函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\events\uprobes.c Create Date:2022-07-27 15:07:58
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：If we are singlestepping, then ensure this thread is not connected to* non-fatal signals until completion of singlestep. When xol insn itself* triggers the signal, restart the original insn even if the task is

函数原型：bool uprobe_deny_signal(void)

返回类型：bool

参数：无

1969  t等于当前进程
1970  utask等于utask
1972  如果此条件成立可能性大(为编译器优化)(!utask || !active_uprobe)则返回:false
1975  WARN_ON_ONCE(state != UTASK_SSTEP)
1977  如果signal_pending(t)则
1978  spin_lock_irq( & siglock)
1979  清除线程指定标志
1980  spin_unlock_irq( & siglock)
1982  如果__fatal_signal_pending(t)或If xol insn itself traps and generates a signal(Say,* SIGILL/SIGSEGV/etc), then detect the case where a singlestepped* instruction jumps back to its own address. It is assumed that anything* like do_page_fault/do_trap/etc sets thread.trap_nr != -1.则
1983  state等于UTASK_SSTEP_TRAPPED
1984  Set thread flags in other task's structures.* See asm/thread_info.h for TIF_xxxx flags available:
1988  返回:true
调用者
名称描述
get_signal