[ 1294.300900][ T8546] 
[ 1294.301167][ T8546] =============================
[ 1294.301662][ T8546] WARNING: suspicious RCU usage
[ 1294.302154][ T8546] 6.12.0-rc7-virtme #1 Not tainted
[ 1294.302644][ T8546] -----------------------------
[ 1294.303115][ T8546] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1294.303747][ T8546] 
[ 1294.303747][ T8546] other info that might help us debug this:
[ 1294.303747][ T8546] 
[ 1294.304482][ T8546] 
[ 1294.304482][ T8546] rcu_scheduler_active = 2, debug_locks = 1
[ 1294.305056][ T8546] no locks held by smcrouted/8546.
[ 1294.305536][ T8546] 
[ 1294.305536][ T8546] stack backtrace:
[ 1294.305982][ T8546] CPU: 2 UID: 0 PID: 8546 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1294.306450][ T8546] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1294.306801][ T8546] Call Trace:
[ 1294.307022][ T8546]  <TASK>
[ 1294.307171][ T8546]  dump_stack_lvl+0xb0/0xd0
[ 1294.307449][ T8546]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1294.307723][ T8546]  ip6mr_get_table+0x142/0x190
[ 1294.308003][ T8546]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1294.308287][ T8546]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1294.308631][ T8546]  ? __lock_release+0x103/0x460
[ 1294.308901][ T8546]  ? __might_fault+0x11b/0x170
[ 1294.309178][ T8546]  ? trace_lock_acquire+0x14d/0x1f0
[ 1294.309451][ T8546]  ? __might_fault+0xc3/0x170
[ 1294.309710][ T8546]  ? lock_acquire+0x32/0xc0
[ 1294.309977][ T8546]  ? __might_fault+0xc3/0x170
[ 1294.310244][ T8546]  ? __might_fault+0x11b/0x170
[ 1294.310539][ T8546]  do_ipv6_setsockopt+0x705/0x34e0
[ 1294.310823][ T8546]  ? __lock_release+0x10/0x460
[ 1294.311084][ T8546]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1294.311345][ T8546]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1294.311611][ T8546]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1294.311869][ T8546]  ? validate_chain+0x1fe/0xae0
[ 1294.312126][ T8546]  ? is_bpf_text_address+0x67/0x120
[ 1294.312404][ T8546]  ? __pfx_validate_chain+0x10/0x10
[ 1294.312662][ T8546]  ? hlock_class+0x4e/0x130
[ 1294.312928][ T8546]  ? mark_lock+0x38/0x3e0
[ 1294.313137][ T8546]  ? __lock_acquire+0xb3f/0x1580
[ 1294.313418][ T8546]  ? find_held_lock+0x2c/0x110
[ 1294.313703][ T8546]  ? ipv6_setsockopt+0x7f/0xe0
[ 1294.313965][ T8546]  ipv6_setsockopt+0x7f/0xe0
[ 1294.314232][ T8546]  rawv6_setsockopt+0xb7/0x550
[ 1294.314516][ T8546]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1294.314790][ T8546]  ? __lock_acquire+0xb3f/0x1580
[ 1294.315063][ T8546]  ? kfree+0x2d/0x340
[ 1294.315277][ T8546]  do_sock_setsockopt+0x149/0x3a0
[ 1294.315554][ T8546]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1294.315813][ T8546]  ? __lock_release+0x103/0x460
[ 1294.316073][ T8546]  ? fd_install+0x1d1/0x5a0
[ 1294.316341][ T8546]  ? trace_lock_acquire+0x14d/0x1f0
[ 1294.316617][ T8546]  ? fdget+0x52/0x1e0
[ 1294.316831][ T8546]  __sys_setsockopt+0x104/0x1a0
[ 1294.317113][ T8546]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1294.317381][ T8546]  ? __sys_socket+0x168/0x1e0
[ 1294.317653][ T8546]  ? __pfx___sys_socket+0x10/0x10
[ 1294.317923][ T8546]  ? do_user_addr_fault+0x374/0xe30
[ 1294.318196][ T8546]  __x64_sys_setsockopt+0xbd/0x160
[ 1294.318475][ T8546]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1294.318810][ T8546]  do_syscall_64+0xc1/0x1d0
[ 1294.319086][ T8546]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1294.319432][ T8546] RIP: 0033:0x7f7a52abe91e
[ 1294.319718][ T8546] 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
[ 1294.320654][ T8546] RSP: 002b:00007ffd44649b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1294.321061][ T8546] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7a52abe91e
[ 1294.321475][ T8546] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1294.321881][ T8546] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1294.322293][ T8546] R10: 00007ffd44649bac R11: 0000000000000246 R12: 0000000000000000
[ 1294.322697][ T8546] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f7a52bc3000
[ 1294.323149][ T8546]  </TASK>
[ 1294.341988][ T8546] veth0: entered allmulticast mode
[ 1294.342578][ T8546] veth1: entered allmulticast mode
[ 1294.342920][ T8546] veth2: entered allmulticast mode
[ 1294.343267][ T8546] veth3: entered allmulticast mode
[ 1312.857750][ T8546] veth0: left allmulticast mode
[ 1312.858079][ T8546] veth1: left allmulticast mode
[ 1312.858332][ T8546] veth2: left allmulticast mode
[ 1312.865141][ T8546] veth3: left allmulticast mode