================================================================================ UBSAN: shift-out-of-bounds in ./include/net/red.h:312:18 shift exponent 109 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 12387 Comm: apt-get Not tainted 5.11.0-rc7-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+0x107/0x163 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 red_calc_qavg_from_idle_time include/net/red.h:312 [inline] red_adaptative_algo include/net/red.h:444 [inline] red_adaptative_timer.cold+0x1bd/0x26c net/sched/sch_red.c:324 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1744 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu kernel/softirq.c:420 [inline] irq_exit_rcu+0x134/0x200 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0033:0x7fec8805e5a4 Code: 84 00 00 00 00 00 41 55 41 54 49 89 d5 55 53 41 bc 01 00 00 00 48 89 fb 48 83 ec 08 48 8b 07 48 89 06 48 8b 47 08 48 89 46 08 <48> 8b 47 10 48 89 46 10 48 8b 47 18 48 89 46 18 48 8b 07 48 89 02 RSP: 002b:00007ffe02446be0 EFLAGS: 00000202 RAX: 000055ebbaffd820 RBX: 00007ffe02446ce0 RCX: 0000000000000010 RDX: 00007ffe02446c50 RSI: 00007ffe02446c30 RDI: 00007ffe02446ce0 RBP: 00007ffe02446c30 R08: 0000000000000031 R09: 00007fec88010580 R10: 000055ebbaffd820 R11: 00007fec8774d060 R12: 0000000000000001 R13: 00007ffe02446c50 R14: 00007ffe02446c50 R15: 00000000ffffffff ================================================================================