WARNING: CPU: 1 PID: 2015 at net/ipv4/tcp.c:2422 tcp_close+0xf44/0x12d0 net/ipv4/tcp.c:2422 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 2015 Comm: syz-executor2 Not tainted 4.18.0-rc3+ #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 panic+0x238/0x4e7 kernel/panic.c:184 __warn.cold.8+0x163/0x1ba kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 RIP: 0010:tcp_close+0xf44/0x12d0 net/ipv4/tcp.c:2422 Code: ff ff e8 1f 82 16 fb be 07 00 00 00 48 89 df 4c 8d 63 28 e8 fe f1 fe ff 48 89 df e8 f6 de fd ff e9 df f6 ff ff e8 fc 81 16 fb <0f> 0b e9 68 f8 ff ff e8 f0 81 16 fb be 07 00 00 00 48 89 df e8 d3 RSP: 0018:ffff880194d8fa68 EFLAGS: 00010293 RAX: ffff880197752000 RBX: ffff8801af048040 RCX: ffffffff86658235 RDX: 0000000000000000 RSI: ffffffff866589d4 RDI: 0000000000000005 RBP: ffff880194d8fb28 R08: ffff880197752000 R09: ffffed0035e09019 R10: ffffed0035e09019 R11: ffff8801af0480cb R12: ffff8801af048068 R13: ffff8801af0480c8 R14: ffff8801af048052 R15: 0000000000000009 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:459 __sock_release+0xd7/0x260 net/socket.c:599 sock_close+0x19/0x20 net/socket.c:1150 __fput+0x355/0x8b0 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x1ec/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:192 [inline] exit_to_usermode_loop+0x313/0x370 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x40fb91 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 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:0000000000a3eab0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000017 RCX: 000000000040fb91 RDX: 0000000000000000 RSI: 00000000007331e0 RDI: 0000000000000016 RBP: 0000000000000013 R08: 0000000000a3ea30 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000a3f160 R15: 00000000007034c0 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..