[ 11.364549][ T273] ip (273) used greatest stack depth: 23120 bytes left [ 12.098704][ T286] veth0: entered allmulticast mode [ 12.099385][ T286] veth1: entered allmulticast mode [ 12.099917][ T286] veth2: entered allmulticast mode [ 12.101001][ T286] veth3: entered allmulticast mode [ 12.101402][ T286] veth4: entered allmulticast mode [ 12.101756][ T286] veth5: entered allmulticast mode [ 22.891967][ T372] GACT probability NOT on [ 23.212013][ T377] [ 23.212297][ T377] ============================= [ 23.212488][ T377] WARNING: suspicious RCU usage [ 23.212667][ T377] 6.14.0-rc6-virtme #1 Not tainted [ 23.212848][ T377] ----------------------------- [ 23.213176][ T377] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.213477][ T377] [ 23.213477][ T377] other info that might help us debug this: [ 23.213477][ T377] [ 23.213803][ T377] [ 23.213803][ T377] rcu_scheduler_active = 2, debug_locks = 1 [ 23.214063][ T377] 1 lock held by mausezahn/377: [ 23.214260][ T377] #0: ffffffff9ed5b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.214599][ T377] [ 23.214599][ T377] stack backtrace: [ 23.214821][ T377] CPU: 2 UID: 0 PID: 377 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.214825][ T377] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.214827][ T377] Call Trace: [ 23.214829][ T377] [ 23.214831][ T377] dump_stack_lvl+0xb0/0xd0 [ 23.214839][ T377] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.214849][ T377] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.214860][ T377] __dev_queue_xmit+0xfaf/0x18d0 [ 23.214874][ T377] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.214878][ T377] ? packet_parse_headers+0x231/0x9c0 [ 23.214887][ T377] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.214892][ T377] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.214897][ T377] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.214902][ T377] ? dev_get_by_index+0xb2/0x190 [ 23.214913][ T377] packet_snd+0xd0c/0x19d0 [ 23.214925][ T377] ? __lock_release+0x103/0x460 [ 23.214928][ T377] ? __might_fault+0x11b/0x170 [ 23.214935][ T377] ? __pfx_packet_snd+0x10/0x10 [ 23.214937][ T377] ? trace_lock_acquire+0x14c/0x1f0 [ 23.214940][ T377] ? __might_fault+0x11b/0x170 [ 23.214946][ T377] ? lock_acquire+0x32/0xc0 [ 23.214953][ T377] ? __might_fault+0x11b/0x170 [ 23.214963][ T377] __sys_sendto+0x3c3/0x450 [ 23.214969][ T377] ? __pfx___sys_sendto+0x10/0x10 [ 23.214984][ T377] ? sock_ioctl+0x3b6/0x590 [ 23.214993][ T377] ? __pfx___up_read+0x10/0x10 [ 23.215002][ T377] ? do_user_addr_fault+0x374/0xe30 [ 23.215012][ T377] ? do_user_addr_fault+0x374/0xe30 [ 23.215019][ T377] __x64_sys_sendto+0xe0/0x1c0 [ 23.215023][ T377] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.215028][ T377] do_syscall_64+0xc1/0x1d0 [ 23.215036][ T377] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.215040][ T377] RIP: 0033:0x7f19c9844a4a [ 23.215044][ T377] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 [ 23.215047][ T377] RSP: 002b:00007ffd6ffa84f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.215051][ T377] RAX: ffffffffffffffda RBX: 00000000057349d0 RCX: 00007f19c9844a4a [ 23.215053][ T377] RDX: 00000000000000aa RSI: 0000000005734d02 RDI: 0000000000000005 [ 23.215055][ T377] RBP: 0000000005734d02 R08: 00007ffd6ffa8500 R09: 0000000000000014 [ 23.215056][ T377] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.215058][ T377] R13: 00000000000000aa R14: 00007ffd6ffa8500 R15: 0000000000000000 [ 23.215074][ T377] [ 39.330879][ T286] veth0: left allmulticast mode [ 39.331255][ T286] veth1: left allmulticast mode [ 39.331477][ T286] veth2: left allmulticast mode [ 39.331694][ T286] veth3: left allmulticast mode [ 39.331915][ T286] veth4: left allmulticast mode [ 39.332142][ T286] veth5: left allmulticast mode