rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P14503/1:b..l..
rcu: 	(detected by 0, t=10502 jiffies, g=133949, q=281 ncpus=1)
task:sed             state:R  running task     stack:26888 pid:14503 tgid:14503 ppid:14502  task_flags:0x400000 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
 irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:878 [inline]
RIP: 0010:pte_unmap include/linux/pgtable.h:117 [inline]
RIP: 0010:zap_pte_range mm/memory.c:2058 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:2114 [inline]
RIP: 0010:zap_pud_range mm/memory.c:2142 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:2163 [inline]
RIP: 0010:__zap_vma_range+0x40fc/0x4f70 mm/memory.c:2203
Code: b6 01 48 8b bc 24 60 02 00 00 e8 bf fe db 09 e8 2a 3c d9 09 89 c3 31 ff 89 c6 e8 6f cb a4 ff 85 db 74 10 e8 36 2e 89 ff 84 c0 <74> 0e e8 5d c6 a4 ff eb 56 e8 56 c6 a4 ff eb 4f e8 ff 3b d9 09 89
RSP: 0018:ffffc90003a5f380 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8c8e6960 RDI: ffffffff8c8e6920
RBP: ffffc90003a5f670 R08: ffff888023f7d783 R09: 1ffff110047efaf0
R10: dffffc0000000000 R11: ffffed10047efaf1 R12: dffffc0000000000
R13: 00007f3d0b3ec000 R14: 0000000000000000 R15: 0000000000000000
 unmap_vmas+0x38b/0x550 mm/memory.c:2272
 exit_mmap+0x293/0x9f0 mm/mmap.c:1315
 __mmput+0x118/0x420 kernel/fork.c:1191
 exec_mm_put_old fs/exec.c:920 [inline]
 setup_new_exec+0x30d/0x360 fs/exec.c:1395
 load_elf_binary+0xbc0/0x28d0 fs/binfmt_elf.c:1024
 search_binary_handler fs/exec.c:1777 [inline]
 exec_binprm fs/exec.c:1809 [inline]
 bprm_execve+0x930/0x1590 fs/exec.c:1865
 do_execveat_common+0x99f/0xbd0 fs/exec.c:1963
 __do_sys_execve fs/exec.c:2036 [inline]
 __se_sys_execve fs/exec.c:2030 [inline]
 __x64_sys_execve+0x97/0xc0 fs/exec.c:2030
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3d0b2f1107
RSP: 002b:00007ffdf1599cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 000055da81ee7078 RCX: 00007f3d0b2f1107
RDX: 000055da81ee70a0 RSI: 000055da81ee7078 RDI: 000055da81ee7130
RBP: 000055da81ee7130 R08: 00007ffdf159ee41 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 000055da81ee70a0
R13: 00007f3d0b4b6e8b R14: 000055da81ee70a0 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 3324 jiffies! g133949 f0x0 RCU_GP_WAIT_FQS(5) ->state=I ->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:27496 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
 irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:srso_alias_return_thunk+0x0/0xfbef5 arch/x86/lib/retpoline.S:234
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8d 64 24 08 c3 cc <e8> f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 0018:ffffc90000157bd8 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff9bc7c501
RDX: 0000000000000001 RSI: ffffffff8e69aa2a RDI: 00000000ffffffff
RBP: ffffc90000157d30 R08: ffffffff919d2fbf R09: 1ffffffff233a5f7
R10: dffffc0000000000 R11: fffffbfff233a5f8 R12: ffffffff8ff60780
R13: 1ffff11003d55005 R14: ffffc90000157ca8 R15: 0000000000000000
 rcu_gp_fqs_loop+0x2d7/0x1230 kernel/rcu/tree.c:2122
 rcu_gp_kthread+0x9c/0x340 kernel/rcu/tree.c:2330
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 14491 Comm: syz.5.2959 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
RIP: 0010:copy_fpstate_to_sigframe+0x139/0xe10 arch/x86/kernel/fpu/signal.c:225
Code: df 4c 89 ee e8 c8 0f 5b 00 4c 39 eb 0f 82 3f 0c 00 00 4c 39 f3 0f 87 36 0c 00 00 0f 1f 44 00 00 e8 dc 0c 5b 00 4c 8b 74 24 18 <49> 8d 9e 00 02 00 00 48 c7 c7 69 26 6d 8e be b7 00 00 00 e8 3f 2a
RSP: 0018:ffffc900050c7900 EFLAGS: 00000246
RAX: ffffffff816de964 RBX: 00007efcd37d5044 RCX: 0000000000080000
RDX: ffffc90010441000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900050c7ad0 R08: ffff888052235dc7 R09: 1ffff1100a446bb8
R10: dffffc0000000000 R11: ffffed100a446bb9 R12: ffff888052235dc0
R13: 00007efcd37d4d00 R14: 00007efcd37d4d00 R15: dffffc0000000000
FS:  00007efcd37d56c0(0000) GS:ffff888123638000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d0b370340 CR3: 000000007098b000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 get_sigframe+0x603/0x830 arch/x86/kernel/signal.c:163
 x64_setup_rt_frame+0x163/0xc50 arch/x86/kernel/signal_64.c:175
 setup_rt_frame arch/x86/kernel/signal.c:250 [inline]
 handle_signal arch/x86/kernel/signal.c:294 [inline]
 arch_do_signal_or_restart+0x456/0x860 arch/x86/kernel/signal.c:339
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efcd559f557
Code: 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 <0f> 05 48 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89
RSP: 002b:00007efcd37d50e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007efcd5826098 RCX: 00007efcd559f559
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007efcd5826098
RBP: 00007efcd5826090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efcd5826128 R14: 00007ffd384e51b0 R15: 00007ffd384e5298
 </TASK>