mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 23:05:23 +07:00
5ad18b2e60
Pull force_sig() argument change from Eric Biederman: "A source of error over the years has been that force_sig has taken a task parameter when it is only safe to use force_sig with the current task. The force_sig function is built for delivering synchronous signals such as SIGSEGV where the userspace application caused a synchronous fault (such as a page fault) and the kernel responded with a signal. Because the name force_sig does not make this clear, and because the force_sig takes a task parameter the function force_sig has been abused for sending other kinds of signals over the years. Slowly those have been fixed when the oopses have been tracked down. This set of changes fixes the remaining abusers of force_sig and carefully rips out the task parameter from force_sig and friends making this kind of error almost impossible in the future" * 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (27 commits) signal/x86: Move tsk inside of CONFIG_MEMORY_FAILURE in do_sigbus signal: Remove the signal number and task parameters from force_sig_info signal: Factor force_sig_info_to_task out of force_sig_info signal: Generate the siginfo in force_sig signal: Move the computation of force into send_signal and correct it. signal: Properly set TRACE_SIGNAL_LOSE_INFO in __send_signal signal: Remove the task parameter from force_sig_fault signal: Use force_sig_fault_to_task for the two calls that don't deliver to current signal: Explicitly call force_sig_fault on current signal/unicore32: Remove tsk parameter from __do_user_fault signal/arm: Remove tsk parameter from __do_user_fault signal/arm: Remove tsk parameter from ptrace_break signal/nds32: Remove tsk parameter from send_sigtrap signal/riscv: Remove tsk parameter from do_trap signal/sh: Remove tsk parameter from force_sig_info_fault signal/um: Remove task parameter from send_sigtrap signal/x86: Remove task parameter from send_sigtrap signal: Remove task parameter from force_sig_mceerr signal: Remove task parameter from force_sig signal: Remove task parameter from force_sigsegv ...
94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2012 Regents of the University of California
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*/
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#ifndef _ASM_RISCV_BUG_H
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#define _ASM_RISCV_BUG_H
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#include <linux/compiler.h>
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#include <linux/const.h>
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#include <linux/types.h>
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#include <asm/asm.h>
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#ifdef CONFIG_GENERIC_BUG
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#define __INSN_LENGTH_MASK _UL(0x3)
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#define __INSN_LENGTH_32 _UL(0x3)
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#define __COMPRESSED_INSN_MASK _UL(0xffff)
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#define __BUG_INSN_32 _UL(0x00100073) /* ebreak */
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#define __BUG_INSN_16 _UL(0x9002) /* c.ebreak */
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#ifndef __ASSEMBLY__
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typedef u32 bug_insn_t;
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#ifdef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
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#define __BUG_ENTRY_ADDR RISCV_INT " 1b - 2b"
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#define __BUG_ENTRY_FILE RISCV_INT " %0 - 2b"
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#else
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#define __BUG_ENTRY_ADDR RISCV_PTR " 1b"
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#define __BUG_ENTRY_FILE RISCV_PTR " %0"
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#endif
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define __BUG_ENTRY \
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__BUG_ENTRY_ADDR "\n\t" \
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__BUG_ENTRY_FILE "\n\t" \
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RISCV_SHORT " %1\n\t" \
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RISCV_SHORT " %2"
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#else
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#define __BUG_ENTRY \
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__BUG_ENTRY_ADDR "\n\t" \
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RISCV_SHORT " %2"
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#endif
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#define __BUG_FLAGS(flags) \
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do { \
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__asm__ __volatile__ ( \
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"1:\n\t" \
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"ebreak\n" \
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".pushsection __bug_table,\"aw\"\n\t" \
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"2:\n\t" \
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__BUG_ENTRY "\n\t" \
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".org 2b + %3\n\t" \
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".popsection" \
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: \
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: "i" (__FILE__), "i" (__LINE__), \
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"i" (flags), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#endif /* !__ASSEMBLY__ */
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#else /* CONFIG_GENERIC_BUG */
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#ifndef __ASSEMBLY__
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#define __BUG_FLAGS(flags) do { \
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__asm__ __volatile__ ("ebreak\n"); \
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} while (0)
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#endif /* !__ASSEMBLY__ */
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#endif /* CONFIG_GENERIC_BUG */
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#define BUG() do { \
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__BUG_FLAGS(0); \
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unreachable(); \
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} while (0)
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#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
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#define HAVE_ARCH_BUG
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#include <asm-generic/bug.h>
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#ifndef __ASSEMBLY__
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struct pt_regs;
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struct task_struct;
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extern void die(struct pt_regs *regs, const char *str);
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extern void do_trap(struct pt_regs *regs, int signo, int code,
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unsigned long addr);
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_RISCV_BUG_H */
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