------------[ cut here ]------------ kernel BUG at fs/inode.c:1668! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 10708 Comm: syz-executor090 Not tainted 5.9.0-rc2-next-20200828-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 5a 71 ad ff 48 85 db 75 14 e8 b0 74 ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 a1 74 ad ff e8 9c 74 ad ff <0f> 0b e8 f5 ef ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd RSP: 0018:ffffc9000dea7e10 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c707d6 RDX: ffff8880a4486380 RSI: ffffffff81c707f4 RDI: 0000000000000007 RBP: ffff88809ab250c0 R08: 0000000000000001 R09: ffff8880a2ef4323 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88809ab25020 R14: ffff88809ab250c0 R15: ffff88808ab5b950 FS: 000000000118c880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc13034ee78 CR3: 0000000095a09000 CR4: 00000000001506e0 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: 0033:0x4058a1 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fffd550be30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004058a1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000005 R08: 0000000120080522 R09: 0000000120080522 R10: 0000000120080522 R11: 0000000000000293 R12: 00000000006dbc4c R13: 0000000000000001 R14: 00000000006dbc40 R15: 0000000000000064 Modules linked in: ---[ end trace 78eef8f3fcfab54a ]--- RIP: 0010:iput+0x64/0x70 fs/inode.c:1668 Code: ff 83 e3 40 48 89 de e8 5a 71 ad ff 48 85 db 75 14 e8 b0 74 ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 a1 74 ad ff e8 9c 74 ad ff <0f> 0b e8 f5 ef ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd RSP: 0018:ffffc9000dea7e10 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c707d6 RDX: ffff8880a4486380 RSI: ffffffff81c707f4 RDI: 0000000000000007 RBP: ffff88809ab250c0 R08: 0000000000000001 R09: ffff8880a2ef4323 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88809ab25020 R14: ffff88809ab250c0 R15: ffff88808ab5b950 FS: 000000000118c880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc13034ee78 CR3: 0000000095a09000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400