rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (2 ticks this GP) idle=e92c/1/0x4000000000000000 softirq=19418/19418 fqs=0
rcu: 	(detected by 1, t=10505 jiffies, g=13861, q=1109 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6129 Comm: syz-executor Not tainted 6.15.0-next-20250604-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:debug_object_deactivate+0x9a/0x250 lib/debugobjects.c:-1
Code: 61 48 0f af c8 48 c1 e9 2f 83 e1 f8 4c 8d 3c c9 49 81 c7 60 0b c5 99 48 8d 1c c9 48 81 c3 68 0b c5 99 48 89 df e8 26 02 a1 06 <48> 89 04 24 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 2d
RSP: 0018:ffffc90000007ca8 EFLAGS: 00000046
RAX: 0000000000000802 RBX: ffffffff99d14690 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007b80
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f70 R12: ffff888033d4b340
R13: dffffc0000000000 R14: 1845f2b750979000 R15: ffffffff99d14688
FS:  0000000000000000(0000) GS:ffff888125c4d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7e9e414f98 CR3: 000000007e012000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 debug_hrtimer_deactivate kernel/time/hrtimer.c:450 [inline]
 debug_deactivate+0x1d/0x200 kernel/time/hrtimer.c:490
 __run_hrtimer kernel/time/hrtimer.c:1729 [inline]
 __hrtimer_run_queues+0x2b0/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:-1 [inline]
RIP: 0010:unwind_next_frame+0xc3f/0x2390 arch/x86/kernel/unwind_orc.c:585
Code: 85 f9 0c 00 00 48 8d 43 08 4c 39 f8 0f 97 c1 4c 39 e0 0f 96 c0 20 c8 3c 01 0f 85 df 0c 00 00 48 89 df e8 84 23 00 00 48 89 c3 <48> bd 00 00 00 00 00 fc ff df 48 8b 44 24 30 80 3c 28 00 4c 8b 7c
RSP: 0018:ffffc9000466f0d8 EFLAGS: 00000202
RAX: ffffffff8214c858 RBX: ffffffff8214c858 RCX: 1ffff920008cde01
RDX: ffffffff903c7690 RSI: 0000000000000002 RDI: ffffc9000466f698
RBP: 1ffff920008cde36 R08: 0000000000000008 R09: ffffffff81729de5
R10: ffffc9000466f1f8 R11: ffffffff81acf940 R12: ffffc90004670000
R13: 1ffff920008cde37 R14: ffffc9000466f1a8 R15: ffffc90004668000
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359
 kmalloc_noprof include/linux/slab.h:905 [inline]
 slab_free_hook mm/slub.c:2333 [inline]
 slab_free mm/slub.c:4643 [inline]
 kmem_cache_free+0x166/0x400 mm/slub.c:4745
 remove_vma mm/vma.c:465 [inline]
 vms_complete_munmap_vmas+0x626/0x8a0 mm/vma.c:1302
 do_vmi_align_munmap+0x358/0x420 mm/vma.c:1545
 do_vmi_munmap+0x253/0x2e0 mm/vma.c:1593
 __vm_munmap+0x23b/0x3d0 mm/vma.c:3122
 elf_map fs/binfmt_elf.c:382 [inline]
 elf_load+0x2c3/0x6c0 fs/binfmt_elf.c:407
 load_elf_binary+0xec6/0x2790 fs/binfmt_elf.c:1147
 search_binary_handler fs/exec.c:1665 [inline]
 exec_binprm fs/exec.c:1697 [inline]
 bprm_execve+0x999/0x1450 fs/exec.c:1749
 do_execveat_common+0x510/0x6a0 fs/exec.c:1855
 do_execve fs/exec.c:1929 [inline]
 __do_sys_execve fs/exec.c:2005 [inline]
 __se_sys_execve fs/exec.c:2000 [inline]
 __x64_sys_execve+0x94/0xb0 fs/exec.c:2000
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f239bfc1ff7
Code: Unable to access opcode bytes at 0x7f239bfc1fcd.
RSP: 002b:00007f239cd0fdf8 EFLAGS: 00000202 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007ffff98ddef7 RCX: 00007f239bfc1ff7
RDX: 00007ffff98db890 RSI: 00007ffff98dbad0 RDI: 00007ffff98ddef7
RBP: 00007f239cd0fe70 R08: 00007f239cd0ff20 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000202 R12: 00007ffff98dbad0
R13: 00007ffff98db890 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10504 jiffies! g13861 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=16668
rcu: rcu_preempt kthread starved for 10505 jiffies! g13861 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:27320 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16f5/0x4d00 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6878
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>