rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 ticks this GP) idle=b4d4/1/0x4000000000000000 softirq=19499/19499 fqs=0
rcu: 	(detected by 0, t=10503 jiffies, g=13049, q=1119 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6199 Comm: rm Not tainted 6.15.0-syzkaller-g0ff41df1cb26 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rcu_lock_release include/linux/rcupdate.h:341 [inline]
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:871 [inline]
RIP: 0010:advance_sched+0xb1b/0xc90 net/sched/sch_taprio.c:987
Code: fb cf 47 f8 c6 05 7c f8 f0 05 01 48 c7 c7 20 7f 74 8c be 66 03 00 00 48 c7 c2 c0 7f 74 8c e8 6c 48 26 f8 48 c7 c7 e0 de f3 8d <48> 89 de e8 4d 2e 26 f8 e8 38 ac 2f f8 b8 01 00 00 00 48 81 c4 98
RSP: 0018:ffffc90000a08c70 EFLAGS: 00000006
RAX: ffffffff8978219c RBX: ffffffff897820d8 RCX: ffff88802a6b9e00
RDX: 0000000000010000 RSI: ffffffff8bc1f5e0 RDI: ffffffff8df3dee0
RBP: 0000000000000001 R08: ffff88806b1cf15f R09: 1ffff1100d639e2b
R10: dffffc0000000000 R11: ffffed100d639e2c R12: ffff88806b1cf360
R13: ffff88806b1cf000 R14: 1843017ad2ff1e58 R15: ffff888034f6ec00
FS:  0000000000000000(0000) GS:ffff8881261c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3832fe2b4c CR3: 00000000315b0000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x52c/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:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:842 [inline]
RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
RIP: 0010:unwind_next_frame+0xc6/0x2390 arch/x86/kernel/unwind_orc.c:479
Code: 36 00 4c 8d 3d 00 00 00 00 48 c7 c7 e0 de f3 8d 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 57 e8 fe 74 2c 00 48 83 c4 08 <e8> 25 d4 e4 09 85 c0 74 3a e8 2c 4f 35 00 84 c0 75 31 e8 13 d4 e4
RSP: 0018:ffffc90003516898 EFLAGS: 00000282
RAX: 6090ee37ee22d900 RBX: ffffffff8221b6ce RCX: 6090ee37ee22d900
RDX: 0000000000000000 RSI: ffffffff8d9390bc RDI: ffffffff8bc1f600
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8171ca05 R12: 1ffff920006a2d2d
R13: ffffc900035169a0 R14: ffffc90003516968 R15: ffffffff8171ca05
 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
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4147 [inline]
 slab_alloc_node mm/slub.c:4196 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4203
 kmem_alloc_batch lib/debugobjects.c:371 [inline]
 fill_pool+0x100/0x570 lib/debugobjects.c:403
 debug_objects_fill_pool lib/debugobjects.c:725 [inline]
 debug_object_activate+0x383/0x420 lib/debugobjects.c:814
 debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline]
 __call_rcu_common kernel/rcu/tree.c:3067 [inline]
 call_rcu+0x95/0x990 kernel/rcu/tree.c:3202
 mas_wr_node_store lib/maple_tree.c:3863 [inline]
 mas_wr_store_entry+0x1eaf/0x2550 lib/maple_tree.c:4083
 mas_store_gfp+0x1cf/0x4f0 lib/maple_tree.c:5444
 vma_iter_store_gfp mm/vma.h:210 [inline]
 do_brk_flags+0x760/0xbd0 mm/vma.c:2668
 vm_brk_flags+0x4b5/0x6f0 mm/mmap.c:1242
 elf_load+0x5be/0x6c0 fs/binfmt_elf.c:446
 load_elf_interp+0x469/0xaf0 fs/binfmt_elf.c:681
 load_elf_binary+0x19d2/0x27a0 fs/binfmt_elf.c:1246
 search_binary_handler fs/exec.c:1778 [inline]
 exec_binprm fs/exec.c:1810 [inline]
 bprm_execve+0x99c/0x1440 fs/exec.c:1862
 do_execveat_common+0x510/0x6a0 fs/exec.c:1968
 do_execve fs/exec.c:2042 [inline]
 __do_sys_execve fs/exec.c:2118 [inline]
 __se_sys_execve fs/exec.c:2113 [inline]
 __x64_sys_execve+0x94/0xb0 fs/exec.c:2113
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26f41c6107
Code: Unable to access opcode bytes at 0x7f26f41c60dd.
RSP: 002b:00007ffe9e342558 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 0000555b6fce30c8 RCX: 00007f26f41c6107
RDX: 0000555b6fce30e8 RSI: 0000555b6fce30c8 RDI: 0000555b6fce3170
RBP: 0000555b6fce3170 R08: 00007ffe9e345e95 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000555b6fce30e8
R13: 00007f26f438be8b R14: 0000555b6fce30e8 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10502 jiffies! g13049 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=4052
rcu: rcu_preempt kthread starved for 10503 jiffies! g13049 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:27304 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x16e2/0x4cd0 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6860
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2046
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2248
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4e/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>