================================================================================ UBSAN: shift-out-of-bounds in ./include/net/red.h:312:18 shift exponent 71 is too large for 64-bit type 'long unsigned int' CPU: 0 PID: 8502 Comm: kworker/0:4 Not tainted 5.11.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events linkwatch_event 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:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629 RIP: 0010:console_unlock+0x7b6/0xbb0 kernel/printk/printk.c:2580 Code: 60 2c c8 8b e8 4b 98 fd ff e8 c6 3d 00 00 31 ff 4c 89 ee e8 5c a2 17 00 4d 85 ed 0f 85 3a 02 00 00 e8 5e 9a 17 00 ff 34 24 9d <8b> 5c 24 34 31 ff 89 de e8 cd a1 17 00 85 db 0f 84 eb f9 ff ff e8 RSP: 0018:ffffc90001587760 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801543d340 RSI: ffffffff815b2392 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8f8667a7 R10: fffffbfff1f0ccf4 R11: 0000000000000000 R12: ffffffff84aa0490 R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc900015877c0 vprintk_emit+0x189/0x490 kernel/printk/printk.c:2092 vprintk_func+0x8d/0x1e0 kernel/printk/printk_safe.c:393 printk+0xba/0xed kernel/printk/printk.c:2140 addrconf_notify.cold+0x29/0x6b net/ipv6/addrconf.c:3569 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2040 netdev_state_change net/core/dev.c:1452 [inline] netdev_state_change+0x100/0x130 net/core/dev.c:1445 linkwatch_do_dev+0x13f/0x180 net/core/link_watch.c:167 __linkwatch_run_queue+0x1ea/0x630 net/core/link_watch.c:212 linkwatch_event+0x4a/0x60 net/core/link_watch.c:251 process_one_work+0x98d/0x15f0 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:296 ================================================================================