rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5369/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=13233, q=881 ncpus=2)
task:syz-executor.0  state:R  running task     stack:25680 pid:5369  tgid:5368  ppid:5109   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7067
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:781 [inline]
RIP: 0010:mod_memcg_page_state.part.0.constprop.0+0x22/0x690 include/linux/memcontrol.h:1014
Code: 90 90 90 90 90 90 90 90 41 56 41 55 41 54 41 89 f4 55 53 48 89 fb e8 0d a0 b2 ff e8 08 dd 98 ff 45 31 c9 45 31 c0 31 d2 31 f6 <b9> 02 00 00 00 48 c7 c7 60 17 bb 8d 48 8d 05 00 00 00 00 50 e8 15
RSP: 0018:ffffc90003bef9d0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffea000103a480 RCX: ffffc90003701000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88802625c044
RBP: 0000000000000092 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000092 R11: 0000000000000000 R12: 00000000ffffffff
R13: dffffc0000000000 R14: ffffed1005ed10c4 R15: ffff88802f68862c
 mod_memcg_page_state include/linux/memcontrol.h:580 [inline]
 vfree+0x16f/0x7a0 mm/vmalloc.c:3335
 kvfree+0x33/0x50 mm/util.c:678
 __htab_map_lookup_and_delete_batch+0x140c/0x2270 kernel/bpf/hashtab.c:1911
 bpf_map_do_batch+0x52f/0x720 kernel/bpf/syscall.c:5198
 __sys_bpf+0x46ff/0x4b70 kernel/bpf/syscall.c:5747
 __do_sys_bpf kernel/bpf/syscall.c:5794 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5792 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5792
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fea59c7cee9
RSP: 002b:00007fea5a9500c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fea59dabf80 RCX: 00007fea59c7cee9
RDX: 0000000000000038 RSI: 0000000020000080 RDI: 0000000000000019
RBP: 00007fea59cc949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fea59dabf80 R15: 00007ffdfa20d7b8
 </TASK>
rcu: rcu_preempt kthread starved for 10497 jiffies! g13233 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:27296 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2202
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5375 Comm: syz-executor.1 Not tainted 6.9.0-syzkaller-08995-g0450d2083be6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:rcu_note_context_switch+0x0/0x1ae0 kernel/rcu/tree_plugin.h:313
Code: 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa e9 07 e5 ff ff 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 41 55 41 54 55 89 fd 53 48 c7 c3 40 f9 03
RSP: 0018:ffffc9000336f940 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffffffff8ae95bf7 RCX: ffffffff81953a96
RDX: 0000000000000000 RSI: ffffffff8b8f9280 RDI: 0000000000000000
RBP: ffffc9000336fad8 R08: 0000000000000000 R09: fffffbfff1fc7ef2
R10: ffffffff8fe3f797 R11: 0000000000000000 R12: ffff8880215b3c2c
R13: ffff8880215b3c00 R14: ffffffff818158e1 R15: ffff8880b923ea40
FS:  00007f6e6b1de6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c7d578114 CR3: 0000000069c86000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __schedule+0x293/0x5d00 kernel/sched/core.c:6634
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e6b67cee9
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:00007f6e6b1de178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f6e6b7ac058 RCX: 00007f6e6b67cee9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f6e6b7ac058
RBP: 00007f6e6b7ac050 R08: 00007f6e6b1de6c0 R09: 00007f6e6b1de6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6e6b7ac05c
R13: 0000000000000004 R14: 00007ffd6f105900 R15: 00007ffd6f1059e8
 </TASK>