rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (3 ticks this GP) idle=b824/1/0x4000000000000000 softirq=25461/25461 fqs=3
rcu: 	(detected by 1, t=10504 jiffies, g=17889, q=681 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5815 Comm: syz-executor Not tainted 6.16.0-rc3-syzkaller-00072-gee88bddf7f2f #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rb_insert_color+0x19/0x810 lib/rbtree.c:435
Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 41 57 48 89 fa 41 56 48 c1 ea 03 <41> 55 41 54 49 89 fc 55 53 48 83 ec 08 80 3c 02 00 0f 85 af 05 00
RSP: 0018:ffffc90000007de8 EFLAGS: 00000802
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8b7ca9b8
RDX: 1ffff1100fdc2868 RSI: ffff8880b8427e50 RDI: ffff88807ee14340
RBP: ffff88807ee14340 R08: 0000000000000006 R09: ffff88807ee14340
R10: ffff88807ee14340 R11: ffffffff9afbeae8 R12: ffff8880b8427c80
R13: 0000000000000000 R14: ffff88807ee14340 R15: 0000000000000001
FS:  000055559336a500(0000) GS:ffff888124752000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efddcb83338 CR3: 000000005cbc0000 CR4: 00000000003526f0
DR0: 0000000000004000 DR1: 00000000080a0000 DR2: 0000000000000000
DR3: 0000000000004000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rb_insert_color_cached include/linux/rbtree.h:114 [inline]
 rb_add_cached include/linux/rbtree.h:183 [inline]
 timerqueue_add+0x28c/0x330 lib/timerqueue.c:40
 __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:deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
RIP: 0010:unwind_next_frame+0xb73/0x20a0 arch/x86/kernel/unwind_orc.c:585
Code: f5 ff ff 4c 89 f7 e8 ac 2b b8 00 e9 0f f6 ff ff 49 8d 76 f8 ba 08 00 00 00 4d 8d 7d 34 4c 89 ef 4c 89 44 24 28 48 89 4c 24 20 <48> 89 74 24 18 e8 73 f2 ff ff 84 c0 0f 84 fd f7 ff ff 48 8b 7c 24
RSP: 0018:ffffc9000425f9a8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000001 RCX: ffffffff914cc9c2
RDX: 0000000000000008 RSI: ffffc9000425ff08 RDI: ffffc9000425fa18
RBP: ffffc9000425fa60 R08: ffffffff914cc9c6 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000001353f R12: ffffc9000425fa68
R13: ffffc9000425fa18 R14: ffffc9000425ff10 R15: ffffc9000425fa4c
 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
 kmalloc_noprof include/linux/slab.h:905 [inline]
 slab_free_hook mm/slub.c:2333 [inline]
 slab_free mm/slub.c:4643 [inline]
 kmem_cache_free+0x142/0x4d0 mm/slub.c:4745
 file_free fs/file_table.c:76 [inline]
 __fput+0x68d/0xb70 fs/file_table.c:478
 fput_close_sync+0x118/0x260 fs/file_table.c:570
 __do_sys_close fs/open.c:1589 [inline]
 __se_sys_close fs/open.c:1574 [inline]
 __x64_sys_close+0x8b/0x120 fs/open.c:1574
 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: 0033:0x7efddc98d58a
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24
RSP: 002b:00007ffe65efcb80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007efddc98d58a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007ffe65efcbdc R08: 00000000000002d8 R09: 0079746972756365
R10: 00007efddcb839a0 R11: 0000000000000293 R12: 000000000000006f
R13: 0000000000000063 R14: 0000000000029cce R15: 00007ffe65efcc30
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10408 jiffies! g17889 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=11508
rcu: rcu_preempt kthread starved for 10409 jiffies! g17889 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+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>