[ 1891.696399][ T8321] 
[ 1891.696715][ T8321] =============================
[ 1891.696913][ T8321] WARNING: suspicious RCU usage
[ 1891.697076][ T8321] 6.12.0-rc6-virtme #1 Not tainted
[ 1891.697234][ T8321] -----------------------------
[ 1891.697400][ T8321] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1891.697645][ T8321] 
[ 1891.697645][ T8321] other info that might help us debug this:
[ 1891.697645][ T8321] 
[ 1891.697960][ T8321] 
[ 1891.697960][ T8321] rcu_scheduler_active = 2, debug_locks = 1
[ 1891.698188][ T8321] no locks held by smcrouted/8321.
[ 1891.698365][ T8321] 
[ 1891.698365][ T8321] stack backtrace:
[ 1891.698578][ T8321] CPU: 2 UID: 0 PID: 8321 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1891.698897][ T8321] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1891.699275][ T8321] Call Trace:
[ 1891.699404][ T8321]  <TASK>
[ 1891.699499][ T8321]  dump_stack_lvl+0xb0/0xd0
[ 1891.699694][ T8321]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1891.699868][ T8321]  ip6mr_get_table+0x142/0x190
[ 1891.700065][ T8321]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1891.700223][ T8321]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1891.700466][ T8321]  ? __lock_release+0x103/0x460
[ 1891.700625][ T8321]  ? __might_fault+0x11b/0x170
[ 1891.700820][ T8321]  ? trace_lock_acquire+0x14d/0x1f0
[ 1891.701291][ T8321]  ? __might_fault+0xc3/0x170
[ 1891.701479][ T8321]  ? lock_acquire+0x32/0xc0
[ 1891.701663][ T8321]  ? __might_fault+0xc3/0x170
[ 1891.701823][ T8321]  ? __might_fault+0x11b/0x170
[ 1891.702019][ T8321]  do_ipv6_setsockopt+0x705/0x34e0
[ 1891.702181][ T8321]  ? __lock_release+0xe0/0x460
[ 1891.702366][ T8321]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1891.702540][ T8321]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1891.702768][ T8321]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1891.702987][ T8321]  ? validate_chain+0x1fe/0xae0
[ 1891.703162][ T8321]  ? is_bpf_text_address+0x67/0x120
[ 1891.703349][ T8321]  ? __pfx_validate_chain+0x10/0x10
[ 1891.703538][ T8321]  ? hlock_class+0x4e/0x130
[ 1891.703701][ T8321]  ? mark_lock+0x38/0x3e0
[ 1891.703834][ T8321]  ? __lock_acquire+0xb3f/0x1580
[ 1891.704010][ T8321]  ? find_held_lock+0x2c/0x110
[ 1891.704183][ T8321]  ? ipv6_setsockopt+0x7f/0xe0
[ 1891.704344][ T8321]  ipv6_setsockopt+0x7f/0xe0
[ 1891.704514][ T8321]  rawv6_setsockopt+0xb7/0x550
[ 1891.704686][ T8321]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1891.704860][ T8321]  ? __lock_acquire+0xb3f/0x1580
[ 1891.705037][ T8321]  ? kfree+0x2d/0x340
[ 1891.705170][ T8321]  do_sock_setsockopt+0x149/0x3a0
[ 1891.705339][ T8321]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1891.705518][ T8321]  ? __lock_release+0x103/0x460
[ 1891.705684][ T8321]  ? fd_install+0x1d1/0x5a0
[ 1891.705853][ T8321]  ? trace_lock_acquire+0x14d/0x1f0
[ 1891.706025][ T8321]  ? fdget+0x52/0x1e0
[ 1891.706173][ T8321]  __sys_setsockopt+0x104/0x1a0
[ 1891.706342][ T8321]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1891.706508][ T8321]  ? __sys_socket+0x168/0x1e0
[ 1891.706676][ T8321]  ? __pfx___sys_socket+0x10/0x10
[ 1891.706864][ T8321]  __x64_sys_setsockopt+0xbd/0x160
[ 1891.707046][ T8321]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1891.707252][ T8321]  do_syscall_64+0xc1/0x1d0
[ 1891.707423][ T8321]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1891.707632][ T8321] RIP: 0033:0x7f6af93bd91e
[ 1891.707834][ T8321] 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
[ 1891.708411][ T8321] RSP: 002b:00007fff28e566c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1891.708668][ T8321] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6af93bd91e
[ 1891.708948][ T8321] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1891.709195][ T8321] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1891.709464][ T8321] R10: 00007fff28e566ec R11: 0000000000000246 R12: 0000000000000000
[ 1891.709726][ T8321] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f6af94c2000
[ 1891.710011][ T8321]  </TASK>
[ 1891.724985][ T8321] veth0: entered allmulticast mode
[ 1891.725544][ T8321] veth1: entered allmulticast mode
[ 1891.725885][ T8321] veth2: entered allmulticast mode
[ 1891.726216][ T8321] veth3: entered allmulticast mode
[ 1921.121188][ T8321] veth0: left allmulticast mode
[ 1921.121494][ T8321] veth1: left allmulticast mode
[ 1921.121730][ T8321] veth2: left allmulticast mode
[ 1921.121967][ T8321] veth3: left allmulticast mode