rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=ad24/1/0x4000000000000000 softirq=72471/72471 fqs=17
rcu: 	(detected by 1, t=10503 jiffies, g=109809, q=480 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15965 Comm: syz-executor.4 Not tainted 6.9.0-rc7-next-20240510-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:advance_sched+0x9ee/0xca0 net/sched/sch_taprio.c:983
Code: 74 05 e8 55 71 68 f8 48 8b 44 24 10 49 89 47 18 49 83 c7 20 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 32 71 68 f8 <48> 8b 44 24 10 49 89 07 e8 15 d0 e9 f7 48 8d 1d 00 00 00 00 48 c7
RSP: 0018:ffffc90000007c90 EFLAGS: 00000046
RAX: 1ffff1100c39da6c RBX: ffff888061ced2c0 RCX: 0000000000010002
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888061ced358
RBP: ffff88802a5a20c8 R08: ffff888061ced2eb R09: 1ffff1100c39da5d
R10: dffffc0000000000 R11: ffffed100c39da5e R12: dffffc0000000000
R13: ffff88802a5a2008 R14: ffff88802a5a2000 R15: ffff888061ced360
FS:  00007fe887fde6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe887fddf78 CR3: 0000000036e12000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x1932/0x2a00
Code: 89 f7 e8 a1 dd ba 00 49 89 1e 42 0f b6 44 2d 00 84 c0 0f 85 61 0e 00 00 48 8b 44 24 20 c6 00 00 4c 8b 74 24 48 48 8b 6c 24 28 <48> 8b 44 24 38 42 0f b6 04 28 84 c0 0f 85 ea 0b 00 00 48 8b 44 24
RSP: 0018:ffffc9000340efe8 EFLAGS: 00000246
RAX: ffffc9000340f110 RBX: ffffc9000340f0f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000340f120
RBP: ffffffff904086d0 R08: ffffc9000340f11f R09: 0000000000000000
R10: ffffc9000340f110 R11: fffff52000681e24 R12: ffffc9000340f608
R13: dffffc0000000000 R14: ffffc9000340f110 R15: 1ffff92000681e18
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3940 [inline]
 slab_alloc_node mm/slub.c:4000 [inline]
 kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4019
 proc_alloc_inode+0x2a/0xc0 fs/proc/inode.c:57
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x69/0x1e0 fs/inode.c:1007
 new_inode+0x22/0x1d0 fs/inode.c:1033
 proc_pid_make_inode+0x1f/0x130 fs/proc/base.c:1892
 proc_pid_make_base_inode fs/proc/base.c:1943 [inline]
 proc_task_instantiate+0x54/0x2c0 fs/proc/base.c:3732
 proc_task_lookup+0x3aa/0x570 fs/proc/base.c:3776
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1692
 lookup_slow+0x53/0x70 fs/namei.c:1709
 walk_component+0x2e1/0x410 fs/namei.c:2004
 link_path_walk+0x728/0xea0 fs/namei.c:2328
 path_openat+0x24a/0x3280 fs/namei.c:3803
 do_filp_open+0x235/0x490 fs/namei.c:3834
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405
 do_sys_open fs/open.c:1420 [inline]
 __do_sys_openat fs/open.c:1436 [inline]
 __se_sys_openat fs/open.c:1431 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1431
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe88847c960
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 09 82 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 5c 82 02 00 8b 44
RSP: 002b:00007fe887fddfa0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fe88847c960
RDX: 0000000000000002 RSI: 00007fe887fde030 RDI: 00000000ffffff9c
RBP: 00007fe887fde030 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe8885ac120 R15: 00007ffd8e41cb48
 </TASK>
rcu: rcu_preempt kthread starved for 10415 jiffies! g109809 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:26320 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 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:
CPU: 1 PID: 15971 Comm: syz-executor.0 Not tainted 6.9.0-rc7-next-20240510-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1894/0x2a00 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 f5 f2 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 a0 ee 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 84 ee
RSP: 0018:ffffc90004dd7960 EFLAGS: 00000246
RAX: ffffffff818a2dfc RBX: 1ffff11017288c11 RCX: 0000000000040000
RDX: ffffc9000df32000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90004dd7b60 R08: ffffffff818a2dcb R09: 1ffffffff25f64b0
R10: dffffc0000000000 R11: fffffbfff25f64b1 R12: dffffc0000000000
R13: ffff8880b9446088 R14: ffff8880b953f900 R15: 0000000000000000
FS:  00007f49cbd7e6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49cbd7ed58 CR3: 000000007f5fa000 CR4: 00000000003526f0
DR0: 0000000000002800 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2069 [inline]
 text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2279
 text_poke_flush arch/x86/kernel/alternative.c:2470 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2477
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_slow_inc_cpuslocked+0xb3/0x150 kernel/jump_label.c:165
 static_key_slow_inc+0x1a/0x30 kernel/jump_label.c:186
 bpf_enable_runtime_stats kernel/bpf/syscall.c:5518 [inline]
 bpf_enable_stats+0xfe/0x140 kernel/bpf/syscall.c:5537
 __sys_bpf+0x75b/0x810 kernel/bpf/syscall.c:5770
 __do_sys_bpf kernel/bpf/syscall.c:5794 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5792 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5792
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f49cb07dd69
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:00007f49cbd7e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f49cb1ac050 RCX: 00007f49cb07dd69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00007f49cb0ca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f49cb1ac050 R15: 00007fffb4f3d228
 </TASK>