[ 1293.961523][ T8961] 
[ 1293.961707][ T8961] =============================
[ 1293.961886][ T8961] WARNING: suspicious RCU usage
[ 1293.962073][ T8961] 6.12.0-rc6-virtme #1 Not tainted
[ 1293.962272][ T8961] -----------------------------
[ 1293.962485][ T8961] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1293.962736][ T8961] 
[ 1293.962736][ T8961] other info that might help us debug this:
[ 1293.962736][ T8961] 
[ 1293.963058][ T8961] 
[ 1293.963058][ T8961] rcu_scheduler_active = 2, debug_locks = 1
[ 1293.963323][ T8961] no locks held by smcrouted/8961.
[ 1293.963514][ T8961] 
[ 1293.963514][ T8961] stack backtrace:
[ 1293.963741][ T8961] CPU: 2 UID: 0 PID: 8961 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1293.964046][ T8961] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1293.964243][ T8961] Call Trace:
[ 1293.964374][ T8961]  <TASK>
[ 1293.964462][ T8961]  dump_stack_lvl+0xb0/0xd0
[ 1293.964643][ T8961]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1293.964810][ T8961]  ip6mr_get_table+0x142/0x190
[ 1293.964970][ T8961]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1293.965124][ T8961]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1293.965349][ T8961]  ? __lock_release+0x103/0x460
[ 1293.965503][ T8961]  ? __might_fault+0x11b/0x170
[ 1293.965662][ T8961]  ? trace_lock_acquire+0x14d/0x1f0
[ 1293.965822][ T8961]  ? __might_fault+0xc3/0x170
[ 1293.965976][ T8961]  ? lock_acquire+0x32/0xc0
[ 1293.966141][ T8961]  ? __might_fault+0xc3/0x170
[ 1293.966297][ T8961]  ? __might_fault+0x11b/0x170
[ 1293.966473][ T8961]  do_ipv6_setsockopt+0x705/0x34e0
[ 1293.966633][ T8961]  ? __lock_release+0xe0/0x460
[ 1293.966793][ T8961]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1293.966946][ T8961]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1293.967137][ T8961]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1293.967311][ T8961]  ? validate_chain+0x1fe/0xae0
[ 1293.967490][ T8961]  ? is_bpf_text_address+0x67/0x120
[ 1293.967664][ T8961]  ? __pfx_validate_chain+0x10/0x10
[ 1293.967844][ T8961]  ? hlock_class+0x4e/0x130
[ 1293.968026][ T8961]  ? mark_lock+0x38/0x3e0
[ 1293.968165][ T8961]  ? __lock_acquire+0xb3f/0x1580
[ 1293.968343][ T8961]  ? find_held_lock+0x2c/0x110
[ 1293.968520][ T8961]  ? ipv6_setsockopt+0x7f/0xe0
[ 1293.968707][ T8961]  ipv6_setsockopt+0x7f/0xe0
[ 1293.968887][ T8961]  rawv6_setsockopt+0xb7/0x550
[ 1293.969068][ T8961]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1293.969239][ T8961]  ? __lock_acquire+0xb3f/0x1580
[ 1293.969414][ T8961]  ? kfree+0x2d/0x340
[ 1293.969552][ T8961]  do_sock_setsockopt+0x149/0x3a0
[ 1293.969729][ T8961]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1293.969905][ T8961]  ? __lock_release+0x103/0x460
[ 1293.970074][ T8961]  ? fd_install+0x1d1/0x5a0
[ 1293.970253][ T8961]  ? trace_lock_acquire+0x14d/0x1f0
[ 1293.970442][ T8961]  ? fdget+0x52/0x1e0
[ 1293.970582][ T8961]  __sys_setsockopt+0x104/0x1a0
[ 1293.970772][ T8961]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1293.970944][ T8961]  ? __sys_socket+0x168/0x1e0
[ 1293.971122][ T8961]  ? __pfx___sys_socket+0x10/0x10
[ 1293.971305][ T8961]  ? do_user_addr_fault+0x374/0xe30
[ 1293.971485][ T8961]  __x64_sys_setsockopt+0xbd/0x160
[ 1293.971657][ T8961]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1293.971878][ T8961]  do_syscall_64+0xc1/0x1d0
[ 1293.972059][ T8961]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1293.972283][ T8961] RIP: 0033:0x7fc29ee6d91e
[ 1293.972476][ T8961] 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
[ 1293.973064][ T8961] RSP: 002b:00007ffcc3d541c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1293.973326][ T8961] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc29ee6d91e
[ 1293.973591][ T8961] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1293.973847][ T8961] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1293.974102][ T8961] R10: 00007ffcc3d541ec R11: 0000000000000246 R12: 0000000000000000
[ 1293.974356][ T8961] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007fc29ef72000
[ 1293.974626][ T8961]  </TASK>
[ 1293.987784][ T8961] veth0: entered allmulticast mode
[ 1293.988563][ T8961] veth1: entered allmulticast mode
[ 1293.988992][ T8961] veth2: entered allmulticast mode
[ 1293.989358][ T8961] veth3: entered allmulticast mode
[ 1312.660092][ T8961] veth0: left allmulticast mode
[ 1312.660445][ T8961] veth1: left allmulticast mode
[ 1312.660713][ T8961] veth2: left allmulticast mode
[ 1312.660961][ T8961] veth3: left allmulticast mode