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kernel BUG at fs/inode.c:1668!
invalid opcode: 0000 [#2] PREEMPT SMP KASAN
CPU: 0 PID: 12985 Comm: syz-executor807 Tainted: G      D           5.9.0-rc2-next-20200825-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:iput+0x64/0x70 fs/inode.c:1668
Code: ff 83 e3 40 48 89 de e8 4a bd ad ff 48 85 db 75 14 e8 a0 c0 ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 91 c0 ad ff e8 8c c0 ad ff <0f> 0b e8 55 f0 ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd
RSP: 0018:ffffc9000e177e10 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c6baa6
RDX: ffff8880909680c0 RSI: ffffffff81c6bac4 RDI: 0000000000000007
RBP: ffff8880849f40c0 R08: 0000000000000001 R09: ffff8880a76161e3
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8880849f4020 R14: ffff8880849f40c0 R15: ffff888089f8f370
FS:  0000000000abd940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe608873db8 CR3: 00000000a615d000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __sock_release+0x20c/0x280 net/socket.c:608
 sock_close+0x18/0x20 net/socket.c:1277
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:140 [inline]
 exit_to_user_mode_prepare+0x195/0x1c0 kernel/entry/common.c:167
 syscall_exit_to_user_mode+0x59/0x2b0 kernel/entry/common.c:242
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x407061
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 24 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:00007fff3cd05f90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000407061
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00000000006dec7c R08: 0000000000000001 R09: 0000000000000001
R10: 00007fff3cd05fb0 R11: 0000000000000293 R12: 00000000006dec70
R13: 0000000000000001 R14: 20c49ba5e353f7cf R15: 0000000000000009
Modules linked in:
---[ end trace 306f82c36c25f761 ]---
RIP: 0010:iput+0x64/0x70 fs/inode.c:1668
Code: ff 83 e3 40 48 89 de e8 4a bd ad ff 48 85 db 75 14 e8 a0 c0 ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 91 c0 ad ff e8 8c c0 ad ff <0f> 0b e8 55 f0 ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd
RSP: 0018:ffffc9000df57e10 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c6baa6
RDX: ffff888091244240 RSI: ffffffff81c6bac4 RDI: 0000000000000007
RBP: ffff888087c000c0 R08: 0000000000000001 R09: ffffffff89d57027
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888087c00020 R14: ffff888087c000c0 R15: ffff888089fddb08
FS:  0000000000abd940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11b9bec000 CR3: 00000000a615d000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400