[ 1817.925939][T12899] 
[ 1817.926099][T12899] =============================
[ 1817.926269][T12899] WARNING: suspicious RCU usage
[ 1817.926450][T12899] 6.12.0-rc6-virtme #1 Not tainted
[ 1817.927359][T12899] -----------------------------
[ 1817.927550][T12899] net/ipv6/ip6mr.c:132 RCU-list traversed in non-reader section!!
[ 1817.927804][T12899] 
[ 1817.927804][T12899] other info that might help us debug this:
[ 1817.927804][T12899] 
[ 1817.928125][T12899] 
[ 1817.928125][T12899] rcu_scheduler_active = 2, debug_locks = 1
[ 1817.928379][T12899] no locks held by smcrouted/12899.
[ 1817.928568][T12899] 
[ 1817.928568][T12899] stack backtrace:
[ 1817.928779][T12899] CPU: 3 UID: 0 PID: 12899 Comm: smcrouted Not tainted 6.12.0-rc6-virtme #1
[ 1817.929079][T12899] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1817.929460][T12899] Call Trace:
[ 1817.929597][T12899]  <TASK>
[ 1817.929691][T12899]  dump_stack_lvl+0xb0/0xd0
[ 1817.929884][T12899]  lockdep_rcu_suspicious+0x1ea/0x280
[ 1817.930058][T12899]  ip6mr_get_table+0x142/0x190
[ 1817.930235][T12899]  ip6_mroute_setsockopt+0x185/0x12d0
[ 1817.930411][T12899]  ? __pfx_ip6_mroute_setsockopt+0x10/0x10
[ 1817.930636][T12899]  ? __lock_release+0x103/0x460
[ 1817.930817][T12899]  ? __might_fault+0x11b/0x170
[ 1817.930995][T12899]  ? trace_lock_acquire+0x14d/0x1f0
[ 1817.931180][T12899]  ? __might_fault+0xc3/0x170
[ 1817.931350][T12899]  ? lock_acquire+0x32/0xc0
[ 1817.931531][T12899]  ? __might_fault+0xc3/0x170
[ 1817.931708][T12899]  ? __might_fault+0x11b/0x170
[ 1817.931896][T12899]  do_ipv6_setsockopt+0x705/0x34e0
[ 1817.932073][T12899]  ? __lock_release+0xe0/0x460
[ 1817.932242][T12899]  ? __pfx_do_ipv6_setsockopt+0x10/0x10
[ 1817.932412][T12899]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 1817.932590][T12899]  ? rcu_read_lock_any_held+0x43/0xb0
[ 1817.932764][T12899]  ? validate_chain+0x1fe/0xae0
[ 1817.932977][T12899]  ? is_bpf_text_address+0x67/0x120
[ 1817.933149][T12899]  ? __pfx_validate_chain+0x10/0x10
[ 1817.933311][T12899]  ? hlock_class+0x4e/0x130
[ 1817.933477][T12899]  ? mark_lock+0x38/0x3e0
[ 1817.933602][T12899]  ? __lock_acquire+0xb3f/0x1580
[ 1817.933766][T12899]  ? find_held_lock+0x2c/0x110
[ 1817.933932][T12899]  ? ipv6_setsockopt+0x7f/0xe0
[ 1817.934093][T12899]  ipv6_setsockopt+0x7f/0xe0
[ 1817.934264][T12899]  rawv6_setsockopt+0xb7/0x550
[ 1817.934431][T12899]  ? __pfx_rawv6_setsockopt+0x10/0x10
[ 1817.934587][T12899]  ? __lock_acquire+0xb3f/0x1580
[ 1817.934778][T12899]  ? kfree+0x2d/0x340
[ 1817.934904][T12899]  do_sock_setsockopt+0x149/0x3a0
[ 1817.935064][T12899]  ? __pfx_do_sock_setsockopt+0x10/0x10
[ 1817.935230][T12899]  ? __lock_release+0x103/0x460
[ 1817.935400][T12899]  ? fd_install+0x1d1/0x5a0
[ 1817.935567][T12899]  ? trace_lock_acquire+0x14d/0x1f0
[ 1817.935736][T12899]  ? fdget+0x52/0x1e0
[ 1817.935861][T12899]  __sys_setsockopt+0x104/0x1a0
[ 1817.936029][T12899]  ? __pfx___sys_setsockopt+0x10/0x10
[ 1817.936192][T12899]  ? __sys_socket+0x168/0x1e0
[ 1817.936351][T12899]  ? __pfx___sys_socket+0x10/0x10
[ 1817.936511][T12899]  __x64_sys_setsockopt+0xbd/0x160
[ 1817.936677][T12899]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 1817.936888][T12899]  do_syscall_64+0xc1/0x1d0
[ 1817.937061][T12899]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 1817.937255][T12899] RIP: 0033:0x7f20b62a191e
[ 1817.937421][T12899] 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
[ 1817.937986][T12899] RSP: 002b:00007ffeee0357e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1817.938240][T12899] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f20b62a191e
[ 1817.938475][T12899] RDX: 00000000000000c8 RSI: 0000000000000029 RDI: 0000000000000008
[ 1817.938704][T12899] RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000000
[ 1817.939269][T12899] R10: 00007ffeee03580c R11: 0000000000000246 R12: 0000000000000000
[ 1817.939502][T12899] R13: 0000000000402650 R14: 0000000000411dd8 R15: 00007f20b63a6000
[ 1817.939753][T12899]  </TASK>
[ 1817.945937][T12899] veth0: entered allmulticast mode
[ 1817.946499][T12899] veth1: entered allmulticast mode
[ 1817.946858][T12899] veth2: entered allmulticast mode
[ 1817.947180][T12899] veth3: entered allmulticast mode
[ 1848.409569][T12899] veth0: left allmulticast mode
[ 1848.409866][T12899] veth1: left allmulticast mode
[ 1848.410102][T12899] veth2: left allmulticast mode
[ 1848.410331][T12899] veth3: left allmulticast mode