[ 1836.438115][ T5824] 
[ 1836.438235][ T5824] =============================
[ 1836.438392][ T5824] WARNING: suspicious RCU usage
[ 1836.438569][ T5824] 6.12.0-rc5-virtme #1 Not tainted
[ 1836.438725][ T5824] -----------------------------
[ 1836.438875][ T5824] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1836.439097][ T5824] 
[ 1836.439097][ T5824] other info that might help us debug this:
[ 1836.439097][ T5824] 
[ 1836.439385][ T5824] 
[ 1836.439385][ T5824] rcu_scheduler_active = 2, debug_locks = 1
[ 1836.439632][ T5824] no locks held by smcrouted/5824.
[ 1836.439840][ T5824] 
[ 1836.439840][ T5824] stack backtrace:
[ 1836.440029][ T5824] CPU: 1 UID: 0 PID: 5824 Comm: smcrouted Not tainted 6.12.0-rc5-virtme #1
[ 1836.440294][ T5824] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1836.440663][ T5824] Call Trace:
[ 1836.440783][ T5824]  <TASK>
[ 1836.440865][ T5824]  dump_stack_lvl+0xb0/0xd0
[ 1836.441029][ T5824]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1836.441459][ T5824]  ip6mr_get_table+0x142/0x190
[ 1836.441616][ T5824]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1836.441804][ T5824]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1836.442013][ T5824]  ? __lock_release+0x103/0x460
[ 1836.442173][ T5824]  ? __might_fault+0x11b/0x170
[ 1836.442348][ T5824]  ? trace_lock_acquire+0x14d/0x1f0
[ 1836.442541][ T5824]  ? __might_fault+0xc3/0x170
[ 1836.442700][ T5824]  ? lock_acquire+0x32/0xc0
[ 1836.442851][ T5824]  ? __might_fault+0xc3/0x170
[ 1836.443000][ T5824]  ? __might_fault+0x11b/0x170
[ 1836.443157][ T5824]  do_ipv6_setsockopt+0x705/0x34e0
[ 1836.443319][ T5824]  ? __lock_release+0x50/0x460
[ 1836.443471][ T5824]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1836.443619][ T5824]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1836.443770][ T5824]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1836.443919][ T5824]  ? validate_chain+0x1fe/0xae0
[ 1836.444095][ T5824]  ? is_bpf_text_address+0x67/0x120
[ 1836.444263][ T5824]  ? __pfx_validate_chain+0x10/0x10
[ 1836.444427][ T5824]  ? hlock_class+0x4e/0x130
[ 1836.444611][ T5824]  ? mark_lock+0x38/0x3e0
[ 1836.444735][ T5824]  ? __lock_acquire+0xb3f/0x1580
[ 1836.444894][ T5824]  ? find_held_lock+0x2c/0x110
[ 1836.445053][ T5824]  ? ipv6_setsockopt+0x7f/0xe0
[ 1836.445204][ T5824]  ipv6_setsockopt+0x7f/0xe0
[ 1836.445355][ T5824]  rawv6_setsockopt+0xb7/0x550
[ 1836.445509][ T5824]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1836.445677][ T5824]  ? __lock_acquire+0xb3f/0x1580
[ 1836.445843][ T5824]  ? kfree+0x2d/0x340
[ 1836.445976][ T5824]  do_sock_setsockopt+0x149/0x3a0
[ 1836.446140][ T5824]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1836.446301][ T5824]  ? __lock_release+0x103/0x460
[ 1836.446458][ T5824]  ? fd_install+0x1d1/0x5a0
[ 1836.446627][ T5824]  ? trace_lock_acquire+0x14d/0x1f0
[ 1836.446794][ T5824]  ? fdget+0x52/0x1e0
[ 1836.446916][ T5824]  __sys_setsockopt+0x104/0x1a0
[ 1836.447081][ T5824]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1836.447247][ T5824]  ? __sys_socket+0x168/0x1e0
[ 1836.447410][ T5824]  ? __pfx___sys_socket+0x10/0x10
[ 1836.447581][ T5824]  __x64_sys_setsockopt+0xbd/0x160
[ 1836.447741][ T5824]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1836.447945][ T5824]  do_syscall_64+0xc1/0x1d0
[ 1836.448110][ T5824]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1836.448310][ T5824] RIP: 0033:0x7f73c4d3391e
[ 1836.448481][ T5824] 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
[ 1836.449076][ T5824] RSP: 002b:00007ffc3d6b1608 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1836.449327][ T5824] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f73c4d3391e
[ 1836.449572][ T5824] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1836.449823][ T5824] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1836.450064][ T5824] R10: 00007ffc3d6b162c R11: 0000000000000246 R12: 0000000000000000
[ 1836.450315][ T5824] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f73c4e38000
[ 1836.450586][ T5824]  </TASK>
[ 1836.468811][ T5824] veth0: entered allmulticast mode
[ 1836.469400][ T5824] veth1: entered allmulticast mode
[ 1836.469769][ T5824] veth2: entered allmulticast mode
[ 1836.470090][ T5824] veth3: entered allmulticast mode
[ 1866.122504][ T5824] veth0: left allmulticast mode
[ 1866.123094][ T5824] veth1: left allmulticast mode
[ 1866.123325][ T5824] veth2: left allmulticast mode
[ 1866.123590][ T5824] veth3: left allmulticast mode