rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6635/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=21861, q=660 ncpus=2)
task:sed             state:R  running task     stack:23680 pid:6635  tgid:6635  ppid:6634   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:mte_parent_slot lib/maple_tree.c:532 [inline]
RIP: 0010:mas_validate_parent_slot lib/maple_tree.c:7394 [inline]
RIP: 0010:mt_validate+0x71a/0x4aa0 lib/maple_tree.c:7592
Code: 22 f6 4c 89 f0 48 83 e0 01 0f 85 c6 00 00 00 4c 89 f6 48 83 e6 02 31 ff e8 53 94 22 f6 4c 89 f0 48 83 e0 02 0f 84 e9 34 00 00 <b9> 03 00 00 00 31 d2 48 85 c0 0f 95 c2 44 89 f0 25 fc 00 00 00 48
RSP: 0018:ffffc900046976a0 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffff88802efed400 RCX: ffff888061a08000
RDX: 0000000000000001 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90004697890 R08: ffffffff8b73969d R09: fffffbfff296fe68
R10: dffffc0000000000 R11: fffffbfff296fe68 R12: dffffc0000000000
R13: ffffc900046977f8 R14: ffff88802efed806 R15: 000000000000000a
 validate_mm+0xe7/0x530 mm/mmap.c:288
 __split_vma+0xaca/0xc30 mm/mmap.c:2440
 split_vma mm/mmap.c:2466 [inline]
 vma_modify+0x268/0x350 mm/mmap.c:2507
 vma_modify_flags include/linux/mm.h:3347 [inline]
 mprotect_fixup+0x3ea/0xa90 mm/mprotect.c:637
 do_mprotect_pkey+0x908/0xe00 mm/mprotect.c:820
 __do_sys_mprotect mm/mprotect.c:841 [inline]
 __se_sys_mprotect mm/mprotect.c:838 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:838
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12cc269bb7
RSP: 002b:00007ffc67296e38 EFLAGS: 00000246 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00000fff8ce52dc8 RCX: 00007f12cc269bb7
RDX: 0000000000000000 RSI: 000000000001c000 RDI: 00007f12cbfa2000
RBP: 00007ffc67297210 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000802 R11: 0000000000000246 R12: 00007f12cc246fc0
R13: 00007ffc67297298 R14: fffffffffffff000 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10535 jiffies! g21861 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:26448 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x1796/0x49d0 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </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: 6623 Comm: syz-executor.1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:__put_user_8+0x4/0x20 arch/x86/lib/putuser.S:105
Code: c9 0f 01 ca c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb 48 89 01 31 c9 0f 01 ca c3
RSP: 0018:ffffc90002dcfd98 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f39a40a46b0 RCX: 00007f39a4d58fe8
RDX: 0000000000000000 RSI: ffffffff8bcacd00 RDI: ffffffff8c1f2480
RBP: ffffc90002dcfec8 R08: ffffffff8fac246f R09: 1ffffffff1f5848d
R10: dffffc0000000000 R11: fffffbfff1f5848e R12: ffffc90002dcfe50
R13: ffffc90002dcffd8 R14: dffffc0000000000 R15: ffff888020b2ef58
FS:  00007f39a4d586c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3282d000 CR3: 000000002d07a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 clear_rseq_cs kernel/rseq.c:257 [inline]
 rseq_ip_fixup kernel/rseq.c:291 [inline]
 __rseq_handle_notify_resume+0x666/0x14e0 kernel/rseq.c:329
 rseq_handle_notify_resume include/linux/rseq.h:38 [inline]
 resume_user_mode_work include/linux/resume_user_mode.h:62 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x114/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f39a40a46b0
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 5a 9b 04 00 e8 25 78 fa ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007f39a4d57bb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f39a41b4128 RCX: 00007f39a407cf29
RDX: 00007f39a4d57bc0 RSI: 00007f39a4d57cf0 RDI: 0000000000000021
RBP: 00007f39a41b4120 R08: 00007f39a4d586c0 R09: 00007f39a4d586c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f39a41b412c
R13: 000000000000006e R14: 00007ffdeb107410 R15: 00007ffdeb1074f8
 </TASK>