rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=ac34/1/0x4000000000000000 softirq=54440/3584859 fqs=4
rcu: 	(t=10500 jiffies g=52001 q=353 ncpus=2)
rcu: rcu_preempt kthread starved for 10492 jiffies! g52001 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R  running task     stack:25248 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12975 Comm: syz.6.2265 Not tainted 6.12.0-syzkaller-09087-g3448ad23b34e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:kvm_wait+0x250/0x2c0 arch/x86/kernel/kvm.c:1064
Code: 3b 45 0f b6 f6 44 89 ff 44 89 f6 e8 3a 77 54 00 e8 c5 3e 5c 00 45 38 f7 75 15 66 90 e8 a9 76 54 00 0f 00 2d 92 d6 c6 0a fb f4 <e9> 50 fe ff ff e8 96 76 54 00 fb e9 45 fe ff ff 89 d9 80 e1 07 38
RSP: 0018:ffffc90002f67700 EFLAGS: 000002c3
RAX: ffffffff81416967 RBX: ffff888023504080 RCX: 0000000000080000
RDX: ffffc90012d7b000 RSI: 000000000000a212 RDI: 000000000000a213
RBP: ffffc90002f677d0 R08: ffffffff9431f8c7 R09: 1ffffffff2863f18
R10: dffffc0000000000 R11: fffffbfff2863f19 R12: 1ffff920005ecee4
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000003
FS:  00007fd228b546c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd228b53fb8 CR3: 0000000028178000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000020000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff2 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:596 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline]
 __pv_queued_spin_lock_slowpath+0x8d0/0xdb0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
 queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
 spin_lock include/linux/spinlock.h:351 [inline]
 d_instantiate+0x64/0xa0 fs/dcache.c:1903
 alloc_path_pseudo fs/file_table.c:360 [inline]
 alloc_file_pseudo+0x19e/0x290 fs/file_table.c:372
 __anon_inode_getfile fs/anon_inodes.c:109 [inline]
 __anon_inode_getfd fs/anon_inodes.c:234 [inline]
 anon_inode_getfd+0xce/0x1e0 fs/anon_inodes.c:269
 bpf_prog_load+0x1917/0x20f0 kernel/bpf/syscall.c:2977
 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5790
 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5895 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd227d80809
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd228b54058 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fd227f46080 RCX: 00007fd227d80809
RDX: 0000000000000094 RSI: 0000000020000240 RDI: 0000000000000005
RBP: 00007fd227df393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd227f46080 R15: 00007ffdf0e92bd8
 </TASK>
CPU: 0 UID: 0 PID: 12973 Comm: syz.0.2267 Not tainted 6.12.0-syzkaller-09087-g3448ad23b34e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__sanitizer_cov_trace_switch+0x98/0x120 kernel/kcov.c:351
Code: 00 41 b8 05 00 00 00 4d 85 d2 0f 84 8b 00 00 00 4c 8b 4c 24 20 65 4c 8b 1c 25 c0 d4 03 00 31 d2 eb 08 48 ff c2 49 39 d2 74 71 <4c> 8b 74 d6 10 65 8b 05 94 ee 6d 7e 25 00 01 ff 00 74 11 3d 00 01
RSP: 0018:ffffc90000007348 EFLAGS: 00000216
RAX: 0000000000000100 RBX: 0000000000000004 RCX: ffff88802e1a1e00
RDX: 0000000000000011 RSI: ffffffff8e9920e0 RDI: 0000000000000004
RBP: 000000000000000e R08: 0000000000000005 R09: ffffffff8197d395
R10: 0000000000000020 R11: ffff88802e1a1e00 R12: dffffc0000000000
R13: 0000000000000104 R14: 0000000000000010 R15: 0000000000021664
FS:  000055558af85500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000032a2c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000020000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rb_event_length+0x45/0x400 kernel/trace/ring_buffer.c:218
 rb_read_data_buffer+0x3fd/0x520 kernel/trace/ring_buffer.c:1749
 check_buffer+0x35e/0x850 kernel/trace/ring_buffer.c:4221
 __rb_reserve_next kernel/trace/ring_buffer.c:4320 [inline]
 rb_reserve_next_event kernel/trace/ring_buffer.c:4452 [inline]
 ring_buffer_lock_reserve+0x12a9/0x21c0 kernel/trace/ring_buffer.c:4511
 __trace_buffer_lock_reserve kernel/trace/trace.c:1020 [inline]
 trace_event_buffer_lock_reserve+0x2ab/0x6a0 kernel/trace/trace.c:2746
 trace_event_buffer_reserve+0x2b7/0x3f0 kernel/trace/trace_events.c:515
 do_trace_event_raw_event_bpf_trace_printk kernel/trace/bpf_trace.h:11 [inline]
 trace_event_raw_event_bpf_trace_printk+0x102/0x260 kernel/trace/bpf_trace.h:11
 trace_bpf_trace_printk+0x186/0x1f0 kernel/trace/bpf_trace.h:11
 ____bpf_trace_printk kernel/trace/bpf_trace.c:391 [inline]
 bpf_trace_printk+0x1bf/0x230 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x38/0x3c
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2351 [inline]
 bpf_trace_run1+0x2ca/0x520 kernel/trace/bpf_trace.c:2391
 trace_rcu_utilization+0x1b4/0x1e0 include/trace/events/rcu.h:27
 rcu_core+0x1161/0x17a0 kernel/rcu/tree.c:2831
 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738
RIP: 0010:rcu_read_unlock_special+0x88/0x570 kernel/rcu/tree_plugin.h:693
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 14 66 41 c7 44 14 09 f3 f3 41 c6 44 14 0b f3 65 44 8b 3d 19 7b 87 7e 41 f7 c7 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 22 00 00 00 00 66 42 c7 44 22
RSP: 0018:ffffc90003387c20 EFLAGS: 00000206
RAX: 29148554a3e04700 RBX: 1ffff92000670f8c RCX: ffffffff81718eba
RDX: dffffc0000000000 RSI: ffffffff8c0ad8a0 RDI: ffffffff8c6154a0
RBP: ffffc90003387cf8 R08: ffffffff9431f8c7 R09: 1ffffffff2863f18
R10: dffffc0000000000 R11: fffffbfff2863f19 R12: 1ffff92000670f88
R13: ffff88802e1a2260 R14: ffffc90003387c60 R15: 0000000000000000
 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437
 dput+0x197/0x2b0 fs/dcache.c:866
 __fput+0x5ba/0xa50 fs/file_table.c:458
 task_work_run+0x24f/0x310 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4251b80809
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff8bec3858 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000005b1ed RCX: 00007f4251b80809
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4251d47ba0 R08: 0000000000000001 R09: 00007fff8bec3b3f
R10: 00007f4251a00000 R11: 0000000000000246 R12: 000000000005b275
R13: 00007f4251d45fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>