[ 1286.959403][T16450] 
[ 1286.959965][T16450] =============================
[ 1286.960143][T16450] WARNING: suspicious RCU usage
[ 1286.960304][T16450] 6.12.0-rc7-virtme #1 Not tainted
[ 1286.960500][T16450] -----------------------------
[ 1286.960666][T16450] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1286.960906][T16450] 
[ 1286.960906][T16450] other info that might help us debug this:
[ 1286.960906][T16450] 
[ 1286.961217][T16450] 
[ 1286.961217][T16450] rcu_scheduler_active = 2, debug_locks = 1
[ 1286.961527][T16450] no locks held by smcrouted/16450.
[ 1286.961696][T16450] 
[ 1286.961696][T16450] stack backtrace:
[ 1286.961898][T16450] CPU: 1 UID: 0 PID: 16450 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1286.962177][T16450] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1286.962406][T16450] Call Trace:
[ 1286.962583][T16450]  <TASK>
[ 1286.962673][T16450]  dump_stack_lvl+0xb0/0xd0
[ 1286.962850][T16450]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1286.963029][T16450]  ip6mr_get_table+0x142/0x190
[ 1286.963201][T16450]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1286.963386][T16450]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1286.963658][T16450]  ? __lock_release+0x103/0x460
[ 1286.963863][T16450]  ? __might_fault+0x11b/0x170
[ 1286.964035][T16450]  ? trace_lock_acquire+0x14d/0x1f0
[ 1286.964203][T16450]  ? __might_fault+0xc3/0x170
[ 1286.964426][T16450]  ? lock_acquire+0x32/0xc0
[ 1286.964595][T16450]  ? __might_fault+0xc3/0x170
[ 1286.964802][T16450]  ? __might_fault+0x11b/0x170
[ 1286.965014][T16450]  do_ipv6_setsockopt+0x705/0x34e0
[ 1286.965219][T16450]  ? __lock_release+0x40/0x460
[ 1286.965440][T16450]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1286.965633][T16450]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1286.965819][T16450]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1286.966031][T16450]  ? validate_chain+0x1fe/0xae0
[ 1286.966200][T16450]  ? is_bpf_text_address+0x67/0x120
[ 1286.966388][T16450]  ? __pfx_validate_chain+0x10/0x10
[ 1286.966550][T16450]  ? hlock_class+0x4e/0x130
[ 1286.966712][T16450]  ? mark_lock+0x38/0x3e0
[ 1286.966893][T16450]  ? __lock_acquire+0xb3f/0x1580
[ 1286.967106][T16450]  ? find_held_lock+0x2c/0x110
[ 1286.967299][T16450]  ? ipv6_setsockopt+0x7f/0xe0
[ 1286.967506][T16450]  ipv6_setsockopt+0x7f/0xe0
[ 1286.967758][T16450]  rawv6_setsockopt+0xb7/0x550
[ 1286.968011][T16450]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1286.968275][T16450]  ? __lock_acquire+0xb3f/0x1580
[ 1286.968544][T16450]  ? kfree+0x2d/0x340
[ 1286.968757][T16450]  do_sock_setsockopt+0x149/0x3a0
[ 1286.968951][T16450]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1286.969166][T16450]  ? __lock_release+0x103/0x460
[ 1286.969336][T16450]  ? fd_install+0x1d1/0x5a0
[ 1286.969515][T16450]  ? trace_lock_acquire+0x14d/0x1f0
[ 1286.969679][T16450]  ? fdget+0x52/0x1e0
[ 1286.969815][T16450]  __sys_setsockopt+0x104/0x1a0
[ 1286.970033][T16450]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1286.970246][T16450]  ? __sys_socket+0x168/0x1e0
[ 1286.970431][T16450]  ? __pfx___sys_socket+0x10/0x10
[ 1286.970592][T16450]  ? do_user_addr_fault+0x374/0xe30
[ 1286.970812][T16450]  __x64_sys_setsockopt+0xbd/0x160
[ 1286.970977][T16450]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1286.971177][T16450]  do_syscall_64+0xc1/0x1d0
[ 1286.971392][T16450]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1286.971610][T16450] RIP: 0033:0x7f8eacf3891e
[ 1286.971846][T16450] 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
[ 1286.972417][T16450] RSP: 002b:00007fff47faa988 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1286.972678][T16450] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8eacf3891e
[ 1286.972916][T16450] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1286.973254][T16450] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1286.973583][T16450] R10: 00007fff47faa9ac R11: 0000000000000246 R12: 0000000000000000
[ 1286.973874][T16450] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f8ead03d000
[ 1286.974139][T16450]  </TASK>
[ 1286.977604][T16450] veth0: entered allmulticast mode
[ 1286.978493][T16450] veth1: entered allmulticast mode
[ 1286.979113][T16450] veth2: entered allmulticast mode
[ 1286.979517][T16450] veth3: entered allmulticast mode
[ 1305.834710][T16450] veth0: left allmulticast mode
[ 1305.835037][T16450] veth1: left allmulticast mode
[ 1305.835293][T16450] veth2: left allmulticast mode
[ 1305.835577][T16450] veth3: left allmulticast mode