[ 1910.984685][T12958] 
[ 1910.984813][T12958] =============================
[ 1910.984971][T12958] WARNING: suspicious RCU usage
[ 1910.985156][T12958] 6.12.0-rc6-virtme #1 Not tainted
[ 1910.985320][T12958] -----------------------------
[ 1910.985475][T12958] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1910.985727][T12958] 
[ 1910.985727][T12958] other info that might help us debug this:
[ 1910.985727][T12958] 
[ 1910.986025][T12958] 
[ 1910.986025][T12958] rcu_scheduler_active = 2, debug_locks = 1
[ 1910.986339][T12958] no locks held by smcrouted/12958.
[ 1910.986501][T12958] 
[ 1910.986501][T12958] stack backtrace:
[ 1910.986715][T12958] CPU: 2 UID: 0 PID: 12958 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1910.986987][T12958] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1910.987338][T12958] Call Trace:
[ 1910.987456][T12958]  <TASK>
[ 1910.987545][T12958]  dump_stack_lvl+0xb0/0xd0
[ 1910.987716][T12958]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1910.987896][T12958]  ip6mr_get_table+0x142/0x190
[ 1910.988051][T12958]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1910.988208][T12958]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1910.988402][T12958]  ? __lock_release+0x103/0x460
[ 1910.988550][T12958]  ? __might_fault+0x11b/0x170
[ 1910.988701][T12958]  ? trace_lock_acquire+0x14d/0x1f0
[ 1910.988857][T12958]  ? __might_fault+0xc3/0x170
[ 1910.989008][T12958]  ? lock_acquire+0x32/0xc0
[ 1910.989154][T12958]  ? __might_fault+0xc3/0x170
[ 1910.989304][T12958]  ? __might_fault+0x11b/0x170
[ 1910.989512][T12958]  do_ipv6_setsockopt+0x705/0x34e0
[ 1910.989670][T12958]  ? __lock_release+0xe0/0x460
[ 1910.989823][T12958]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1910.989970][T12958]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1910.990124][T12958]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1910.990280][T12958]  ? validate_chain+0x1fe/0xae0
[ 1910.990430][T12958]  ? is_bpf_text_address+0x67/0x120
[ 1910.990586][T12958]  ? __pfx_validate_chain+0x10/0x10
[ 1910.990734][T12958]  ? hlock_class+0x4e/0x130
[ 1910.990887][T12958]  ? mark_lock+0x38/0x3e0
[ 1910.991006][T12958]  ? __lock_acquire+0xb3f/0x1580
[ 1910.991163][T12958]  ? find_held_lock+0x2c/0x110
[ 1910.991321][T12958]  ? ipv6_setsockopt+0x7f/0xe0
[ 1910.991470][T12958]  ipv6_setsockopt+0x7f/0xe0
[ 1910.991656][T12958]  rawv6_setsockopt+0xb7/0x550
[ 1910.991811][T12958]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1910.991957][T12958]  ? __lock_acquire+0xb3f/0x1580
[ 1910.992107][T12958]  ? kfree+0x2d/0x340
[ 1910.992228][T12958]  do_sock_setsockopt+0x149/0x3a0
[ 1910.992382][T12958]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1910.992532][T12958]  ? __lock_release+0x103/0x460
[ 1910.992679][T12958]  ? fd_install+0x1d1/0x5a0
[ 1910.992839][T12958]  ? trace_lock_acquire+0x14d/0x1f0
[ 1910.992996][T12958]  ? fdget+0x52/0x1e0
[ 1910.993113][T12958]  __sys_setsockopt+0x104/0x1a0
[ 1910.993266][T12958]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1910.993414][T12958]  ? __sys_socket+0x168/0x1e0
[ 1910.993570][T12958]  ? __pfx___sys_socket+0x10/0x10
[ 1910.993728][T12958]  __x64_sys_setsockopt+0xbd/0x160
[ 1910.993879][T12958]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1910.994084][T12958]  do_syscall_64+0xc1/0x1d0
[ 1910.994304][T12958]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1910.994493][T12958] RIP: 0033:0x7f88d526091e
[ 1910.994650][T12958] 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
[ 1910.995169][T12958] RSP: 002b:00007fff0575f1d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1910.995399][T12958] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f88d526091e
[ 1910.995638][T12958] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1910.995877][T12958] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1910.996099][T12958] R10: 00007fff0575f1fc R11: 0000000000000246 R12: 0000000000000000
[ 1910.996322][T12958] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f88d5365000
[ 1910.996563][T12958]  </TASK>
[ 1911.002914][T12958] veth0: entered allmulticast mode
[ 1911.003468][T12958] veth1: entered allmulticast mode
[ 1911.003834][T12958] veth2: entered allmulticast mode
[ 1911.004189][T12958] veth3: entered allmulticast mode
[ 1940.653965][T12958] veth0: left allmulticast mode
[ 1940.654333][T12958] veth1: left allmulticast mode
[ 1940.654586][T12958] veth2: left allmulticast mode
[ 1940.654853][T12958] veth3: left allmulticast mode