[ 1888.401746][T10303] 
[ 1888.401876][T10303] =============================
[ 1888.402030][T10303] WARNING: suspicious RCU usage
[ 1888.402186][T10303] 6.12.0-rc6-virtme #1 Not tainted
[ 1888.402336][T10303] -----------------------------
[ 1888.402482][T10303] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1888.402721][T10303] 
[ 1888.402721][T10303] other info that might help us debug this:
[ 1888.402721][T10303] 
[ 1888.403013][T10303] 
[ 1888.403013][T10303] rcu_scheduler_active = 2, debug_locks = 1
[ 1888.403258][T10303] no locks held by smcrouted/10303.
[ 1888.403425][T10303] 
[ 1888.403425][T10303] stack backtrace:
[ 1888.403611][T10303] CPU: 2 UID: 0 PID: 10303 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1888.403878][T10303] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1888.404516][T10303] Call Trace:
[ 1888.404636][T10303]  <TASK>
[ 1888.404722][T10303]  dump_stack_lvl+0xb0/0xd0
[ 1888.404889][T10303]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1888.405041][T10303]  ip6mr_get_table+0x142/0x190
[ 1888.405193][T10303]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1888.405344][T10303]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1888.405539][T10303]  ? __lock_release+0x103/0x460
[ 1888.405690][T10303]  ? __might_fault+0x11b/0x170
[ 1888.405839][T10303]  ? trace_lock_acquire+0x14d/0x1f0
[ 1888.405991][T10303]  ? __might_fault+0xc3/0x170
[ 1888.406138][T10303]  ? lock_acquire+0x32/0xc0
[ 1888.406284][T10303]  ? __might_fault+0xc3/0x170
[ 1888.406433][T10303]  ? __might_fault+0x11b/0x170
[ 1888.406587][T10303]  do_ipv6_setsockopt+0x705/0x34e0
[ 1888.406738][T10303]  ? __lock_release+0xe0/0x460
[ 1888.406894][T10303]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1888.407071][T10303]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1888.407226][T10303]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1888.407372][T10303]  ? validate_chain+0x1fe/0xae0
[ 1888.407533][T10303]  ? is_bpf_text_address+0x67/0x120
[ 1888.407689][T10303]  ? __pfx_validate_chain+0x10/0x10
[ 1888.407841][T10303]  ? hlock_class+0x4e/0x130
[ 1888.407992][T10303]  ? mark_lock+0x38/0x3e0
[ 1888.408113][T10303]  ? __lock_acquire+0xb3f/0x1580
[ 1888.408273][T10303]  ? find_held_lock+0x2c/0x110
[ 1888.408429][T10303]  ? ipv6_setsockopt+0x7f/0xe0
[ 1888.408585][T10303]  ipv6_setsockopt+0x7f/0xe0
[ 1888.408736][T10303]  rawv6_setsockopt+0xb7/0x550
[ 1888.408888][T10303]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1888.409039][T10303]  ? __lock_acquire+0xb3f/0x1580
[ 1888.409190][T10303]  ? kfree+0x2d/0x340
[ 1888.409318][T10303]  do_sock_setsockopt+0x149/0x3a0
[ 1888.409469][T10303]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1888.409622][T10303]  ? __lock_release+0x103/0x460
[ 1888.409769][T10303]  ? fd_install+0x1d1/0x5a0
[ 1888.409922][T10303]  ? trace_lock_acquire+0x14d/0x1f0
[ 1888.410074][T10303]  ? fdget+0x52/0x1e0
[ 1888.410192][T10303]  __sys_setsockopt+0x104/0x1a0
[ 1888.410344][T10303]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1888.410492][T10303]  ? __sys_socket+0x168/0x1e0
[ 1888.410646][T10303]  ? __pfx___sys_socket+0x10/0x10
[ 1888.410811][T10303]  __x64_sys_setsockopt+0xbd/0x160
[ 1888.410965][T10303]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1888.411147][T10303]  do_syscall_64+0xc1/0x1d0
[ 1888.411303][T10303]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1888.411487][T10303] RIP: 0033:0x7f692489391e
[ 1888.411658][T10303] 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
[ 1888.412193][T10303] RSP: 002b:00007ffefe84eea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1888.412418][T10303] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f692489391e
[ 1888.412646][T10303] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1888.412868][T10303] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1888.413092][T10303] R10: 00007ffefe84eecc R11: 0000000000000246 R12: 0000000000000000
[ 1888.413323][T10303] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f6924998000
[ 1888.413557][T10303]  </TASK>
[ 1888.425626][T10303] veth0: entered allmulticast mode
[ 1888.427362][T10303] veth1: entered allmulticast mode
[ 1888.427944][T10303] veth2: entered allmulticast mode
[ 1888.428468][T10303] veth3: entered allmulticast mode
[ 1888.429016][T10303] veth4: entered allmulticast mode
[ 1888.429555][T10303] veth5: entered allmulticast mode
[ 1934.891156][T10303] veth0: left allmulticast mode
[ 1934.891464][T10303] veth1: left allmulticast mode
[ 1934.891691][T10303] veth2: left allmulticast mode
[ 1934.891948][T10303] veth3: left allmulticast mode
[ 1934.892186][T10303] veth4: left allmulticast mode
[ 1934.892415][T10303] veth5: left allmulticast mode