[ 1304.307322][ T8435] 
[ 1304.307493][ T8435] =============================
[ 1304.307762][ T8435] WARNING: suspicious RCU usage
[ 1304.308110][ T8435] 6.12.0-rc7-virtme #1 Not tainted
[ 1304.308721][ T8435] -----------------------------
[ 1304.308996][ T8435] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1304.309435][ T8435] 
[ 1304.309435][ T8435] other info that might help us debug this:
[ 1304.309435][ T8435] 
[ 1304.309963][ T8435] 
[ 1304.309963][ T8435] rcu_scheduler_active = 2, debug_locks = 1
[ 1304.310384][ T8435] no locks held by smcrouted/8435.
[ 1304.310660][ T8435] 
[ 1304.310660][ T8435] stack backtrace:
[ 1304.310999][ T8435] CPU: 0 UID: 0 PID: 8435 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1304.311478][ T8435] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1304.311817][ T8435] Call Trace:
[ 1304.312035][ T8435]  <TASK>
[ 1304.312175][ T8435]  dump_stack_lvl+0xb0/0xd0
[ 1304.312465][ T8435]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1304.312756][ T8435]  ip6mr_get_table+0x142/0x190
[ 1304.313044][ T8435]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1304.313335][ T8435]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1304.313710][ T8435]  ? __lock_release+0x103/0x460
[ 1304.313983][ T8435]  ? __might_fault+0x11b/0x170
[ 1304.314263][ T8435]  ? trace_lock_acquire+0x14d/0x1f0
[ 1304.314549][ T8435]  ? __might_fault+0xc3/0x170
[ 1304.314823][ T8435]  ? lock_acquire+0x32/0xc0
[ 1304.315099][ T8435]  ? __might_fault+0xc3/0x170
[ 1304.315400][ T8435]  ? __might_fault+0x11b/0x170
[ 1304.315708][ T8435]  do_ipv6_setsockopt+0x705/0x34e0
[ 1304.315999][ T8435]  ? __lock_release+0x10/0x460
[ 1304.316282][ T8435]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1304.316564][ T8435]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1304.316848][ T8435]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1304.317138][ T8435]  ? validate_chain+0x1fe/0xae0
[ 1304.317420][ T8435]  ? is_bpf_text_address+0x67/0x120
[ 1304.317706][ T8435]  ? __pfx_validate_chain+0x10/0x10
[ 1304.317988][ T8435]  ? hlock_class+0x4e/0x130
[ 1304.318275][ T8435]  ? mark_lock+0x38/0x3e0
[ 1304.318495][ T8435]  ? __lock_acquire+0xb3f/0x1580
[ 1304.318793][ T8435]  ? find_held_lock+0x2c/0x110
[ 1304.319089][ T8435]  ? ipv6_setsockopt+0x7f/0xe0
[ 1304.319369][ T8435]  ipv6_setsockopt+0x7f/0xe0
[ 1304.319653][ T8435]  rawv6_setsockopt+0xb7/0x550
[ 1304.319938][ T8435]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1304.320213][ T8435]  ? __lock_acquire+0xb3f/0x1580
[ 1304.320661][ T8435]  ? kfree+0x2d/0x340
[ 1304.320887][ T8435]  do_sock_setsockopt+0x149/0x3a0
[ 1304.321178][ T8435]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1304.321456][ T8435]  ? __lock_release+0x103/0x460
[ 1304.321728][ T8435]  ? fd_install+0x1d1/0x5a0
[ 1304.322167][ T8435]  ? trace_lock_acquire+0x14d/0x1f0
[ 1304.322442][ T8435]  ? fdget+0x52/0x1e0
[ 1304.322659][ T8435]  __sys_setsockopt+0x104/0x1a0
[ 1304.322938][ T8435]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1304.323385][ T8435]  ? __sys_socket+0x168/0x1e0
[ 1304.323680][ T8435]  ? __pfx___sys_socket+0x10/0x10
[ 1304.323956][ T8435]  ? do_user_addr_fault+0x374/0xe30
[ 1304.324241][ T8435]  __x64_sys_setsockopt+0xbd/0x160
[ 1304.324507][ T8435]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1304.324844][ T8435]  do_syscall_64+0xc1/0x1d0
[ 1304.325124][ T8435]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1304.325487][ T8435] RIP: 0033:0x7f0fb999491e
[ 1304.325781][ T8435] 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
[ 1304.326730][ T8435] RSP: 002b:00007ffe0b6a75e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1304.327313][ T8435] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0fb999491e
[ 1304.327709][ T8435] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1304.328117][ T8435] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1304.328674][ T8435] R10: 00007ffe0b6a760c R11: 0000000000000246 R12: 0000000000000000
[ 1304.329057][ T8435] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f0fb9a99000
[ 1304.329473][ T8435]  </TASK>
[ 1304.352280][ T8435] veth0: entered allmulticast mode
[ 1304.353019][ T8435] veth1: entered allmulticast mode
[ 1304.353434][ T8435] veth2: entered allmulticast mode
[ 1304.353789][ T8435] veth3: entered allmulticast mode
[ 1323.690054][ T8435] veth0: left allmulticast mode
[ 1323.690499][ T8435] veth1: left allmulticast mode
[ 1323.690853][ T8435] veth2: left allmulticast mode
[ 1323.691178][ T8435] veth3: left allmulticast mode