[ 1919.796228][ T8431] 
[ 1919.796362][ T8431] =============================
[ 1919.796537][ T8431] WARNING: suspicious RCU usage
[ 1919.796698][ T8431] 6.12.0-rc6-virtme #1 Not tainted
[ 1919.797712][ T8431] -----------------------------
[ 1919.797921][ T8431] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1919.798161][ T8431] 
[ 1919.798161][ T8431] other info that might help us debug this:
[ 1919.798161][ T8431] 
[ 1919.798459][ T8431] 
[ 1919.798459][ T8431] rcu_scheduler_active = 2, debug_locks = 1
[ 1919.798691][ T8431] no locks held by smcrouted/8431.
[ 1919.798860][ T8431] 
[ 1919.798860][ T8431] stack backtrace:
[ 1919.799058][ T8431] CPU: 3 UID: 0 PID: 8431 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1919.799327][ T8431] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1919.799671][ T8431] Call Trace:
[ 1919.799798][ T8431]  <TASK>
[ 1919.799882][ T8431]  dump_stack_lvl+0xb0/0xd0
[ 1919.800048][ T8431]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1919.800207][ T8431]  ip6mr_get_table+0x142/0x190
[ 1919.800364][ T8431]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1919.800524][ T8431]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1919.800723][ T8431]  ? __lock_release+0x103/0x460
[ 1919.800876][ T8431]  ? __might_fault+0x11b/0x170
[ 1919.801035][ T8431]  ? trace_lock_acquire+0x14d/0x1f0
[ 1919.801477][ T8431]  ? __might_fault+0xc3/0x170
[ 1919.801624][ T8431]  ? lock_acquire+0x32/0xc0
[ 1919.801776][ T8431]  ? __might_fault+0xc3/0x170
[ 1919.801935][ T8431]  ? __might_fault+0x11b/0x170
[ 1919.802094][ T8431]  do_ipv6_setsockopt+0x705/0x34e0
[ 1919.802248][ T8431]  ? __lock_release+0xe0/0x460
[ 1919.802412][ T8431]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1919.802571][ T8431]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1919.802730][ T8431]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1919.802881][ T8431]  ? validate_chain+0x1fe/0xae0
[ 1919.803032][ T8431]  ? is_bpf_text_address+0x67/0x120
[ 1919.803193][ T8431]  ? __pfx_validate_chain+0x10/0x10
[ 1919.803344][ T8431]  ? hlock_class+0x4e/0x130
[ 1919.803494][ T8431]  ? mark_lock+0x38/0x3e0
[ 1919.803614][ T8431]  ? __lock_acquire+0xb3f/0x1580
[ 1919.803773][ T8431]  ? find_held_lock+0x2c/0x110
[ 1919.803934][ T8431]  ? ipv6_setsockopt+0x7f/0xe0
[ 1919.804090][ T8431]  ipv6_setsockopt+0x7f/0xe0
[ 1919.804246][ T8431]  rawv6_setsockopt+0xb7/0x550
[ 1919.804403][ T8431]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1919.804567][ T8431]  ? __lock_acquire+0xb3f/0x1580
[ 1919.804719][ T8431]  ? kfree+0x2d/0x340
[ 1919.804841][ T8431]  do_sock_setsockopt+0x149/0x3a0
[ 1919.804994][ T8431]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1919.805148][ T8431]  ? __lock_release+0x103/0x460
[ 1919.805298][ T8431]  ? fd_install+0x1d1/0x5a0
[ 1919.805454][ T8431]  ? trace_lock_acquire+0x14d/0x1f0
[ 1919.805609][ T8431]  ? fdget+0x52/0x1e0
[ 1919.805731][ T8431]  __sys_setsockopt+0x104/0x1a0
[ 1919.805887][ T8431]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1919.806041][ T8431]  ? __sys_socket+0x168/0x1e0
[ 1919.806193][ T8431]  ? __pfx___sys_socket+0x10/0x10
[ 1919.806351][ T8431]  __x64_sys_setsockopt+0xbd/0x160
[ 1919.806506][ T8431]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1919.806711][ T8431]  do_syscall_64+0xc1/0x1d0
[ 1919.806868][ T8431]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1919.807051][ T8431] RIP: 0033:0x7fec921d691e
[ 1919.807216][ T8431] 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
[ 1919.807752][ T8431] RSP: 002b:00007ffec7b628b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1919.807986][ T8431] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fec921d691e
[ 1919.808215][ T8431] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1919.808443][ T8431] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1919.808671][ T8431] R10: 00007ffec7b628dc R11: 0000000000000246 R12: 0000000000000000
[ 1919.808900][ T8431] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007fec922db000
[ 1919.809141][ T8431]  </TASK>
[ 1919.815166][ T8431] veth0: entered allmulticast mode
[ 1919.815667][ T8431] veth1: entered allmulticast mode
[ 1919.817320][ T8431] veth2: entered allmulticast mode
[ 1919.817641][ T8431] veth3: entered allmulticast mode
[ 1949.079212][ T8431] veth0: left allmulticast mode
[ 1949.079511][ T8431] veth1: left allmulticast mode
[ 1949.079786][ T8431] veth2: left allmulticast mode
[ 1949.080017][ T8431] veth3: left allmulticast mode