[ 1717.888424][ T9754] 
[ 1717.888559][ T9754] =============================
[ 1717.888712][ T9754] WARNING: suspicious RCU usage
[ 1717.888873][ T9754] 6.12.0-rc6-virtme #1 Not tainted
[ 1717.889035][ T9754] -----------------------------
[ 1717.889186][ T9754] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1717.889423][ T9754] 
[ 1717.889423][ T9754] other info that might help us debug this:
[ 1717.889423][ T9754] 
[ 1717.889730][ T9754] 
[ 1717.889730][ T9754] rcu_scheduler_active = 2, debug_locks = 1
[ 1717.889957][ T9754] no locks held by smcrouted/9754.
[ 1717.890115][ T9754] 
[ 1717.890115][ T9754] stack backtrace:
[ 1717.890319][ T9754] CPU: 0 UID: 0 PID: 9754 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1717.890598][ T9754] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1717.890950][ T9754] Call Trace:
[ 1717.891074][ T9754]  <TASK>
[ 1717.891166][ T9754]  dump_stack_lvl+0xb0/0xd0
[ 1717.891375][ T9754]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1717.891545][ T9754]  ip6mr_get_table+0x142/0x190
[ 1717.891711][ T9754]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1717.891873][ T9754]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1717.892081][ T9754]  ? __lock_release+0x103/0x460
[ 1717.892239][ T9754]  ? __might_fault+0x11b/0x170
[ 1717.892402][ T9754]  ? trace_lock_acquire+0x14d/0x1f0
[ 1717.892585][ T9754]  ? __might_fault+0xc3/0x170
[ 1717.892745][ T9754]  ? lock_acquire+0x32/0xc0
[ 1717.892906][ T9754]  ? __might_fault+0xc3/0x170
[ 1717.893077][ T9754]  ? __might_fault+0x11b/0x170
[ 1717.893248][ T9754]  do_ipv6_setsockopt+0x705/0x34e0
[ 1717.893412][ T9754]  ? __lock_release+0xe0/0x460
[ 1717.893589][ T9754]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1717.893747][ T9754]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1717.893912][ T9754]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1717.894080][ T9754]  ? validate_chain+0x1fe/0xae0
[ 1717.894241][ T9754]  ? is_bpf_text_address+0x67/0x120
[ 1717.894411][ T9754]  ? __pfx_validate_chain+0x10/0x10
[ 1717.894573][ T9754]  ? hlock_class+0x4e/0x130
[ 1717.894730][ T9754]  ? mark_lock+0x38/0x3e0
[ 1717.894857][ T9754]  ? __lock_acquire+0xb3f/0x1580
[ 1717.895033][ T9754]  ? find_held_lock+0x2c/0x110
[ 1717.895207][ T9754]  ? ipv6_setsockopt+0x7f/0xe0
[ 1717.895381][ T9754]  ipv6_setsockopt+0x7f/0xe0
[ 1717.895546][ T9754]  rawv6_setsockopt+0xb7/0x550
[ 1717.895711][ T9754]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1717.895867][ T9754]  ? __lock_acquire+0xb3f/0x1580
[ 1717.896036][ T9754]  ? kfree+0x2d/0x340
[ 1717.896169][ T9754]  do_sock_setsockopt+0x149/0x3a0
[ 1717.896330][ T9754]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1717.896484][ T9754]  ? __lock_release+0x103/0x460
[ 1717.896643][ T9754]  ? fd_install+0x1d1/0x5a0
[ 1717.896805][ T9754]  ? trace_lock_acquire+0x14d/0x1f0
[ 1717.896969][ T9754]  ? fdget+0x52/0x1e0
[ 1717.897099][ T9754]  __sys_setsockopt+0x104/0x1a0
[ 1717.897264][ T9754]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1717.897436][ T9754]  ? __sys_socket+0x168/0x1e0
[ 1717.897595][ T9754]  ? __pfx___sys_socket+0x10/0x10
[ 1717.897764][ T9754]  __x64_sys_setsockopt+0xbd/0x160
[ 1717.897935][ T9754]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1717.898203][ T9754]  do_syscall_64+0xc1/0x1d0
[ 1717.898372][ T9754]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1717.898574][ T9754] RIP: 0033:0x7f488159d91e
[ 1717.898748][ T9754] 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
[ 1717.899316][ T9754] RSP: 002b:00007ffe5b203598 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1717.899567][ T9754] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f488159d91e
[ 1717.899803][ T9754] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1717.900056][ T9754] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1717.900305][ T9754] R10: 00007ffe5b2035bc R11: 0000000000000246 R12: 0000000000000000
[ 1717.900546][ T9754] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f48816a2000
[ 1717.900790][ T9754]  </TASK>
[ 1717.906060][ T9754] veth0: entered allmulticast mode
[ 1717.907427][ T9754] veth1: entered allmulticast mode
[ 1717.908376][ T9754] veth2: entered allmulticast mode
[ 1717.908722][ T9754] veth3: entered allmulticast mode
[ 1717.909032][ T9754] veth4: entered allmulticast mode
[ 1717.909351][ T9754] veth5: entered allmulticast mode
[ 1764.213378][ T9754] veth0: left allmulticast mode
[ 1764.213707][ T9754] veth1: left allmulticast mode
[ 1764.213940][ T9754] veth2: left allmulticast mode
[ 1764.214169][ T9754] veth3: left allmulticast mode
[ 1764.214397][ T9754] veth4: left allmulticast mode
[ 1764.214650][ T9754] veth5: left allmulticast mode