================================================================================ UBSAN: shift-out-of-bounds in ./include/net/red.h:310:18 shift exponent 71 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 22 Comm: kworker/u4:1 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy9 ieee80211_iface_work 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:310 [inline] red_adaptative_algo include/net/red.h:442 [inline] red_adaptative_timer.cold+0x1bd/0x26c net/sched/sch_red.c:324 call_timer_fn+0x1a5/0x710 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x692/0xa80 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+0x2bc/0xa77 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+0x17f/0x200 kernel/softirq.c:420 irq_exit_rcu+0x5/0x20 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:628 RIP: 0010:console_unlock+0x807/0xc00 kernel/printk/printk.c:2509 Code: 60 a6 69 8b e8 1a 94 fd ff e8 95 3e 00 00 31 ff 4c 89 ee e8 eb 00 18 00 4d 85 ed 0f 85 3c 02 00 00 e8 ed f8 17 00 ff 34 24 9d <8b> 5c 24 34 31 ff 89 de e8 5c 00 18 00 85 db 0f 84 9a f9 ff ff e8 RSP: 0018:ffffc90000dcf800 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880115f9ac0 RSI: ffffffff815a2863 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8f4f97a7 R10: fffffbfff1e9f2f4 R11: 0000000000000000 R12: ffffffff84ad4c40 R13: 0000000000000200 R14: dffffc0000000000 R15: ffffc90000dcf860 vprintk_emit+0x1cb/0x430 kernel/printk/printk.c:2028 vprintk_func+0x8d/0x1e0 kernel/printk/printk_safe.c:393 printk+0xba/0xed kernel/printk/printk.c:2076 ieee80211_sta_create_ibss+0x156/0x300 net/mac80211/ibss.c:1347 ieee80211_sta_find_ibss net/mac80211/ibss.c:1484 [inline] ieee80211_ibss_work.cold+0x27c/0x5e3 net/mac80211/ibss.c:1708 ieee80211_iface_work+0x93e/0xa50 net/mac80211/iface.c:1445 process_one_work+0x98d/0x1630 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 ================================================================================