================================================================================ UBSAN: shift-out-of-bounds in kernel/sched/fair.c:7712:14 shift exponent 70 is too large for 64-bit type 'unsigned long' CPU: 1 PID: 8374 Comm: syz-fuzzer Not tainted 5.12.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x202/0x31e lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:148 [inline] __ubsan_handle_shift_out_of_bounds+0x42e/0x4d0 lib/ubsan.c:327 detach_tasks+0xe07/0x1250 kernel/sched/fair.c:7712 load_balance+0x3e17/0x5f20 kernel/sched/fair.c:9641 rebalance_domains+0x551/0xab0 kernel/sched/fair.c:10029 __do_softirq+0x372/0x7a6 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x22c/0x260 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632 RIP: 0033:0x420d75 Code: 0f b6 3b 49 89 cb 89 f1 41 89 fc d3 ef 49 83 fb 08 74 0a 0f ba e7 04 0f 83 c2 00 00 00 41 0f a3 cc 73 b5 4b 8d 3c 0b 48 8b 3f <48> 85 ff 74 a9 49 89 fc 4c 29 cf 48 39 d7 72 9e 48 89 5c 24 78 4c RSP: 002b:00007ffe69ef3ba8 EFLAGS: 00000293 RAX: 0000000000203001 RBX: 00007f3198fdc342 RCX: 0000000000000000 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 000000000133dac0 RBP: 00007ffe69ef3c28 R08: 00007f3199044fff R09: 000000c0072e6840 R10: 000000c00001d698 R11: 0000000000000000 R12: 00000000000000d3 R13: 000000000184f420 R14: 0000000000000000 R15: 0000000000000000 ================================================================================