===================================================== BUG: KMSAN: uninit-value in profile_hit include/linux/profile.h:53 [inline] BUG: KMSAN: uninit-value in profile_tick+0x1ae/0x1b0 kernel/profile.c:339 profile_hit include/linux/profile.h:53 [inline] profile_tick+0x1ae/0x1b0 kernel/profile.c:339 tick_sched_handle kernel/time/tick-sched.c:277 [inline] tick_nohz_handler+0x588/0x690 kernel/time/tick-sched.c:297 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x56f/0xe40 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x936/0x1490 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0xa6/0x3a0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x7e/0x90 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:94 [inline] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x25/0x50 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:401 [inline] shmem_add_to_page_cache+0xa09/0xd70 mm/shmem.c:799 shmem_alloc_and_add_folio+0x8cf/0x1100 mm/shmem.c:1689 shmem_get_folio_gfp+0x9ae/0x21a0 mm/shmem.c:2055 shmem_fault+0x1eb/0x690 mm/shmem.c:2255 __do_fault+0x1f2/0x620 mm/memory.c:4531 do_read_fault mm/memory.c:4894 [inline] do_fault mm/memory.c:5024 [inline] do_pte_missing mm/memory.c:3880 [inline] handle_pte_fault mm/memory.c:5300 [inline] __handle_mm_fault mm/memory.c:5441 [inline] handle_mm_fault+0x665b/0xce10 mm/memory.c:5606 faultin_page mm/gup.c:958 [inline] __get_user_pages+0xa59/0x2c20 mm/gup.c:1257 populate_vma_page_range mm/gup.c:1697 [inline] __mm_populate+0x5f8/0x990 mm/gup.c:1800 mm_populate include/linux/mm.h:3413 [inline] vm_mmap_pgoff+0x351/0x4e0 mm/util.c:578 ksys_mmap_pgoff+0x16e/0x7a0 mm/mmap.c:1433 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline] __x64_sys_mmap+0x1a8/0x240 arch/x86/kernel/sys_x86_64.c:79 x64_sys_call+0x1bbf/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:10 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Local variable warn created at: __dquot_alloc_space+0x4e/0x18c0 fs/quota/dquot.c:1684 dquot_alloc_space_nodirty include/linux/quotaops.h:299 [inline] dquot_alloc_block_nodirty include/linux/quotaops.h:326 [inline] shmem_inode_acct_blocks+0x3c4/0x5c0 mm/shmem.c:231 CPU: 1 PID: 5634 Comm: syz-executor.4 Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 =====================================================