Hi I have a program that registers a periodic timer that sends SIGALRM with 1ms interval. If I compile a dummy OpenCL kernel while the signal is triggered, I get these messages:
"amdgpu: init_user_pages: Failed to register MMU notifier: -4" Apparently, there needs to be fatal_signal_pending. Signed-off-by: Mikulas Patocka <[email protected]> Cc: [email protected] --- mm/vma.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) Index: linux-2.6/mm/vma.c =================================================================== --- linux-2.6.orig/mm/vma.c 2025-10-13 21:42:48.000000000 +0200 +++ linux-2.6/mm/vma.c 2025-11-02 19:54:04.000000000 +0100 @@ -2156,7 +2156,7 @@ static void vm_lock_mapping(struct mm_st * mm_take_all_locks() and mm_drop_all_locks are expensive operations * that may have to take thousand of locks. * - * mm_take_all_locks() can fail if it's interrupted by signals. + * mm_take_all_locks() can fail if it's interrupted by fatal signals. */ int mm_take_all_locks(struct mm_struct *mm) { @@ -2175,14 +2175,14 @@ int mm_take_all_locks(struct mm_struct * * is reached. */ for_each_vma(vmi, vma) { - if (signal_pending(current)) + if (fatal_signal_pending(current)) goto out_unlock; vma_start_write(vma); } vma_iter_init(&vmi, mm, 0); for_each_vma(vmi, vma) { - if (signal_pending(current)) + if (fatal_signal_pending(current)) goto out_unlock; if (vma->vm_file && vma->vm_file->f_mapping && is_vm_hugetlb_page(vma)) @@ -2191,7 +2191,7 @@ int mm_take_all_locks(struct mm_struct * vma_iter_init(&vmi, mm, 0); for_each_vma(vmi, vma) { - if (signal_pending(current)) + if (fatal_signal_pending(current)) goto out_unlock; if (vma->vm_file && vma->vm_file->f_mapping && !is_vm_hugetlb_page(vma)) @@ -2200,7 +2200,7 @@ int mm_take_all_locks(struct mm_struct * vma_iter_init(&vmi, mm, 0); for_each_vma(vmi, vma) { - if (signal_pending(current)) + if (fatal_signal_pending(current)) goto out_unlock; if (vma->anon_vma) list_for_each_entry(avc, &vma->anon_vma_chain, same_vma)
