[ 1340.477858][ T8882] 
[ 1340.477995][ T8882] =============================
[ 1340.478176][ T8882] WARNING: suspicious RCU usage
[ 1340.478338][ T8882] 6.12.0-rc6-virtme #1 Not tainted
[ 1340.478500][ T8882] -----------------------------
[ 1340.478670][ T8882] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1340.478910][ T8882] 
[ 1340.478910][ T8882] other info that might help us debug this:
[ 1340.478910][ T8882] 
[ 1340.479374][ T8882] 
[ 1340.479374][ T8882] rcu_scheduler_active = 2, debug_locks = 1
[ 1340.479611][ T8882] no locks held by smcrouted/8882.
[ 1340.479769][ T8882] 
[ 1340.479769][ T8882] stack backtrace:
[ 1340.479960][ T8882] CPU: 3 UID: 0 PID: 8882 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1340.480242][ T8882] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1340.480464][ T8882] Call Trace:
[ 1340.480594][ T8882]  <TASK>
[ 1340.480689][ T8882]  dump_stack_lvl+0xb0/0xd0
[ 1340.480863][ T8882]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1340.481027][ T8882]  ip6mr_get_table+0x142/0x190
[ 1340.481190][ T8882]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1340.481355][ T8882]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1340.481574][ T8882]  ? __lock_release+0x103/0x460
[ 1340.481765][ T8882]  ? __might_fault+0x11b/0x170
[ 1340.481931][ T8882]  ? trace_lock_acquire+0x14d/0x1f0
[ 1340.482105][ T8882]  ? __might_fault+0xc3/0x170
[ 1340.482292][ T8882]  ? lock_acquire+0x32/0xc0
[ 1340.482458][ T8882]  ? __might_fault+0xc3/0x170
[ 1340.482630][ T8882]  ? __might_fault+0x11b/0x170
[ 1340.482815][ T8882]  do_ipv6_setsockopt+0x705/0x34e0
[ 1340.482994][ T8882]  ? __lock_release+0xe0/0x460
[ 1340.483165][ T8882]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1340.483319][ T8882]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1340.483493][ T8882]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1340.483660][ T8882]  ? validate_chain+0x1fe/0xae0
[ 1340.483844][ T8882]  ? is_bpf_text_address+0x67/0x120
[ 1340.484019][ T8882]  ? __pfx_validate_chain+0x10/0x10
[ 1340.484185][ T8882]  ? hlock_class+0x4e/0x130
[ 1340.484365][ T8882]  ? mark_lock+0x38/0x3e0
[ 1340.484502][ T8882]  ? __lock_acquire+0xb3f/0x1580
[ 1340.484684][ T8882]  ? find_held_lock+0x2c/0x110
[ 1340.484860][ T8882]  ? ipv6_setsockopt+0x7f/0xe0
[ 1340.485029][ T8882]  ipv6_setsockopt+0x7f/0xe0
[ 1340.485189][ T8882]  rawv6_setsockopt+0xb7/0x550
[ 1340.485374][ T8882]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1340.485537][ T8882]  ? __lock_acquire+0xb3f/0x1580
[ 1340.485710][ T8882]  ? kfree+0x2d/0x340
[ 1340.485863][ T8882]  do_sock_setsockopt+0x149/0x3a0
[ 1340.486037][ T8882]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1340.486211][ T8882]  ? __lock_release+0x103/0x460
[ 1340.486387][ T8882]  ? fd_install+0x1d1/0x5a0
[ 1340.486564][ T8882]  ? trace_lock_acquire+0x14d/0x1f0
[ 1340.486740][ T8882]  ? fdget+0x52/0x1e0
[ 1340.486882][ T8882]  __sys_setsockopt+0x104/0x1a0
[ 1340.487052][ T8882]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1340.487215][ T8882]  ? __sys_socket+0x168/0x1e0
[ 1340.487372][ T8882]  ? __pfx___sys_socket+0x10/0x10
[ 1340.487538][ T8882]  ? do_user_addr_fault+0x374/0xe30
[ 1340.487705][ T8882]  __x64_sys_setsockopt+0xbd/0x160
[ 1340.487876][ T8882]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1340.488086][ T8882]  do_syscall_64+0xc1/0x1d0
[ 1340.488257][ T8882]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1340.488469][ T8882] RIP: 0033:0x7f5ed47bd91e
[ 1340.488654][ T8882] 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
[ 1340.489274][ T8882] RSP: 002b:00007ffce145e548 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1340.489539][ T8882] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5ed47bd91e
[ 1340.489807][ T8882] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1340.490086][ T8882] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1340.490349][ T8882] R10: 00007ffce145e56c R11: 0000000000000246 R12: 0000000000000000
[ 1340.490618][ T8882] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f5ed48c2000
[ 1340.490905][ T8882]  </TASK>
[ 1340.494865][ T8882] veth0: entered allmulticast mode
[ 1340.495447][ T8882] veth1: entered allmulticast mode
[ 1340.495820][ T8882] veth2: entered allmulticast mode
[ 1340.496185][ T8882] veth3: entered allmulticast mode
[ 1340.496519][ T8882] veth4: entered allmulticast mode
[ 1340.496856][ T8882] veth5: entered allmulticast mode
[ 1366.148238][ T8882] veth0: left allmulticast mode
[ 1366.148584][ T8882] veth1: left allmulticast mode
[ 1366.148849][ T8882] veth2: left allmulticast mode
[ 1366.149115][ T8882] veth3: left allmulticast mode
[ 1366.149413][ T8882] veth4: left allmulticast mode
[ 1366.149680][ T8882] veth5: left allmulticast mode