[ 12.953640][ T251] ip (251) used greatest stack depth: 24024 bytes left [ 18.928122][ T328] gre: GRE over IPv4 demultiplexer driver [ 18.991073][ T328] ip6_gre: GRE over IPv6 tunneling driver [ 19.204717][ T69] ip6_tunnel: g1 xmit: Local address not yet configured! [ 19.358029][ T69] ip6_tunnel: g1 xmit: Local address not yet configured! [ 21.190634][ T351] 8021q: 802.1Q VLAN Support v1.8 [ 22.307966][ T362] [ 22.308336][ T362] ============================= [ 22.308628][ T362] WARNING: suspicious RCU usage [ 22.308919][ T362] 6.15.0-rc5-virtme #1 Not tainted [ 22.309232][ T362] ----------------------------- [ 22.309528][ T362] ./include/net/addrconf.h:347 suspicious rcu_dereference_check() usage! [ 22.309970][ T362] [ 22.309970][ T362] other info that might help us debug this: [ 22.309970][ T362] [ 22.310564][ T362] [ 22.310564][ T362] rcu_scheduler_active = 2, debug_locks = 1 [ 22.311005][ T362] 1 lock held by ip/362: [ 22.311229][ T362] #0: ffff88800aa74430 (&tb->tb6_lock){+...}-{3:3}, at: ip6_route_multipath_add+0x743/0x1450 [ 22.311811][ T362] [ 22.311811][ T362] stack backtrace: [ 22.312156][ T362] CPU: 3 UID: 0 PID: 362 Comm: ip Not tainted 6.15.0-rc5-virtme #1 PREEMPT(full) [ 22.312161][ T362] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.312164][ T362] Call Trace: [ 22.312167][ T362] [ 22.312170][ T362] dump_stack_lvl+0xb0/0xd0 [ 22.312180][ T362] lockdep_rcu_suspicious+0x166/0x270 [ 22.312191][ T362] rt6_multipath_rebalance.part.0+0x70c/0x8a0 [ 22.312200][ T362] fib6_add_rt2node+0xa36/0x2c00 [ 22.312204][ T362] ? lockdep_hardirqs_on+0x7c/0x110 [ 22.312211][ T362] ? _raw_spin_unlock_irqrestore+0x46/0x80 [ 22.312226][ T362] ? __pfx_fib6_add_rt2node+0x10/0x10 [ 22.312230][ T362] ? fib6_add_1.constprop.0+0x486/0x15e0 [ 22.312243][ T362] fib6_add+0x38d/0xec0 [ 22.312249][ T362] ? do_raw_spin_lock+0x130/0x270 [ 22.312254][ T362] ? __pfx_fib6_add+0x10/0x10 [ 22.312257][ T362] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 22.312261][ T362] ? lock_acquire+0x10c/0x170 [ 22.312264][ T362] ? ip6_route_multipath_add+0x743/0x1450 [ 22.312273][ T362] ip6_route_multipath_add+0x75b/0x1450 [ 22.312288][ T362] ? __pfx_ip6_route_multipath_add+0x10/0x10 [ 22.312317][ T362] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 22.312321][ T362] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 22.312327][ T362] inet6_rtm_newroute+0xb2/0x120 [ 22.312331][ T362] ? __pfx_inet6_rtm_newroute+0x10/0x10 [ 22.312349][ T362] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 22.312355][ T362] ? __lock_release+0x5d/0x170 [ 22.312361][ T362] ? rtnetlink_rcv_msg+0x6ed/0xc00 [ 22.312366][ T362] rtnetlink_rcv_msg+0x710/0xc00 [ 22.312372][ T362] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 22.312374][ T362] ? validate_chain+0x166/0x4d0 [ 22.312390][ T362] netlink_rcv_skb+0x12f/0x360 [ 22.312396][ T362] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 22.312402][ T362] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 22.312407][ T362] ? __lock_acquire+0x591/0x9d0 [ 22.312420][ T362] ? netlink_deliver_tap+0x13e/0x340 [ 22.312424][ T362] ? __lock_release+0x5d/0x170 [ 22.312430][ T362] ? netlink_deliver_tap+0x13e/0x340 [ 22.312434][ T362] ? netlink_deliver_tap+0xc3/0x340 [ 22.312441][ T362] netlink_unicast+0x449/0x710 [ 22.312449][ T362] ? __pfx_netlink_unicast+0x10/0x10 [ 22.312453][ T362] ? __lock_acquire+0x591/0x9d0 [ 22.312463][ T362] netlink_sendmsg+0x721/0xbe0 [ 22.312472][ T362] ? __pfx_netlink_sendmsg+0x10/0x10 [ 22.312478][ T362] ? __import_iovec+0x238/0x3c0 [ 22.312491][ T362] ____sys_sendmsg+0x7aa/0xa10 [ 22.312498][ T362] ? __pfx_____sys_sendmsg+0x10/0x10 [ 22.312501][ T362] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 22.312517][ T362] ___sys_sendmsg+0xed/0x170 [ 22.312524][ T362] ? __pfx____sys_sendmsg+0x10/0x10 [ 22.312528][ T362] ? __pfx_handle_pte_fault+0x10/0x10 [ 22.312536][ T362] ? reacquire_held_locks+0xd1/0x200 [ 22.312539][ T362] ? do_user_addr_fault+0x461/0xe00 [ 22.312550][ T362] ? __handle_mm_fault+0x3fc/0x5e0 [ 22.312554][ T362] ? __pfx___handle_mm_fault+0x10/0x10 [ 22.312557][ T362] ? __lock_release+0xa8/0x170 [ 22.312573][ T362] ? __pfx_lock_vma_under_rcu+0x10/0x10 [ 22.312580][ T362] __sys_sendmsg+0x108/0x1a0 [ 22.312585][ T362] ? __pfx___sys_sendmsg+0x10/0x10 [ 22.312589][ T362] ? exc_page_fault+0x5e/0xd0 [ 22.312598][ T362] ? do_user_addr_fault+0x959/0xe00 [ 22.312604][ T362] ? rcu_is_watching+0x12/0xc0 [ 22.312614][ T362] do_syscall_64+0xc1/0x1d0 [ 22.312621][ T362] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 22.312625][ T362] RIP: 0033:0x7fb9362779a7 [ 22.312630][ T362] 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 [ 22.312634][ T362] RSP: 002b:00007fffe037c508 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 22.312638][ T362] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fb9362779a7 [ 22.312640][ T362] RDX: 0000000000000000 RSI: 00007fffe037c570 RDI: 0000000000000005 [ 22.312642][ T362] RBP: 00007fffe037c8bc R08: 0000000000000038 R09: 00007fffe037c566 [ 22.312644][ T362] R10: 00007fffe037f98b R11: 0000000000000246 R12: 00007fffe037d880 [ 22.312646][ T362] R13: 0000000068255b56 R14: 0000000000498600 R15: 00007fffe037f97a [ 22.312660][ T362] [ 25.092725][ T389] GACT probability NOT on [ 25.127126][ T387] tc (387) used greatest stack depth: 23904 bytes left [ 26.866448][ T69] ip6_tunnel: g2 xmit: Local address not yet configured! [ 27.005038][ T69] ip6_tunnel: g2 xmit: Local address not yet configured! [ 124.796552][ C2] clocksource: Long readout interval, skipping watchdog check: cs_nsec: 1341231036 wd_nsec: 1341230595 WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr