rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=fa94/1/0x4000000000000000 softirq=124069/124070 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=196209, q=410 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18533 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-05204-g237bb5f7f7f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:lock_acquire+0xfb/0x530 kernel/locking/lockdep.c:5727
Code: 9c 86 00 48 0f a3 1d 2c 14 15 0e 73 0d e8 fd c6 09 00 84 c0 0f 84 c2 02 00 00 48 c7 c0 9c e1 86 8f 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 ea 02 00 00 83 3d 32 47 15 0e 00 0f 84 42 01 00 00 65
RSP: 0018:ffffc90000007a40 EFLAGS: 00000807
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81719a34
RDX: 0000000000000000 RSI: ffffffff8bfec640 RDI: ffffffff8bfec600
RBP: ffffc90000007b88 R08: ffffffff8f86ae6f R09: 1ffffffff1f0d5cd
R10: dffffc0000000000 R11: fffffbfff1f0d5ce R12: 1ffff92000000f50
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1234ed56c6 CR3: 000000002c7bc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:763
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x200 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1660 [inline]
 __hrtimer_run_queues+0x30f/0xd00 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x107/0x3a0 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:memory_is_nonzero mm/kasan/generic.c:103 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x64/0x290 mm/kasan/generic.c:189
Code: 48 c1 eb 03 49 ba 00 00 00 00 00 fc ff df 4e 8d 1c 13 49 ff c8 4d 89 c1 49 c1 e9 03 49 be 01 00 00 00 00 fc ff df 4f 8d 3c 31 <4c> 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c
RSP: 0018:ffffc9000a517348 EFLAGS: 00000a03
RAX: 0000000000000001 RBX: 1ffff11002e823ef RCX: ffffffff8203eb55
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888017411f7c
RBP: 000000000001ffff R08: ffff888017411f7f R09: 1ffff11002e823ef
R10: dffffc0000000000 R11: ffffed1002e823ef R12: ffff888017411f7c
R13: 0000000000000000 R14: dffffc0000000001 R15: ffffed1002e823f0
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 page_table_check_clear+0x2a5/0x730 mm/page_table_check.c:81
 zap_pte_range mm/memory.c:1452 [inline]
 zap_pmd_range mm/memory.c:1597 [inline]
 zap_pud_range mm/memory.c:1626 [inline]
 zap_p4d_range mm/memory.c:1647 [inline]
 unmap_page_range+0x1f7a/0x3610 mm/memory.c:1668
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1758
 exit_mmap+0x2c6/0xd40 mm/mmap.c:3287
 __mmput+0x115/0x3c0 kernel/fork.c:1345
 exit_mm+0x220/0x310 kernel/exit.c:569
 do_exit+0x99e/0x27e0 kernel/exit.c:865
 do_group_exit+0x207/0x2c0 kernel/exit.c:1027
 get_signal+0x176e/0x1850 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f318027dda9
Code: Unable to access opcode bytes at 0x7f318027dd7f.
RSP: 002b:00007f318102f178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f31803abf88 RCX: 00007f318027dda9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f31803abf88
RBP: 00007f31803abf80 R08: 00007f318102f6c0 R09: 00007f318102f6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f31803abf8c
R13: 000000000000000b R14: 00007ffc91839bb0 R15: 00007ffc91839c98
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g196209 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:24656 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2572
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
 kthread+0x2f0/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 18532 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-05204-g237bb5f7f7f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x5d/0x70 kernel/kcov.c:225
Code: f0 15 00 00 83 fa 02 75 21 48 8b 91 f8 15 00 00 48 8b 32 48 8d 7e 01 8b 89 f4 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90
RSP: 0018:ffffc90008cc7278 EFLAGS: 00000246
RAX: ffffffff81891f08 RBX: 1ffff11017288ba5 RCX: 0000000000040000
RDX: ffffc90004be9000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90008cc7480 R08: ffffffff81891ed7 R09: 1ffffffff2598ea0
R10: dffffc0000000000 R11: fffffbfff2598ea1 R12: dffffc0000000000
R13: ffff8880b9445d28 R14: ffff8880b953f280 R15: 0000000000000000
FS:  00007f762dc7f6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ad2000 CR3: 0000000081da8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 csd_lock_wait kernel/smp.c:311 [inline]
 smp_call_function_many_cond+0x1868/0x2960 kernel/smp.c:855
 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:2086 [inline]
 text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2296
 text_poke_bp+0xb0/0x100 arch/x86/kernel/alternative.c:2523
 __static_call_transform+0x51a/0x810 arch/x86/kernel/static_call.c:111
 arch_static_call_transform+0x141/0x380 arch/x86/kernel/static_call.c:163
 __static_call_update+0xd8/0x5e0 kernel/static_call_inline.c:147
 bpf_dispatcher_update kernel/bpf/dispatcher.c:126 [inline]
 bpf_dispatcher_change_prog+0xd7b/0xf10 kernel/bpf/dispatcher.c:167
 bpf_prog_test_run_xdp+0x9b3/0x11b0 net/bpf/test_run.c:1287
 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4240
 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5649
 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f762ce7dda9
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:00007f762dc7f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f762cfabf80 RCX: 00007f762ce7dda9
RDX: 0000000000000050 RSI: 0000000020000240 RDI: 000000000000000a
RBP: 00007f762ceca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f762cfabf80 R15: 00007ffec9ab5a48
 </TASK>