[ 1290.698874][ T9406] 
[ 1290.699074][ T9406] =============================
[ 1290.699333][ T9406] WARNING: suspicious RCU usage
[ 1290.699588][ T9406] 6.12.0-rc7-virtme #1 Not tainted
[ 1290.701357][ T9406] -----------------------------
[ 1290.701621][ T9406] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1290.702097][ T9406] 
[ 1290.702097][ T9406] other info that might help us debug this:
[ 1290.702097][ T9406] 
[ 1290.702598][ T9406] 
[ 1290.702598][ T9406] rcu_scheduler_active = 2, debug_locks = 1
[ 1290.702961][ T9406] no locks held by smcrouted/9406.
[ 1290.703201][ T9406] 
[ 1290.703201][ T9406] stack backtrace:
[ 1290.703503][ T9406] CPU: 0 UID: 0 PID: 9406 Comm: smcrouted Not tainted 6.12.0-rc7-virtme #1
[ 1290.703928][ T9406] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1290.704266][ T9406] Call Trace:
[ 1290.704458][ T9406]  <TASK>
[ 1290.704598][ T9406]  dump_stack_lvl+0xb0/0xd0
[ 1290.704897][ T9406]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1290.705177][ T9406]  ip6mr_get_table+0x142/0x190
[ 1290.705445][ T9406]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1290.705696][ T9406]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1290.706025][ T9406]  ? __lock_release+0x103/0x460
[ 1290.706263][ T9406]  ? __might_fault+0x11b/0x170
[ 1290.706514][ T9406]  ? trace_lock_acquire+0x14d/0x1f0
[ 1290.706776][ T9406]  ? __might_fault+0xc3/0x170
[ 1290.707007][ T9406]  ? lock_acquire+0x32/0xc0
[ 1290.707260][ T9406]  ? __might_fault+0xc3/0x170
[ 1290.707516][ T9406]  ? __might_fault+0x11b/0x170
[ 1290.707768][ T9406]  do_ipv6_setsockopt+0x705/0x34e0
[ 1290.708030][ T9406]  ? __lock_release+0x40/0x460
[ 1290.708296][ T9406]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1290.708555][ T9406]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1290.708822][ T9406]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1290.709072][ T9406]  ? validate_chain+0x1fe/0xae0
[ 1290.709325][ T9406]  ? is_bpf_text_address+0x67/0x120
[ 1290.709573][ T9406]  ? __pfx_validate_chain+0x10/0x10
[ 1290.709807][ T9406]  ? hlock_class+0x4e/0x130
[ 1290.710055][ T9406]  ? mark_lock+0x38/0x3e0
[ 1290.710279][ T9406]  ? __lock_acquire+0xb3f/0x1580
[ 1290.710558][ T9406]  ? find_held_lock+0x2c/0x110
[ 1290.710814][ T9406]  ? ipv6_setsockopt+0x7f/0xe0
[ 1290.711092][ T9406]  ipv6_setsockopt+0x7f/0xe0
[ 1290.711374][ T9406]  rawv6_setsockopt+0xb7/0x550
[ 1290.711664][ T9406]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1290.711895][ T9406]  ? __lock_acquire+0xb3f/0x1580
[ 1290.712168][ T9406]  ? kfree+0x2d/0x340
[ 1290.712391][ T9406]  do_sock_setsockopt+0x149/0x3a0
[ 1290.712655][ T9406]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1290.712923][ T9406]  ? __lock_release+0x103/0x460
[ 1290.713183][ T9406]  ? fd_install+0x1d1/0x5a0
[ 1290.713475][ T9406]  ? trace_lock_acquire+0x14d/0x1f0
[ 1290.713746][ T9406]  ? fdget+0x52/0x1e0
[ 1290.713979][ T9406]  __sys_setsockopt+0x104/0x1a0
[ 1290.714264][ T9406]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1290.714531][ T9406]  ? __sys_socket+0x168/0x1e0
[ 1290.714791][ T9406]  ? __pfx___sys_socket+0x10/0x10
[ 1290.715059][ T9406]  ? do_user_addr_fault+0x374/0xe30
[ 1290.715352][ T9406]  __x64_sys_setsockopt+0xbd/0x160
[ 1290.715596][ T9406]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1290.715930][ T9406]  do_syscall_64+0xc1/0x1d0
[ 1290.716233][ T9406]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1290.716584][ T9406] RIP: 0033:0x7f0f34dd691e
[ 1290.716867][ T9406] 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
[ 1290.717800][ T9406] RSP: 002b:00007ffe6d65a7d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1290.718218][ T9406] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0f34dd691e
[ 1290.718621][ T9406] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1290.719028][ T9406] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1290.719427][ T9406] R10: 00007ffe6d65a7fc R11: 0000000000000246 R12: 0000000000000000
[ 1290.719827][ T9406] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f0f34edb000
[ 1290.720283][ T9406]  </TASK>
[ 1290.723352][ T9406] veth0: entered allmulticast mode
[ 1290.724059][ T9406] veth1: entered allmulticast mode
[ 1290.724475][ T9406] veth2: entered allmulticast mode
[ 1290.724935][ T9406] veth3: entered allmulticast mode
[ 1309.294670][ T9406] veth0: left allmulticast mode
[ 1309.295016][ T9406] veth1: left allmulticast mode
[ 1309.295256][ T9406] veth2: left allmulticast mode
[ 1309.295487][ T9406] veth3: left allmulticast mode