[ 1272.356783][T15280] 
[ 1272.356928][T15280] =============================
[ 1272.357098][T15280] WARNING: suspicious RCU usage
[ 1272.357260][T15280] 6.12.0-rc7-virtme #1 Not tainted
[ 1272.357417][T15280] -----------------------------
[ 1272.357610][T15280] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1272.357866][T15280] 
[ 1272.357866][T15280] other info that might help us debug this:
[ 1272.357866][T15280] 
[ 1272.358200][T15280] 
[ 1272.358200][T15280] rcu_scheduler_active = 2, debug_locks = 1
[ 1272.358465][T15280] no locks held by smcrouted/15280.
[ 1272.358765][T15280] 
[ 1272.358765][T15280] stack backtrace:
[ 1272.358980][T15280] CPU: 3 UID: 0 PID: 15280 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1272.359281][T15280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1272.359502][T15280] Call Trace:
[ 1272.359638][T15280]  <TASK>
[ 1272.359734][T15280]  dump_stack_lvl+0xb0/0xd0
[ 1272.359917][T15280]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1272.360094][T15280]  ip6mr_get_table+0x142/0x190
[ 1272.360267][T15280]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1272.360447][T15280]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1272.360666][T15280]  ? __lock_release+0x103/0x460
[ 1272.360831][T15280]  ? __might_fault+0x11b/0x170
[ 1272.360996][T15280]  ? trace_lock_acquire+0x14d/0x1f0
[ 1272.361167][T15280]  ? __might_fault+0xc3/0x170
[ 1272.361336][T15280]  ? lock_acquire+0x32/0xc0
[ 1272.361507][T15280]  ? __might_fault+0xc3/0x170
[ 1272.361671][T15280]  ? __might_fault+0x11b/0x170
[ 1272.361847][T15280]  do_ipv6_setsockopt+0x705/0x34e0
[ 1272.362011][T15280]  ? __lock_release+0x40/0x460
[ 1272.362176][T15280]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1272.362336][T15280]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1272.362505][T15280]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1272.362667][T15280]  ? validate_chain+0x1fe/0xae0
[ 1272.362836][T15280]  ? is_bpf_text_address+0x67/0x120
[ 1272.363007][T15280]  ? __pfx_validate_chain+0x10/0x10
[ 1272.363172][T15280]  ? hlock_class+0x4e/0x130
[ 1272.363347][T15280]  ? mark_lock+0x38/0x3e0
[ 1272.363484][T15280]  ? __lock_acquire+0xb3f/0x1580
[ 1272.363656][T15280]  ? find_held_lock+0x2c/0x110
[ 1272.363826][T15280]  ? ipv6_setsockopt+0x7f/0xe0
[ 1272.363990][T15280]  ipv6_setsockopt+0x7f/0xe0
[ 1272.364155][T15280]  rawv6_setsockopt+0xb7/0x550
[ 1272.364325][T15280]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1272.364489][T15280]  ? __lock_acquire+0xb3f/0x1580
[ 1272.364656][T15280]  ? kfree+0x2d/0x340
[ 1272.364784][T15280]  do_sock_setsockopt+0x149/0x3a0
[ 1272.364946][T15280]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1272.365109][T15280]  ? __lock_release+0x103/0x460
[ 1272.365269][T15280]  ? fd_install+0x1d1/0x5a0
[ 1272.365436][T15280]  ? trace_lock_acquire+0x14d/0x1f0
[ 1272.365607][T15280]  ? fdget+0x52/0x1e0
[ 1272.365737][T15280]  __sys_setsockopt+0x104/0x1a0
[ 1272.365904][T15280]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1272.366069][T15280]  ? __sys_socket+0x168/0x1e0
[ 1272.366231][T15280]  ? __pfx___sys_socket+0x10/0x10
[ 1272.366395][T15280]  ? do_user_addr_fault+0x374/0xe30
[ 1272.366563][T15280]  __x64_sys_setsockopt+0xbd/0x160
[ 1272.366724][T15280]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1272.366933][T15280]  do_syscall_64+0xc1/0x1d0
[ 1272.367102][T15280]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1272.367314][T15280] RIP: 0033:0x7fca3048891e
[ 1272.367486][T15280] 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
[ 1272.368050][T15280] RSP: 002b:00007ffc2fd70648 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1272.368303][T15280] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fca3048891e
[ 1272.368547][T15280] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1272.368793][T15280] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1272.369043][T15280] R10: 00007ffc2fd7066c R11: 0000000000000246 R12: 0000000000000000
[ 1272.369285][T15280] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007fca3058d000
[ 1272.369550][T15280]  </TASK>
[ 1272.376475][T15280] veth0: entered allmulticast mode
[ 1272.377151][T15280] veth1: entered allmulticast mode
[ 1272.377548][T15280] veth2: entered allmulticast mode
[ 1272.377914][T15280] veth3: entered allmulticast mode
[ 1291.153019][T15280] veth0: left allmulticast mode
[ 1291.153510][T15280] veth1: left allmulticast mode
[ 1291.153787][T15280] veth2: left allmulticast mode
[ 1291.154045][T15280] veth3: left allmulticast mode