divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 2779 Comm: kworker/u4:6 Not tainted 5.7.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:tabledist.part.0+0x134/0x160 net/sched/sch_netem.c:333 Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 13 1b 29 fb 48 81 eb 00 10 00 00 eb aa e8 05 1b 29 fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 ba 69 67 fb e9 13 ff ff RSP: 0018:ffffc90000007508 EFLAGS: 00010246 RAX: 00000000318860b2 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff864a230b RDI: 0000000000000005 RBP: ffffffff80000000 R08: ffff88809f8de100 R09: ffffed1012f4cb46 R10: ffff888097a65a2f R11: ffffed1012f4cb45 R12: 0000000000000000 R13: 00000000318860b2 R14: ffff888097961330 R15: ffff888097961000 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33b35000 CR3: 0000000061a19000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tabledist net/sched/sch_netem.c:536 [inline] netem_enqueue+0x412/0x2da0 net/sched/sch_netem.c:536 __dev_xmit_skb net/core/dev.c:3778 [inline] __dev_queue_xmit+0x154a/0x30a0 net/core/dev.c:4089 neigh_resolve_output net/core/neighbour.c:1489 [inline] neigh_resolve_output+0x566/0x930 net/core/neighbour.c:1469 neigh_output include/net/neighbour.h:510 [inline] ip6_finish_output2+0x1091/0x25b0 net/ipv6/ip6_output.c:117 __ip6_finish_output+0x442/0xab0 net/ipv6/ip6_output.c:143 ip6_finish_output+0x34/0x1f0 net/ipv6/ip6_output.c:153 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x239/0x810 net/ipv6/ip6_output.c:176 dst_output include/net/dst.h:435 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ndisc_send_skb+0xf40/0x14b0 net/ipv6/ndisc.c:506 ndisc_send_rs+0x12e/0x6f0 net/ipv6/ndisc.c:700 addrconf_rs_timer+0x30f/0x6e0 net/ipv6/addrconf.c:3848 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1786 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x192/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:debug_lockdep_rcu_enabled.part.0+0x33/0x50 kernel/rcu/update.c:276 Code: df 53 65 48 8b 1c 25 00 1f 02 00 48 8d bb c4 08 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 <84> d2 75 0f 8b 93 c4 08 00 00 31 c0 5b 85 d2 0f 94 c0 c3 e8 95 ce RSP: 0018:ffffc900083bfb30 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff88809f8de100 RCX: 1ffffffff15156a2 RDX: 0000000000000000 RSI: ffffffff86987094 RDI: ffff88809f8de9c4 RBP: 00000000000893a7 R08: ffff88809f8de100 R09: ffffed1015cc7164 R10: ffff8880ae638b1b R11: ffffed1015cc7163 R12: 00000000000449d3 R13: ffffffff8a739aa0 R14: dffffc0000000000 R15: 0000000000000002 rcu_read_unlock include/linux/rcupdate.h:651 [inline] inet_twsk_purge+0x4c9/0x760 net/ipv4/inet_timewait_sock.c:299 ops_exit_list.isra.0+0x103/0x150 net/core/net_namespace.c:189 cleanup_net+0x511/0xa50 net/core/net_namespace.c:603 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 kthread+0x388/0x470 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 Modules linked in: ---[ end trace a42ae96ab8a1fe2f ]--- RIP: 0010:tabledist.part.0+0x134/0x160 net/sched/sch_netem.c:333 Code: 4c 89 e0 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 13 1b 29 fb 48 81 eb 00 10 00 00 eb aa e8 05 1b 29 fb 8d 4c 2d 00 44 89 e8 31 d2 f1 49 29 ec 49 01 d4 eb c7 48 89 df e8 ba 69 67 fb e9 13 ff ff RSP: 0018:ffffc90000007508 EFLAGS: 00010246 RAX: 00000000318860b2 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff864a230b RDI: 0000000000000005 RBP: ffffffff80000000 R08: ffff88809f8de100 R09: ffffed1012f4cb46 R10: ffff888097a65a2f R11: ffffed1012f4cb45 R12: 0000000000000000 R13: 00000000318860b2 R14: ffff888097961330 R15: ffff888097961000 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33b35000 CR3: 0000000061a19000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400