[ 1874.650152][ T6369] 
[ 1874.650278][ T6369] =============================
[ 1874.650852][ T6369] WARNING: suspicious RCU usage
[ 1874.651019][ T6369] 6.12.0-rc6-virtme #1 Not tainted
[ 1874.651174][ T6369] -----------------------------
[ 1874.651338][ T6369] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1874.651565][ T6369] 
[ 1874.651565][ T6369] other info that might help us debug this:
[ 1874.651565][ T6369] 
[ 1874.651849][ T6369] 
[ 1874.651849][ T6369] rcu_scheduler_active = 2, debug_locks = 1
[ 1874.652065][ T6369] no locks held by smcrouted/6369.
[ 1874.652214][ T6369] 
[ 1874.652214][ T6369] stack backtrace:
[ 1874.652417][ T6369] CPU: 2 UID: 0 PID: 6369 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1874.652692][ T6369] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1874.653024][ T6369] Call Trace:
[ 1874.653149][ T6369]  <TASK>
[ 1874.653232][ T6369]  dump_stack_lvl+0xb0/0xd0
[ 1874.653408][ T6369]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1874.653562][ T6369]  ip6mr_get_table+0x142/0x190
[ 1874.653715][ T6369]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1874.653870][ T6369]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1874.654068][ T6369]  ? __lock_release+0x103/0x460
[ 1874.654220][ T6369]  ? __might_fault+0x11b/0x170
[ 1874.654402][ T6369]  ? trace_lock_acquire+0x14d/0x1f0
[ 1874.654679][ T6369]  ? __might_fault+0xc3/0x170
[ 1874.654930][ T6369]  ? lock_acquire+0x32/0xc0
[ 1874.655179][ T6369]  ? __might_fault+0xc3/0x170
[ 1874.655424][ T6369]  ? __might_fault+0x11b/0x170
[ 1874.655686][ T6369]  do_ipv6_setsockopt+0x705/0x34e0
[ 1874.655911][ T6369]  ? __lock_release+0xe0/0x460
[ 1874.656066][ T6369]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1874.656212][ T6369]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1874.656381][ T6369]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1874.656532][ T6369]  ? validate_chain+0x1fe/0xae0
[ 1874.656688][ T6369]  ? is_bpf_text_address+0x67/0x120
[ 1874.656849][ T6369]  ? __pfx_validate_chain+0x10/0x10
[ 1874.656995][ T6369]  ? hlock_class+0x4e/0x130
[ 1874.657145][ T6369]  ? mark_lock+0x38/0x3e0
[ 1874.657271][ T6369]  ? __lock_acquire+0xb3f/0x1580
[ 1874.657439][ T6369]  ? find_held_lock+0x2c/0x110
[ 1874.657597][ T6369]  ? ipv6_setsockopt+0x7f/0xe0
[ 1874.657745][ T6369]  ipv6_setsockopt+0x7f/0xe0
[ 1874.657899][ T6369]  rawv6_setsockopt+0xb7/0x550
[ 1874.658056][ T6369]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1874.658203][ T6369]  ? __lock_acquire+0xb3f/0x1580
[ 1874.658367][ T6369]  ? kfree+0x2d/0x340
[ 1874.658489][ T6369]  do_sock_setsockopt+0x149/0x3a0
[ 1874.658642][ T6369]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1874.658790][ T6369]  ? __lock_release+0x103/0x460
[ 1874.658938][ T6369]  ? fd_install+0x1d1/0x5a0
[ 1874.659095][ T6369]  ? trace_lock_acquire+0x14d/0x1f0
[ 1874.659249][ T6369]  ? fdget+0x52/0x1e0
[ 1874.659391][ T6369]  __sys_setsockopt+0x104/0x1a0
[ 1874.659543][ T6369]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1874.659691][ T6369]  ? __sys_socket+0x168/0x1e0
[ 1874.659840][ T6369]  ? __pfx___sys_socket+0x10/0x10
[ 1874.659996][ T6369]  __x64_sys_setsockopt+0xbd/0x160
[ 1874.660144][ T6369]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1874.660327][ T6369]  do_syscall_64+0xc1/0x1d0
[ 1874.660494][ T6369]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1874.660685][ T6369] RIP: 0033:0x7f891aeb091e
[ 1874.660841][ T6369] 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
[ 1874.661434][ T6369] RSP: 002b:00007fff5c0ee568 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1874.661660][ T6369] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f891aeb091e
[ 1874.661892][ T6369] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1874.662118][ T6369] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1874.662344][ T6369] R10: 00007fff5c0ee58c R11: 0000000000000246 R12: 0000000000000000
[ 1874.662744][ T6369] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f891afb5000
[ 1874.662983][ T6369]  </TASK>
[ 1874.668663][ T6369] veth0: entered allmulticast mode
[ 1874.669194][ T6369] veth1: entered allmulticast mode
[ 1874.669540][ T6369] veth2: entered allmulticast mode
[ 1874.669867][ T6369] veth3: entered allmulticast mode
[ 1904.602894][ T6369] veth0: left allmulticast mode
[ 1904.603595][ T6369] veth1: left allmulticast mode
[ 1904.603985][ T6369] veth2: left allmulticast mode
[ 1904.604397][ T6369] veth3: left allmulticast mode