BUG: unable to handle page fault for address: 0000000707000070 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 16c15067 P4D 16c15067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.13.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:freelist_dereference mm/slub.c:282 [inline] RIP: 0010:get_freepointer mm/slub.c:289 [inline] RIP: 0010:get_freepointer_safe mm/slub.c:303 [inline] RIP: 0010:slab_alloc_node mm/slub.c:2882 [inline] RIP: 0010:slab_alloc mm/slub.c:2922 [inline] RIP: 0010:kmem_cache_alloc+0xfe/0x3a0 mm/slub.c:2927 Code: 39 f2 75 e7 48 8b 01 48 83 79 10 00 48 89 04 24 0f 84 4b 02 00 00 48 85 c0 0f 84 42 02 00 00 48 8b 7d 00 8b 4d 28 40 f6 c7 0f <48> 8b 1c 08 0f 85 4c 02 00 00 48 8d 4a 08 65 48 0f c7 0f 0f 94 c0 RSP: 0018:ffffc90000d263a8 EFLAGS: 00010246 RAX: 0000000707000000 RBX: 00000000000000e8 RCX: 0000000000000070 RDX: 00000000009a4e28 RSI: 00000000009a4e28 RDI: 000000000003ce30 RBP: ffff888012449640 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff87086bd3 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff87086bf0 R14: 0000000000000a20 R15: 0000000000000a20 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000707000070 CR3: 0000000017aab000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_clone+0x170/0x3c0 net/core/skbuff.c:1499 dev_queue_xmit_nit+0x3a5/0xa90 net/core/dev.c:2413 xmit_one net/core/dev.c:3649 [inline] dev_hard_start_xmit+0xad/0x920 net/core/dev.c:3670 __dev_queue_xmit+0x2133/0x3130 net/core/dev.c:4246 neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0x911/0x1700 net/ipv6/ip6_output.c:117 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline] __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161 ip6_finish_output+0x32/0x200 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215 dst_output include/net/dst.h:448 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip6_xmit+0x1277/0x1ea0 net/ipv6/ip6_output.c:320 inet6_csk_xmit+0x358/0x630 net/ipv6/inet6_connection_sock.c:135 __tcp_transmit_skb+0x1883/0x38f0 net/ipv4/tcp_output.c:1405 __tcp_send_ack.part.0+0x3d6/0x7a0 net/ipv4/tcp_output.c:3970 __tcp_send_ack net/ipv4/tcp_output.c:3976 [inline] tcp_send_ack+0x7d/0xa0 net/ipv4/tcp_output.c:3976 tcp_validate_incoming+0x13b4/0x1c40 net/ipv4/tcp_input.c:5598 tcp_rcv_established+0x543/0x1eb0 net/ipv4/tcp_input.c:5868 tcp_v6_do_rcv+0x41d/0x12b0 net/ipv6/tcp_ipv6.c:1502 tcp_v6_rcv+0x3004/0x36a0 net/ipv6/tcp_ipv6.c:1735 ip6_protocol_deliver_rcu+0x2e9/0x17f0 net/ipv6/ip6_input.c:422 ip6_input_finish+0x7f/0x160 net/ipv6/ip6_input.c:463 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:472 dst_input include/net/dst.h:458 [inline] ip6_rcv_finish+0x1d7/0x310 net/ipv6/ip6_input.c:76 ip_sabotage_in net/bridge/br_netfilter_hooks.c:873 [inline] ip_sabotage_in+0x206/0x270 net/bridge/br_netfilter_hooks.c:864 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:589 nf_hook.constprop.0+0x377/0x650 include/linux/netfilter.h:256 NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x9e/0x3c0 net/ipv6/ip6_input.c:297 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5459 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5573 netif_receive_skb_internal net/core/dev.c:5678 [inline] netif_receive_skb+0x157/0x8e0 net/core/dev.c:5737 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] br_pass_frame_up+0x2eb/0x3e0 net/bridge/br_input.c:61 br_handle_frame_finish+0x678/0x1680 net/bridge/br_input.c:169 br_nf_hook_thresh+0x2bd/0x350 net/bridge/br_netfilter_hooks.c:1025 br_nf_pre_routing_finish_ipv6+0x69e/0xd80 net/bridge/br_netfilter_ipv6.c:206 NF_HOOK include/linux/netfilter.h:301 [inline] br_nf_pre_routing_ipv6+0x42c/0x7a0 net/bridge/br_netfilter_ipv6.c:236 br_nf_pre_routing+0x1622/0x1e60 net/bridge/br_netfilter_hooks.c:505 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_bridge_pre net/bridge/br_input.c:225 [inline] br_handle_frame+0x980/0x1180 net/bridge/br_input.c:368 __netif_receive_skb_core+0xc4f/0x37f0 net/core/dev.c:5353 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5457 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5573 process_backlog+0x232/0x6c0 net/core/dev.c:6437 __napi_poll+0xaf/0x440 net/core/dev.c:6985 napi_poll net/core/dev.c:7052 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7139 __do_softirq+0x29b/0x9bd kernel/softirq.c:558 run_ksoftirqd kernel/softirq.c:920 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:912 smpboot_thread_fn+0x645/0x9c0 kernel/smpboot.c:164 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: CR2: 0000000707000070 ---[ end trace 8abf54a261023c30 ]--- RIP: 0010:freelist_dereference mm/slub.c:282 [inline] RIP: 0010:get_freepointer mm/slub.c:289 [inline] RIP: 0010:get_freepointer_safe mm/slub.c:303 [inline] RIP: 0010:slab_alloc_node mm/slub.c:2882 [inline] RIP: 0010:slab_alloc mm/slub.c:2922 [inline] RIP: 0010:kmem_cache_alloc+0xfe/0x3a0 mm/slub.c:2927 Code: 39 f2 75 e7 48 8b 01 48 83 79 10 00 48 89 04 24 0f 84 4b 02 00 00 48 85 c0 0f 84 42 02 00 00 48 8b 7d 00 8b 4d 28 40 f6 c7 0f <48> 8b 1c 08 0f 85 4c 02 00 00 48 8d 4a 08 65 48 0f c7 0f 0f 94 c0 RSP: 0018:ffffc90000d263a8 EFLAGS: 00010246 RAX: 0000000707000000 RBX: 00000000000000e8 RCX: 0000000000000070 RDX: 00000000009a4e28 RSI: 00000000009a4e28 RDI: 000000000003ce30 RBP: ffff888012449640 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff87086bd3 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff87086bf0 R14: 0000000000000a20 R15: 0000000000000a20 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000707000070 CR3: 0000000017aab000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400