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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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f36e7c9845
Remove my old invalid email address which can be found in a couple of files. Instead of updating it, just remove my contact data completely from source files. We have git and other tools which allow to figure out who is responsible for what with recent contact data. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Stack trace management functions
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*
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* Copyright IBM Corp. 2006
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*/
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#include <linux/stacktrace.h>
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#include <asm/stacktrace.h>
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#include <asm/unwind.h>
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#include <asm/kprobes.h>
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void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie,
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struct task_struct *task, struct pt_regs *regs)
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{
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struct unwind_state state;
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unsigned long addr;
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unwind_for_each_frame(&state, task, regs, 0) {
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addr = unwind_get_return_address(&state);
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if (!addr || !consume_entry(cookie, addr))
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break;
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}
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}
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int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry,
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void *cookie, struct task_struct *task)
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{
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struct unwind_state state;
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unsigned long addr;
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unwind_for_each_frame(&state, task, NULL, 0) {
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if (state.stack_info.type != STACK_TYPE_TASK)
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return -EINVAL;
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if (state.regs)
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return -EINVAL;
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addr = unwind_get_return_address(&state);
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if (!addr)
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return -EINVAL;
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#ifdef CONFIG_KPROBES
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/*
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* Mark stacktraces with kretprobed functions on them
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* as unreliable.
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*/
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if (state.ip == (unsigned long)__kretprobe_trampoline)
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return -EINVAL;
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#endif
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if (!consume_entry(cookie, addr))
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return -EINVAL;
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}
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/* Check for stack corruption */
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if (unwind_error(&state))
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return -EINVAL;
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return 0;
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}
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