IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready ================================================================================ UBSAN: Undefined behaviour in ./include/net/red.h:272:18 shift exponent 103 is too large for 64-bit type 'long unsigned int' CPU: 0 PID: 6538 Comm: syz-executor.2 Not tainted 4.19.152-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x22c/0x33e lib/dump_stack.c:118 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161 IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422 red_calc_qavg_from_idle_time include/net/red.h:272 [inline] red_calc_qavg include/net/red.h:313 [inline] red_enqueue+0x2064/0x2200 net/sched/sch_red.c:68 __dev_xmit_skb net/core/dev.c:3494 [inline] __dev_queue_xmit+0x14e1/0x2ec0 net/core/dev.c:3807 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip_finish_output2+0xc04/0x1640 net/ipv4/ip_output.c:230 ip_finish_output+0x88e/0xd80 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip_output+0x203/0x650 net/ipv4/ip_output.c:406 dst_output include/net/dst.h:455 [inline] ip_local_out+0xaf/0x170 net/ipv4/ip_output.c:125 iptunnel_xmit+0x63e/0xa30 net/ipv4/ip_tunnel_core.c:91 geneve_xmit_skb drivers/net/geneve.c:865 [inline] geneve_xmit+0xf46/0x2ac0 drivers/net/geneve.c:938 __netdev_start_xmit include/linux/netdevice.h:4333 [inline] netdev_start_xmit include/linux/netdevice.h:4347 [inline] xmit_one net/core/dev.c:3256 [inline] dev_hard_start_xmit+0x1a8/0x960 net/core/dev.c:3272 __dev_queue_xmit+0x276a/0x2ec0 net/core/dev.c:3838 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip6_finish_output2+0xe78/0x2370 net/ipv6/ip6_output.c:120 ip6_finish_output+0x610/0xcc0 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x205/0x7c0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:455 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] ndisc_send_skb+0xa6b/0x1860 net/ipv6/ndisc.c:491 ndisc_send_rs+0x131/0x6a0 net/ipv6/ndisc.c:685 addrconf_rs_timer+0x2d9/0x640 net/ipv6/addrconf.c:3834 call_timer_fn+0x177/0x760 kernel/time/timer.c:1338 expire_timers+0x243/0x500 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1703 [inline] run_timer_softirq+0x259/0x730 kernel/time/timer.c:1716 __do_softirq+0x27d/0xad2 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x22d/0x270 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x15f/0x5d0 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:__call_rcu.constprop.0+0x2a6/0x8a0 kernel/rcu/tree.c:3031 Code: 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 de 04 00 00 48 83 3d 6e 63 04 08 00 0f 84 15 03 00 00 48 8b 3c 24 57 9d <0f> 1f 44 00 00 48 83 c4 20 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f b6 RSP: 0018:ffff888088f67670 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12c713d RBX: ffff888046133808 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff8880ae22d110 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89741080 R13: ffff8880ae22d080 R14: ffff8880ae22d100 R15: ffff8880ae22d0b8 destroy_inode+0xb9/0x120 fs/inode.c:268 iput_final fs/inode.c:1555 [inline] iput+0x511/0x890 fs/inode.c:1581 dentry_unlink_inode+0x265/0x320 fs/dcache.c:374 __dentry_kill+0x3c0/0x640 fs/dcache.c:566 shrink_dentry_list+0x2cd/0x740 fs/dcache.c:1081 shrink_dcache_parent+0xdc/0x120 fs/dcache.c:1488 d_invalidate fs/dcache.c:1579 [inline] d_invalidate+0x13f/0x280 fs/dcache.c:1564 proc_flush_task_mnt fs/proc/base.c:3082 [inline] proc_flush_task+0x245/0x460 fs/proc/base.c:3152 release_task+0x1df/0x1510 kernel/exit.c:196 wait_task_zombie kernel/exit.c:1175 [inline] wait_consider_task+0x2fdd/0x3af0 kernel/exit.c:1402 do_wait_thread kernel/exit.c:1465 [inline] do_wait+0x4ac/0xad0 kernel/exit.c:1536 kernel_wait4+0x14c/0x260 kernel/exit.c:1678 __do_sys_wait4 kernel/exit.c:1690 [inline] __se_sys_wait4+0x149/0x160 kernel/exit.c:1686 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x417a4b Code: 54 55 41 89 d4 53 48 89 f5 89 fb 48 83 ec 10 e8 7b f9 ff ff 45 31 d2 41 89 c0 49 63 d4 48 89 ee 48 63 fb b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 19 44 89 c7 89 44 24 0c e8 b1 f9 ff ff 8b 44 RSP: 002b:00007ffe91ff75f0 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 0000000000417a4b RDX: 0000000040000001 RSI: 00007ffe91ff7650 RDI: ffffffffffffffff RBP: 00007ffe91ff7650 R08: 0000000000000000 R09: 00000000029d4940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000040000001 R13: 00007ffe91ff7650 R14: 0000000000031f76 R15: 00007ffe91ff7660 ================================================================================ device wlan1 entered promiscuous mode device wlan1 left promiscuous mode device wlan1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready