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| author | Keke Ming <ming.jvle@gmail.com> | 2026-01-03 16:42:43 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-01-06 16:34:28 +0100 |
| commit | a491c02c2770c9c2d02b96fad7e3a176d77bb737 (patch) | |
| tree | 0745bb3f3dab130dc1b257d642f0952565216d15 /kernel | |
| parent | 1752a1ad43a1d4fd450a8ef5f8d240f9e228e0a3 (diff) | |
uprobes: use kmap_local_page() for temporary page mappings
Replace deprecated kmap_atomic() with kmap_local_page().
Signed-off-by: Keke Ming <ming.jvle@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Link: https://patch.msgid.link/20260103084243.195125-6-ming.jvle@gmail.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/uprobes.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index d546d32390a8..a7d7d83ca1d7 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -179,16 +179,16 @@ bool __weak is_trap_insn(uprobe_opcode_t *insn) void uprobe_copy_from_page(struct page *page, unsigned long vaddr, void *dst, int len) { - void *kaddr = kmap_atomic(page); + void *kaddr = kmap_local_page(page); memcpy(dst, kaddr + (vaddr & ~PAGE_MASK), len); - kunmap_atomic(kaddr); + kunmap_local(kaddr); } static void copy_to_page(struct page *page, unsigned long vaddr, const void *src, int len) { - void *kaddr = kmap_atomic(page); + void *kaddr = kmap_local_page(page); memcpy(kaddr + (vaddr & ~PAGE_MASK), src, len); - kunmap_atomic(kaddr); + kunmap_local(kaddr); } static int verify_opcode(struct page *page, unsigned long vaddr, uprobe_opcode_t *insn, @@ -323,7 +323,7 @@ __update_ref_ctr(struct mm_struct *mm, unsigned long vaddr, short d) return ret == 0 ? -EBUSY : ret; } - kaddr = kmap_atomic(page); + kaddr = kmap_local_page(page); ptr = kaddr + (vaddr & ~PAGE_MASK); if (unlikely(*ptr + d < 0)) { @@ -336,7 +336,7 @@ __update_ref_ctr(struct mm_struct *mm, unsigned long vaddr, short d) *ptr += d; ret = 0; out: - kunmap_atomic(kaddr); + kunmap_local(kaddr); put_page(page); return ret; } |