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UBSAN: shift-out-of-bounds in kernel/sched/fair.c:7712:14
shift exponent 67 is too large for 64-bit type 'long unsigned int'
CPU: 2 PID: 9547 Comm: kworker/2:5 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: rcu_gp process_srcu
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327
 detach_tasks kernel/sched/fair.c:7712 [inline]
 load_balance.cold+0x1d/0x2e kernel/sched/fair.c:9641
 rebalance_domains+0x5cc/0xdb0 kernel/sched/fair.c:10029
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:preempt_latency_start kernel/sched/core.c:4711 [inline]
RIP: 0010:preempt_latency_start kernel/sched/core.c:4706 [inline]
RIP: 0010:preempt_count_add+0x9d/0x140 kernel/sched/core.c:4734
Code: 00 85 c0 75 35 65 48 8b 2c 25 00 f0 01 00 48 8d bd e8 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 81 00 00 00 48 89 9d e8 13 00 00 5b 5d c3 31 ff 31 db e8 1a
RSP: 0018:ffffc9000a1afba0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffffff83e5c808 RCX: 1ffffffff1fc58ec
RDX: 1ffff1100324f2dd RSI: 0000000000000001 RDI: ffff8880192796e8
RBP: ffff888019278300 R08: 0000000000000008 R09: ffffc9000256e987
R10: ffffffff83c7a5cf R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000002ced R14: 0000000000000005 R15: dffffc0000000000
 delay_tsc+0x38/0xb0 arch/x86/lib/delay.c:79
 try_check_zero+0x223/0x430 kernel/rcu/srcutree.c:707
 srcu_advance_state kernel/rcu/srcutree.c:1229 [inline]
 process_srcu+0x2f2/0xe90 kernel/rcu/srcutree.c:1327
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
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