[ 1840.726019][T12391] 
[ 1840.726162][T12391] =============================
[ 1840.726318][T12391] WARNING: suspicious RCU usage
[ 1840.726478][T12391] 6.12.0-rc6-virtme #1 Not tainted
[ 1840.726632][T12391] -----------------------------
[ 1840.726784][T12391] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1840.727055][T12391] 
[ 1840.727055][T12391] other info that might help us debug this:
[ 1840.727055][T12391] 
[ 1840.727351][T12391] 
[ 1840.727351][T12391] rcu_scheduler_active = 2, debug_locks = 1
[ 1840.727572][T12391] no locks held by smcrouted/12391.
[ 1840.727726][T12391] 
[ 1840.727726][T12391] stack backtrace:
[ 1840.727928][T12391] CPU: 3 UID: 0 PID: 12391 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1840.728196][T12391] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1840.728534][T12391] Call Trace:
[ 1840.728659][T12391]  <TASK>
[ 1840.728747][T12391]  dump_stack_lvl+0xb0/0xd0
[ 1840.728916][T12391]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1840.729073][T12391]  ip6mr_get_table+0x142/0x190
[ 1840.729231][T12391]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1840.729386][T12391]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1840.729585][T12391]  ? __lock_release+0x103/0x460
[ 1840.729739][T12391]  ? __might_fault+0x11b/0x170
[ 1840.729897][T12391]  ? trace_lock_acquire+0x14d/0x1f0
[ 1840.730057][T12391]  ? __might_fault+0xc3/0x170
[ 1840.730206][T12391]  ? lock_acquire+0x32/0xc0
[ 1840.730357][T12391]  ? __might_fault+0xc3/0x170
[ 1840.730508][T12391]  ? __might_fault+0x11b/0x170
[ 1840.730665][T12391]  do_ipv6_setsockopt+0x705/0x34e0
[ 1840.730819][T12391]  ? __lock_release+0xe0/0x460
[ 1840.730974][T12391]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1840.731213][T12391]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1840.731366][T12391]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1840.731517][T12391]  ? validate_chain+0x1fe/0xae0
[ 1840.731671][T12391]  ? is_bpf_text_address+0x67/0x120
[ 1840.731828][T12391]  ? __pfx_validate_chain+0x10/0x10
[ 1840.731985][T12391]  ? hlock_class+0x4e/0x130
[ 1840.732135][T12391]  ? mark_lock+0x38/0x3e0
[ 1840.732255][T12391]  ? __lock_acquire+0xb3f/0x1580
[ 1840.732419][T12391]  ? find_held_lock+0x2c/0x110
[ 1840.732588][T12391]  ? ipv6_setsockopt+0x7f/0xe0
[ 1840.732738][T12391]  ipv6_setsockopt+0x7f/0xe0
[ 1840.732890][T12391]  rawv6_setsockopt+0xb7/0x550
[ 1840.733046][T12391]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1840.733197][T12391]  ? __lock_acquire+0xb3f/0x1580
[ 1840.733350][T12391]  ? kfree+0x2d/0x340
[ 1840.733474][T12391]  do_sock_setsockopt+0x149/0x3a0
[ 1840.733636][T12391]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1840.733796][T12391]  ? __lock_release+0x103/0x460
[ 1840.733947][T12391]  ? fd_install+0x1d1/0x5a0
[ 1840.734111][T12391]  ? trace_lock_acquire+0x14d/0x1f0
[ 1840.734266][T12391]  ? fdget+0x52/0x1e0
[ 1840.734386][T12391]  __sys_setsockopt+0x104/0x1a0
[ 1840.734543][T12391]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1840.734699][T12391]  ? __sys_socket+0x168/0x1e0
[ 1840.734853][T12391]  ? __pfx___sys_socket+0x10/0x10
[ 1840.735027][T12391]  __x64_sys_setsockopt+0xbd/0x160
[ 1840.735183][T12391]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1840.735371][T12391]  do_syscall_64+0xc1/0x1d0
[ 1840.735529][T12391]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1840.735720][T12391] RIP: 0033:0x7fdab2e7091e
[ 1840.735889][T12391] 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
[ 1840.736419][T12391] RSP: 002b:00007ffd65992888 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1840.736652][T12391] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdab2e7091e
[ 1840.736879][T12391] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1840.737108][T12391] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1840.737341][T12391] R10: 00007ffd659928ac R11: 0000000000000246 R12: 0000000000000000
[ 1840.737570][T12391] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007fdab2f75000
[ 1840.737808][T12391]  </TASK>
[ 1840.757862][T12391] veth0: entered allmulticast mode
[ 1840.758996][T12391] veth1: entered allmulticast mode
[ 1840.759314][T12391] veth2: entered allmulticast mode
[ 1840.759613][T12391] veth3: entered allmulticast mode
[ 1870.843194][T12391] veth0: left allmulticast mode
[ 1870.843524][T12391] veth1: left allmulticast mode
[ 1870.843771][T12391] veth2: left allmulticast mode
[ 1870.844040][T12391] veth3: left allmulticast mode