x_tables: duplicate underflow at hook 2 ================================================================================ UBSAN: Undefined behaviour in ./include/net/red.h:272:18 shift exponent 71 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 6483 Comm: sshd 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 __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_resolve_output+0x55a/0x950 net/core/neighbour.c:1374 neigh_output include/net/neighbour.h:501 [inline] ip6_finish_output2+0x1184/0x2370 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:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline] RIP: 0010:ktime_get_with_offset+0x2f3/0x3f0 kernel/time/timekeeping.c:799 Code: 00 48 c7 c0 e8 89 63 89 48 c1 e8 03 80 3c 28 00 0f 85 fb 00 00 00 48 83 3d e1 99 00 08 00 74 59 e8 c2 e2 0e 00 4c 89 ef 57 9d <0f> 1f 44 00 00 e9 98 fe ff ff e8 ae e2 0e 00 0f 0b 48 c7 c7 c0 24 RSP: 0018:ffff888089f8fe20 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8880a4c50380 RBX: 1ffffffff12c713c RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8162f00e RDI: 0000000000000293 RBP: dffffc0000000000 R08: 00000000cbbd884c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffffffff12c713e R13: 0000000000000293 R14: 0000000000000200 R15: ffffffff89764080 ktime_get_boottime include/linux/timekeeping.h:95 [inline] ktime_get_boottime_ts64 include/linux/timekeeping.h:161 [inline] posix_get_boottime+0x19/0x60 kernel/time/posix-timers.c:248 __do_sys_clock_gettime kernel/time/posix-timers.c:1063 [inline] __se_sys_clock_gettime+0x13e/0x250 kernel/time/posix-timers.c:1053 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7ffc45743b9e Code: 8b 15 46 c5 ff ff 48 89 16 48 8b 15 44 c5 ff ff 48 89 56 08 41 3b 04 24 0f 84 0f ff ff ff eb d7 49 63 fb b8 e4 00 00 00 0f 05 <48> 83 c4 10 41 5c 41 5d 5d c3 48 89 75 e0 e8 8f fd ff ff 48 8b 75 RSP: 002b:00007ffc456f2480 EFLAGS: 00000202 ORIG_RAX: 00000000000000e4 RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007ffc45743b9e RDX: 000055ce56d08310 RSI: 00007ffc456f24d0 RDI: 0000000000000007 RBP: 00007ffc456f24a0 R08: 00007ffc456f25e0 R09: 0000000000005d00 R10: 0000000000000008 R11: 0000000000000202 R12: 00007ffc45740080 R13: 00007ffc456f25bf R14: 000055ce55ac2be7 R15: 0000000000000003 ================================================================================ x_tables: duplicate underflow at hook 2 FAT-fs (loop4): Unrecognized mount option "io" or missing value FAT-fs (loop4): Unrecognized mount option "io" or missing value x_tables: duplicate underflow at hook 3 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=0 sclass=netlink_audit_socket pid=17228 comm=syz-executor.1