[ 1307.527257][ T8916] 
[ 1307.527466][ T8916] =============================
[ 1307.527733][ T8916] WARNING: suspicious RCU usage
[ 1307.527981][ T8916] 6.12.0-rc7-virtme #1 Not tainted
[ 1307.528221][ T8916] -----------------------------
[ 1307.528501][ T8916] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1307.528875][ T8916] 
[ 1307.528875][ T8916] other info that might help us debug this:
[ 1307.528875][ T8916] 
[ 1307.529367][ T8916] 
[ 1307.529367][ T8916] rcu_scheduler_active = 2, debug_locks = 1
[ 1307.529768][ T8916] no locks held by smcrouted/8916.
[ 1307.529965][ T8916] 
[ 1307.529965][ T8916] stack backtrace:
[ 1307.530198][ T8916] CPU: 3 UID: 0 PID: 8916 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1307.530640][ T8916] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1307.530969][ T8916] Call Trace:
[ 1307.531165][ T8916]  <TASK>
[ 1307.531306][ T8916]  dump_stack_lvl+0xb0/0xd0
[ 1307.531577][ T8916]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1307.531848][ T8916]  ip6mr_get_table+0x142/0x190
[ 1307.532108][ T8916]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1307.532379][ T8916]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1307.532712][ T8916]  ? __lock_release+0x103/0x460
[ 1307.532970][ T8916]  ? __might_fault+0x11b/0x170
[ 1307.533227][ T8916]  ? trace_lock_acquire+0x14d/0x1f0
[ 1307.533514][ T8916]  ? __might_fault+0xc3/0x170
[ 1307.533768][ T8916]  ? lock_acquire+0x32/0xc0
[ 1307.534017][ T8916]  ? __might_fault+0xc3/0x170
[ 1307.534271][ T8916]  ? __might_fault+0x11b/0x170
[ 1307.534524][ T8916]  do_ipv6_setsockopt+0x705/0x34e0
[ 1307.534714][ T8916]  ? __lock_release+0x10/0x460
[ 1307.534882][ T8916]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1307.535114][ T8916]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1307.535374][ T8916]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1307.535617][ T8916]  ? validate_chain+0x1fe/0xae0
[ 1307.535899][ T8916]  ? is_bpf_text_address+0x67/0x120
[ 1307.536151][ T8916]  ? __pfx_validate_chain+0x10/0x10
[ 1307.536436][ T8916]  ? hlock_class+0x4e/0x130
[ 1307.536661][ T8916]  ? mark_lock+0x38/0x3e0
[ 1307.536858][ T8916]  ? __lock_acquire+0xb3f/0x1580
[ 1307.537123][ T8916]  ? find_held_lock+0x2c/0x110
[ 1307.537340][ T8916]  ? ipv6_setsockopt+0x7f/0xe0
[ 1307.537515][ T8916]  ipv6_setsockopt+0x7f/0xe0
[ 1307.537681][ T8916]  rawv6_setsockopt+0xb7/0x550
[ 1307.537851][ T8916]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1307.538091][ T8916]  ? __lock_acquire+0xb3f/0x1580
[ 1307.538371][ T8916]  ? kfree+0x2d/0x340
[ 1307.538584][ T8916]  do_sock_setsockopt+0x149/0x3a0
[ 1307.538835][ T8916]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1307.539093][ T8916]  ? __lock_release+0x103/0x460
[ 1307.539348][ T8916]  ? fd_install+0x1d1/0x5a0
[ 1307.539613][ T8916]  ? trace_lock_acquire+0x14d/0x1f0
[ 1307.539874][ T8916]  ? fdget+0x52/0x1e0
[ 1307.540083][ T8916]  __sys_setsockopt+0x104/0x1a0
[ 1307.540358][ T8916]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1307.540625][ T8916]  ? __sys_socket+0x168/0x1e0
[ 1307.540876][ T8916]  ? __pfx___sys_socket+0x10/0x10
[ 1307.541126][ T8916]  ? do_user_addr_fault+0x374/0xe30
[ 1307.541388][ T8916]  __x64_sys_setsockopt+0xbd/0x160
[ 1307.541648][ T8916]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1307.541956][ T8916]  do_syscall_64+0xc1/0x1d0
[ 1307.542213][ T8916]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1307.542528][ T8916] RIP: 0033:0x7f10983ae91e
[ 1307.542789][ T8916] 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
[ 1307.543656][ T8916] RSP: 002b:00007ffcc6c7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1307.544033][ T8916] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f10983ae91e
[ 1307.544397][ T8916] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1307.544803][ T8916] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1307.545101][ T8916] R10: 00007ffcc6c7b01c R11: 0000000000000246 R12: 0000000000000000
[ 1307.545475][ T8916] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f10984b3000
[ 1307.545877][ T8916]  </TASK>
[ 1307.561255][ T8916] veth0: entered allmulticast mode
[ 1307.562023][ T8916] veth1: entered allmulticast mode
[ 1307.562525][ T8916] veth2: entered allmulticast mode
[ 1307.562962][ T8916] veth3: entered allmulticast mode
[ 1326.450953][ T8916] veth0: left allmulticast mode
[ 1326.451299][ T8916] veth1: left allmulticast mode
[ 1326.451946][ T8916] veth2: left allmulticast mode
[ 1326.452204][ T8916] veth3: left allmulticast mode