rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=d75/1/0x4000000000000000 softirq=10335/10337 fqs=4593 
	(t=10500 jiffies g=10981 q=2684)
NMI backtrace for cpu 0
CPU: 0 PID: 5828 Comm: syz.3.448 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x22f/0x380 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x31d/0x5f0 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3936 [inline]
 rcu_sched_clock_irq+0x6ea/0x1120 kernel/rcu/tree.c:2619
 update_process_times+0x193/0x200 kernel/time/timer.c:2021
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4b4/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:sk_stop_timer+0x19/0x80 net/core/sock.c:3152
Code: 00 00 48 89 df 5b 41 5e 41 5f 5d e9 31 ec 07 fc 90 55 41 56 53 49 89 f6 48 89 fb e8 d1 32 9d f9 4c 89 f7 e8 c9 63 8c f9 89 c5 <31> ff 89 c6 e8 1e 36 9d f9 85 ed 74 39 4c 8d b3 80 00 00 00 4c 89
RSP: 0018:ffffc90000007a10 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffff88802a444800 RCX: ffff88802a13bb80
RDX: 0000000000000100 RSI: ffffffff8a2b2780 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: ffffffff901d418f R09: 1ffffffff203a831
R10: dffffc0000000000 R11: fffffbfff203a832 R12: dffffc0000000000
R13: ffff88802a444800 R14: ffff88802a444b08 R15: ffff88802a444800
 tcp_clear_xmit_timers include/net/tcp.h:631 [inline]
 tcp_done+0x1d5/0x320 net/ipv4/tcp.c:4486
 tcp_done_with_error+0x47/0xc0 net/ipv4/tcp_input.c:4401
 tcp_write_err net/ipv4/tcp_timer.c:70 [inline]
 tcp_write_timeout net/ipv4/tcp_timer.c:273 [inline]
 tcp_retransmit_timer+0x1195/0x2540 net/ipv4/tcp_timer.c:543
 tcp_write_timer_handler+0x205/0x9a0 net/ipv4/tcp_timer.c:655
 tcp_write_timer+0x126/0x280 net/ipv4/tcp_timer.c:675
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x9d/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6799
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 85 ae 8d f7 e8 c0 9a ba f7 fb bf 01 00 00 00 <e8> 65 b5 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc9000320f0a0 EFLAGS: 00000286
RAX: cd206b95a0cdab00 RBX: 0000000000000000 RCX: cd206b95a0cdab00
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: 0000000000000001
RBP: ffffc9000320f150 R08: ffffffff901d4177 R09: 1ffffffff203a82e
R10: dffffc0000000000 R11: fffffbfff203a82f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000641e14
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__sanitizer_cov_trace_pc+0x41/0x60 kernel/kcov.c:211
Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 34 16 00 00 00 74 2c 8b 91 10 16 00 00 83 fa 02 75 21 48 8b 91 18 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 14 16 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89
RSP: 0018:ffffc9000320f218 EFLAGS: 00000246
RAX: ffffffff8135fc56 RBX: 000000005ad67b40 RCX: ffff88802a13bb80
RDX: ffffc9000c7b1000 RSI: 000000000007ffff RDI: 0000000000000000
RBP: ffffc9000320f4c8 R08: ffff88805ad67a00 R09: 00000000800c000a
R10: dffffc0000000000 R11: fffffbfff203a82f R12: ffffea0000000000
R13: ffff88805ad67b40 R14: 000000000000002e R15: 0000000000000000
 __phys_addr+0xb6/0x170 arch/x86/mm/physaddr.c:28
 virt_to_head_page include/linux/mm.h:911 [inline]
 qlink_to_cache mm/kasan/quarantine.c:120 [inline]
 qlist_free_all+0x4d/0x90 mm/kasan/quarantine.c:173
 kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:444
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x100/0x290 mm/slub.c:3238
 ptlock_alloc+0x1c/0x60 mm/memory.c:5556
 ptlock_init include/linux/mm.h:2241 [inline]
 pgtable_pte_page_ctor include/linux/mm.h:2268 [inline]
 __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline]
 pte_alloc_one+0xc0/0x310 arch/x86/mm/pgtable.c:33
 __pte_alloc+0x21/0x150 mm/memory.c:439
 copy_pte_range mm/memory.c:1032 [inline]
 copy_pmd_range mm/memory.c:1167 [inline]
 copy_pud_range mm/memory.c:1204 [inline]
 copy_p4d_range mm/memory.c:1228 [inline]
 copy_page_range+0x29c2/0x3230 mm/memory.c:1301
 dup_mmap kernel/fork.c:615 [inline]
 dup_mm kernel/fork.c:1466 [inline]
 copy_mm+0xc86/0x13f0 kernel/fork.c:1518
 copy_process+0x17eb/0x3e20 kernel/fork.c:2290
 kernel_clone+0x23f/0x990 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x19a/0x210 kernel/fork.c:2780
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2f35e1d799
Code: 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 01 48
RSP: 002b:00007f2f34076fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f2f36096fa0 RCX: 00007f2f35e1d799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000032a0000
RBP: 00007f2f35eb3c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f2f36097038 R14: 00007f2f36096fa0 R15: 00007ffc069e9598
 </TASK>