[ 1336.679485][ T8223] 
[ 1336.679626][ T8223] =============================
[ 1336.679798][ T8223] WARNING: suspicious RCU usage
[ 1336.679961][ T8223] 6.12.0-rc7-virtme #1 Not tainted
[ 1336.680120][ T8223] -----------------------------
[ 1336.680868][ T8223] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1336.681101][ T8223] 
[ 1336.681101][ T8223] other info that might help us debug this:
[ 1336.681101][ T8223] 
[ 1336.681411][ T8223] 
[ 1336.681411][ T8223] rcu_scheduler_active = 2, debug_locks = 1
[ 1336.681640][ T8223] no locks held by smcrouted/8223.
[ 1336.681807][ T8223] 
[ 1336.681807][ T8223] stack backtrace:
[ 1336.681998][ T8223] CPU: 0 UID: 0 PID: 8223 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1336.682273][ T8223] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1336.682468][ T8223] Call Trace:
[ 1336.682590][ T8223]  <TASK>
[ 1336.682677][ T8223]  dump_stack_lvl+0xb0/0xd0
[ 1336.682854][ T8223]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1336.683022][ T8223]  ip6mr_get_table+0x142/0x190
[ 1336.683185][ T8223]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1336.683354][ T8223]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1336.683556][ T8223]  ? __lock_release+0x103/0x460
[ 1336.683712][ T8223]  ? __might_fault+0x11b/0x170
[ 1336.683874][ T8223]  ? trace_lock_acquire+0x14d/0x1f0
[ 1336.684043][ T8223]  ? __might_fault+0xc3/0x170
[ 1336.684197][ T8223]  ? lock_acquire+0x32/0xc0
[ 1336.684357][ T8223]  ? __might_fault+0xc3/0x170
[ 1336.684517][ T8223]  ? __might_fault+0x11b/0x170
[ 1336.684679][ T8223]  do_ipv6_setsockopt+0x705/0x34e0
[ 1336.684840][ T8223]  ? __lock_release+0x10/0x460
[ 1336.684999][ T8223]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1336.685153][ T8223]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1336.685317][ T8223]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1336.685477][ T8223]  ? validate_chain+0x1fe/0xae0
[ 1336.685638][ T8223]  ? is_bpf_text_address+0x67/0x120
[ 1336.685806][ T8223]  ? __pfx_validate_chain+0x10/0x10
[ 1336.685968][ T8223]  ? hlock_class+0x4e/0x130
[ 1336.686134][ T8223]  ? mark_lock+0x38/0x3e0
[ 1336.686260][ T8223]  ? __lock_acquire+0xb3f/0x1580
[ 1336.686431][ T8223]  ? find_held_lock+0x2c/0x110
[ 1336.686605][ T8223]  ? ipv6_setsockopt+0x7f/0xe0
[ 1336.686770][ T8223]  ipv6_setsockopt+0x7f/0xe0
[ 1336.686935][ T8223]  rawv6_setsockopt+0xb7/0x550
[ 1336.687099][ T8223]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1336.687259][ T8223]  ? __lock_acquire+0xb3f/0x1580
[ 1336.687423][ T8223]  ? kfree+0x2d/0x340
[ 1336.687555][ T8223]  do_sock_setsockopt+0x149/0x3a0
[ 1336.687714][ T8223]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1336.687875][ T8223]  ? __lock_release+0x103/0x460
[ 1336.688032][ T8223]  ? fd_install+0x1d1/0x5a0
[ 1336.688196][ T8223]  ? trace_lock_acquire+0x14d/0x1f0
[ 1336.688355][ T8223]  ? fdget+0x52/0x1e0
[ 1336.688480][ T8223]  __sys_setsockopt+0x104/0x1a0
[ 1336.688645][ T8223]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1336.688803][ T8223]  ? __sys_socket+0x168/0x1e0
[ 1336.688968][ T8223]  ? __pfx___sys_socket+0x10/0x10
[ 1336.689136][ T8223]  __x64_sys_setsockopt+0xbd/0x160
[ 1336.689301][ T8223]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1336.689501][ T8223]  do_syscall_64+0xc1/0x1d0
[ 1336.689667][ T8223]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1336.689871][ T8223] RIP: 0033:0x7f8ed1ee691e
[ 1336.690040][ T8223] Code: 0f 1f 40 00 48 8b 15 e1 94 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b1 0f 1f 00 f3 0f 1e fa 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 a9
[ 1336.690599][ T8223] RSP: 002b:00007ffe733b3998 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1336.690841][ T8223] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8ed1ee691e
[ 1336.691081][ T8223] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1336.691394][ T8223] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1336.691635][ T8223] R10: 00007ffe733b39bc R11: 0000000000000246 R12: 0000000000000000
[ 1336.691878][ T8223] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f8ed1feb000
[ 1336.692132][ T8223]  </TASK>
[ 1336.695697][ T8223] veth0: entered allmulticast mode
[ 1336.696322][ T8223] veth1: entered allmulticast mode
[ 1336.696655][ T8223] veth2: entered allmulticast mode
[ 1336.696977][ T8223] veth3: entered allmulticast mode
[ 1336.698526][ T8223] veth4: entered allmulticast mode
[ 1336.698874][ T8223] veth5: entered allmulticast mode
[ 1362.210441][ T8223] veth0: left allmulticast mode
[ 1362.210784][ T8223] veth1: left allmulticast mode
[ 1362.211033][ T8223] veth2: left allmulticast mode
[ 1362.211307][ T8223] veth3: left allmulticast mode
[ 1362.211559][ T8223] veth4: left allmulticast mode
[ 1362.211807][ T8223] veth5: left allmulticast mode