rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=19d4/1/0x4000000000000000 softirq=73830/73831 fqs=0
rcu: 	(detected by 0, t=10506 jiffies, g=125913, q=46 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20461 Comm: syz-executor.2 Not tainted 6.4.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__lock_acquire+0x972/0x5f30 kernel/locking/lockdep.c:5061
Code: 45 85 c9 0f 84 ce 05 00 00 48 8d 85 b8 0a 00 00 48 89 c2 48 89 44 24 68 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 18 3f 00 00 44 8b 44 24 18 48 8b 9d b8 0a 00 00 45 85 c0 0f
RSP: 0018:ffffc900003e8b28 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff88802ddaacb0 RCX: ffffffff8164ad9d
RDX: 1ffff11005bb558f RSI: 0000000000000008 RDI: ffffffff9151fd00
RBP: ffff88802ddaa1c0 R08: 0000000000000000 R09: ffffffff9151fd07
R10: fffffbfff22a3fa0 R11: ffffc900003e8ff8 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000020 R15: ffff88802ddaacd8
FS:  000055555710e400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f32675abf84 CR3: 000000002f455000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5705 [inline]
 lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
 rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
 rcu_read_lock include/linux/rcupdate.h:773 [inline]
 advance_sched+0x6e4/0xd20 net/sched/sch_taprio.c:993
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x5fa/0xbe0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x320/0x7b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_is_held_type+0x103/0x140 kernel/locking/lockdep.c:5781
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 78 fc f2 75 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 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 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc9000364f648 EFLAGS: 00000286
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88802dd1e4a8 R08: 0000000000000005 R09: 0000000000000300
R10: 0000000000000300 R11: 0000000000000001 R12: ffff88802ddaa1c0
R13: 0000000000000001 R14: 00000000ffffffff R15: ffff88802ddaac88
 lock_is_held include/linux/lockdep.h:288 [inline]
 mt_locked lib/maple_tree.c:817 [inline]
 mt_locked lib/maple_tree.c:815 [inline]
 mt_slot lib/maple_tree.c:824 [inline]
 mas_slot lib/maple_tree.c:857 [inline]
 mt_validate_nulls+0x9d9/0xd10 lib/maple_tree.c:7159
 mt_validate+0x1cd7/0x41f0 lib/maple_tree.c:7215
 validate_mm_mt+0xa1/0x3f0 mm/mmap.c:314
 validate_mm+0xa0/0x290 mm/mmap.c:351
 vma_merge+0xda/0x2070 mm/mmap.c:926
 mprotect_fixup+0x353/0xbd0 mm/mprotect.c:674
 do_mprotect_pkey+0x87f/0xd50 mm/mprotect.c:860
 __do_sys_mprotect mm/mprotect.c:881 [inline]
 __se_sys_mprotect mm/mprotect.c:878 [inline]
 __x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:878
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f326748c497
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe8a29d758 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 0000000000021000 RCX: 00007f326748c497
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f32680e7000
RBP: 00007ffe8a29d830 R08: 00000000ffffffff R09: 00007f3268106700
R10: 0000000000020022 R11: 0000000000000206 R12: 00007ffe8a29d950
R13: 00007f3268106700 R14: 0000000000000000 R15: 0000000000022000
 </TASK>
rcu: rcu_preempt kthread starved for 10506 jiffies! g125913 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:28224 pid:15    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_timeout+0x14e/0x2b0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1808
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 10884 Comm: kworker/0:16 Not tainted 6.4.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events bpf_prog_free_deferred
RIP: 0010:csd_lock_wait kernel/smp.c:285 [inline]
RIP: 0010:smp_call_function_many_cond+0x691/0x15a0 kernel/smp.c:828
Code: c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 33 40 0b 00 f3 90 41 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 ad 0c 00 00 <8b> 43 08 31 ff 83 e0 01 41 89 c7 89 c6 e8 2d 3c 0b 00 45 85 ff 75
RSP: 0018:ffffc9000c6a7948 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880b9941a60 RCX: 0000000000000000
RDX: ffff88807b124040 RSI: ffffffff8178277d RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000094001 R12: ffffed101732834d
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc1a3b73110 CR3: 000000003a1cc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:996
 __purge_vmap_area_lazy+0x207/0x1e60 mm/vmalloc.c:1750
 _vm_unmap_aliases.part.0+0x78/0x550 mm/vmalloc.c:2262
 _vm_unmap_aliases mm/vmalloc.c:2236 [inline]
 vm_reset_perms mm/vmalloc.c:2709 [inline]
 vfree+0x565/0x7e0 mm/vmalloc.c:2788
 bpf_prog_unlock_free include/linux/filter.h:891 [inline]
 bpf_jit_free include/linux/filter.h:1180 [inline]
 bpf_prog_free_deferred+0x544/0x730 kernel/bpf/core.c:2590
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>