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UBSAN: shift-out-of-bounds in kernel/sched/fair.c:7712:14
shift exponent 124 is too large for 64-bit type 'long unsigned int'
CPU: 3 PID: 11341 Comm: syz-executor.2 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
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:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:205
Code: 1d ed d3 bc 7e 65 8b 05 e6 d3 bc 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 25 09 09 00 e8 a0 c8 34 00 fb 65 8b 05 c8 d3 bc 7e <85> c0 74 58 5b 5d c3 65 8b 05 f6 da bc 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0000:ffffc9000fb3fd70 EFLAGS: 00000202
RAX: 0000000080000000 RBX: 00000000fffffe01 RCX: 1ffffffff1b89e11
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff812a0ad3 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8179e4c8 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc9000fb3ff58 R15: 0000000000000004
 handle_signal arch/x86/kernel/signal.c:762 [inline]
 arch_do_signal_or_restart+0xc67/0x1eb0 arch/x86/kernel/signal.c:791
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208
 irqentry_exit_to_user_mode+0x5/0x40 kernel/entry/common.c:314
 exc_page_fault+0xc6/0x180 arch/x86/mm/fault.c:1534
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577
RIP: 0023:0x804c540
Code: e8 15 8f 04 00 83 c4 10 85 c0 75 12 83 c4 20 5b 5e 5f c3 8d 83 0c de f7 ff e8 4c fb ff ff 8d 83 1a de f7 ff e8 41 fb ff ff 90 <53> e8 fa eb ff ff 81 c3 ba fa 11 00 83 ec 08 8b 44 24 14 8b 40 0c
RSP: 002b:00000000f555e13c EFLAGS: 00000283
RAX: 000000000000000b RBX: 0000000000000000 RCX: 00000000f555e1cc
RDX: 00000000f555e14c RSI: 0000000000000007 RDI: 00000000080ea51d
RBP: 000000000819b030 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
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