[ 1311.978987][T16753] 
[ 1311.979212][T16753] =============================
[ 1311.981088][T16753] WARNING: suspicious RCU usage
[ 1311.981381][T16753] 6.12.0-rc6-virtme #1 Not tainted
[ 1311.981695][T16753] -----------------------------
[ 1311.981978][T16753] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1311.982382][T16753] 
[ 1311.982382][T16753] other info that might help us debug this:
[ 1311.982382][T16753] 
[ 1311.982918][T16753] 
[ 1311.982918][T16753] rcu_scheduler_active = 2, debug_locks = 1
[ 1311.983300][T16753] no locks held by smcrouted/16753.
[ 1311.983586][T16753] 
[ 1311.983586][T16753] stack backtrace:
[ 1311.983936][T16753] CPU: 3 UID: 0 PID: 16753 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1311.984407][T16753] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1311.984755][T16753] Call Trace:
[ 1311.984974][T16753]  <TASK>
[ 1311.985130][T16753]  dump_stack_lvl+0xb0/0xd0
[ 1311.985421][T16753]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1311.985708][T16753]  ip6mr_get_table+0x142/0x190
[ 1311.985997][T16753]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1311.986285][T16753]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1311.986625][T16753]  ? __lock_release+0x103/0x460
[ 1311.986896][T16753]  ? __might_fault+0x11b/0x170
[ 1311.987165][T16753]  ? trace_lock_acquire+0x14d/0x1f0
[ 1311.987436][T16753]  ? __might_fault+0xc3/0x170
[ 1311.987710][T16753]  ? lock_acquire+0x32/0xc0
[ 1311.987972][T16753]  ? __might_fault+0xc3/0x170
[ 1311.988230][T16753]  ? __might_fault+0x11b/0x170
[ 1311.988501][T16753]  do_ipv6_setsockopt+0x705/0x34e0
[ 1311.988767][T16753]  ? __lock_release+0xe0/0x460
[ 1311.989037][T16753]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1311.989309][T16753]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1311.989585][T16753]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1311.989853][T16753]  ? validate_chain+0x1fe/0xae0
[ 1311.990127][T16753]  ? is_bpf_text_address+0x67/0x120
[ 1311.990403][T16753]  ? __pfx_validate_chain+0x10/0x10
[ 1311.990668][T16753]  ? hlock_class+0x4e/0x130
[ 1311.990929][T16753]  ? mark_lock+0x38/0x3e0
[ 1311.991134][T16753]  ? __lock_acquire+0xb3f/0x1580
[ 1311.991408][T16753]  ? find_held_lock+0x2c/0x110
[ 1311.991679][T16753]  ? ipv6_setsockopt+0x7f/0xe0
[ 1311.991942][T16753]  ipv6_setsockopt+0x7f/0xe0
[ 1311.992205][T16753]  rawv6_setsockopt+0xb7/0x550
[ 1311.992477][T16753]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1311.992738][T16753]  ? __lock_acquire+0xb3f/0x1580
[ 1311.993016][T16753]  ? kfree+0x2d/0x340
[ 1311.993236][T16753]  do_sock_setsockopt+0x149/0x3a0
[ 1311.993504][T16753]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1311.994200][T16753]  ? __lock_release+0x103/0x460
[ 1311.994459][T16753]  ? fd_install+0x1d1/0x5a0
[ 1311.994731][T16753]  ? trace_lock_acquire+0x14d/0x1f0
[ 1311.994991][T16753]  ? fdget+0x52/0x1e0
[ 1311.995199][T16753]  __sys_setsockopt+0x104/0x1a0
[ 1311.995467][T16753]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1311.995728][T16753]  ? __sys_socket+0x168/0x1e0
[ 1311.995985][T16753]  ? __pfx___sys_socket+0x10/0x10
[ 1311.996282][T16753]  ? do_user_addr_fault+0x374/0xe30
[ 1311.996466][T16753]  __x64_sys_setsockopt+0xbd/0x160
[ 1311.996635][T16753]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1311.996835][T16753]  do_syscall_64+0xc1/0x1d0
[ 1311.997003][T16753]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1311.997198][T16753] RIP: 0033:0x7f0022f8391e
[ 1311.997371][T16753] 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
[ 1311.997962][T16753] RSP: 002b:00007ffe860452b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1311.998209][T16753] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0022f8391e
[ 1311.998450][T16753] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1311.998700][T16753] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1311.998949][T16753] R10: 00007ffe860452dc R11: 0000000000000246 R12: 0000000000000000
[ 1311.999197][T16753] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f0023088000
[ 1311.999454][T16753]  </TASK>
[ 1312.003014][T16753] veth0: entered allmulticast mode
[ 1312.003600][T16753] veth1: entered allmulticast mode
[ 1312.003936][T16753] veth2: entered allmulticast mode
[ 1312.004259][T16753] veth3: entered allmulticast mode
[ 1330.711537][T16753] veth0: left allmulticast mode
[ 1330.711947][T16753] veth1: left allmulticast mode
[ 1330.712185][T16753] veth2: left allmulticast mode
[ 1330.712422][T16753] veth3: left allmulticast mode