[ 1284.858494][ T8253] 
[ 1284.858684][ T8253] =============================
[ 1284.858968][ T8253] WARNING: suspicious RCU usage
[ 1284.859229][ T8253] 6.12.0-rc7-virtme #1 Not tainted
[ 1284.859490][ T8253] -----------------------------
[ 1284.861057][ T8253] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1284.861450][ T8253] 
[ 1284.861450][ T8253] other info that might help us debug this:
[ 1284.861450][ T8253] 
[ 1284.861962][ T8253] 
[ 1284.861962][ T8253] rcu_scheduler_active = 2, debug_locks = 1
[ 1284.862355][ T8253] no locks held by smcrouted/8253.
[ 1284.862624][ T8253] 
[ 1284.862624][ T8253] stack backtrace:
[ 1284.862964][ T8253] CPU: 0 UID: 0 PID: 8253 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1284.863412][ T8253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1284.863736][ T8253] Call Trace:
[ 1284.863940][ T8253]  <TASK>
[ 1284.864082][ T8253]  dump_stack_lvl+0xb0/0xd0
[ 1284.864355][ T8253]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1284.864630][ T8253]  ip6mr_get_table+0x142/0x190
[ 1284.864901][ T8253]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1284.865162][ T8253]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1284.865499][ T8253]  ? __lock_release+0x103/0x460
[ 1284.865755][ T8253]  ? __might_fault+0x11b/0x170
[ 1284.866023][ T8253]  ? trace_lock_acquire+0x14d/0x1f0
[ 1284.866297][ T8253]  ? __might_fault+0xc3/0x170
[ 1284.866548][ T8253]  ? lock_acquire+0x32/0xc0
[ 1284.866808][ T8253]  ? __might_fault+0xc3/0x170
[ 1284.867081][ T8253]  ? __might_fault+0x11b/0x170
[ 1284.867353][ T8253]  do_ipv6_setsockopt+0x705/0x34e0
[ 1284.867616][ T8253]  ? __lock_release+0x10/0x460
[ 1284.867883][ T8253]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1284.868143][ T8253]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1284.868411][ T8253]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1284.868664][ T8253]  ? validate_chain+0x1fe/0xae0
[ 1284.868921][ T8253]  ? is_bpf_text_address+0x67/0x120
[ 1284.869187][ T8253]  ? __pfx_validate_chain+0x10/0x10
[ 1284.869440][ T8253]  ? hlock_class+0x4e/0x130
[ 1284.869694][ T8253]  ? mark_lock+0x38/0x3e0
[ 1284.869908][ T8253]  ? __lock_acquire+0xb3f/0x1580
[ 1284.870171][ T8253]  ? find_held_lock+0x2c/0x110
[ 1284.870455][ T8253]  ? ipv6_setsockopt+0x7f/0xe0
[ 1284.870722][ T8253]  ipv6_setsockopt+0x7f/0xe0
[ 1284.870983][ T8253]  rawv6_setsockopt+0xb7/0x550
[ 1284.871248][ T8253]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1284.871495][ T8253]  ? __lock_acquire+0xb3f/0x1580
[ 1284.871763][ T8253]  ? kfree+0x2d/0x340
[ 1284.871972][ T8253]  do_sock_setsockopt+0x149/0x3a0
[ 1284.872249][ T8253]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1284.872499][ T8253]  ? __lock_release+0x103/0x460
[ 1284.872765][ T8253]  ? fd_install+0x1d1/0x5a0
[ 1284.873029][ T8253]  ? trace_lock_acquire+0x14d/0x1f0
[ 1284.873298][ T8253]  ? fdget+0x52/0x1e0
[ 1284.873496][ T8253]  __sys_setsockopt+0x104/0x1a0
[ 1284.873765][ T8253]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1284.874024][ T8253]  ? __sys_socket+0x168/0x1e0
[ 1284.874300][ T8253]  ? __pfx___sys_socket+0x10/0x10
[ 1284.874568][ T8253]  ? do_user_addr_fault+0x374/0xe30
[ 1284.874839][ T8253]  __x64_sys_setsockopt+0xbd/0x160
[ 1284.875103][ T8253]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1284.875429][ T8253]  do_syscall_64+0xc1/0x1d0
[ 1284.875688][ T8253]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1284.876012][ T8253] RIP: 0033:0x7f58287da91e
[ 1284.876290][ T8253] 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
[ 1284.877222][ T8253] RSP: 002b:00007ffeaeebe998 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1284.877618][ T8253] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f58287da91e
[ 1284.878011][ T8253] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1284.878408][ T8253] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1284.878774][ T8253] R10: 00007ffeaeebe9bc R11: 0000000000000246 R12: 0000000000000000
[ 1284.879157][ T8253] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f58288df000
[ 1284.879567][ T8253]  </TASK>
[ 1284.884798][ T8253] veth0: entered allmulticast mode
[ 1284.885641][ T8253] veth1: entered allmulticast mode
[ 1284.888096][ T8253] veth2: entered allmulticast mode
[ 1284.888619][ T8253] veth3: entered allmulticast mode
[ 1303.678149][ T8253] veth0: left allmulticast mode
[ 1303.678533][ T8253] veth1: left allmulticast mode
[ 1303.678778][ T8253] veth2: left allmulticast mode
[ 1303.679071][ T8253] veth3: left allmulticast mode