[ 1829.328989][T12456] 
[ 1829.329189][T12456] =============================
[ 1829.329450][T12456] WARNING: suspicious RCU usage
[ 1829.329697][T12456] 6.12.0-rc6-virtme #1 Not tainted
[ 1829.330948][T12456] -----------------------------
[ 1829.331202][T12456] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1829.331564][T12456] 
[ 1829.331564][T12456] other info that might help us debug this:
[ 1829.331564][T12456] 
[ 1829.332025][T12456] 
[ 1829.332025][T12456] rcu_scheduler_active = 2, debug_locks = 1
[ 1829.332380][T12456] no locks held by smcrouted/12456.
[ 1829.332636][T12456] 
[ 1829.332636][T12456] stack backtrace:
[ 1829.332926][T12456] CPU: 3 UID: 0 PID: 12456 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1829.333335][T12456] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1829.333858][T12456] Call Trace:
[ 1829.334068][T12456]  <TASK>
[ 1829.334201][T12456]  dump_stack_lvl+0xb0/0xd0
[ 1829.334451][T12456]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1829.334696][T12456]  ip6mr_get_table+0x142/0x190
[ 1829.334943][T12456]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1829.335193][T12456]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1829.335497][T12456]  ? __lock_release+0x103/0x460
[ 1829.335735][T12456]  ? __might_fault+0x11b/0x170
[ 1829.335967][T12456]  ? trace_lock_acquire+0x14d/0x1f0
[ 1829.336206][T12456]  ? __might_fault+0xc3/0x170
[ 1829.336462][T12456]  ? lock_acquire+0x32/0xc0
[ 1829.336698][T12456]  ? __might_fault+0xc3/0x170
[ 1829.336918][T12456]  ? __might_fault+0x11b/0x170
[ 1829.337109][T12456]  do_ipv6_setsockopt+0x705/0x34e0
[ 1829.337263][T12456]  ? __lock_release+0xe0/0x460
[ 1829.337420][T12456]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1829.337576][T12456]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1829.337735][T12456]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1829.337947][T12456]  ? validate_chain+0x1fe/0xae0
[ 1829.338205][T12456]  ? is_bpf_text_address+0x67/0x120
[ 1829.338481][T12456]  ? __pfx_validate_chain+0x10/0x10
[ 1829.338743][T12456]  ? hlock_class+0x4e/0x130
[ 1829.338999][T12456]  ? mark_lock+0x38/0x3e0
[ 1829.339202][T12456]  ? __lock_acquire+0xb3f/0x1580
[ 1829.339471][T12456]  ? find_held_lock+0x2c/0x110
[ 1829.339684][T12456]  ? ipv6_setsockopt+0x7f/0xe0
[ 1829.339870][T12456]  ipv6_setsockopt+0x7f/0xe0
[ 1829.340031][T12456]  rawv6_setsockopt+0xb7/0x550
[ 1829.340188][T12456]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1829.340345][T12456]  ? __lock_acquire+0xb3f/0x1580
[ 1829.340500][T12456]  ? kfree+0x2d/0x340
[ 1829.340633][T12456]  do_sock_setsockopt+0x149/0x3a0
[ 1829.340788][T12456]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1829.340947][T12456]  ? __lock_release+0x103/0x460
[ 1829.341101][T12456]  ? fd_install+0x1d1/0x5a0
[ 1829.341262][T12456]  ? trace_lock_acquire+0x14d/0x1f0
[ 1829.341418][T12456]  ? fdget+0x52/0x1e0
[ 1829.341540][T12456]  __sys_setsockopt+0x104/0x1a0
[ 1829.341696][T12456]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1829.341889][T12456]  ? __sys_socket+0x168/0x1e0
[ 1829.342141][T12456]  ? __pfx___sys_socket+0x10/0x10
[ 1829.342406][T12456]  __x64_sys_setsockopt+0xbd/0x160
[ 1829.342656][T12456]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1829.342983][T12456]  do_syscall_64+0xc1/0x1d0
[ 1829.343242][T12456]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1829.343560][T12456] RIP: 0033:0x7f735526491e
[ 1829.343829][T12456] 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
[ 1829.344633][T12456] RSP: 002b:00007ffd4d55d878 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1829.344884][T12456] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f735526491e
[ 1829.345123][T12456] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1829.345350][T12456] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1829.345579][T12456] R10: 00007ffd4d55d89c R11: 0000000000000246 R12: 0000000000000000
[ 1829.345818][T12456] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f7355369000
[ 1829.346063][T12456]  </TASK>
[ 1829.352741][T12456] veth0: entered allmulticast mode
[ 1829.353304][T12456] veth1: entered allmulticast mode
[ 1829.353641][T12456] veth2: entered allmulticast mode
[ 1829.353968][T12456] veth3: entered allmulticast mode
[ 1859.302846][T12456] veth0: left allmulticast mode
[ 1859.303147][T12456] veth1: left allmulticast mode
[ 1859.303384][T12456] veth2: left allmulticast mode
[ 1859.304263][T12456] veth3: left allmulticast mode