------------[ cut here ]------------
task_rq(p) != rq
WARNING: kernel/sched/fair.c:7656 at hrtick_start_fair+0x196/0x1f0 kernel/sched/fair.c:7656, CPU#0: syz.3.20/5823
Modules linked in:
CPU: 0 UID: 0 PID: 5823 Comm: syz.3.20 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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:ffffc90005af7900 EFLAGS: 00010087
RAX: ffff8880b873ba40 RBX: ffff8880b863ba40 RCX: ffffffff8197d8ae
RDX: 0000000000000000 RSI: ffff888028731f00 RDI: ffff8880b863ba40
RBP: dffffc0000000000 R08: ffffffff8fcf390f R09: 1ffffffff1f9e721
R10: dffffc0000000000 R11: fffffbfff1f9e722 R12: dffffc0000000000
R13: 1ffff110170c78d6 R14: ffff888028731f00 R15: ffffffff8dc257d8
FS:  0000555557816500(0000) GS:ffff888125a6b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823bfcd000 CR3: 0000000041354000 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_loop kernel/sched/core.c:7307 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7322
 do_nanosleep+0x287/0x730 kernel/time/hrtimer.c:2399
 hrtimer_nanosleep+0x217/0x450 kernel/time/hrtimer.c:2445
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1406 [inline]
 __se_sys_clock_nanosleep+0x35b/0x3b0 kernel/time/posix-timers.c:1383
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f788441d68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fff0c230ad8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000555557816500 RCX: 00007f788441d68e
RDX: 00007fff0c230b30 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f78846d7da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000001943a
R13: 00007f78846d609c R14: 0000000000019193 R15: 00007f78846d6090
 </TASK>