[ 10.904319][ T250] ip (250) used greatest stack depth: 24352 bytes left [ 11.952160][ T282] veth0: entered allmulticast mode [ 11.952995][ T282] veth1: entered allmulticast mode [ 11.964487][ T282] veth2: entered allmulticast mode [ 11.965108][ T282] veth3: entered allmulticast mode [ 23.502784][ T370] GACT probability NOT on [ 23.658302][ T372] [ 23.658576][ T372] ============================= [ 23.658750][ T372] WARNING: suspicious RCU usage [ 23.658925][ T372] 6.14.0-rc6-virtme #1 Not tainted [ 23.659099][ T372] ----------------------------- [ 23.659279][ T372] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 23.659560][ T372] [ 23.659560][ T372] other info that might help us debug this: [ 23.659560][ T372] [ 23.659878][ T372] [ 23.659878][ T372] rcu_scheduler_active = 2, debug_locks = 1 [ 23.660121][ T372] 1 lock held by mausezahn/372: [ 23.660299][ T372] #0: ffffffffb835b5c0 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f0/0x18d0 [ 23.660606][ T372] [ 23.660606][ T372] stack backtrace: [ 23.660812][ T372] CPU: 3 UID: 0 PID: 372 Comm: mausezahn Not tainted 6.14.0-rc6-virtme #1 [ 23.660816][ T372] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.660818][ T372] Call Trace: [ 23.660820][ T372] [ 23.660822][ T372] dump_stack_lvl+0xb0/0xd0 [ 23.660829][ T372] lockdep_rcu_suspicious+0x1ea/0x280 [ 23.660839][ T372] dev_hard_start_xmit+0x2fc/0x3f0 [ 23.660850][ T372] __dev_queue_xmit+0xfaf/0x18d0 [ 23.660864][ T372] ? __pfx___dev_queue_xmit+0x10/0x10 [ 23.660868][ T372] ? packet_parse_headers+0x231/0x9c0 [ 23.660877][ T372] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 23.660883][ T372] ? __pfx_packet_parse_headers+0x10/0x10 [ 23.660887][ T372] ? skb_copy_datagram_from_iter+0xe6/0x6f0 [ 23.660892][ T372] ? dev_get_by_index+0xb2/0x190 [ 23.660904][ T372] packet_snd+0xd0c/0x19d0 [ 23.660915][ T372] ? __lock_release+0x103/0x460 [ 23.660918][ T372] ? __might_fault+0x11b/0x170 [ 23.660926][ T372] ? __pfx_packet_snd+0x10/0x10 [ 23.660928][ T372] ? trace_lock_acquire+0x14c/0x1f0 [ 23.660930][ T372] ? __might_fault+0x11b/0x170 [ 23.660937][ T372] ? lock_acquire+0x32/0xc0 [ 23.660943][ T372] ? __might_fault+0x11b/0x170 [ 23.660954][ T372] __sys_sendto+0x3c3/0x450 [ 23.660960][ T372] ? __pfx___sys_sendto+0x10/0x10 [ 23.660974][ T372] ? sock_ioctl+0x3b6/0x590 [ 23.660983][ T372] ? rseq_update_cpu_node_id+0xe6/0x140 [ 23.660991][ T372] ? __rseq_handle_notify_resume+0x288/0x3e0 [ 23.660998][ T372] ? __pfx___rseq_handle_notify_resume+0x10/0x10 [ 23.661008][ T372] __x64_sys_sendto+0xe0/0x1c0 [ 23.661012][ T372] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 23.661017][ T372] do_syscall_64+0xc1/0x1d0 [ 23.661024][ T372] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 23.661029][ T372] RIP: 0033:0x7f87b20b3a4a [ 23.661033][ T372] 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 [ 23.661035][ T372] RSP: 002b:00007ffe4d27b7d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 23.661039][ T372] RAX: ffffffffffffffda RBX: 000000001690b9d0 RCX: 00007f87b20b3a4a [ 23.661041][ T372] RDX: 000000000000002a RSI: 000000001690bc92 RDI: 0000000000000005 [ 23.661043][ T372] RBP: 000000001690bc92 R08: 00007ffe4d27b7e0 R09: 0000000000000014 [ 23.661045][ T372] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.661046][ T372] R13: 000000000000002a R14: 00007ffe4d27b7e0 R15: 0000000000000000 [ 23.661062][ T372] [ 30.731806][ T282] veth0: left allmulticast mode [ 30.732261][ T282] veth1: left allmulticast mode [ 30.732502][ T282] veth2: left allmulticast mode [ 30.732742][ T282] veth3: left allmulticast mode