diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2025-07-20 14:21:16 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-08-21 21:09:19 +0300 |
| commit | ec46350fe1e2338f42ee84974c36b25afe8ba53a (patch) | |
| tree | 0ed5ec7cac24be042a17707ffe91473e5c0f1d42 /include/linux | |
| parent | f8b7c528b4fb7018d12b6bb63bb52576cfc73697 (diff) | |
| download | linux-ec46350fe1e2338f42ee84974c36b25afe8ba53a.tar.xz | |
uprobes: Add is_register argument to uprobe_write and uprobe_write_opcode
The uprobe_write has special path to restore the original page when we
write original instruction back. This happens when uprobe_write detects
that we want to write anything else but breakpoint instruction.
Moving the detection away and passing it to uprobe_write as argument,
so it's possible to write different instructions (other than just
breakpoint and rest).
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/r/20250720112133.244369-7-jolsa@kernel.org
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/uprobes.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 147c4a0a1af9..518b26756469 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -197,9 +197,10 @@ extern bool is_swbp_insn(uprobe_opcode_t *insn); extern bool is_trap_insn(uprobe_opcode_t *insn); extern unsigned long uprobe_get_swbp_addr(struct pt_regs *regs); extern unsigned long uprobe_get_trap_addr(struct pt_regs *regs); -extern int uprobe_write_opcode(struct arch_uprobe *auprobe, struct vm_area_struct *vma, unsigned long vaddr, uprobe_opcode_t); +extern int uprobe_write_opcode(struct arch_uprobe *auprobe, struct vm_area_struct *vma, unsigned long vaddr, uprobe_opcode_t, + bool is_register); extern int uprobe_write(struct arch_uprobe *auprobe, struct vm_area_struct *vma, const unsigned long opcode_vaddr, - uprobe_opcode_t *insn, int nbytes, uprobe_write_verify_t verify); + uprobe_opcode_t *insn, int nbytes, uprobe_write_verify_t verify, bool is_register); extern struct uprobe *uprobe_register(struct inode *inode, loff_t offset, loff_t ref_ctr_offset, struct uprobe_consumer *uc); extern int uprobe_apply(struct uprobe *uprobe, struct uprobe_consumer *uc, bool); extern void uprobe_unregister_nosync(struct uprobe *uprobe, struct uprobe_consumer *uc); |