[ 1289.979699][ T8972] 
[ 1289.979852][ T8972] =============================
[ 1289.980016][ T8972] WARNING: suspicious RCU usage
[ 1289.980179][ T8972] 6.12.0-rc7-virtme #1 Not tainted
[ 1289.980340][ T8972] -----------------------------
[ 1289.980509][ T8972] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1289.980770][ T8972] 
[ 1289.980770][ T8972] other info that might help us debug this:
[ 1289.980770][ T8972] 
[ 1289.981081][ T8972] 
[ 1289.981081][ T8972] rcu_scheduler_active = 2, debug_locks = 1
[ 1289.981312][ T8972] no locks held by smcrouted/8972.
[ 1289.981489][ T8972] 
[ 1289.981489][ T8972] stack backtrace:
[ 1289.981710][ T8972] CPU: 0 UID: 0 PID: 8972 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1289.982006][ T8972] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1289.982238][ T8972] Call Trace:
[ 1289.982364][ T8972]  <TASK>
[ 1289.982451][ T8972]  dump_stack_lvl+0xb0/0xd0
[ 1289.982627][ T8972]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1289.982822][ T8972]  ip6mr_get_table+0x142/0x190
[ 1289.982986][ T8972]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1289.983159][ T8972]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1289.983373][ T8972]  ? __lock_release+0x103/0x460
[ 1289.983533][ T8972]  ? __might_fault+0x11b/0x170
[ 1289.983693][ T8972]  ? trace_lock_acquire+0x14d/0x1f0
[ 1289.983859][ T8972]  ? __might_fault+0xc3/0x170
[ 1289.984019][ T8972]  ? lock_acquire+0x32/0xc0
[ 1289.984182][ T8972]  ? __might_fault+0xc3/0x170
[ 1289.984374][ T8972]  ? __might_fault+0x11b/0x170
[ 1289.984537][ T8972]  do_ipv6_setsockopt+0x705/0x34e0
[ 1289.984702][ T8972]  ? __lock_release+0x10/0x460
[ 1289.984861][ T8972]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1289.985016][ T8972]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1289.985176][ T8972]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1289.985339][ T8972]  ? validate_chain+0x1fe/0xae0
[ 1289.985507][ T8972]  ? is_bpf_text_address+0x67/0x120
[ 1289.985673][ T8972]  ? __pfx_validate_chain+0x10/0x10
[ 1289.985831][ T8972]  ? hlock_class+0x4e/0x130
[ 1289.985989][ T8972]  ? mark_lock+0x38/0x3e0
[ 1289.986115][ T8972]  ? __lock_acquire+0xb3f/0x1580
[ 1289.986285][ T8972]  ? find_held_lock+0x2c/0x110
[ 1289.986450][ T8972]  ? ipv6_setsockopt+0x7f/0xe0
[ 1289.986612][ T8972]  ipv6_setsockopt+0x7f/0xe0
[ 1289.986774][ T8972]  rawv6_setsockopt+0xb7/0x550
[ 1289.986941][ T8972]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1289.987095][ T8972]  ? __lock_acquire+0xb3f/0x1580
[ 1289.987264][ T8972]  ? kfree+0x2d/0x340
[ 1289.987391][ T8972]  do_sock_setsockopt+0x149/0x3a0
[ 1289.987552][ T8972]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1289.987707][ T8972]  ? __lock_release+0x103/0x460
[ 1289.987864][ T8972]  ? fd_install+0x1d1/0x5a0
[ 1289.988031][ T8972]  ? trace_lock_acquire+0x14d/0x1f0
[ 1289.988203][ T8972]  ? fdget+0x52/0x1e0
[ 1289.988359][ T8972]  __sys_setsockopt+0x104/0x1a0
[ 1289.988526][ T8972]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1289.988682][ T8972]  ? __sys_socket+0x168/0x1e0
[ 1289.988842][ T8972]  ? __pfx___sys_socket+0x10/0x10
[ 1289.989000][ T8972]  ? do_user_addr_fault+0x374/0xe30
[ 1289.989165][ T8972]  __x64_sys_setsockopt+0xbd/0x160
[ 1289.989330][ T8972]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1289.989536][ T8972]  do_syscall_64+0xc1/0x1d0
[ 1289.989699][ T8972]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1289.989898][ T8972] RIP: 0033:0x7f758d9f491e
[ 1289.990071][ T8972] 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
[ 1289.990627][ T8972] RSP: 002b:00007ffd142b6128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1289.990894][ T8972] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f758d9f491e
[ 1289.991154][ T8972] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1289.991391][ T8972] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1289.991629][ T8972] R10: 00007ffd142b614c R11: 0000000000000246 R12: 0000000000000000
[ 1289.991870][ T8972] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f758daf9000
[ 1289.992125][ T8972]  </TASK>
[ 1289.996837][ T8972] veth0: entered allmulticast mode
[ 1289.998804][ T8972] veth1: entered allmulticast mode
[ 1289.999170][ T8972] veth2: entered allmulticast mode
[ 1289.999502][ T8972] veth3: entered allmulticast mode
[ 1309.058931][ T8972] veth0: left allmulticast mode
[ 1309.059291][ T8972] veth1: left allmulticast mode
[ 1309.059571][ T8972] veth2: left allmulticast mode
[ 1309.059829][ T8972] veth3: left allmulticast mode