[ 1905.488096][ T8318] 
[ 1905.488224][ T8318] =============================
[ 1905.488395][ T8318] WARNING: suspicious RCU usage
[ 1905.488663][ T8318] 6.12.0-rc6-virtme #1 Not tainted
[ 1905.488829][ T8318] -----------------------------
[ 1905.488999][ T8318] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1905.489240][ T8318] 
[ 1905.489240][ T8318] other info that might help us debug this:
[ 1905.489240][ T8318] 
[ 1905.489667][ T8318] 
[ 1905.489667][ T8318] rcu_scheduler_active = 2, debug_locks = 1
[ 1905.489942][ T8318] no locks held by smcrouted/8318.
[ 1905.490122][ T8318] 
[ 1905.490122][ T8318] stack backtrace:
[ 1905.490328][ T8318] CPU: 0 UID: 0 PID: 8318 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1905.490625][ T8318] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1905.490998][ T8318] Call Trace:
[ 1905.491131][ T8318]  <TASK>
[ 1905.491229][ T8318]  dump_stack_lvl+0xb0/0xd0
[ 1905.491408][ T8318]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1905.491574][ T8318]  ip6mr_get_table+0x142/0x190
[ 1905.491748][ T8318]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1905.491933][ T8318]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1905.492139][ T8318]  ? __lock_release+0x103/0x460
[ 1905.492297][ T8318]  ? __might_fault+0x11b/0x170
[ 1905.492459][ T8318]  ? trace_lock_acquire+0x14d/0x1f0
[ 1905.492624][ T8318]  ? __might_fault+0xc3/0x170
[ 1905.492785][ T8318]  ? lock_acquire+0x32/0xc0
[ 1905.492959][ T8318]  ? __might_fault+0xc3/0x170
[ 1905.493124][ T8318]  ? __might_fault+0x11b/0x170
[ 1905.493301][ T8318]  do_ipv6_setsockopt+0x705/0x34e0
[ 1905.493464][ T8318]  ? __lock_release+0xe0/0x460
[ 1905.493633][ T8318]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1905.493792][ T8318]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1905.493958][ T8318]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1905.494124][ T8318]  ? validate_chain+0x1fe/0xae0
[ 1905.494306][ T8318]  ? is_bpf_text_address+0x67/0x120
[ 1905.494481][ T8318]  ? __pfx_validate_chain+0x10/0x10
[ 1905.494644][ T8318]  ? hlock_class+0x4e/0x130
[ 1905.494805][ T8318]  ? mark_lock+0x38/0x3e0
[ 1905.494933][ T8318]  ? __lock_acquire+0xb3f/0x1580
[ 1905.495107][ T8318]  ? find_held_lock+0x2c/0x110
[ 1905.495272][ T8318]  ? ipv6_setsockopt+0x7f/0xe0
[ 1905.495429][ T8318]  ipv6_setsockopt+0x7f/0xe0
[ 1905.495591][ T8318]  rawv6_setsockopt+0xb7/0x550
[ 1905.495761][ T8318]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1905.495923][ T8318]  ? __lock_acquire+0xb3f/0x1580
[ 1905.496085][ T8318]  ? kfree+0x2d/0x340
[ 1905.496212][ T8318]  do_sock_setsockopt+0x149/0x3a0
[ 1905.496376][ T8318]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1905.496534][ T8318]  ? __lock_release+0x103/0x460
[ 1905.496688][ T8318]  ? fd_install+0x1d1/0x5a0
[ 1905.496854][ T8318]  ? trace_lock_acquire+0x14d/0x1f0
[ 1905.497029][ T8318]  ? fdget+0x52/0x1e0
[ 1905.497155][ T8318]  __sys_setsockopt+0x104/0x1a0
[ 1905.497330][ T8318]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1905.497491][ T8318]  ? __sys_socket+0x168/0x1e0
[ 1905.497655][ T8318]  ? __pfx___sys_socket+0x10/0x10
[ 1905.497830][ T8318]  __x64_sys_setsockopt+0xbd/0x160
[ 1905.497991][ T8318]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1905.498195][ T8318]  do_syscall_64+0xc1/0x1d0
[ 1905.498380][ T8318]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1905.498582][ T8318] RIP: 0033:0x7fae6b15391e
[ 1905.498760][ T8318] 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
[ 1905.499341][ T8318] RSP: 002b:00007ffc771f3988 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1905.499593][ T8318] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fae6b15391e
[ 1905.499846][ T8318] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1905.500107][ T8318] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1905.500354][ T8318] R10: 00007ffc771f39ac R11: 0000000000000246 R12: 0000000000000000
[ 1905.500618][ T8318] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007fae6b258000
[ 1905.500875][ T8318]  </TASK>
[ 1905.512193][ T8318] veth0: entered allmulticast mode
[ 1905.512788][ T8318] veth1: entered allmulticast mode
[ 1905.513152][ T8318] veth2: entered allmulticast mode
[ 1905.513478][ T8318] veth3: entered allmulticast mode
[ 1934.720872][ T8318] veth0: left allmulticast mode
[ 1934.721212][ T8318] veth1: left allmulticast mode
[ 1934.721459][ T8318] veth2: left allmulticast mode
[ 1934.721716][ T8318] veth3: left allmulticast mode