ip6gre0 speed is unknown, defaulting to 1000
BUG: MAX_LOCKDEP_ENTRIES too low!
turning off the locking correctness validator.
CPU: 1 PID: 11993 Comm: syz-executor.3 Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 alloc_list_entry kernel/locking/lockdep.c:1353 [inline]
 add_lock_to_list.constprop.0.cold+0x11/0x18 kernel/locking/lockdep.c:1374
 check_prev_add kernel/locking/lockdep.c:3007 [inline]
 check_prevs_add kernel/locking/lockdep.c:3060 [inline]
 validate_chain kernel/locking/lockdep.c:3675 [inline]
 __lock_acquire+0x2f37/0x54c0 kernel/locking/lockdep.c:4901
 lock_acquire kernel/locking/lockdep.c:5511 [inline]
 lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159
 swake_up_one+0x16/0x1b0 kernel/sched/swait.c:52
 rcu_report_exp_cpu_mult+0x18f/0x3a0 kernel/rcu/tree_exp.h:250
 rcu_report_exp_rdp kernel/rcu/tree_exp.h:259 [inline]
 rcu_preempt_deferred_qs_irqrestore+0x56f/0xb20 kernel/rcu/tree_plugin.h:478
 rcu_note_context_switch+0x183/0x16e0 kernel/rcu/tree_plugin.h:321
 __schedule+0x214/0x21b0 kernel/sched/core.c:4973
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:5233
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35
 vprintk_emit+0x1fb/0x560 kernel/printk/printk.c:2099
 vprintk_func+0x8d/0x1e0 kernel/printk/printk_safe.c:401
 printk+0xba/0xed kernel/printk/printk.c:2146
 ib_get_eth_speed.cold+0x19/0x1e drivers/infiniband/core/verbs.c:1828
 rxe_query_port+0x13d/0x2d0 drivers/infiniband/sw/rxe/rxe_verbs.c:41
 __ib_query_port drivers/infiniband/core/device.c:2055 [inline]
 ib_query_port drivers/infiniband/core/device.c:2090 [inline]
 ib_query_port+0x4ec/0xa00 drivers/infiniband/core/device.c:2080
 add_port drivers/infiniband/core/sysfs.c:1064 [inline]
 ib_setup_port_attrs+0x1ee/0x14f0 drivers/infiniband/core/sysfs.c:1395
 add_one_compat_dev+0x4ab/0x800 drivers/infiniband/core/device.c:968
 rdma_dev_init_net+0x2dc/0x480 drivers/infiniband/core/device.c:1184
 ops_init+0xaf/0x470 net/core/net_namespace.c:140
 setup_net+0x40f/0xa30 net/core/net_namespace.c:333
 copy_net_ns+0x31e/0x760 net/core/net_namespace.c:474
 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:226
 ksys_unshare+0x445/0x8e0 kernel/fork.c:2998
 __do_sys_unshare kernel/fork.c:3066 [inline]
 __se_sys_unshare kernel/fork.c:3064 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3064
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2f713da188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000064040400
RBP: 00000000004bfce1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffff03bb2ef R14: 00007f2f713da300 R15: 0000000000022000