rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P19178 0-...D } 2644 jiffies s: 55913 root: 0x1/T
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19178 Comm: syz-executor.1 Not tainted 6.8.0-rc6-syzkaller-01978-g885c36e59f46 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:find_held_lock kernel/locking/lockdep.c:5242 [inline]
RIP: 0010:__lock_release kernel/locking/lockdep.c:5429 [inline]
RIP: 0010:lock_release+0x23a/0x9d0 kernel/locking/lockdep.c:5774
Code: 48 89 5c 24 28 4c 89 64 24 08 48 89 44 24 38 8d 58 ff 4d 8d b5 c0 0a 00 00 4c 63 e3 41 83 fc 31 0f 83 ea 05 00 00 4f 8d 2c a4 <4f> 8d 3c ee 4c 89 ff 48 8b 74 24 20 e8 45 65 fa 09 89 5c 24 44 89
RSP: 0018:ffffc90000007900 EFLAGS: 00000083
RAX: 0000000000000005 RBX: 0000000000000004 RCX: ffffc90000007903
RDX: 1ffff92000000f30 RSI: ffffffff8baac340 RDI: ffffffff8bfe7fe0
RBP: ffffc90000007a30 R08: ffffffff8f85ff2f R09: 1ffffffff1f0bfe5
R10: dffffc0000000000 R11: fffffbfff1f0bfe6 R12: 0000000000000004
R13: 0000000000000014 R14: ffff88802739a880 R15: dffffc0000000000
FS:  00007fb16025c6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000600 CR3: 0000000011b26000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_objects_fill_pool+0xc0/0x9b0 lib/debugobjects.c:616
 debug_object_activate+0x135/0x510 lib/debugobjects.c:704
 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
 debug_activate kernel/time/hrtimer.c:477 [inline]
 enqueue_hrtimer+0x30/0x3a0 kernel/time/hrtimer.c:1087
 __run_hrtimer kernel/time/hrtimer.c:1706 [inline]
 __hrtimer_run_queues+0x6b4/0xd00 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x107/0x3a0 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:debug_lockdep_rcu_enabled+0x0/0x40 kernel/rcu/update.c:319
Code: aa 8b 48 c7 c6 20 d9 aa 8b e8 0c d3 eb f5 90 0f 0b 90 90 90 eb c6 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 31 c0 83 3d bb 5a 1a 04 00 74 1d 83 3d e6 8c 1a 04 00
RSP: 0018:ffffc900033fe980 EFLAGS: 00000282
RAX: ffffffff8a142743 RBX: ffff8880a6854110 RCX: 0000000000040000
RDX: ffffc90003d12000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 1ffff9200067fdac R08: ffffffff8a169b84 R09: 0000000000000000
R10: ffffc900033fea20 R11: ffffffff8a142720 R12: ffffc900033fed60
R13: dffffc0000000000 R14: ffff88816a703800 R15: ffff88816a703800
 read_pnet include/net/net_namespace.h:383 [inline]
 dev_net include/linux/netdevice.h:2654 [inline]
 fib6_ifup+0x48/0x180 net/ipv6/route.c:4765
 fib6_clean_node+0x2ae/0x5e0 net/ipv6/ip6_fib.c:2198
 fib6_walk_continue+0x658/0x8f0 net/ipv6/ip6_fib.c:2123
 fib6_walk+0x168/0x2b0 net/ipv6/ip6_fib.c:2171
 fib6_clean_tree net/ipv6/ip6_fib.c:2251 [inline]
 __fib6_clean_all+0x31f/0x4b0 net/ipv6/ip6_fib.c:2267
 rt6_sync_up+0x186/0x200 net/ipv6/route.c:4789
 addrconf_notify+0xb47/0x1020 net/ipv6/addrconf.c:3749
 notifier_call_chain+0x18f/0x3b0 kernel/notifier.c:93
 __dev_notify_flags+0x207/0x400
 rtnl_newlink_create net/core/rtnetlink.c:3505 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3717 [inline]
 rtnl_newlink+0x1a43/0x20a0 net/core/rtnetlink.c:3730
 rtnetlink_rcv_msg+0x89b/0x10d0 net/core/rtnetlink.c:6598
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2547
 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
 netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1361
 netlink_sendmsg+0x8e0/0xcb0 net/netlink/af_netlink.c:1902
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fb15f47dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb16025c0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb15f5abf80 RCX: 00007fb15f47dda9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005
RBP: 00007fb15f4ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb15f5abf80 R15: 00007fff2515a9f8
 </TASK>