------------[ cut here ]------------
task_rq(p) != rq
WARNING: kernel/sched/fair.c:7656 at hrtick_start_fair+0x196/0x1f0 kernel/sched/fair.c:7656, CPU#1: syz.0.72/5967
Modules linked in:
CPU: 1 UID: 0 PID: 5967 Comm: syz.0.72 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 c5 e5 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:ffffc90003e8f920 EFLAGS: 00010006
RAX: ffff8880b863ba40 RBX: ffff8880b873ba40 RCX: ffffffff8197c8ae
RDX: 0000000000000000 RSI: ffff888030585d00 RDI: ffff8880b873ba40
RBP: dffffc0000000000 R08: ffffffff8fcf250f R09: 1ffffffff1f9e4a1
R10: dffffc0000000000 R11: fffffbfff1f9e4a2 R12: dffffc0000000000
R13: 1ffff110170e78d6 R14: ffff888030585d00 R15: ffffffff8dc247d0
FS:  0000000000000000(0000) GS:ffff888125b6f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555754e64e8 CR3: 000000003f3e6000 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
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7409
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 rt_mutex_wake_up_q kernel/locking/rtmutex.c:583 [inline]
 rt_mutex_slowunlock+0x681/0x8b0 kernel/locking/rtmutex.c:1482
 write_unlock_irq include/linux/rwlock_rt.h:151 [inline]
 exit_notify kernel/exit.c:801 [inline]
 do_exit+0x154f/0x22c0 kernel/exit.c:1016
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1147
 __do_sys_exit_group kernel/exit.c:1158 [inline]
 __se_sys_exit_group kernel/exit.c:1156 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1156
 x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232
 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: 0033:0x7f50063fce59
Code: Unable to access opcode bytes at 0x7f50063fce2f.
RSP: 002b:00007ffc2174f9b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f50063fce59
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffc2174fa1c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000037
R13: 00000000000927c0 R14: 0000000000019dcc R15: 00007ffc2174fa70
 </TASK>