[ 1902.638281][ T6216] 
[ 1902.638404][ T6216] =============================
[ 1902.639358][ T6216] WARNING: suspicious RCU usage
[ 1902.639908][ T6216] 6.12.0-rc6-virtme #1 Not tainted
[ 1902.640066][ T6216] -----------------------------
[ 1902.640268][ T6216] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1902.640506][ T6216] 
[ 1902.640506][ T6216] other info that might help us debug this:
[ 1902.640506][ T6216] 
[ 1902.640801][ T6216] 
[ 1902.640801][ T6216] rcu_scheduler_active = 2, debug_locks = 1
[ 1902.641028][ T6216] no locks held by smcrouted/6216.
[ 1902.641178][ T6216] 
[ 1902.641178][ T6216] stack backtrace:
[ 1902.641372][ T6216] CPU: 0 UID: 0 PID: 6216 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1902.641664][ T6216] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1902.642100][ T6216] Call Trace:
[ 1902.642238][ T6216]  <TASK>
[ 1902.642352][ T6216]  dump_stack_lvl+0xb0/0xd0
[ 1902.642531][ T6216]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1902.642698][ T6216]  ip6mr_get_table+0x142/0x190
[ 1902.642887][ T6216]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1902.643065][ T6216]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1902.643294][ T6216]  ? __lock_release+0x103/0x460
[ 1902.643458][ T6216]  ? __might_fault+0x11b/0x170
[ 1902.643628][ T6216]  ? trace_lock_acquire+0x14d/0x1f0
[ 1902.643788][ T6216]  ? __might_fault+0xc3/0x170
[ 1902.643967][ T6216]  ? lock_acquire+0x32/0xc0
[ 1902.644116][ T6216]  ? __might_fault+0xc3/0x170
[ 1902.644297][ T6216]  ? __might_fault+0x11b/0x170
[ 1902.644457][ T6216]  do_ipv6_setsockopt+0x705/0x34e0
[ 1902.644621][ T6216]  ? __lock_release+0xe0/0x460
[ 1902.644772][ T6216]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1902.644990][ T6216]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1902.645161][ T6216]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1902.645356][ T6216]  ? validate_chain+0x1fe/0xae0
[ 1902.645523][ T6216]  ? is_bpf_text_address+0x67/0x120
[ 1902.645710][ T6216]  ? __pfx_validate_chain+0x10/0x10
[ 1902.645880][ T6216]  ? hlock_class+0x4e/0x130
[ 1902.646047][ T6216]  ? mark_lock+0x38/0x3e0
[ 1902.646186][ T6216]  ? __lock_acquire+0xb3f/0x1580
[ 1902.646356][ T6216]  ? queued_spin_lock_slowpath+0xee/0x970
[ 1902.646544][ T6216]  ? __pfx_queued_spin_lock_slowpath+0x10/0x10
[ 1902.646757][ T6216]  ? find_held_lock+0x2c/0x110
[ 1902.646949][ T6216]  ? ipv6_setsockopt+0x7f/0xe0
[ 1902.647113][ T6216]  ipv6_setsockopt+0x7f/0xe0
[ 1902.647281][ T6216]  rawv6_setsockopt+0xb7/0x550
[ 1902.647456][ T6216]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1902.647619][ T6216]  ? __lock_acquire+0xb3f/0x1580
[ 1902.647790][ T6216]  ? kfree+0x2d/0x340
[ 1902.647930][ T6216]  do_sock_setsockopt+0x149/0x3a0
[ 1902.648105][ T6216]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1902.648269][ T6216]  ? __lock_release+0x103/0x460
[ 1902.648431][ T6216]  ? fd_install+0x1d1/0x5a0
[ 1902.648632][ T6216]  ? trace_lock_acquire+0x14d/0x1f0
[ 1902.648798][ T6216]  ? fdget+0x52/0x1e0
[ 1902.648929][ T6216]  __sys_setsockopt+0x104/0x1a0
[ 1902.649096][ T6216]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1902.649259][ T6216]  ? __sys_socket+0x168/0x1e0
[ 1902.649443][ T6216]  ? __pfx___sys_socket+0x10/0x10
[ 1902.649622][ T6216]  __x64_sys_setsockopt+0xbd/0x160
[ 1902.649805][ T6216]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1902.649997][ T6216]  do_syscall_64+0xc1/0x1d0
[ 1902.650166][ T6216]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1902.650385][ T6216] RIP: 0033:0x7f9c69e6491e
[ 1902.650544][ T6216] 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
[ 1902.651117][ T6216] RSP: 002b:00007ffc433485e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1902.651377][ T6216] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9c69e6491e
[ 1902.651621][ T6216] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1902.651854][ T6216] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1902.652107][ T6216] R10: 00007ffc4334860c R11: 0000000000000246 R12: 0000000000000000
[ 1902.652359][ T6216] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f9c69f69000
[ 1902.652646][ T6216]  </TASK>
[ 1902.664889][ T6216] veth0: entered allmulticast mode
[ 1902.665573][ T6216] veth1: entered allmulticast mode
[ 1902.666106][ T6216] veth2: entered allmulticast mode
[ 1902.666700][ T6216] veth3: entered allmulticast mode
[ 1902.667176][ T6216] veth4: entered allmulticast mode
[ 1902.667748][ T6216] veth5: entered allmulticast mode
[ 1949.316826][ T6216] veth0: left allmulticast mode
[ 1949.317167][ T6216] veth1: left allmulticast mode
[ 1949.317412][ T6216] veth2: left allmulticast mode
[ 1949.317677][ T6216] veth3: left allmulticast mode
[ 1949.317949][ T6216] veth4: left allmulticast mode
[ 1949.318196][ T6216] veth5: left allmulticast mode