540 kernel/sched/idle.c:384
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
 start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
 common_startup_64+0x13e/0x157
 </TASK>