[ 1830.917241][ T6114] 
[ 1830.918987][ T6114] =============================
[ 1830.919239][ T6114] WARNING: suspicious RCU usage
[ 1830.919699][ T6114] 6.12.0-rc6-virtme #1 Not tainted
[ 1830.919954][ T6114] -----------------------------
[ 1830.920431][ T6114] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1830.920991][ T6114] 
[ 1830.920991][ T6114] other info that might help us debug this:
[ 1830.920991][ T6114] 
[ 1830.921714][ T6114] 
[ 1830.921714][ T6114] rcu_scheduler_active = 2, debug_locks = 1
[ 1830.922275][ T6114] no locks held by smcrouted/6114.
[ 1830.922686][ T6114] 
[ 1830.922686][ T6114] stack backtrace:
[ 1830.922993][ T6114] CPU: 2 UID: 0 PID: 6114 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1830.923426][ T6114] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1830.923980][ T6114] Call Trace:
[ 1830.924174][ T6114]  <TASK>
[ 1830.924309][ T6114]  dump_stack_lvl+0xb0/0xd0
[ 1830.924576][ T6114]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1830.924827][ T6114]  ip6mr_get_table+0x142/0x190
[ 1830.925075][ T6114]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1830.925314][ T6114]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1830.925642][ T6114]  ? __lock_release+0x103/0x460
[ 1830.925898][ T6114]  ? __might_fault+0x11b/0x170
[ 1830.926162][ T6114]  ? trace_lock_acquire+0x14d/0x1f0
[ 1830.926424][ T6114]  ? __might_fault+0xc3/0x170
[ 1830.926682][ T6114]  ? lock_acquire+0x32/0xc0
[ 1830.926935][ T6114]  ? __might_fault+0xc3/0x170
[ 1830.927168][ T6114]  ? __might_fault+0x11b/0x170
[ 1830.927410][ T6114]  do_ipv6_setsockopt+0x705/0x34e0
[ 1830.927682][ T6114]  ? __lock_release+0xe0/0x460
[ 1830.927921][ T6114]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1830.928155][ T6114]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1830.928383][ T6114]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1830.928630][ T6114]  ? validate_chain+0x1fe/0xae0
[ 1830.928866][ T6114]  ? is_bpf_text_address+0x67/0x120
[ 1830.929117][ T6114]  ? __pfx_validate_chain+0x10/0x10
[ 1830.929350][ T6114]  ? hlock_class+0x4e/0x130
[ 1830.929604][ T6114]  ? mark_lock+0x38/0x3e0
[ 1830.929803][ T6114]  ? __lock_acquire+0xb3f/0x1580
[ 1830.930045][ T6114]  ? find_held_lock+0x2c/0x110
[ 1830.930286][ T6114]  ? ipv6_setsockopt+0x7f/0xe0
[ 1830.930522][ T6114]  ipv6_setsockopt+0x7f/0xe0
[ 1830.930762][ T6114]  rawv6_setsockopt+0xb7/0x550
[ 1830.931003][ T6114]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1830.931228][ T6114]  ? __lock_acquire+0xb3f/0x1580
[ 1830.931463][ T6114]  ? kfree+0x2d/0x340
[ 1830.931667][ T6114]  do_sock_setsockopt+0x149/0x3a0
[ 1830.931909][ T6114]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1830.932139][ T6114]  ? __lock_release+0x103/0x460
[ 1830.932360][ T6114]  ? fd_install+0x1d1/0x5a0
[ 1830.932612][ T6114]  ? trace_lock_acquire+0x14d/0x1f0
[ 1830.932859][ T6114]  ? fdget+0x52/0x1e0
[ 1830.933043][ T6114]  __sys_setsockopt+0x104/0x1a0
[ 1830.933277][ T6114]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1830.933519][ T6114]  ? __sys_socket+0x168/0x1e0
[ 1830.933760][ T6114]  ? __pfx___sys_socket+0x10/0x10
[ 1830.934007][ T6114]  __x64_sys_setsockopt+0xbd/0x160
[ 1830.934237][ T6114]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1830.934529][ T6114]  do_syscall_64+0xc1/0x1d0
[ 1830.934789][ T6114]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1830.935082][ T6114] RIP: 0033:0x7f844eec691e
[ 1830.935326][ T6114] 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
[ 1830.936162][ T6114] RSP: 002b:00007fff45b80028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1830.936530][ T6114] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f844eec691e
[ 1830.936892][ T6114] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1830.937262][ T6114] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1830.937627][ T6114] R10: 00007fff45b8004c R11: 0000000000000246 R12: 0000000000000000
[ 1830.937982][ T6114] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f844efcb000
[ 1830.938356][ T6114]  </TASK>
[ 1830.945539][ T6114] veth0: entered allmulticast mode
[ 1830.946104][ T6114] veth1: entered allmulticast mode
[ 1830.946483][ T6114] veth2: entered allmulticast mode
[ 1830.946809][ T6114] veth3: entered allmulticast mode
[ 1860.879202][ T6114] veth0: left allmulticast mode
[ 1860.879588][ T6114] veth1: left allmulticast mode
[ 1860.879878][ T6114] veth2: left allmulticast mode
[ 1860.880127][ T6114] veth3: left allmulticast mode