flags: 0x1fffc0000000000() raw: 01fffc0000000000 ffffea0001ac5408 ffff88812fffc878 0000000000000000 raw: 0000000000000000 0000000000000003 00000000ffffff7f 0000000000000000 page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0) ------------[ cut here ]------------ kernel BUG at include/linux/mm.h:547! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 17226 Comm: syz-executor.1 Not tainted 5.1.0+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:put_page_testzero include/linux/mm.h:547 [inline] RIP: 0010:put_page include/linux/mm.h:1006 [inline] RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2899 [inline] RIP: 0010:skb_release_data+0x5ac/0x7a0 net/core/skbuff.c:606 Code: 41 5d 41 5e 41 5f 5d c3 e8 31 b2 f3 fb 4c 8d 63 ff e9 b1 fc ff ff e8 23 b2 f3 fb 48 c7 c6 40 54 fe 87 4c 89 e7 e8 a4 80 1d fc <0f> 0b e8 0d b2 f3 fb 4d 8d 66 0e 48 b8 00 00 00 00 00 fc ff df 4c RSP: 0018:ffff8880ae8094e0 EFLAGS: 00010206 RAX: ffff888099798000 RBX: ffffea0002a22c34 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff819ab8f2 RDI: ffffea0002a22c38 RBP: ffff8880ae809548 R08: 000000000000003e R09: ffffed1015d06011 R10: ffffed1015d06010 R11: ffff8880ae830087 R12: ffffea0002a22c00 R13: ffff888098eb90c0 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000001956940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcabe8e2518 CR3: 0000000063219000 CR4: 00000000001406f0 Call Trace: skb_release_all+0x4d/0x60 net/core/skbuff.c:666 __kfree_skb+0x16/0x30 net/core/skbuff.c:680 sk_wmem_free_skb include/net/sock.h:1481 [inline] tcp_write_queue_purge+0x285/0x1000 net/ipv4/tcp.c:2526 tcp_reset+0x109/0x4b0 net/ipv4/tcp_input.c:4059 tcp_validate_incoming+0xa2d/0x1660 net/ipv4/tcp_input.c:5420 tcp_rcv_state_process+0xb57/0x4e05 net/ipv4/tcp_input.c:6121 tcp_v6_do_rcv+0x7da/0x12c0 net/ipv6/tcp_ipv6.c:1363 tcp_v6_rcv+0x2c7c/0x3580 net/ipv6/tcp_ipv6.c:1570 ip6_protocol_deliver_rcu+0x315/0x1720 net/ipv6/ip6_input.c:401 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:442 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:451 dst_input include/net/dst.h:439 [inline] ip6_rcv_finish+0x1e7/0x320 net/ipv6/ip6_input.c:80 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:276 __netif_receive_skb_one_core+0x12a/0x1f0 net/core/dev.c:4990 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5104 process_backlog+0x206/0x750 net/core/dev.c:5944 napi_poll net/core/dev.c:6367 [inline] net_rx_action+0x4fa/0x1070 net/core/dev.c:6433 __do_softirq+0x266/0x95a kernel/softirq.c:293 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1026 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:338 do_softirq kernel/softirq.c:330 [inline] __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:190 local_bh_enable include/linux/bottom_half.h:32 [inline] inet_csk_listen_stop+0x1e0/0x860 net/ipv4/inet_connection_sock.c:1002 tcp_close+0xd3e/0x10c0 net/ipv4/tcp.c:2335 inet_release+0x105/0x1f0 net/ipv4/af_inet.c:432 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:474 __sock_release+0xd3/0x2b0 net/socket.c:607 sock_close+0x1b/0x30 net/socket.c:1279 __fput+0x302/0x890 fs/file_table.c:279 ____fput+0x16/0x20 fs/file_table.c:312 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:276 [inline] do_syscall_64+0x57e/0x670 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x412b61 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 1a 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffef2cfb8e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000412b61 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000001 R08: 00000000dbf8c7ab R09: 00000000dbf8c7af R10: 00007ffef2cfb9c0 R11: 0000000000000293 R12: 000000000073c900 R13: 000000000073c900 R14: 00000000001172b3 R15: 000000000073bf0c Modules linked in: ---[ end trace 445b638f5f706097 ]--- RIP: 0010:put_page_testzero include/linux/mm.h:547 [inline] RIP: 0010:put_page include/linux/mm.h:1006 [inline] RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2899 [inline] RIP: 0010:skb_release_data+0x5ac/0x7a0 net/core/skbuff.c:606 Code: 41 5d 41 5e 41 5f 5d c3 e8 31 b2 f3 fb 4c 8d 63 ff e9 b1 fc ff ff e8 23 b2 f3 fb 48 c7 c6 40 54 fe 87 4c 89 e7 e8 a4 80 1d fc <0f> 0b e8 0d b2 f3 fb 4d 8d 66 0e 48 b8 00 00 00 00 00 fc ff df 4c RSP: 0018:ffff8880ae8094e0 EFLAGS: 00010206 RAX: ffff888099798000 RBX: ffffea0002a22c34 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff819ab8f2 RDI: ffffea0002a22c38 RBP: ffff8880ae809548 R08: 000000000000003e R09: ffffed1015d06011 R10: ffffed1015d06010 R11: ffff8880ae830087 R12: ffffea0002a22c00 R13: ffff888098eb90c0 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000001956940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcabe8e2518 CR3: 0000000063219000 CR4: 00000000001406f0