rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=79dc/1/0x4000000000000000 softirq=15921/15921 fqs=0
	(detected by 1, t=10502 jiffies, g=18921, q=55 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4262 Comm: syz-executor Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__hrtimer_run_queues+0x740/0xe50 kernel/time/hrtimer.c:1753
Code: e6 d6 10 00 48 8b 3c 24 4c 89 ee 31 d2 e8 a8 2a 00 00 eb 11 e8 d1 d6 10 00 4c 8b 6c 24 38 eb 0a e8 c5 d6 10 00 48 8b 5c 24 18 <48> 8b 74 24 50 42 0f b6 04 3e 84 c0 48 8b 54 24 08 0f 85 a4 01 00
RSP: 0018:ffffc90000007d60 EFLAGS: 00000086
RAX: 0000000000000001 RBX: ffff8880b8e2a708 RCX: dffffc0000000000
RDX: 0000000000000018 RSI: ffff8880b8e2a710 RDI: ffff888024c2e340
RBP: ffffc90000007ea8 R08: dffffc0000000000 R09: ffff888024c2e340
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b8e2a4c0
R13: ffff8880b8e2a6c0 R14: ffff8880b8e2a4c0 R15: dffffc0000000000
FS:  0000555555b8e500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9621ed56c0 CR3: 000000005d1d6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215
Code: 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d f8 fb 15 0d 48 89 de 5b e9 b7 7f 56 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 44 dc 77 7e 65 8b 15 45 dc 77 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90003f17470 EFLAGS: 00000246
RAX: ffffffff81ecbca0 RBX: 0000000000000000 RCX: ffff88807e411dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffffd40003498f1 R08: ffffffff81ecbc85 R09: fffffbfff225684d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001a4c788
R13: 0000000000000001 R14: ffff88801c456070 R15: ffffea0001a4c780
 arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
 page_fixed_fake_head include/linux/page-flags.h:216 [inline]
 _compound_head include/linux/page-flags.h:257 [inline]
 PageSlab include/linux/page-flags.h:487 [inline]
 page_table_check_set+0xb0/0x6d0 mm/page_table_check.c:117
 page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
 set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
 copy_present_pte mm/memory.c:1000 [inline]
 copy_pte_range mm/memory.c:1091 [inline]
 copy_pmd_range mm/memory.c:1177 [inline]
 copy_pud_range mm/memory.c:1214 [inline]
 copy_p4d_range mm/memory.c:1238 [inline]
 copy_page_range+0x2d50/0x4660 mm/memory.c:1336
 dup_mmap kernel/fork.c:697 [inline]
 dup_mm kernel/fork.c:1541 [inline]
 copy_mm+0xf42/0x1990 kernel/fork.c:1590
 copy_process+0x19fb/0x40a0 kernel/fork.c:2266
 kernel_clone+0x222/0x920 kernel/fork.c:2681
 __do_sys_clone kernel/fork.c:2822 [inline]
 __se_sys_clone kernel/fork.c:2806 [inline]
 __x64_sys_clone+0x231/0x280 kernel/fork.c:2806
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9621183653
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd1df9ccd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9621183653
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555555b8e7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000002761a R15: 00007ffd1df9ce70
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g18921 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=7252
rcu: rcu_preempt kthread starved for 10502 jiffies! g18921 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:25880 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </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: 4262 Comm: syz-executor Not tainted 6.1.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:check_preemption_disabled+0x2/0x110 lib/smp_processor_id.c:13
Code: 3c 8d 48 89 de e8 7e fa bd f9 e9 6d ff ff ff cc cc cc cc cc cc cc cc cc 48 c7 c7 a0 6c 5f 8b 48 c7 c6 e0 6c 5f 8b eb 00 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc90000007b50 EFLAGS: 00000007
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816ac6b7
RDX: 0000000000000000 RSI: ffffffff8b5f6ce0 RDI: ffffffff8b5f6ca0
RBP: ffffc90000007cb0 R08: dffffc0000000000 R09: fffffbfff1d41196
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000f7c
R13: ffffffff88d954e0 R14: dffffc0000000000 R15: dffffc0000000000
FS:  0000555555b8e500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9621ed56c0 CR3: 000000005d1d6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
 rcu_is_watching+0x11/0xb0 kernel/rcu/tree.c:721
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xd6/0xa20 kernel/locking/lockdep.c:5673
 rcu_lock_release include/linux/rcupdate.h:355 [inline]
 rcu_read_unlock include/linux/rcupdate.h:824 [inline]
 advance_sched+0x800/0x970 net/sched/sch_taprio.c:755
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215
Code: 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d f8 fb 15 0d 48 89 de 5b e9 b7 7f 56 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 44 dc 77 7e 65 8b 15 45 dc 77 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90003f17470 EFLAGS: 00000246
RAX: ffffffff81ecbca0 RBX: 0000000000000000 RCX: ffff88807e411dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffffd40003498f1 R08: ffffffff81ecbc85 R09: fffffbfff225684d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001a4c788
R13: 0000000000000001 R14: ffff88801c456070 R15: ffffea0001a4c780
 arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
 page_fixed_fake_head include/linux/page-flags.h:216 [inline]
 _compound_head include/linux/page-flags.h:257 [inline]
 PageSlab include/linux/page-flags.h:487 [inline]
 page_table_check_set+0xb0/0x6d0 mm/page_table_check.c:117
 page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
 set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
 copy_present_pte mm/memory.c:1000 [inline]
 copy_pte_range mm/memory.c:1091 [inline]
 copy_pmd_range mm/memory.c:1177 [inline]
 copy_pud_range mm/memory.c:1214 [inline]
 copy_p4d_range mm/memory.c:1238 [inline]
 copy_page_range+0x2d50/0x4660 mm/memory.c:1336
 dup_mmap kernel/fork.c:697 [inline]
 dup_mm kernel/fork.c:1541 [inline]
 copy_mm+0xf42/0x1990 kernel/fork.c:1590
 copy_process+0x19fb/0x40a0 kernel/fork.c:2266
 kernel_clone+0x222/0x920 kernel/fork.c:2681
 __do_sys_clone kernel/fork.c:2822 [inline]
 __se_sys_clone kernel/fork.c:2806 [inline]
 __x64_sys_clone+0x231/0x280 kernel/fork.c:2806
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9621183653
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd1df9ccd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9621183653
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555555b8e7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000002761a R15: 00007ffd1df9ce70
 </TASK>