rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=b654/1/0x4000000000000000 softirq=52463/52463 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=38593, q=553 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 12188 Comm: syz.3.1607 Not tainted 6.16.0-rc1-syzkaller-00203-g4774cfe3543a #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rb_insert_color_cached include/linux/rbtree.h:114 [inline]
RIP: 0010:rb_add_cached include/linux/rbtree.h:183 [inline]
RIP: 0010:timerqueue_add+0x1b1/0x330 lib/timerqueue.c:40
Code: 00 0f 85 89 01 00 00 48 c7 45 10 00 00 00 00 31 ff 44 89 f6 49 89 2f e8 fd eb 3f f6 45 84 f6 0f 85 a9 00 00 00 e8 0f f1 3f f6 <48> 8b 34 24 48 89 ef e8 33 8f ff ff e8 fe f0 3f f6 44 89 f0 48 83
RSP: 0018:ffffc90000007e00 EFLAGS: 00000046
RAX: 0000000080010001 RBX: ffff888032e6d340 RCX: ffffffff8b7c2ad3
RDX: ffff88801f7fc880 RSI: ffffffff8b7c2ae1 RDI: 0000000000000001
RBP: ffff88802828f340 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff9af7a750 R12: dffffc0000000000
R13: 184d7f0d335fc1c8 R14: 0000000000000000 R15: ffff888032e6d348
FS:  00007f27ed4036c0(0000) GS:ffff888124754000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f27ed401fb8 CR3: 000000007e435000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1778 [inline]
 __hrtimer_run_queues+0x8ff/0xad0 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x3f0 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x6a/0x20a0 arch/x86/kernel/unwind_orc.c:470
Code: 48 83 c4 38 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 48 b8 00 00 00 00 00 fc ff df 49 8d 6d 48 48 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 5e 18 00 00 49 8b 45 48 48 89 44 24 08 49 8d 45
RSP: 0018:ffffc9000be77858 EFLAGS: 00000a06
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc9000be7781c
RDX: 1ffff920017cef22 RSI: ffffffff8998b0ee RDI: ffffc9000be778c8
RBP: ffffc9000be77910 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000084fee R12: ffffffff81a77fd0
R13: ffffc9000be778c8 R14: 0000000000000000 R15: ffff88801f7fc880
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4328 [inline]
 __kmalloc_noprof+0x223/0x510 mm/slub.c:4340
 kmalloc_noprof include/linux/slab.h:909 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 lsm_blob_alloc+0x68/0x90 security/security.c:684
 lsm_sock_alloc security/security.c:4839 [inline]
 security_sk_alloc+0x30/0x270 security/security.c:4855
 sk_prot_alloc+0x1c7/0x2a0 net/core/sock.c:2250
 sk_alloc+0x36/0xc20 net/core/sock.c:2303
 __netlink_create+0x5e/0x2c0 net/netlink/af_netlink.c:629
 netlink_create+0x39e/0x620 net/netlink/af_netlink.c:687
 __sock_create+0x338/0x8d0 net/socket.c:1541
 sock_create net/socket.c:1599 [inline]
 __sys_socket_create net/socket.c:1636 [inline]
 __sys_socket+0x14d/0x260 net/socket.c:1683
 __do_sys_socket net/socket.c:1697 [inline]
 __se_sys_socket net/socket.c:1695 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1695
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f27ec590847
Code: f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f27ed401fa8 EFLAGS: 00000286 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f27ec7b6160 RCX: 00007f27ec590847
RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010
RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000006c0 R11: 0000000000000286 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f27ec7b6160 R15: 00007ffe7bb136e8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g38593 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=38931
rcu: rcu_preempt kthread starved for 10502 jiffies! g38593 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:27784 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x116a/0x5de0 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6878
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2256
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>