general protection fault, probably for non-canonical address 0xdffffc0020000069: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000100000348-0x000000010000034f] CPU: 0 PID: 8964 Comm: kworker/u4:0 Not tainted 5.9.0-rc2-next-20200828-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:ipvlan_hard_header+0x114/0x150 drivers/net/ipvlan/ipvlan_main.c:378 Code: 5c 41 5d 41 5e 41 5f c3 45 31 e4 eb e4 e8 74 7a b5 fc 48 8d bd 50 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 2d 4c 8b a5 50 03 00 00 e9 32 ff ff ff e8 a5 f5 f5 RSP: 0018:ffffc90000007958 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffff8880a0ef79a0 RDX: 0000000020000069 RSI: ffffffff84bf021c RDI: 000000010000034f RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000060 R10: 0000000000000000 R11: 0000000000000160 R12: 0000000000000000 R13: ffff88809dbe3b40 R14: ffff8880a0ef79a0 R15: 0000000000000060 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001590004 CR3: 00000000888fb000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dev_hard_header include/linux/netdevice.h:3065 [inline] neigh_connected_output+0x241/0x370 net/core/neighbour.c:1513 neigh_output include/net/neighbour.h:509 [inline] ip6_finish_output2+0x8b6/0x17b0 net/ipv6/ip6_output.c:117 __ip6_finish_output net/ipv6/ip6_output.c:143 [inline] __ip6_finish_output+0x447/0xab0 net/ipv6/ip6_output.c:128 ip6_finish_output+0x34/0x1f0 net/ipv6/ip6_output.c:153 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip6_output+0x1db/0x520 net/ipv6/ip6_output.c:176 dst_output include/net/dst.h:443 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] mld_sendpack+0x92a/0xdb0 net/ipv6/mcast.c:1679 mld_send_cr net/ipv6/mcast.c:1975 [inline] mld_ifc_timer_expire+0x60a/0xf10 net/ipv6/mcast.c:2474 call_timer_fn+0x1ac/0x760 kernel/time/timer.c:1413 expire_timers kernel/time/timer.c:1458 [inline] __run_timers.part.0+0x67c/0xaa0 kernel/time/timer.c:1755 __run_timers kernel/time/timer.c:1736 [inline] run_timer_softirq+0xae/0x1a0 kernel/time/timer.c:1768 __do_softirq+0x2de/0xa24 kernel/softirq.c:298 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x1f3/0x230 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:653 [inline] RIP: 0010:lock_acquire+0x27b/0xad0 kernel/locking/lockdep.c:5008 Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 f8 06 00 00 48 83 3d 6a d1 5b 08 00 0f 84 a6 05 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 10 48 c7 RSP: 0018:ffffc9000726fa38 EFLAGS: 00000286 RAX: 1ffffffff136c7d9 RBX: ffff88804a71c340 RCX: 00000000f5f6f8ea RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8c6a59e7 R10: fffffbfff18d4b3c R11: 1ffffffff138d4e8 R12: 0000000000000002 R13: ffffffff89c67640 R14: 0000000000000000 R15: ffff88804a71c340 rcu_lock_acquire include/linux/rcupdate.h:248 [inline] rcu_read_lock include/linux/rcupdate.h:641 [inline] inet_twsk_purge+0x112/0x7c0 net/ipv4/inet_timewait_sock.c:268 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:189 cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:603 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace f227c276c7e1b013 ]--- RIP: 0010:ipvlan_hard_header+0x114/0x150 drivers/net/ipvlan/ipvlan_main.c:378 Code: 5c 41 5d 41 5e 41 5f c3 45 31 e4 eb e4 e8 74 7a b5 fc 48 8d bd 50 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 2d 4c 8b a5 50 03 00 00 e9 32 ff ff ff e8 a5 f5 f5 RSP: 0018:ffffc90000007958 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffff8880a0ef79a0 RDX: 0000000020000069 RSI: ffffffff84bf021c RDI: 000000010000034f RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000060 R10: 0000000000000000 R11: 0000000000000160 R12: 0000000000000000 R13: ffff88809dbe3b40 R14: ffff8880a0ef79a0 R15: 0000000000000060 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001590004 CR3: 00000000888fb000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400