============================= [ BUG: Invalid wait context ] 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Not tainted ----------------------------- syz.1.271/3967 is trying to lock: ffff00007fc1ffd8 (&zone->lock){-.-.}-{3:3}, at: rmqueue_buddy mm/page_alloc.c:2909 [inline] ffff00007fc1ffd8 (&zone->lock){-.-.}-{3:3}, at: rmqueue mm/page_alloc.c:3082 [inline] ffff00007fc1ffd8 (&zone->lock){-.-.}-{3:3}, at: get_page_from_freelist+0xaa4/0x20f0 mm/page_alloc.c:3473 other info that might help us debug this: context-{2:2} 2 locks held by syz.1.271/3967: #0: ffff0000126942f8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:717 [inline] #0: ffff0000126942f8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x128/0x648 mm/memory.c:6278 #1: ffff000069f98698 (&pcp->lock){+.+.}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline] #1: ffff000069f98698 (&pcp->lock){+.+.}-{3:3}, at: rmqueue_pcplist mm/page_alloc.c:3032 [inline] #1: ffff000069f98698 (&pcp->lock){+.+.}-{3:3}, at: rmqueue mm/page_alloc.c:3076 [inline] #1: ffff000069f98698 (&pcp->lock){+.+.}-{3:3}, at: get_page_from_freelist+0x428/0x20f0 mm/page_alloc.c:3473 stack backtrace: CPU: 1 UID: 0 PID: 3967 Comm: syz.1.271 Not tainted 6.13.0-rc6-syzkaller-00290-gbe548645527a #0 Hardware name: linux,dummy-virt (DT) Call trace: show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xa4/0xf4 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline] check_wait_context kernel/locking/lockdep.c:4898 [inline] __lock_acquire+0x1514/0x6604 kernel/locking/lockdep.c:5176 lock_acquire kernel/locking/lockdep.c:5849 [inline] lock_acquire+0x450/0x76c kernel/locking/lockdep.c:5814 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x58/0x80 kernel/locking/spinlock.c:162 rmqueue_buddy mm/page_alloc.c:2909 [inline] rmqueue mm/page_alloc.c:3082 [inline] get_page_from_freelist+0xaa4/0x20f0 mm/page_alloc.c:3473 __alloc_pages_noprof+0x1b4/0x2248 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x104/0x490 mm/mempolicy.c:2269 alloc_pages_noprof+0x178/0x1ec mm/mempolicy.c:2348 stack_depot_save_flags+0x2b0/0x9e0 lib/stackdepot.c:627 kasan_save_stack+0x50/0x64 mm/kasan/common.c:48 __kasan_record_aux_stack+0xa0/0xb8 mm/kasan/generic.c:544 kasan_record_aux_stack+0x14/0x20 mm/kasan/generic.c:549 task_work_add+0x9c/0x35c kernel/task_work.c:77 __run_posix_cpu_timers kernel/time/posix-cpu-timers.c:1223 [inline] run_posix_cpu_timers+0x520/0x814 kernel/time/posix-cpu-timers.c:1422 update_process_times+0x16c/0x444 kernel/time/timer.c:2526 tick_sched_handle kernel/time/tick-sched.c:276 [inline] tick_nohz_handler+0x198/0x40c kernel/time/tick-sched.c:297 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x5ec/0x964 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x2a0/0x768 kernel/time/hrtimer.c:1865 timer_handler drivers/clocksource/arm_arch_timer.c:674 [inline] arch_timer_handler_phys+0x40/0x6c drivers/clocksource/arm_arch_timer.c:692 handle_percpu_devid_irq+0x19c/0x30c kernel/irq/chip.c:942 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq_desc kernel/irq/irqdesc.c:714 [inline] generic_handle_domain_irq+0x78/0xa4 kernel/irq/irqdesc.c:770 gic_handle_irq+0x54/0x184 drivers/irqchip/irq-gic.c:370 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:891 do_interrupt_handler+0x12c/0x150 arch/arm64/kernel/entry-common.c:310 __el1_irq arch/arm64/kernel/entry-common.c:560 [inline] el1_interrupt+0x34/0x54 arch/arm64/kernel/entry-common.c:575 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:580 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x40/0xac kernel/locking/spinlock.c:194 (P) spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] rmqueue_bulk mm/page_alloc.c:2328 [inline] __rmqueue_pcplist+0x590/0x1178 mm/page_alloc.c:3003 rmqueue_pcplist mm/page_alloc.c:3045 [inline] rmqueue mm/page_alloc.c:3076 [inline] get_page_from_freelist+0x4a0/0x20f0 mm/page_alloc.c:3473 __alloc_pages_noprof+0x1b4/0x2248 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x104/0x490 mm/mempolicy.c:2269 folio_alloc_mpol_noprof+0x18/0xa0 mm/mempolicy.c:2287 vma_alloc_folio_noprof+0x104/0x1bc mm/mempolicy.c:2317 vma_alloc_zeroed_movable_folio+0x50/0x6c arch/arm64/mm/fault.c:1026 folio_prealloc mm/memory.c:1060 [inline] alloc_anon_folio mm/memory.c:4752 [inline] do_anonymous_page mm/memory.c:4809 [inline] do_pte_missing mm/memory.c:3977 [inline] handle_pte_fault mm/memory.c:5801 [inline] __handle_mm_fault+0x1fec/0x3580 mm/memory.c:5944 handle_mm_fault+0x32c/0x798 mm/memory.c:6112 do_page_fault+0x1e8/0xeac arch/arm64/mm/fault.c:647 do_translation_fault+0x184/0x1e8 arch/arm64/mm/fault.c:783 do_mem_abort+0x68/0x1a4 arch/arm64/mm/fault.c:919 el0_da+0x5c/0x174 arch/arm64/kernel/entry-common.c:604 el0t_64_sync_handler+0xc4/0x138 arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600