------------[ cut here ]------------ WARNING: CPU: 0 PID: 166 at drivers/net/geneve.c:1849 geneve_destroy_tunnels drivers/net/geneve.c:1849 [inline] WARNING: CPU: 0 PID: 166 at drivers/net/geneve.c:1849 geneve_exit_batch_net+0x512/0x5f0 drivers/net/geneve.c:1859 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 166 Comm: kworker/u4:3 Not tainted 5.6.0-rc6-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+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 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+0x12b/0x220 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 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+0x512/0x5f0 drivers/net/geneve.c:1859 Code: fc 48 c7 c2 c0 3c 80 88 be 2d 00 00 00 48 c7 c7 20 40 80 88 c6 05 c5 b3 b4 05 01 e8 8e 90 ac fc e9 7d fc ff ff e8 7e c4 c5 fc <0f> 0b e9 99 fe ff ff 48 8d 44 24 40 48 89 04 24 e9 c1 fe ff ff e8 RSP: 0018:ffffc90001617b98 EFLAGS: 00010293 RAX: ffff8880a8fd4340 RBX: dffffc0000000000 RCX: ffffffff860eb33e RDX: 0000000000000000 RSI: ffffffff84ac60a2 RDI: ffff888050826070 RBP: ffff88805ae60100 R08: ffff8880a8fd4340 R09: fffffbfff1469d65 R10: fffffbfff1469d64 R11: ffffffff8a34eb27 R12: ffff888093ca6d50 R13: ffff888093ca6d40 R14: ffff888093ca6d40 R15: ffff88805ae601f0 ops_exit_list.isra.0+0x103/0x150 net/core/net_namespace.c:175 cleanup_net+0x511/0xa50 net/core/net_namespace.c:589 process_one_work+0x94b/0x1690 kernel/workqueue.c:2266 worker_thread+0x96/0xe20 kernel/workqueue.c:2412 kthread+0x357/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..