[ 1287.465034][T15526] 
[ 1287.465188][T15526] =============================
[ 1287.465369][T15526] WARNING: suspicious RCU usage
[ 1287.466106][T15526] 6.12.0-rc6-virtme #1 Not tainted
[ 1287.466288][T15526] -----------------------------
[ 1287.466470][T15526] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1287.466711][T15526] 
[ 1287.466711][T15526] other info that might help us debug this:
[ 1287.466711][T15526] 
[ 1287.467048][T15526] 
[ 1287.467048][T15526] rcu_scheduler_active = 2, debug_locks = 1
[ 1287.467306][T15526] no locks held by smcrouted/15526.
[ 1287.467492][T15526] 
[ 1287.467492][T15526] stack backtrace:
[ 1287.467708][T15526] CPU: 3 UID: 0 PID: 15526 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1287.468021][T15526] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1287.468245][T15526] Call Trace:
[ 1287.468398][T15526]  <TASK>
[ 1287.468495][T15526]  dump_stack_lvl+0xb0/0xd0
[ 1287.468688][T15526]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1287.468869][T15526]  ip6mr_get_table+0x142/0x190
[ 1287.469062][T15526]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1287.469240][T15526]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1287.469475][T15526]  ? __lock_release+0x103/0x460
[ 1287.469653][T15526]  ? __might_fault+0x11b/0x170
[ 1287.469838][T15526]  ? trace_lock_acquire+0x14d/0x1f0
[ 1287.470026][T15526]  ? __might_fault+0xc3/0x170
[ 1287.470202][T15526]  ? lock_acquire+0x32/0xc0
[ 1287.470385][T15526]  ? __might_fault+0xc3/0x170
[ 1287.470562][T15526]  ? __might_fault+0x11b/0x170
[ 1287.470729][T15526]  do_ipv6_setsockopt+0x705/0x34e0
[ 1287.470904][T15526]  ? __lock_release+0xe0/0x460
[ 1287.471081][T15526]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1287.471252][T15526]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1287.471427][T15526]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1287.471598][T15526]  ? validate_chain+0x1fe/0xae0
[ 1287.471781][T15526]  ? is_bpf_text_address+0x67/0x120
[ 1287.471964][T15526]  ? __pfx_validate_chain+0x10/0x10
[ 1287.472141][T15526]  ? hlock_class+0x4e/0x130
[ 1287.472316][T15526]  ? mark_lock+0x38/0x3e0
[ 1287.472455][T15526]  ? __lock_acquire+0xb3f/0x1580
[ 1287.472640][T15526]  ? find_held_lock+0x2c/0x110
[ 1287.472821][T15526]  ? ipv6_setsockopt+0x7f/0xe0
[ 1287.472992][T15526]  ipv6_setsockopt+0x7f/0xe0
[ 1287.473165][T15526]  rawv6_setsockopt+0xb7/0x550
[ 1287.473347][T15526]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1287.473520][T15526]  ? __lock_acquire+0xb3f/0x1580
[ 1287.473695][T15526]  ? kfree+0x2d/0x340
[ 1287.473833][T15526]  do_sock_setsockopt+0x149/0x3a0
[ 1287.474003][T15526]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1287.474171][T15526]  ? __lock_release+0x103/0x460
[ 1287.474339][T15526]  ? fd_install+0x1d1/0x5a0
[ 1287.474516][T15526]  ? trace_lock_acquire+0x14d/0x1f0
[ 1287.474693][T15526]  ? fdget+0x52/0x1e0
[ 1287.474826][T15526]  __sys_setsockopt+0x104/0x1a0
[ 1287.475004][T15526]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1287.475171][T15526]  ? __sys_socket+0x168/0x1e0
[ 1287.475342][T15526]  ? __pfx___sys_socket+0x10/0x10
[ 1287.475509][T15526]  ? do_user_addr_fault+0x374/0xe30
[ 1287.475684][T15526]  __x64_sys_setsockopt+0xbd/0x160
[ 1287.475856][T15526]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1287.476077][T15526]  do_syscall_64+0xc1/0x1d0
[ 1287.476255][T15526]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1287.476469][T15526] RIP: 0033:0x7fc5e240c91e
[ 1287.476664][T15526] 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
[ 1287.477254][T15526] RSP: 002b:00007ffe3c662b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1287.477523][T15526] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc5e240c91e
[ 1287.477779][T15526] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1287.478038][T15526] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1287.478292][T15526] R10: 00007ffe3c662bac R11: 0000000000000246 R12: 0000000000000000
[ 1287.478571][T15526] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007fc5e2511000
[ 1287.478844][T15526]  </TASK>
[ 1287.483697][T15526] veth0: entered allmulticast mode
[ 1287.484277][T15526] veth1: entered allmulticast mode
[ 1287.484646][T15526] veth2: entered allmulticast mode
[ 1287.484978][T15526] veth3: entered allmulticast mode
[ 1306.175850][T15526] veth0: left allmulticast mode
[ 1306.176213][T15526] veth1: left allmulticast mode
[ 1306.176515][T15526] veth2: left allmulticast mode
[ 1306.176773][T15526] veth3: left allmulticast mode