rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=242c/1/0x4000000000000000 softirq=60709/60709 fqs=0
	(detected by 0, t=10502 jiffies, g=78237, q=228 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4255 Comm: syz-executor Not tainted 6.1.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4728 [inline]
RIP: 0010:__lock_acquire+0x5ec/0x1f80 kernel/locking/lockdep.c:4999
Code: 8b 44 24 20 49 8d 84 c5 e0 0a 00 00 48 89 44 24 20 40 84 ed 0f 84 f9 03 00 00 0f b6 1b 41 0f b6 04 17 84 c0 0f 85 21 12 00 00 <41> f6 46 01 80 0f 85 de 03 00 00 84 db 40 0f b6 c5 0f b6 cb 0f 44
RSP: 0018:ffffc900001e0a80 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816aad6a
RDX: dffffc0000000000 RSI: ffff8880196f6420 RDI: ffffffff91250268
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff224a04e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880196f6418
R13: ffff8880196f5940 R14: ffff8880196f6508 R15: 1ffff110032deca1
FS:  000055555ce7a500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000240 CR3: 000000005cf2e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1693 [inline]
 __hrtimer_run_queues+0x6d3/0xe50 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:check_kcov_mode kernel/kcov.c:193 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x30/0x80 kernel/kcov.c:320
Code: 8b 0d b4 ce 77 7e 65 8b 05 b5 ce 77 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 1c 16 00 00 00 74 4e 8b 81 f8 15 00 00 <83> f8 03 75 43 48 8b 91 00 16 00 00 44 8b 89 fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003d874b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88805cf36058 RCX: ffff8880196f5940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003d87870 R08: ffffffff81cc06d4 R09: fffffbfff1d364e6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880250fba20
R13: 0000000000000000 R14: 800000005da06007 R15: ffff88805cf36058
 copy_pte_range mm/memory.c:1069 [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+0x1404/0x4660 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+0x19d5/0x4060 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: 0033:0x7f1fb9f83613
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:00007ffd5a205528 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1fb9f83613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055555ce7a7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000100980 R15: 00007ffd5a2056c0
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g78237 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=43481
rcu: rcu_preempt kthread starved for 10502 jiffies! g78237 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27256 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4255 Comm: syz-executor Not tainted 6.1.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5401 [inline]
RIP: 0010:lock_is_held_type+0x93/0x180 kernel/locking/lockdep.c:5705
Code: fa 48 c7 c7 20 10 0c 8b e8 9a 16 00 00 65 ff 05 43 a0 4f 75 41 83 bd d8 0a 00 00 00 7e 47 4c 89 ed 48 81 c5 e0 0a 00 00 31 db <48> 83 fb 31 73 24 48 89 ef 4c 89 fe e8 1c 02 00 00 85 c0 75 2a 48
RSP: 0018:ffffc900001e0d18 EFLAGS: 00000093
RAX: 0000000000000006 RBX: 0000000000000003 RCX: ffff8880196f5940
RDX: ffff8880196f5940 RSI: ffff8880b8f2a4d8 RDI: ffff8880196f6470
RBP: ffff8880196f6498 R08: ffffffff8179c891 R09: ffff88805621e340
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000046
R13: ffff8880196f5940 R14: 00000000ffffffff R15: ffff8880b8f2a4d8
FS:  000055555ce7a500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000240 CR3: 000000005cf2e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_is_held include/linux/lockdep.h:283 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1655 [inline]
 __hrtimer_run_queues+0x307/0xe50 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:check_kcov_mode kernel/kcov.c:193 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x30/0x80 kernel/kcov.c:320
Code: 8b 0d b4 ce 77 7e 65 8b 05 b5 ce 77 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 1c 16 00 00 00 74 4e 8b 81 f8 15 00 00 <83> f8 03 75 43 48 8b 91 00 16 00 00 44 8b 89 fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003d874b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88805cf36058 RCX: ffff8880196f5940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003d87870 R08: ffffffff81cc06d4 R09: fffffbfff1d364e6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880250fba20
R13: 0000000000000000 R14: 800000005da06007 R15: ffff88805cf36058
 copy_pte_range mm/memory.c:1069 [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+0x1404/0x4660 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+0x19d5/0x4060 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: 0033:0x7f1fb9f83613
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:00007ffd5a205528 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1fb9f83613
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 000055555ce7a7d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000100980 R15: 00007ffd5a2056c0
 </TASK>