[ 1290.122906][ T8391] 
[ 1290.123041][ T8391] =============================
[ 1290.123211][ T8391] WARNING: suspicious RCU usage
[ 1290.123367][ T8391] 6.12.0-rc6-virtme #1 Not tainted
[ 1290.123528][ T8391] -----------------------------
[ 1290.123688][ T8391] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1290.123926][ T8391] 
[ 1290.123926][ T8391] other info that might help us debug this:
[ 1290.123926][ T8391] 
[ 1290.124239][ T8391] 
[ 1290.124239][ T8391] rcu_scheduler_active = 2, debug_locks = 1
[ 1290.124478][ T8391] no locks held by smcrouted/8391.
[ 1290.124641][ T8391] 
[ 1290.124641][ T8391] stack backtrace:
[ 1290.124912][ T8391] CPU: 0 UID: 0 PID: 8391 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1290.125200][ T8391] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1290.125411][ T8391] Call Trace:
[ 1290.125541][ T8391]  <TASK>
[ 1290.125627][ T8391]  dump_stack_lvl+0xb0/0xd0
[ 1290.125801][ T8391]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1290.125972][ T8391]  ip6mr_get_table+0x142/0x190
[ 1290.126141][ T8391]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1290.126309][ T8391]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1290.126518][ T8391]  ? __lock_release+0x103/0x460
[ 1290.126706][ T8391]  ? __might_fault+0x11b/0x170
[ 1290.126875][ T8391]  ? trace_lock_acquire+0x14d/0x1f0
[ 1290.127041][ T8391]  ? __might_fault+0xc3/0x170
[ 1290.127204][ T8391]  ? lock_acquire+0x32/0xc0
[ 1290.127358][ T8391]  ? __might_fault+0xc3/0x170
[ 1290.127519][ T8391]  ? __might_fault+0x11b/0x170
[ 1290.127687][ T8391]  do_ipv6_setsockopt+0x705/0x34e0
[ 1290.127849][ T8391]  ? __lock_release+0xe0/0x460
[ 1290.128013][ T8391]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1290.128176][ T8391]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1290.128345][ T8391]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1290.128509][ T8391]  ? validate_chain+0x1fe/0xae0
[ 1290.128665][ T8391]  ? is_bpf_text_address+0x67/0x120
[ 1290.128832][ T8391]  ? __pfx_validate_chain+0x10/0x10
[ 1290.128989][ T8391]  ? hlock_class+0x4e/0x130
[ 1290.129148][ T8391]  ? mark_lock+0x38/0x3e0
[ 1290.129297][ T8391]  ? __lock_acquire+0xb3f/0x1580
[ 1290.129461][ T8391]  ? find_held_lock+0x2c/0x110
[ 1290.129630][ T8391]  ? ipv6_setsockopt+0x7f/0xe0
[ 1290.129786][ T8391]  ipv6_setsockopt+0x7f/0xe0
[ 1290.129945][ T8391]  rawv6_setsockopt+0xb7/0x550
[ 1290.130105][ T8391]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1290.130262][ T8391]  ? __lock_acquire+0xb3f/0x1580
[ 1290.130425][ T8391]  ? kfree+0x2d/0x340
[ 1290.130549][ T8391]  do_sock_setsockopt+0x149/0x3a0
[ 1290.130719][ T8391]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1290.130896][ T8391]  ? __lock_release+0x103/0x460
[ 1290.131051][ T8391]  ? fd_install+0x1d1/0x5a0
[ 1290.131210][ T8391]  ? trace_lock_acquire+0x14d/0x1f0
[ 1290.131366][ T8391]  ? fdget+0x52/0x1e0
[ 1290.131489][ T8391]  __sys_setsockopt+0x104/0x1a0
[ 1290.131648][ T8391]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1290.131813][ T8391]  ? __sys_socket+0x168/0x1e0
[ 1290.131972][ T8391]  ? __pfx___sys_socket+0x10/0x10
[ 1290.132136][ T8391]  ? do_user_addr_fault+0x374/0xe30
[ 1290.132296][ T8391]  __x64_sys_setsockopt+0xbd/0x160
[ 1290.132450][ T8391]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1290.132643][ T8391]  do_syscall_64+0xc1/0x1d0
[ 1290.132800][ T8391]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1290.132999][ T8391] RIP: 0033:0x7f6ecd91c91e
[ 1290.133166][ T8391] 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
[ 1290.133707][ T8391] RSP: 002b:00007ffd88276c88 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1290.133946][ T8391] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6ecd91c91e
[ 1290.134183][ T8391] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1290.134416][ T8391] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1290.134697][ T8391] R10: 00007ffd88276cac R11: 0000000000000246 R12: 0000000000000000
[ 1290.134992][ T8391] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f6ecda21000
[ 1290.135296][ T8391]  </TASK>
[ 1290.139066][ T8391] veth0: entered allmulticast mode
[ 1290.139689][ T8391] veth1: entered allmulticast mode
[ 1290.140080][ T8391] veth2: entered allmulticast mode
[ 1290.140469][ T8391] veth3: entered allmulticast mode
[ 1308.750396][ T8391] veth0: left allmulticast mode
[ 1308.750923][ T8391] veth1: left allmulticast mode
[ 1308.751379][ T8391] veth2: left allmulticast mode
[ 1308.751776][ T8391] veth3: left allmulticast mode