[ 188.330465][ T2881] IPv6: Can't replace route, no match found [ 191.504501][ T2951] IPv6: Can't replace route, no match found [ 350.110543][ T4571] veth2: entered promiscuous mode [ 350.142293][ T4571] [ 350.142563][ T4571] ============================= [ 350.142756][ T4571] WARNING: suspicious RCU usage [ 350.142936][ T4571] 6.14.0-rc6-virtme #1 Not tainted [ 350.143290][ T4571] ----------------------------- [ 350.143488][ T4571] ./include/net/net_namespace.h:418 suspicious rcu_dereference_check() usage! [ 350.143827][ T4571] [ 350.143827][ T4571] other info that might help us debug this: [ 350.143827][ T4571] [ 350.144184][ T4571] [ 350.144184][ T4571] rcu_scheduler_active = 2, debug_locks = 1 [ 350.144444][ T4571] 1 lock held by ra6/4571: [ 350.144631][ T4571] #0: ffffffffb7d6f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x1f5/0x18d0 [ 350.144961][ T4571] [ 350.144961][ T4571] stack backtrace: [ 350.145198][ T4571] CPU: 2 UID: 65534 PID: 4571 Comm: ra6 Not tainted 6.14.0-rc6-virtme #1 [ 350.145202][ T4571] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 350.145204][ T4571] Call Trace: [ 350.145206][ T4571] [ 350.145209][ T4571] dump_stack_lvl+0xb0/0xd0 [ 350.145217][ T4571] lockdep_rcu_suspicious+0x1ea/0x280 [ 350.145229][ T4571] dev_hard_start_xmit+0x2fc/0x3f0 [ 350.145241][ T4571] __dev_queue_xmit+0xfaa/0x18d0 [ 350.145245][ T4571] ? _copy_from_iter+0x1d2/0x12e0 [ 350.145262][ T4571] ? __pfx___dev_queue_xmit+0x10/0x10 [ 350.145267][ T4571] ? packet_parse_headers+0x243/0x9d0 [ 350.145278][ T4571] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 350.145285][ T4571] ? __pfx_packet_parse_headers+0x10/0x10 [ 350.145289][ T4571] ? skb_copy_datagram_from_iter+0xe6/0x6e0 [ 350.145298][ T4571] ? packet_cached_dev_get+0xd5/0x210 [ 350.145307][ T4571] packet_snd+0xd0d/0x19c0 [ 350.145319][ T4571] ? hlock_class+0x4e/0x130 [ 350.145323][ T4571] ? mark_lock+0x38/0x3e0 [ 350.145328][ T4571] ? __pfx_packet_snd+0x10/0x10 [ 350.145336][ T4571] ? __lock_acquire+0xb9a/0x1680 [ 350.145352][ T4571] __sys_sendto+0x3c3/0x450 [ 350.145359][ T4571] ? __pfx___sys_sendto+0x10/0x10 [ 350.145372][ T4571] ? __lock_release+0x103/0x460 [ 350.145374][ T4571] ? do_user_addr_fault+0x972/0xe30 [ 350.145380][ T4571] ? __pfx___lock_release+0x10/0x10 [ 350.145383][ T4571] ? __up_read+0x1a7/0x780 [ 350.145389][ T4571] ? __pfx___up_read+0x10/0x10 [ 350.145397][ T4571] ? do_user_addr_fault+0x972/0xe30 [ 350.145404][ T4571] ? do_user_addr_fault+0x97c/0xe30 [ 350.145412][ T4571] __x64_sys_sendto+0xe0/0x1c0 [ 350.145416][ T4571] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 350.145420][ T4571] do_syscall_64+0xc1/0x1d0 [ 350.145427][ T4571] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 350.145431][ T4571] RIP: 0033:0x7ff2d8e308f0 [ 350.145435][ T4571] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20 [ 350.145438][ T4571] RSP: 002b:00007ffdc5a90578 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 350.145442][ T4571] RAX: ffffffffffffffda RBX: 000000001786fe50 RCX: 00007ff2d8e308f0 [ 350.145444][ T4571] RDX: 0000000000000046 RSI: 0000000000417940 RDI: 0000000000000006 [ 350.145445][ T4571] RBP: 00007ffdc5a905d0 R08: 0000000000000000 R09: 0000000000000000 [ 350.145447][ T4571] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdc5a910b8 [ 350.145449][ T4571] R13: 0000000000402516 R14: 0000000000416de0 R15: 00007ff2d9055000 [ 350.145466][ T4571] [ 350.162300][ T4571] veth2: left promiscuous mode