[ 1289.247893][T15551] 
[ 1289.248074][T15551] =============================
[ 1289.248254][T15551] WARNING: suspicious RCU usage
[ 1289.248454][T15551] 6.12.0-rc6-virtme #1 Not tainted
[ 1289.248673][T15551] -----------------------------
[ 1289.248845][T15551] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1289.249112][T15551] 
[ 1289.249112][T15551] other info that might help us debug this:
[ 1289.249112][T15551] 
[ 1289.249455][T15551] 
[ 1289.249455][T15551] rcu_scheduler_active = 2, debug_locks = 1
[ 1289.249712][T15551] no locks held by smcrouted/15551.
[ 1289.249903][T15551] 
[ 1289.249903][T15551] stack backtrace:
[ 1289.250125][T15551] CPU: 2 UID: 0 PID: 15551 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1289.250416][T15551] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1289.250616][T15551] Call Trace:
[ 1289.250740][T15551]  <TASK>
[ 1289.250829][T15551]  dump_stack_lvl+0xb0/0xd0
[ 1289.251006][T15551]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1289.251180][T15551]  ip6mr_get_table+0x142/0x190
[ 1289.251361][T15551]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1289.251537][T15551]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1289.251751][T15551]  ? __lock_release+0x103/0x460
[ 1289.251908][T15551]  ? __might_fault+0x11b/0x170
[ 1289.252068][T15551]  ? trace_lock_acquire+0x14d/0x1f0
[ 1289.252280][T15551]  ? __might_fault+0xc3/0x170
[ 1289.252442][T15551]  ? lock_acquire+0x32/0xc0
[ 1289.252619][T15551]  ? __might_fault+0xc3/0x170
[ 1289.252786][T15551]  ? __might_fault+0x11b/0x170
[ 1289.252951][T15551]  do_ipv6_setsockopt+0x705/0x34e0
[ 1289.253113][T15551]  ? __lock_release+0xe0/0x460
[ 1289.253281][T15551]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1289.253463][T15551]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1289.253634][T15551]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1289.253809][T15551]  ? validate_chain+0x1fe/0xae0
[ 1289.253991][T15551]  ? is_bpf_text_address+0x67/0x120
[ 1289.254169][T15551]  ? __pfx_validate_chain+0x10/0x10
[ 1289.254353][T15551]  ? hlock_class+0x4e/0x130
[ 1289.254517][T15551]  ? mark_lock+0x38/0x3e0
[ 1289.254659][T15551]  ? __lock_acquire+0xb3f/0x1580
[ 1289.254850][T15551]  ? find_held_lock+0x2c/0x110
[ 1289.255074][T15551]  ? ipv6_setsockopt+0x7f/0xe0
[ 1289.255253][T15551]  ipv6_setsockopt+0x7f/0xe0
[ 1289.255426][T15551]  rawv6_setsockopt+0xb7/0x550
[ 1289.255642][T15551]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1289.255807][T15551]  ? __lock_acquire+0xb3f/0x1580
[ 1289.255969][T15551]  ? kfree+0x2d/0x340
[ 1289.256097][T15551]  do_sock_setsockopt+0x149/0x3a0
[ 1289.256257][T15551]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1289.256411][T15551]  ? __lock_release+0x103/0x460
[ 1289.256569][T15551]  ? fd_install+0x1d1/0x5a0
[ 1289.256748][T15551]  ? trace_lock_acquire+0x14d/0x1f0
[ 1289.256910][T15551]  ? fdget+0x52/0x1e0
[ 1289.257052][T15551]  __sys_setsockopt+0x104/0x1a0
[ 1289.257216][T15551]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1289.257387][T15551]  ? __sys_socket+0x168/0x1e0
[ 1289.257559][T15551]  ? __pfx___sys_socket+0x10/0x10
[ 1289.257728][T15551]  ? do_user_addr_fault+0x374/0xe30
[ 1289.257904][T15551]  __x64_sys_setsockopt+0xbd/0x160
[ 1289.258069][T15551]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1289.258279][T15551]  do_syscall_64+0xc1/0x1d0
[ 1289.258492][T15551]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1289.258714][T15551] RIP: 0033:0x7f20f365291e
[ 1289.259000][T15551] 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
[ 1289.259903][T15551] RSP: 002b:00007ffef22978f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1289.260294][T15551] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f20f365291e
[ 1289.260678][T15551] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1289.261057][T15551] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1289.261443][T15551] R10: 00007ffef229791c R11: 0000000000000246 R12: 0000000000000000
[ 1289.261831][T15551] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f20f3757000
[ 1289.262259][T15551]  </TASK>
[ 1289.266497][T15551] veth0: entered allmulticast mode
[ 1289.267409][T15551] veth1: entered allmulticast mode
[ 1289.268029][T15551] veth2: entered allmulticast mode
[ 1289.268595][T15551] veth3: entered allmulticast mode
[ 1308.482634][T15551] veth0: left allmulticast mode
[ 1308.483001][T15551] veth1: left allmulticast mode
[ 1308.483242][T15551] veth2: left allmulticast mode
[ 1308.483507][T15551] veth3: left allmulticast mode