[ 922.307413][ T6194] [ 922.307796][ T6194] ============================= [ 922.308069][ T6194] WARNING: suspicious RCU usage [ 922.308339][ T6194] 6.15.0-rc5-virtme #1 Not tainted [ 922.308596][ T6194] ----------------------------- [ 922.308860][ T6194] ./include/net/addrconf.h:347 suspicious rcu_dereference_check() usage! [ 922.309352][ T6194] [ 922.309352][ T6194] other info that might help us debug this: [ 922.309352][ T6194] [ 922.310105][ T6194] [ 922.310105][ T6194] rcu_scheduler_active = 2, debug_locks = 1 [ 922.310501][ T6194] 1 lock held by ip/6194: [ 922.310704][ T6194] #0: ffff888012942630 (&tb->tb6_lock){+...}-{3:3}, at: ip6_route_multipath_add+0x743/0x1450 [ 922.311255][ T6194] [ 922.311255][ T6194] stack backtrace: [ 922.311577][ T6194] CPU: 1 UID: 0 PID: 6194 Comm: ip Not tainted 6.15.0-rc5-virtme #1 PREEMPT(full) [ 922.311583][ T6194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 922.311585][ T6194] Call Trace: [ 922.311589][ T6194] [ 922.311591][ T6194] dump_stack_lvl+0xb0/0xd0 [ 922.311605][ T6194] lockdep_rcu_suspicious+0x166/0x270 [ 922.311619][ T6194] rt6_multipath_rebalance.part.0+0x70c/0x8a0 [ 922.311628][ T6194] fib6_add_rt2node+0xa36/0x2c00 [ 922.311631][ T6194] ? lockdep_hardirqs_on+0x7c/0x110 [ 922.311637][ T6194] ? _raw_spin_unlock_irqrestore+0x46/0x80 [ 922.311652][ T6194] ? __pfx_fib6_add_rt2node+0x10/0x10 [ 922.311655][ T6194] ? fib6_add_1.constprop.0+0x486/0x15e0 [ 922.311668][ T6194] fib6_add+0x38d/0xec0 [ 922.311676][ T6194] ? do_raw_spin_lock+0x130/0x270 [ 922.311681][ T6194] ? __pfx_fib6_add+0x10/0x10 [ 922.311683][ T6194] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 922.311688][ T6194] ? lock_acquire+0x10c/0x170 [ 922.311690][ T6194] ? ip6_route_multipath_add+0x743/0x1450 [ 922.311699][ T6194] ip6_route_multipath_add+0x75b/0x1450 [ 922.311713][ T6194] ? __pfx_ip6_route_multipath_add+0x10/0x10 [ 922.311743][ T6194] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 922.311747][ T6194] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 922.311753][ T6194] inet6_rtm_newroute+0xb2/0x120 [ 922.311757][ T6194] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 922.311776][ T6194] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 922.311784][ T6194] ? __lock_release+0x5d/0x170 [ 922.311790][ T6194] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 922.311795][ T6194] rtnetlink_rcv_msg+0x710/0xc00 [ 922.311801][ T6194] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 922.311803][ T6194] ? validate_chain+0x166/0x4d0 [ 922.311819][ T6194] netlink_rcv_skb+0x12f/0x360 [ 922.311826][ T6194] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 922.311832][ T6194] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 922.311836][ T6194] ? __lock_acquire+0x591/0x9d0 [ 922.311850][ T6194] ? netlink_deliver_tap+0x13e/0x340 [ 922.311853][ T6194] ? __lock_release+0x5d/0x170 [ 922.311859][ T6194] ? netlink_deliver_tap+0x13e/0x340 [ 922.311862][ T6194] ? netlink_deliver_tap+0xc3/0x340 [ 922.311869][ T6194] netlink_unicast+0x449/0x710 [ 922.311877][ T6194] ? __pfx_netlink_unicast+0x10/0x10 [ 922.311881][ T6194] ? __lock_acquire+0x591/0x9d0 [ 922.311891][ T6194] netlink_sendmsg+0x721/0xbe0 [ 922.311900][ T6194] ? __pfx_netlink_sendmsg+0x10/0x10 [ 922.311906][ T6194] ? __import_iovec+0x238/0x3c0 [ 922.311922][ T6194] ____sys_sendmsg+0x7aa/0xa10 [ 922.311935][ T6194] ? __pfx_____sys_sendmsg+0x10/0x10 [ 922.311938][ T6194] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 922.311954][ T6194] ___sys_sendmsg+0xed/0x170 [ 922.311957][ T6194] ? kasan_record_aux_stack+0x8c/0xa0 [ 922.311967][ T6194] ? __call_rcu_common.constprop.0+0xa1/0x610 [ 922.311978][ T6194] ? __pfx____sys_sendmsg+0x10/0x10 [ 922.311986][ T6194] ? find_held_lock+0x2b/0x80 [ 922.311996][ T6194] ? __lock_acquire+0x591/0x9d0 [ 922.312006][ T6194] ? find_held_lock+0x2b/0x80 [ 922.312011][ T6194] ? __virt_addr_valid+0x22e/0x450 [ 922.312019][ T6194] ? __lock_release+0x5d/0x170 [ 922.312031][ T6194] __sys_sendmsg+0x108/0x1a0 [ 922.312036][ T6194] ? __pfx___sys_sendmsg+0x10/0x10 [ 922.312052][ T6194] ? rcu_is_watching+0x12/0xc0 [ 922.312061][ T6194] do_syscall_64+0xc1/0x1d0 [ 922.312069][ T6194] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 922.312074][ T6194] RIP: 0033:0x7f8e77c649a7 [ 922.312078][ T6194] 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 [ 922.312081][ T6194] RSP: 002b:00007ffd73480708 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 922.312086][ T6194] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f8e77c649a7 [ 922.312088][ T6194] RDX: 0000000000000000 RSI: 00007ffd73480770 RDI: 0000000000000005 [ 922.312090][ T6194] RBP: 00007ffd73480abc R08: 0000000000000038 R09: 0000000000000000 [ 922.312092][ T6194] R10: 000000000b9c6910 R11: 0000000000000246 R12: 00007ffd73481a80 [ 922.312094][ T6194] R13: 00000000682562aa R14: 0000000000498600 R15: 00007ffd7348499b [ 922.312108][ T6194]