[ 1267.209074][ T4454] 
[ 1267.209217][ T4454] =============================
[ 1267.209405][ T4454] WARNING: suspicious RCU usage
[ 1267.209566][ T4454] 6.12.0-rc6-virtme #1 Not tainted
[ 1267.209727][ T4454] -----------------------------
[ 1267.209886][ T4454] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1267.210121][ T4454] 
[ 1267.210121][ T4454] other info that might help us debug this:
[ 1267.210121][ T4454] 
[ 1267.210436][ T4454] 
[ 1267.210436][ T4454] rcu_scheduler_active = 2, debug_locks = 1
[ 1267.210679][ T4454] no locks held by smcrouted/4454.
[ 1267.210908][ T4454] 
[ 1267.210908][ T4454] stack backtrace:
[ 1267.211111][ T4454] CPU: 3 UID: 0 PID: 4454 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1267.211399][ T4454] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1267.211611][ T4454] Call Trace:
[ 1267.211735][ T4454]  <TASK>
[ 1267.211822][ T4454]  dump_stack_lvl+0xb0/0xd0
[ 1267.211994][ T4454]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1267.212163][ T4454]  ip6mr_get_table+0x142/0x190
[ 1267.212330][ T4454]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1267.212497][ T4454]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1267.212703][ T4454]  ? __lock_release+0x103/0x460
[ 1267.212865][ T4454]  ? __might_fault+0x11b/0x170
[ 1267.213032][ T4454]  ? trace_lock_acquire+0x14d/0x1f0
[ 1267.213205][ T4454]  ? __might_fault+0xc3/0x170
[ 1267.213364][ T4454]  ? lock_acquire+0x32/0xc0
[ 1267.213525][ T4454]  ? __might_fault+0xc3/0x170
[ 1267.213681][ T4454]  ? __might_fault+0x11b/0x170
[ 1267.213843][ T4454]  do_ipv6_setsockopt+0x705/0x34e0
[ 1267.214004][ T4454]  ? __lock_release+0xe0/0x460
[ 1267.214168][ T4454]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1267.214332][ T4454]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1267.214493][ T4454]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1267.214655][ T4454]  ? validate_chain+0x1fe/0xae0
[ 1267.214815][ T4454]  ? is_bpf_text_address+0x67/0x120
[ 1267.214981][ T4454]  ? __pfx_validate_chain+0x10/0x10
[ 1267.215136][ T4454]  ? hlock_class+0x4e/0x130
[ 1267.215299][ T4454]  ? mark_lock+0x38/0x3e0
[ 1267.215435][ T4454]  ? __lock_acquire+0xb3f/0x1580
[ 1267.215606][ T4454]  ? find_held_lock+0x2c/0x110
[ 1267.215772][ T4454]  ? ipv6_setsockopt+0x7f/0xe0
[ 1267.215929][ T4454]  ipv6_setsockopt+0x7f/0xe0
[ 1267.216091][ T4454]  rawv6_setsockopt+0xb7/0x550
[ 1267.216259][ T4454]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1267.216423][ T4454]  ? __lock_acquire+0xb3f/0x1580
[ 1267.216587][ T4454]  ? kfree+0x2d/0x340
[ 1267.216726][ T4454]  do_sock_setsockopt+0x149/0x3a0
[ 1267.216895][ T4454]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1267.217053][ T4454]  ? __lock_release+0x103/0x460
[ 1267.217217][ T4454]  ? fd_install+0x1d1/0x5a0
[ 1267.217381][ T4454]  ? trace_lock_acquire+0x14d/0x1f0
[ 1267.217543][ T4454]  ? fdget+0x52/0x1e0
[ 1267.217666][ T4454]  __sys_setsockopt+0x104/0x1a0
[ 1267.217828][ T4454]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1267.217984][ T4454]  ? __sys_socket+0x168/0x1e0
[ 1267.218143][ T4454]  ? __pfx___sys_socket+0x10/0x10
[ 1267.218303][ T4454]  ? do_user_addr_fault+0x374/0xe30
[ 1267.218468][ T4454]  __x64_sys_setsockopt+0xbd/0x160
[ 1267.218627][ T4454]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1267.218828][ T4454]  do_syscall_64+0xc1/0x1d0
[ 1267.219000][ T4454]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1267.219198][ T4454] RIP: 0033:0x7f19c930391e
[ 1267.219365][ T4454] 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
[ 1267.219940][ T4454] RSP: 002b:00007ffc28943828 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1267.220188][ T4454] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f19c930391e
[ 1267.220430][ T4454] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1267.220669][ T4454] RBP: 0000000000000008 R08: 0000000000000004 R09: 000000000a149010
[ 1267.220908][ T4454] R10: 00007ffc2894384c R11: 0000000000000246 R12: 0000000000000000
[ 1267.221153][ T4454] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f19c9408000
[ 1267.221407][ T4454]  </TASK>
[ 1267.224299][ T4454] veth0: entered allmulticast mode
[ 1267.224835][ T4454] veth1: entered allmulticast mode
[ 1267.225158][ T4454] veth2: entered allmulticast mode
[ 1267.234454][ T4454] veth3: entered allmulticast mode
[ 1267.234843][ T4454] veth4: entered allmulticast mode
[ 1267.235182][ T4454] veth5: entered allmulticast mode
[ 1277.906017][ T4540] GACT probability NOT on
[ 1277.935986][ T4538] tc (4538) used greatest stack depth: 23496 bytes left
[ 1294.035430][ T4454] veth0: left allmulticast mode
[ 1294.035904][ T4454] veth1: left allmulticast mode
[ 1294.036309][ T4454] veth2: left allmulticast mode
[ 1294.036681][ T4454] veth3: left allmulticast mode
[ 1294.037045][ T4454] veth4: left allmulticast mode
[ 1294.037402][ T4454] veth5: left allmulticast mode