[ 6222.464518][T28227] sctp: Hash tables configured (bind 32/56)
[ 6263.877287][T28409] 
[ 6263.877736][T28409] =============================
[ 6263.877916][T28409] WARNING: suspicious RCU usage
[ 6263.878098][T28409] 6.12.0-rc5-virtme #1 Not tainted
[ 6263.878274][T28409] -----------------------------
[ 6263.878513][T28409] net/core/dev.c:876 RCU-list traversed in non-reader section!!
[ 6263.878768][T28409] 
[ 6263.878768][T28409] other info that might help us debug this:
[ 6263.878768][T28409] 
[ 6263.879772][T28409] 
[ 6263.879772][T28409] rcu_scheduler_active = 2, debug_locks = 1
[ 6263.880073][T28409] 1 lock held by sctp_hello/28409:
[ 6263.880249][T28409]  #0: ffff8880030f3b98 (sk_lock-AF_INET6){+.+.}-{0:0}, at: sctp_bind+0x1f/0xe0 [sctp]
[ 6263.880836][T28409] 
[ 6263.880836][T28409] stack backtrace:
[ 6263.881053][T28409] CPU: 0 UID: 0 PID: 28409 Comm: sctp_hello Not tainted 6.12.0-rc5-virtme #1
[ 6263.881358][T28409] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 6263.881848][T28409] Call Trace:
[ 6263.881983][T28409]  <TASK>
[ 6263.882077][T28409]  dump_stack_lvl+0xb0/0xd0
[ 6263.882264][T28409]  lockdep_rcu_suspicious+0x1ea/0x280
[ 6263.882542][T28409]  dev_get_by_index_rcu+0x14f/0x190
[ 6263.882720][T28409]  sctp_v6_available+0xaf/0x3a0 [sctp]
[ 6263.882931][T28409]  sctp_do_bind+0x128/0x5f0 [sctp]
[ 6263.883169][T28409]  ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 6263.883401][T28409]  sctp_bind+0x86/0xe0 [sctp]
[ 6263.883707][T28409]  inet6_bind_sk+0xd0/0x1c0
[ 6263.883888][T28409]  ? __pfx_inet6_bind_sk+0x10/0x10
[ 6263.884061][T28409]  ? __might_fault+0x11b/0x170
[ 6263.884240][T28409]  __sys_bind+0x114/0x1d0
[ 6263.884371][T28409]  ? __pfx___sys_bind+0x10/0x10
[ 6263.884632][T28409]  ? __up_read+0x1a7/0x780
[ 6263.884811][T28409]  ? do_user_addr_fault+0x972/0xe30
[ 6263.885001][T28409]  ? do_user_addr_fault+0x97c/0xe30
[ 6263.885176][T28409]  __x64_sys_bind+0x72/0xb0
[ 6263.885446][T28409]  do_syscall_64+0xc1/0x1d0
[ 6263.885627][T28409]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 6263.885841][T28409] RIP: 0033:0x7f972f286b2b
[ 6263.886018][T28409] Code: 73 01 c3 48 8b 0d d5 92 1b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 31 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a5 92 1b 00 f7 d8 64 89 01 48
[ 6263.886572][T28409] RSP: 002b:00007ffc8402f1a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000031
[ 6263.886834][T28409] RAX: ffffffffffffffda RBX: 00007ffc8402f398 RCX: 00007f972f286b2b
[ 6263.887119][T28409] RDX: 000000000000001c RSI: 00007ffc8402f1e0 RDI: 0000000000000005
[ 6263.887367][T28409] RBP: 0000000000000005 R08: 1999999999999999 R09: 0000000000000000
[ 6263.887706][T28409] R10: 00007f972f257d90 R11: 0000000000000202 R12: 00007ffc840309da
[ 6263.888048][T28409] R13: 0000000000000000 R14: 0000000000403e00 R15: 00007f972f491000
[ 6263.888313][T28409]  </TASK>