[ 1842.044994][T12528] 
[ 1842.045127][T12528] =============================
[ 1842.045295][T12528] WARNING: suspicious RCU usage
[ 1842.045465][T12528] 6.12.0-rc6-virtme #1 Not tainted
[ 1842.045658][T12528] -----------------------------
[ 1842.045822][T12528] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1842.046062][T12528] 
[ 1842.046062][T12528] other info that might help us debug this:
[ 1842.046062][T12528] 
[ 1842.046382][T12528] 
[ 1842.046382][T12528] rcu_scheduler_active = 2, debug_locks = 1
[ 1842.047419][T12528] no locks held by smcrouted/12528.
[ 1842.047744][T12528] 
[ 1842.047744][T12528] stack backtrace:
[ 1842.047956][T12528] CPU: 1 UID: 0 PID: 12528 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1842.048238][T12528] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1842.048614][T12528] Call Trace:
[ 1842.048748][T12528]  <TASK>
[ 1842.048841][T12528]  dump_stack_lvl+0xb0/0xd0
[ 1842.049021][T12528]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1842.049194][T12528]  ip6mr_get_table+0x142/0x190
[ 1842.049364][T12528]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1842.049530][T12528]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1842.049752][T12528]  ? __lock_release+0x103/0x460
[ 1842.049916][T12528]  ? __might_fault+0x11b/0x170
[ 1842.050084][T12528]  ? trace_lock_acquire+0x14d/0x1f0
[ 1842.050256][T12528]  ? __might_fault+0xc3/0x170
[ 1842.050421][T12528]  ? lock_acquire+0x32/0xc0
[ 1842.050600][T12528]  ? __might_fault+0xc3/0x170
[ 1842.050771][T12528]  ? __might_fault+0x11b/0x170
[ 1842.050942][T12528]  do_ipv6_setsockopt+0x705/0x34e0
[ 1842.051113][T12528]  ? __lock_release+0xe0/0x460
[ 1842.051275][T12528]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1842.051436][T12528]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1842.051615][T12528]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1842.051781][T12528]  ? validate_chain+0x1fe/0xae0
[ 1842.051950][T12528]  ? is_bpf_text_address+0x67/0x120
[ 1842.052123][T12528]  ? __pfx_validate_chain+0x10/0x10
[ 1842.052284][T12528]  ? hlock_class+0x4e/0x130
[ 1842.052450][T12528]  ? mark_lock+0x38/0x3e0
[ 1842.052592][T12528]  ? __lock_acquire+0xb3f/0x1580
[ 1842.052766][T12528]  ? find_held_lock+0x2c/0x110
[ 1842.052944][T12528]  ? ipv6_setsockopt+0x7f/0xe0
[ 1842.053106][T12528]  ipv6_setsockopt+0x7f/0xe0
[ 1842.053278][T12528]  rawv6_setsockopt+0xb7/0x550
[ 1842.053445][T12528]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1842.053613][T12528]  ? __lock_acquire+0xb3f/0x1580
[ 1842.053780][T12528]  ? kfree+0x2d/0x340
[ 1842.053910][T12528]  do_sock_setsockopt+0x149/0x3a0
[ 1842.054074][T12528]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1842.054235][T12528]  ? __lock_release+0x103/0x460
[ 1842.054404][T12528]  ? fd_install+0x1d1/0x5a0
[ 1842.054588][T12528]  ? trace_lock_acquire+0x14d/0x1f0
[ 1842.054758][T12528]  ? fdget+0x52/0x1e0
[ 1842.054885][T12528]  __sys_setsockopt+0x104/0x1a0
[ 1842.055051][T12528]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1842.055214][T12528]  ? __sys_socket+0x168/0x1e0
[ 1842.055376][T12528]  ? __pfx___sys_socket+0x10/0x10
[ 1842.055545][T12528]  __x64_sys_setsockopt+0xbd/0x160
[ 1842.055714][T12528]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1842.055917][T12528]  do_syscall_64+0xc1/0x1d0
[ 1842.056082][T12528]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1842.056348][T12528] RIP: 0033:0x7f93b564191e
[ 1842.056520][T12528] 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
[ 1842.057101][T12528] RSP: 002b:00007ffe3218b2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1842.057348][T12528] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f93b564191e
[ 1842.057609][T12528] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1842.057858][T12528] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1842.058108][T12528] R10: 00007ffe3218b2cc R11: 0000000000000246 R12: 0000000000000000
[ 1842.058348][T12528] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f93b5746000
[ 1842.058612][T12528]  </TASK>
[ 1842.064191][T12528] veth0: entered allmulticast mode
[ 1842.064852][T12528] veth1: entered allmulticast mode
[ 1842.065219][T12528] veth2: entered allmulticast mode
[ 1842.065575][T12528] veth3: entered allmulticast mode
[ 1871.265639][T12528] veth0: left allmulticast mode
[ 1871.265937][T12528] veth1: left allmulticast mode
[ 1871.266170][T12528] veth2: left allmulticast mode
[ 1871.266396][T12528] veth3: left allmulticast mode