[ 1307.965044][ T8200] 
[ 1307.965194][ T8200] =============================
[ 1307.966275][ T8200] WARNING: suspicious RCU usage
[ 1307.966445][ T8200] 6.12.0-virtme #1 Not tainted
[ 1307.966609][ T8200] -----------------------------
[ 1307.966768][ T8200] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1307.967003][ T8200] 
[ 1307.967003][ T8200] other info that might help us debug this:
[ 1307.967003][ T8200] 
[ 1307.967396][ T8200] 
[ 1307.967396][ T8200] rcu_scheduler_active = 2, debug_locks = 1
[ 1307.967634][ T8200] no locks held by smcrouted/8200.
[ 1307.967811][ T8200] 
[ 1307.967811][ T8200] stack backtrace:
[ 1307.968021][ T8200] CPU: 3 UID: 0 PID: 8200 Comm: smcrouted Not tainted 6.12.0-virtme #1
[ 1307.968276][ T8200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1307.968480][ T8200] Call Trace:
[ 1307.968610][ T8200]  <TASK>
[ 1307.968697][ T8200]  dump_stack_lvl+0xb0/0xd0
[ 1307.968880][ T8200]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1307.969055][ T8200]  ip6mr_get_table+0x142/0x190
[ 1307.969221][ T8200]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1307.969446][ T8200]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1307.969669][ T8200]  ? __lock_release+0x103/0x460
[ 1307.969831][ T8200]  ? __might_fault+0x11b/0x170
[ 1307.969999][ T8200]  ? trace_lock_acquire+0x14d/0x1f0
[ 1307.970164][ T8200]  ? __might_fault+0xc3/0x170
[ 1307.970327][ T8200]  ? lock_acquire+0x32/0xc0
[ 1307.970487][ T8200]  ? __might_fault+0xc3/0x170
[ 1307.970661][ T8200]  ? __might_fault+0x11b/0x170
[ 1307.970825][ T8200]  do_ipv6_setsockopt+0x705/0x34e0
[ 1307.970996][ T8200]  ? validate_chain+0x130/0xae0
[ 1307.971164][ T8200]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1307.971335][ T8200]  ? __pfx_validate_chain+0x10/0x10
[ 1307.971498][ T8200]  ? hlock_class+0x4e/0x130
[ 1307.971661][ T8200]  ? mark_lock+0x38/0x3e0
[ 1307.971792][ T8200]  ? __lock_acquire+0xb9a/0x1680
[ 1307.971977][ T8200]  ? find_held_lock+0x2c/0x110
[ 1307.972211][ T8200]  ? __lock_release+0x103/0x460
[ 1307.972466][ T8200]  ? __create_object+0x5e/0xb0
[ 1307.972710][ T8200]  ? __pfx___lock_release+0x10/0x10
[ 1307.972964][ T8200]  ? __pfx_validate_chain+0x10/0x10
[ 1307.973204][ T8200]  ? hlock_class+0x4e/0x130
[ 1307.973397][ T8200]  ? mark_lock+0x38/0x3e0
[ 1307.973526][ T8200]  ? ipv6_setsockopt+0x7f/0xe0
[ 1307.973765][ T8200]  ipv6_setsockopt+0x7f/0xe0
[ 1307.974005][ T8200]  rawv6_setsockopt+0xb7/0x550
[ 1307.974260][ T8200]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1307.974496][ T8200]  ? find_held_lock+0x2c/0x110
[ 1307.974750][ T8200]  ? kfree+0x2d/0x340
[ 1307.974951][ T8200]  ? __lock_release+0x103/0x460
[ 1307.975215][ T8200]  ? fd_install+0x1d1/0x5a0
[ 1307.975468][ T8200]  do_sock_setsockopt+0x149/0x3a0
[ 1307.975727][ T8200]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1307.976007][ T8200]  __sys_setsockopt+0xec/0x160
[ 1307.976277][ T8200]  __x64_sys_setsockopt+0xbd/0x160
[ 1307.976543][ T8200]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1307.976870][ T8200]  do_syscall_64+0xc1/0x1d0
[ 1307.977143][ T8200]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1307.977463][ T8200] RIP: 0033:0x7fcb8e80191e
[ 1307.977742][ T8200] 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
[ 1307.978652][ T8200] RSP: 002b:00007ffe36bc4258 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1307.979027][ T8200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcb8e80191e
[ 1307.979423][ T8200] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1307.979819][ T8200] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1307.980215][ T8200] R10: 00007ffe36bc427c R11: 0000000000000246 R12: 0000000000000000
[ 1307.980614][ T8200] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007fcb8e906000
[ 1307.981036][ T8200]  </TASK>
[ 1307.984807][ T8200] veth0: entered allmulticast mode
[ 1307.985498][ T8200] veth1: entered allmulticast mode
[ 1307.985881][ T8200] veth2: entered allmulticast mode
[ 1307.986237][ T8200] veth3: entered allmulticast mode
[ 1307.987129][ T8200] veth4: entered allmulticast mode
[ 1307.987528][ T8200] veth5: entered allmulticast mode
[ 1333.772403][ T8200] veth0: left allmulticast mode
[ 1333.772772][ T8200] veth1: left allmulticast mode
[ 1333.773020][ T8200] veth2: left allmulticast mode
[ 1333.773279][ T8200] veth3: left allmulticast mode
[ 1333.773522][ T8200] veth4: left allmulticast mode
[ 1333.773764][ T8200] veth5: left allmulticast mode