[ 2060.352641][ T8067] [ 2060.353014][ T8067] ============================= [ 2060.353314][ T8067] WARNING: suspicious RCU usage [ 2060.353600][ T8067] 6.15.0-rc5-virtme #1 Not tainted [ 2060.353888][ T8067] ----------------------------- [ 2060.354160][ T8067] ./include/net/addrconf.h:347 suspicious rcu_dereference_check() usage! [ 2060.354570][ T8067] [ 2060.354570][ T8067] other info that might help us debug this: [ 2060.354570][ T8067] [ 2060.355105][ T8067] [ 2060.355105][ T8067] rcu_scheduler_active = 2, debug_locks = 1 [ 2060.355510][ T8067] 1 lock held by ip/8067: [ 2060.355722][ T8067] #0: ffff888009f01430 (&tb->tb6_lock){+.-.}-{3:3}, at: ip6_route_multipath_add+0x743/0x1450 [ 2060.356293][ T8067] [ 2060.356293][ T8067] stack backtrace: [ 2060.356636][ T8067] CPU: 0 UID: 0 PID: 8067 Comm: ip Not tainted 6.15.0-rc5-virtme #1 PREEMPT(full) [ 2060.356640][ T8067] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2060.356642][ T8067] Call Trace: [ 2060.356645][ T8067] [ 2060.356647][ T8067] dump_stack_lvl+0xb0/0xd0 [ 2060.356655][ T8067] lockdep_rcu_suspicious+0x166/0x270 [ 2060.356666][ T8067] rt6_multipath_rebalance.part.0+0x70c/0x8a0 [ 2060.356675][ T8067] fib6_add_rt2node+0xa36/0x2c00 [ 2060.356678][ T8067] ? lockdep_hardirqs_on+0x7c/0x110 [ 2060.356682][ T8067] ? _raw_spin_unlock_irqrestore+0x46/0x80 [ 2060.356697][ T8067] ? __pfx_fib6_add_rt2node+0x10/0x10 [ 2060.356700][ T8067] ? fib6_add_1.constprop.0+0x486/0x15e0 [ 2060.356713][ T8067] fib6_add+0x38d/0xec0 [ 2060.356719][ T8067] ? do_raw_spin_lock+0x130/0x270 [ 2060.356724][ T8067] ? __pfx_fib6_add+0x10/0x10 [ 2060.356726][ T8067] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 2060.356731][ T8067] ? lock_acquire+0x10c/0x170 [ 2060.356733][ T8067] ? ip6_route_multipath_add+0x743/0x1450 [ 2060.356743][ T8067] ip6_route_multipath_add+0x75b/0x1450 [ 2060.356757][ T8067] ? __pfx_ip6_route_multipath_add+0x10/0x10 [ 2060.356787][ T8067] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 2060.356791][ T8067] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 2060.356796][ T8067] inet6_rtm_newroute+0xb2/0x120 [ 2060.356801][ T8067] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 2060.356822][ T8067] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 2060.356825][ T8067] ? __lock_release+0x5d/0x170 [ 2060.356832][ T8067] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 2060.356837][ T8067] rtnetlink_rcv_msg+0x710/0xc00 [ 2060.356843][ T8067] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 2060.356845][ T8067] ? validate_chain+0x166/0x4d0 [ 2060.356861][ T8067] netlink_rcv_skb+0x12f/0x360 [ 2060.356866][ T8067] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 2060.356873][ T8067] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 2060.356877][ T8067] ? __lock_acquire+0x591/0x9d0 [ 2060.356890][ T8067] ? netlink_deliver_tap+0x13e/0x340 [ 2060.356894][ T8067] ? __lock_release+0x5d/0x170 [ 2060.356900][ T8067] ? netlink_deliver_tap+0x13e/0x340 [ 2060.356903][ T8067] ? netlink_deliver_tap+0xc3/0x340 [ 2060.356911][ T8067] netlink_unicast+0x449/0x710 [ 2060.356919][ T8067] ? __pfx_netlink_unicast+0x10/0x10 [ 2060.356923][ T8067] ? __lock_acquire+0x591/0x9d0 [ 2060.356934][ T8067] netlink_sendmsg+0x721/0xbe0 [ 2060.356943][ T8067] ? __pfx_netlink_sendmsg+0x10/0x10 [ 2060.356949][ T8067] ? __import_iovec+0x238/0x3c0 [ 2060.356961][ T8067] ____sys_sendmsg+0x7aa/0xa10 [ 2060.356968][ T8067] ? __pfx_____sys_sendmsg+0x10/0x10 [ 2060.356971][ T8067] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 2060.356986][ T8067] ___sys_sendmsg+0xed/0x170 [ 2060.356989][ T8067] ? kasan_record_aux_stack+0x8c/0xa0 [ 2060.356995][ T8067] ? __call_rcu_common.constprop.0+0xa1/0x610 [ 2060.357002][ T8067] ? __pfx____sys_sendmsg+0x10/0x10 [ 2060.357010][ T8067] ? find_held_lock+0x2b/0x80 [ 2060.357019][ T8067] ? __lock_acquire+0x591/0x9d0 [ 2060.357030][ T8067] ? find_held_lock+0x2b/0x80 [ 2060.357035][ T8067] ? __virt_addr_valid+0x22e/0x450 [ 2060.357040][ T8067] ? __lock_release+0x5d/0x170 [ 2060.357053][ T8067] __sys_sendmsg+0x108/0x1a0 [ 2060.357057][ T8067] ? __pfx___sys_sendmsg+0x10/0x10 [ 2060.357074][ T8067] ? rcu_is_watching+0x12/0xc0 [ 2060.357081][ T8067] do_syscall_64+0xc1/0x1d0 [ 2060.357087][ T8067] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 2060.357091][ T8067] RIP: 0033:0x7fec91f3c9a7 [ 2060.357096][ T8067] 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 [ 2060.357099][ T8067] RSP: 002b:00007fff2e87b138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 2060.357102][ T8067] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fec91f3c9a7 [ 2060.357104][ T8067] RDX: 0000000000000000 RSI: 00007fff2e87b1a0 RDI: 0000000000000005 [ 2060.357106][ T8067] RBP: 00007fff2e87b4ec R08: 0000000000000038 R09: 0000000000000000 [ 2060.357108][ T8067] R10: 000000002151e910 R11: 0000000000000246 R12: 00007fff2e87c4b0 [ 2060.357110][ T8067] R13: 0000000068258d91 R14: 0000000000498600 R15: 00007fff2e87e991 [ 2060.357124][ T8067] [ 2083.093283][ C1] clocksource: Long readout interval, skipping watchdog check: cs_nsec: 2136368630 wd_nsec: 2136367930 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr