[ 1890.794773][T14531] 
[ 1890.794921][T14531] =============================
[ 1890.795099][T14531] WARNING: suspicious RCU usage
[ 1890.795262][T14531] 6.12.0-rc6-virtme #1 Not tainted
[ 1890.795423][T14531] -----------------------------
[ 1890.795597][T14531] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1890.795832][T14531] 
[ 1890.795832][T14531] other info that might help us debug this:
[ 1890.795832][T14531] 
[ 1890.796143][T14531] 
[ 1890.796143][T14531] rcu_scheduler_active = 2, debug_locks = 1
[ 1890.796379][T14531] no locks held by smcrouted/14531.
[ 1890.796549][T14531] 
[ 1890.796549][T14531] stack backtrace:
[ 1890.796748][T14531] CPU: 3 UID: 0 PID: 14531 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1890.797036][T14531] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1890.797385][T14531] Call Trace:
[ 1890.797510][T14531]  <TASK>
[ 1890.797600][T14531]  dump_stack_lvl+0xb0/0xd0
[ 1890.797785][T14531]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1890.797948][T14531]  ip6mr_get_table+0x142/0x190
[ 1890.798108][T14531]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1890.798271][T14531]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1890.798469][T14531]  ? __lock_release+0x103/0x460
[ 1890.798623][T14531]  ? __might_fault+0x11b/0x170
[ 1890.798784][T14531]  ? trace_lock_acquire+0x14d/0x1f0
[ 1890.798948][T14531]  ? __might_fault+0xc3/0x170
[ 1890.799109][T14531]  ? lock_acquire+0x32/0xc0
[ 1890.799268][T14531]  ? __might_fault+0xc3/0x170
[ 1890.799434][T14531]  ? __might_fault+0x11b/0x170
[ 1890.799599][T14531]  do_ipv6_setsockopt+0x705/0x34e0
[ 1890.799769][T14531]  ? __lock_release+0xe0/0x460
[ 1890.799931][T14531]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1890.800091][T14531]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1890.800262][T14531]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1890.800415][T14531]  ? validate_chain+0x1fe/0xae0
[ 1890.800581][T14531]  ? is_bpf_text_address+0x67/0x120
[ 1890.800744][T14531]  ? __pfx_validate_chain+0x10/0x10
[ 1890.800905][T14531]  ? hlock_class+0x4e/0x130
[ 1890.801070][T14531]  ? mark_lock+0x38/0x3e0
[ 1890.801189][T14531]  ? __lock_acquire+0xb3f/0x1580
[ 1890.801369][T14531]  ? find_held_lock+0x2c/0x110
[ 1890.801529][T14531]  ? ipv6_setsockopt+0x7f/0xe0
[ 1890.801681][T14531]  ipv6_setsockopt+0x7f/0xe0
[ 1890.801838][T14531]  rawv6_setsockopt+0xb7/0x550
[ 1890.801998][T14531]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1890.802150][T14531]  ? __lock_acquire+0xb3f/0x1580
[ 1890.802305][T14531]  ? kfree+0x2d/0x340
[ 1890.802430][T14531]  do_sock_setsockopt+0x149/0x3a0
[ 1890.802583][T14531]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1890.802734][T14531]  ? __lock_release+0x103/0x460
[ 1890.802894][T14531]  ? fd_install+0x1d1/0x5a0
[ 1890.803060][T14531]  ? trace_lock_acquire+0x14d/0x1f0
[ 1890.803215][T14531]  ? fdget+0x52/0x1e0
[ 1890.803334][T14531]  __sys_setsockopt+0x104/0x1a0
[ 1890.803490][T14531]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1890.803651][T14531]  ? __sys_socket+0x168/0x1e0
[ 1890.803808][T14531]  ? __pfx___sys_socket+0x10/0x10
[ 1890.803968][T14531]  __x64_sys_setsockopt+0xbd/0x160
[ 1890.804125][T14531]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1890.804314][T14531]  do_syscall_64+0xc1/0x1d0
[ 1890.804477][T14531]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1890.804673][T14531] RIP: 0033:0x7f115a4e791e
[ 1890.804835][T14531] 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
[ 1890.805379][T14531] RSP: 002b:00007fff68db2b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1890.805623][T14531] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f115a4e791e
[ 1890.805850][T14531] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1890.806083][T14531] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1890.806314][T14531] R10: 00007fff68db2b7c R11: 0000000000000246 R12: 0000000000000000
[ 1890.806541][T14531] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f115a5ec000
[ 1890.806794][T14531]  </TASK>
[ 1890.813837][T14531] veth0: entered allmulticast mode
[ 1890.814415][T14531] veth1: entered allmulticast mode
[ 1890.814750][T14531] veth2: entered allmulticast mode
[ 1890.815078][T14531] veth3: entered allmulticast mode
[ 1920.744665][T14531] veth0: left allmulticast mode
[ 1920.744988][T14531] veth1: left allmulticast mode
[ 1920.745380][T14531] veth2: left allmulticast mode
[ 1920.745627][T14531] veth3: left allmulticast mode