[ 1286.654076][ T8587] 
[ 1286.654282][ T8587] =============================
[ 1286.654509][ T8587] WARNING: suspicious RCU usage
[ 1286.654701][ T8587] 6.12.0-rc7-virtme #1 Not tainted
[ 1286.654887][ T8587] -----------------------------
[ 1286.655070][ T8587] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1286.655336][ T8587] 
[ 1286.655336][ T8587] other info that might help us debug this:
[ 1286.655336][ T8587] 
[ 1286.656458][ T8587] 
[ 1286.656458][ T8587] rcu_scheduler_active = 2, debug_locks = 1
[ 1286.656841][ T8587] no locks held by smcrouted/8587.
[ 1286.657115][ T8587] 
[ 1286.657115][ T8587] stack backtrace:
[ 1286.657382][ T8587] CPU: 2 UID: 0 PID: 8587 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1286.657681][ T8587] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1286.657892][ T8587] Call Trace:
[ 1286.658027][ T8587]  <TASK>
[ 1286.658123][ T8587]  dump_stack_lvl+0xb0/0xd0
[ 1286.658314][ T8587]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1286.658489][ T8587]  ip6mr_get_table+0x142/0x190
[ 1286.658662][ T8587]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1286.658834][ T8587]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1286.659049][ T8587]  ? __lock_release+0x103/0x460
[ 1286.659215][ T8587]  ? __might_fault+0x11b/0x170
[ 1286.659384][ T8587]  ? trace_lock_acquire+0x14d/0x1f0
[ 1286.659568][ T8587]  ? __might_fault+0xc3/0x170
[ 1286.659761][ T8587]  ? lock_acquire+0x32/0xc0
[ 1286.659933][ T8587]  ? __might_fault+0xc3/0x170
[ 1286.660110][ T8587]  ? __might_fault+0x11b/0x170
[ 1286.660330][ T8587]  do_ipv6_setsockopt+0x705/0x34e0
[ 1286.660507][ T8587]  ? __lock_release+0x40/0x460
[ 1286.660712][ T8587]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1286.660887][ T8587]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1286.661071][ T8587]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1286.661253][ T8587]  ? validate_chain+0x1fe/0xae0
[ 1286.661436][ T8587]  ? is_bpf_text_address+0x67/0x120
[ 1286.661627][ T8587]  ? __pfx_validate_chain+0x10/0x10
[ 1286.661798][ T8587]  ? hlock_class+0x4e/0x130
[ 1286.661973][ T8587]  ? mark_lock+0x38/0x3e0
[ 1286.662110][ T8587]  ? __lock_acquire+0xb3f/0x1580
[ 1286.662315][ T8587]  ? find_held_lock+0x2c/0x110
[ 1286.662504][ T8587]  ? ipv6_setsockopt+0x7f/0xe0
[ 1286.662674][ T8587]  ipv6_setsockopt+0x7f/0xe0
[ 1286.662856][ T8587]  rawv6_setsockopt+0xb7/0x550
[ 1286.663031][ T8587]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1286.663203][ T8587]  ? __lock_acquire+0xb3f/0x1580
[ 1286.663375][ T8587]  ? kfree+0x2d/0x340
[ 1286.663512][ T8587]  do_sock_setsockopt+0x149/0x3a0
[ 1286.663685][ T8587]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1286.663857][ T8587]  ? __lock_release+0x103/0x460
[ 1286.664030][ T8587]  ? fd_install+0x1d1/0x5a0
[ 1286.664206][ T8587]  ? trace_lock_acquire+0x14d/0x1f0
[ 1286.664379][ T8587]  ? fdget+0x52/0x1e0
[ 1286.664515][ T8587]  __sys_setsockopt+0x104/0x1a0
[ 1286.664694][ T8587]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1286.664865][ T8587]  ? __sys_socket+0x168/0x1e0
[ 1286.665045][ T8587]  ? __pfx___sys_socket+0x10/0x10
[ 1286.665221][ T8587]  ? do_user_addr_fault+0x374/0xe30
[ 1286.665402][ T8587]  __x64_sys_setsockopt+0xbd/0x160
[ 1286.665580][ T8587]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1286.665798][ T8587]  do_syscall_64+0xc1/0x1d0
[ 1286.665974][ T8587]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1286.666187][ T8587] RIP: 0033:0x7ff50ed3291e
[ 1286.666373][ T8587] 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
[ 1286.666983][ T8587] RSP: 002b:00007ffd2bcd8798 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1286.667263][ T8587] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff50ed3291e
[ 1286.667532][ T8587] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1286.667790][ T8587] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1286.668068][ T8587] R10: 00007ffd2bcd87bc R11: 0000000000000246 R12: 0000000000000000
[ 1286.668333][ T8587] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007ff50ee37000
[ 1286.668630][ T8587]  </TASK>
[ 1286.682292][ T8587] veth0: entered allmulticast mode
[ 1286.683244][ T8587] veth1: entered allmulticast mode
[ 1286.683815][ T8587] veth2: entered allmulticast mode
[ 1286.684252][ T8587] veth3: entered allmulticast mode
[ 1305.631650][ T8587] veth0: left allmulticast mode
[ 1305.632088][ T8587] veth1: left allmulticast mode
[ 1305.632342][ T8587] veth2: left allmulticast mode
[ 1305.632629][ T8587] veth3: left allmulticast mode