================================================================================ UBSAN: shift-out-of-bounds in kernel/sched/fair.c:7712:14 shift exponent 149 is too large for 64-bit type 'long unsigned int' CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.11.0-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+0xfa/0x151 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:395 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:343 run_ksoftirqd kernel/softirq.c:650 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:642 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 ================================================================================ Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.11.0-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+0xfa/0x151 lib/dump_stack.c:120 panic+0x306/0x73d kernel/panic.c:231 ubsan_epilogue+0x54/0x5a lib/ubsan.c:162 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:395 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:343 run_ksoftirqd kernel/softirq.c:650 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:642 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 ======================================================