flags: 0x1fffc0000000000()
raw: 01fffc0000000000 dead000000000100 dead000000000200 0000000000000000
raw: 0000000000000000 0000000000000000 00000001fffffdff ffff888068208600
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: 1 PID: 17691 Comm: syz-executor.0 Not tainted 5.0.0+ #108
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:993 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2891 [inline]
RIP: 0010:skb_release_data+0x5ac/0x7a0 net/core/skbuff.c:571
Code: 41 5d 41 5e 41 5f 5d c3 e8 61 c5 fb fb 4c 8d 63 ff e9 b1 fc ff ff e8 53 c5 fb fb 48 c7 c6 40 8a fc 87 4c 89 e7 e8 f4 23 25 fc <0f> 0b e8 3d c5 fb fb 4d 8d 66 0e 48 b8 00 00 00 00 00 fc ff df 4c
RSP: 0018:ffff88806c74f708 EFLAGS: 00010293
RAX: ffff888037a00540 RBX: ffffea0000a23434 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8199d362 RDI: ffffea0000a23438
RBP: ffff88806c74f770 R08: 000000000000003e R09: ffffed1015d05011
R10: ffffed1015d05010 R11: ffff8880ae828087 R12: ffffea0000a23400
R13: ffff888095892300 R14: 0000000000000001 R15: dffffc0000000000
FS:  00007ffb6de93700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000008b771000 CR4: 00000000001406e0
Call Trace:
 skb_release_all+0x4d/0x60 net/core/skbuff.c:631
 __kfree_skb+0x16/0x30 net/core/skbuff.c:645
 tcp_write_queue_purge+0x5ec/0xa60 net/ipv4/tcp.c:2548
 tcp_disconnect+0x468/0x1910 net/ipv4/tcp.c:2592
 tcp_close+0xe37/0x10c0 net/ipv4/tcp.c:2382
 tls_sk_proto_close+0x40d/0x7a0 net/tls/tls_main.c:292
 inet_release+0x105/0x1f0 net/ipv4/af_inet.c:432
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:473
 __sock_release+0xd3/0x2b0 net/socket.c:599
 sock_close+0x1b/0x30 net/socket.c:1247
 __fput+0x2e5/0x8d0 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+0x90a/0x2fa0 kernel/exit.c:876
 do_group_exit+0x135/0x370 kernel/exit.c:980
 get_signal+0x399/0x1d50 kernel/signal.c:2575
 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: 0033:0x458209
Code: Bad RIP value.
RSP: 002b:00007ffb6de92cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000073bf08 RCX: 0000000000458209
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000073bf08
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000073bf0c
R13: 00007fff6bd8612f R14: 00007ffb6de939c0 R15: 000000000073bf0c
Modules linked in:
---[ end trace 6f9cb191ed6e1eab ]---
RIP: 0010:put_page_testzero include/linux/mm.h:547 [inline]
RIP: 0010:put_page include/linux/mm.h:993 [inline]
RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2891 [inline]
RIP: 0010:skb_release_data+0x5ac/0x7a0 net/core/skbuff.c:571
Code: 41 5d 41 5e 41 5f 5d c3 e8 61 c5 fb fb 4c 8d 63 ff e9 b1 fc ff ff e8 53 c5 fb fb 48 c7 c6 40 8a fc 87 4c 89 e7 e8 f4 23 25 fc <0f> 0b e8 3d c5 fb fb 4d 8d 66 0e 48 b8 00 00 00 00 00 fc ff df 4c
RSP: 0018:ffff88806c74f708 EFLAGS: 00010293
RAX: ffff888037a00540 RBX: ffffea0000a23434 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8199d362 RDI: ffffea0000a23438
RBP: ffff88806c74f770 R08: 000000000000003e R09: ffffed1015d05011
R10: ffffed1015d05010 R11: ffff8880ae828087 R12: ffffea0000a23400
R13: ffff888095892300 R14: 0000000000000001 R15: dffffc0000000000
FS:  00007ffb6de93700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34e8c52000 CR3: 0000000098b9b000 CR4: 00000000001406f0