[ 1573.049927][T14089] [ 1573.050252][T14089] ============================= [ 1573.050525][T14089] WARNING: suspicious RCU usage [ 1573.050797][T14089] 6.15.0-rc5-virtme #1 Not tainted [ 1573.051061][T14089] ----------------------------- [ 1573.051315][T14089] ./include/net/addrconf.h:347 suspicious rcu_dereference_check() usage! [ 1573.051707][T14089] [ 1573.051707][T14089] other info that might help us debug this: [ 1573.051707][T14089] [ 1573.052215][T14089] [ 1573.052215][T14089] rcu_scheduler_active = 2, debug_locks = 1 [ 1573.052603][T14089] 1 lock held by ip/14089: [ 1573.052864][T14089] #0: ffff8880126f9430 (&tb->tb6_lock){+...}-{3:3}, at: ip6_route_multipath_add+0x743/0x1450 [ 1573.053649][T14089] [ 1573.053649][T14089] stack backtrace: [ 1573.054164][T14089] CPU: 0 UID: 0 PID: 14089 Comm: ip Not tainted 6.15.0-rc5-virtme #1 PREEMPT(full) [ 1573.054172][T14089] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1573.054177][T14089] Call Trace: [ 1573.054182][T14089] [ 1573.054186][T14089] dump_stack_lvl+0xb0/0xd0 [ 1573.054214][T14089] lockdep_rcu_suspicious+0x166/0x270 [ 1573.054244][T14089] rt6_multipath_rebalance.part.0+0x70c/0x8a0 [ 1573.054261][T14089] fib6_add_rt2node+0xa36/0x2c00 [ 1573.054267][T14089] ? lockdep_hardirqs_on+0x7c/0x110 [ 1573.054276][T14089] ? _raw_spin_unlock_irqrestore+0x46/0x80 [ 1573.054301][T14089] ? __pfx_fib6_add_rt2node+0x10/0x10 [ 1573.054306][T14089] ? fib6_add_1.constprop.0+0x486/0x15e0 [ 1573.054329][T14089] fib6_add+0x38d/0xec0 [ 1573.054343][T14089] ? do_raw_spin_lock+0x130/0x270 [ 1573.054351][T14089] ? __pfx_fib6_add+0x10/0x10 [ 1573.054355][T14089] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 1573.054362][T14089] ? lock_acquire+0x10c/0x170 [ 1573.054367][T14089] ? ip6_route_multipath_add+0x743/0x1450 [ 1573.054383][T14089] ip6_route_multipath_add+0x75b/0x1450 [ 1573.054407][T14089] ? __pfx_ip6_route_multipath_add+0x10/0x10 [ 1573.054463][T14089] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 1573.054470][T14089] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 1573.054481][T14089] inet6_rtm_newroute+0xb2/0x120 [ 1573.054488][T14089] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 1573.054515][T14089] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 1573.054526][T14089] ? __lock_release+0x5d/0x170 [ 1573.054536][T14089] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 1573.054545][T14089] rtnetlink_rcv_msg+0x710/0xc00 [ 1573.054557][T14089] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 1573.054561][T14089] ? validate_chain+0x166/0x4d0 [ 1573.054590][T14089] netlink_rcv_skb+0x12f/0x360 [ 1573.054603][T14089] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 1573.054615][T14089] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 1573.054623][T14089] ? __lock_acquire+0x591/0x9d0 [ 1573.054648][T14089] ? netlink_deliver_tap+0x13e/0x340 [ 1573.054653][T14089] ? __lock_release+0x5d/0x170 [ 1573.054664][T14089] ? netlink_deliver_tap+0x13e/0x340 [ 1573.054671][T14089] ? netlink_deliver_tap+0xc3/0x340 [ 1573.054684][T14089] netlink_unicast+0x449/0x710 [ 1573.054700][T14089] ? __pfx_netlink_unicast+0x10/0x10 [ 1573.054706][T14089] ? __lock_acquire+0x591/0x9d0 [ 1573.054725][T14089] netlink_sendmsg+0x721/0xbe0 [ 1573.054741][T14089] ? __pfx_netlink_sendmsg+0x10/0x10 [ 1573.054753][T14089] ? __import_iovec+0x238/0x3c0 [ 1573.054788][T14089] ____sys_sendmsg+0x7aa/0xa10 [ 1573.054808][T14089] ? __pfx_____sys_sendmsg+0x10/0x10 [ 1573.054813][T14089] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 1573.054843][T14089] ___sys_sendmsg+0xed/0x170 [ 1573.054849][T14089] ? kasan_record_aux_stack+0x8c/0xa0 [ 1573.054867][T14089] ? __call_rcu_common.constprop.0+0xa1/0x610 [ 1573.054884][T14089] ? __pfx____sys_sendmsg+0x10/0x10 [ 1573.054896][T14089] ? find_held_lock+0x2b/0x80 [ 1573.054912][T14089] ? __lock_acquire+0x591/0x9d0 [ 1573.054928][T14089] ? find_held_lock+0x2b/0x80 [ 1573.054937][T14089] ? __virt_addr_valid+0x22e/0x450 [ 1573.054955][T14089] ? __lock_release+0x5d/0x170 [ 1573.054974][T14089] __sys_sendmsg+0x108/0x1a0 [ 1573.054981][T14089] ? __pfx___sys_sendmsg+0x10/0x10 [ 1573.055007][T14089] ? rcu_is_watching+0x12/0xc0 [ 1573.055022][T14089] do_syscall_64+0xc1/0x1d0 [ 1573.055035][T14089] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 1573.055049][T14089] RIP: 0033:0x7ff5aa0489a7 [ 1573.055056][T14089] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 1573.055061][T14089] RSP: 002b:00007ffdca664f48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1573.055071][T14089] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff5aa0489a7 [ 1573.055074][T14089] RDX: 0000000000000000 RSI: 00007ffdca664fb0 RDI: 0000000000000005 [ 1573.055077][T14089] RBP: 00007ffdca6652fc R08: 0000000000000038 R09: 0000000000000000 [ 1573.055080][T14089] R10: 000000000f726910 R11: 0000000000000246 R12: 00007ffdca6662c0 [ 1573.055083][T14089] R13: 00000000682563c6 R14: 0000000000498600 R15: 00007ffdca668991 [ 1573.055111][T14089] [ 1575.789881][T14115] veth7: left promiscuous mode WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr