flags: 0x1fffc0000000000()
raw: 01fffc0000000000 ffff88812fffc878 ffffea00007b4408 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:546!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 14630 Comm: syz-executor4 Not tainted 5.0.0-rc5 #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:put_page_testzero include/linux/mm.h:546 [inline]
RIP: 0010:put_page include/linux/mm.h:992 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2835 [inline]
RIP: 0010:skb_release_data+0x5a5/0x7b0 net/core/skbuff.c:567
Code: f0 fe ff e9 b6 fb ff ff e8 38 9c 02 fc 4c 8d 63 ff e9 c8 fc ff ff e8 2a 9c 02 fc 48 c7 c6 e0 95 fe 87 4c 89 e7 e8 8b 0d 2b fc <0f> 0b e8 14 9c 02 fc 4d 8d 66 0e 48 b8 00 00 00 00 00 fc ff df 4c
RSP: 0018:ffff88803bf5f730 EFLAGS: 00010293
RAX: ffff888089f14680 RBX: ffffea00007b2834 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81985bf7 RDI: ffffea00007b2838
RBP: ffff88803bf5f798 R08: 000000000000003e R09: ffffed1015d03ef9
R10: ffffed1015d03ef8 R11: ffff8880ae81f7c7 R12: ffffea00007b2800
R13: ffff888051376c00 R14: 0000000000000001 R15: dffffc0000000000
FS:  0000000000b15940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000b137d0 CR3: 0000000008871000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 skb_release_all+0x4d/0x60 net/core/skbuff.c:627
 __kfree_skb+0x16/0x30 net/core/skbuff.c:641
 sk_wmem_free_skb include/net/sock.h:1462 [inline]
 tcp_write_queue_purge+0x253/0x790 net/ipv4/tcp.c:2524
 tcp_disconnect+0x402/0x14f0 net/ipv4/tcp.c:2563
 tcp_close+0xe37/0x10c0 net/ipv4/tcp.c:2365
 tls_sk_proto_close+0x3e7/0x760 net/tls/tls_main.c:303
 inet_release+0x105/0x1f0 net/ipv4/af_inet.c:428
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:473
 __sock_release+0xd3/0x250 net/socket.c:579
 sock_close+0x1b/0x30 net/socket.c:1141
 __fput+0x2df/0x8d0 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x14a/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x92c/0x2fd0 kernel/exit.c:875
 do_group_exit+0x135/0x370 kernel/exit.c:979
 get_signal+0x766/0x1750 kernel/signal.c:2517
 do_signal+0x87/0x1940 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x411d41
Code: Bad RIP value.
RSP: 002b:00007ffccea7bd60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000411d41
RDX: 0000000000000000 RSI: 0000000000740828 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000740820 R09: 00000000001ec381
R10: 00007ffccea7bc80 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00000000000009bb R15: 0000000000000004
Modules linked in:
---[ end trace fde64c041f0dd259 ]---
RIP: 0010:put_page_testzero include/linux/mm.h:546 [inline]
RIP: 0010:put_page include/linux/mm.h:992 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2835 [inline]
RIP: 0010:skb_release_data+0x5a5/0x7b0 net/core/skbuff.c:567
Code: f0 fe ff e9 b6 fb ff ff e8 38 9c 02 fc 4c 8d 63 ff e9 c8 fc ff ff e8 2a 9c 02 fc 48 c7 c6 e0 95 fe 87 4c 89 e7 e8 8b 0d 2b fc <0f> 0b e8 14 9c 02 fc 4d 8d 66 0e 48 b8 00 00 00 00 00 fc ff df 4c
RSP: 0018:ffff88803bf5f730 EFLAGS: 00010293
RAX: ffff888089f14680 RBX: ffffea00007b2834 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81985bf7 RDI: ffffea00007b2838
RBP: ffff88803bf5f798 R08: 000000000000003e R09: ffffed1015d03ef9
R10: ffffed1015d03ef8 R11: ffff8880ae81f7c7 R12: ffffea00007b2800
R13: ffff888051376c00 R14: 0000000000000001 R15: dffffc0000000000
FS:  0000000000b15940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000411d17 CR3: 0000000008871000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600