------------[ cut here ]------------ WARNING: CPU: 0 PID: 7 at drivers/net/geneve.c:1849 geneve_destroy_tunnels drivers/net/geneve.c:1849 [inline] WARNING: CPU: 0 PID: 7 at drivers/net/geneve.c:1849 geneve_exit_batch_net+0x53e/0x640 drivers/net/geneve.c:1859 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:geneve_destroy_tunnels drivers/net/geneve.c:1849 [inline] RIP: 0010:geneve_exit_batch_net+0x53e/0x640 drivers/net/geneve.c:1859 Code: fc 48 c7 c2 e0 0e c0 88 be 2d 00 00 00 48 c7 c7 40 12 c0 88 c6 05 c0 9e d7 05 01 e8 41 3f 92 fc e9 64 fc ff ff e8 c2 4e ac fc <0f> 0b e9 91 fe ff ff 48 8d 43 c0 48 89 85 68 ff ff ff e9 bb fe ff RSP: 0018:ffffc90000cdfb68 EFLAGS: 00010293 RAX: ffff8880a99aa1c0 RBX: dffffc0000000000 RCX: ffffffff863770fc RDX: 0000000000000000 RSI: ffffffff84c92e3e RDI: ffff88805ee16070 RBP: ffffc90000cdfc18 R08: ffff8880a99aa1c0 R09: fffffbfff14e9935 R10: fffffbfff14e9934 R11: ffffffff8a74c9a7 R12: ffff88806890a100 R13: ffff8880964426d0 R14: ffff8880964426c0 R15: ffff8880964426c0 ops_exit_list.isra.0+0x10c/0x160 net/core/net_namespace.c:175 cleanup_net+0x549/0xb10 net/core/net_namespace.c:589 process_one_work+0xa05/0x17a0 kernel/workqueue.c:2264 worker_thread+0x98/0xe40 kernel/workqueue.c:2410 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..