rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=7574/1/0x4000000000000000 softirq=15333/15334 fqs=37
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7387/1:b..l
rcu: 	(detected by 1, t=10506 jiffies, g=26029, q=959 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7378 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x60 kernel/kcov.c:207
Code: c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 04 db 76 7e <65> 8b 05 05 db 76 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74
RSP: 0018:ffffc90000007db8 EFLAGS: 00000082
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8ac37828
RDX: ffff88805c7b3c00 RSI: ffff8880b942cb10 RDI: ffff888021ba4340
RBP: ffff888021ba4340 R08: 0000000000000006 R09: ffff888021ba4340
R10: ffff888021ba4340 R11: ffffffff8b0f38c0 R12: ffff8880b942c9c0
R13: 0000000000000002 R14: 0000000000000001 R15: ffffffff88e73220
FS:  000055557b055480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0003c7000 CR3: 000000002434c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 timerqueue_add+0x1c2/0x330 lib/timerqueue.c:40
 enqueue_hrtimer+0x1c9/0x390 kernel/time/hrtimer.c:1098
 __run_hrtimer kernel/time/hrtimer.c:1709 [inline]
 __hrtimer_run_queues+0xa15/0xc20 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x410 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 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:lock_is_held_type+0x107/0x150 kernel/locking/lockdep.c:5830
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 2c 43 30 75 83 f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 ed eb
RSP: 0018:ffffc90004597cd0 EFLAGS: 00000292
RAX: 0000000000000046 RBX: 1ffff920008b2fa3 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b0cba40 RDI: ffffffff8b6e88a0
RBP: ffffffff8d7b0820 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805c7b3c00
R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000000
 lock_is_held include/linux/lockdep.h:231 [inline]
 __might_resched+0x4ca/0x5e0 kernel/sched/core.c:10149
 __might_fault+0x83/0x190 mm/memory.c:6077
 _copy_from_user+0x2b/0xf0 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:183 [inline]
 get_timespec64+0x8c/0x240 kernel/time/time.c:877
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1385 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1373 [inline]
 __x64_sys_clock_nanosleep+0x1ce/0x4a0 kernel/time/posix-timers.c:1373
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f797e2a91b5
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007ffc6f72e150 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00007f797e3abf80 RCX: 00007f797e2a91b5
RDX: 00007ffc6f72e190 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f797e3ad980 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000036436
R13: ffffffffffffffff R14: 00007f797de00000 R15: 00000000000360f5
 </TASK>
task:syz-executor.0  state:R  running task     stack:27152 pid:7387  tgid:7387  ppid:5075   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0xf15/0x5c70 kernel/sched/core.c:6736
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6915
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 zap_pte_range mm/memory.c:1549 [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+0x13e6/0x2af0 mm/memory.c:1668
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1714
 unmap_vmas+0x22f/0x490 mm/memory.c:1758
 exit_mmap+0x1c1/0xb60 mm/mmap.c:3287
 __mmput+0x12a/0x4d0 kernel/fork.c:1345
 mmput+0x62/0x70 kernel/fork.c:1367
 exit_mm kernel/exit.c:569 [inline]
 do_exit+0x999/0x2be0 kernel/exit.c:865
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
 __do_sys_exit_group kernel/exit.c:1038 [inline]
 __se_sys_exit_group kernel/exit.c:1036 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1036
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fa2f047dda9
RSP: 002b:00007ffc5f4ec2e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fa2f047dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 00000000000000ad R09: 0000000000000000
R10: 0000001b30a20000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
rcu: rcu_preempt kthread starved for 10320 jiffies! g26029 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:28048 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0xf15/0x5c70 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6828
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2572
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1862
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 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: 7424 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x4e7/0x1590 kernel/smp.c:855
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 4b 05 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 5d 0e 00 00 8b 43 08 31
RSP: 0018:ffffc900046df510 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffff8880b94464e0 RCX: ffffc90012c00000
RDX: 0000000000040000 RSI: ffffffff8180f365 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed1017288c9d
R13: 0000000000000001 R14: ffff8880b94464e8 R15: ffff8880b953f840
FS:  00007fd0326286c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0319ad988 CR3: 0000000066650000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1023
 __purge_vmap_area_lazy+0x205/0x2180 mm/vmalloc.c:1821
 _vm_unmap_aliases+0x693/0x9b0 mm/vmalloc.c:2378
 change_page_attr_set_clr+0x24c/0x490 arch/x86/mm/pat/set_memory.c:1842
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1890 [inline]
 set_memory_ro+0x7c/0xb0 arch/x86/mm/pat/set_memory.c:2076
 bpf_prog_lock_ro include/linux/filter.h:895 [inline]
 bpf_prog_select_runtime+0x4fb/0x640 kernel/bpf/core.c:2406
 bpf_prog_load+0xf0f/0x2660 kernel/bpf/syscall.c:2899
 __sys_bpf+0x9b4/0x4b40 kernel/bpf/syscall.c:5631
 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5736
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fd03187dda9
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:00007fd0326280c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fd0319abf80 RCX: 00007fd03187dda9
RDX: 0000000000000090 RSI: 00000000200012c0 RDI: 0000000000000005
RBP: 00007fd0318ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd0319abf80 R15: 00007ffcb63dc298
 </TASK>
vkms_vblank_simulate: vblank timer overrun