swh:1:snp:c3bf2749e3476071fa748f67b0ffa2fdc5fe49d9
- v6.0-rc5
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- v6.0-rc3
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- v5.9-rc8
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- v5.11
- v5.10-rc7
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- v5.1-rc7
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- v4.11-rc8
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- v4.1
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- v3.9-rc8
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- v3.8-rc7
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- v3.6-rc7
- v3.6-rc6
- v3.6-rc5
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- v3.6
- v3.5-rc7
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- v3.5
- v3.4-rc7
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- v3.4
- v3.3-rc7
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- v3.3-rc5
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- v3.3
- v3.2-rc7
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- v3.2-rc2
- v3.2-rc1
- v3.2
- v3.19-rc7
- v3.19-rc6
- v3.19-rc5
- v3.19-rc4
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- v3.14-rc8
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- v3.13-rc8
- v3.13-rc7
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- v3.13
- v3.12-rc7
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- v3.11
- v3.10-rc7
- v3.10-rc6
- v3.10-rc5
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- v3.10
- v3.1-rc9
- v3.1-rc8
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- v3.1-rc5
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- v3.1-rc10
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- v3.1
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- v3.0-rc6
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- v3.0-rc4
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- v3.0-rc1
- v3.0
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- v2.6.39-rc6
- v2.6.39-rc5
- v2.6.39-rc4
- v2.6.39-rc3
- v2.6.39-rc2
- v2.6.39-rc1
- v2.6.39
- v2.6.38-rc8
- v2.6.38-rc7
- v2.6.38-rc6
- v2.6.38-rc5
- v2.6.38-rc4
- v2.6.38-rc3
- v2.6.38-rc2
- v2.6.38-rc1
- v2.6.38
- v2.6.37-rc8
- v2.6.37-rc7
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- v2.6.37-rc4
- v2.6.37-rc3
- v2.6.37-rc2
- v2.6.37-rc1
- v2.6.37
- v2.6.36-rc8
- v2.6.36-rc7
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- v2.6.36-rc2
- v2.6.36-rc1
- v2.6.36
- v2.6.35-rc6
- v2.6.35-rc5
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- v2.6.35
- v2.6.34-rc7
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- v2.6.34
- v2.6.33-rc8
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- v2.6.33-rc2
- v2.6.33-rc1
- v2.6.33
- v2.6.32-rc8
- v2.6.32-rc7
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- v2.6.32
- v2.6.31-rc9
- v2.6.31-rc8
- v2.6.31-rc7
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- v2.6.31-rc1
- v2.6.31
- v2.6.30-rc8
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- v2.6.30-rc2
- v2.6.30-rc1
- v2.6.30
- v2.6.29-rc8
- v2.6.29-rc7
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- v2.6.29
- v2.6.28-rc9
- v2.6.28-rc8
- v2.6.28-rc7
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- v2.6.28
- v2.6.27-rc9
- v2.6.27-rc8
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- v2.6.27
- v2.6.26-rc9
- v2.6.26-rc8
- v2.6.26-rc7
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- v2.6.26-rc5
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- v2.6.26-rc3
- v2.6.26-rc2
- v2.6.26-rc1
- v2.6.26
- v2.6.25-rc9
- v2.6.25-rc8
- v2.6.25-rc7
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- v2.6.25-rc2
- v2.6.25-rc1
- v2.6.25
- v2.6.24-rc8
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- v2.6.24-rc1
- v2.6.24
- v2.6.23-rc9
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- v2.6.23
- v2.6.22-rc7
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- v2.6.21-rc7
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- v2.6.17
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- v2.6.16
- v2.6.15-rc7
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- v2.6.15-rc5
- v2.6.15-rc4
- v2.6.15-rc3
- v2.6.15-rc2
- v2.6.15-rc1
- v2.6.15
- v2.6.14-rc5
- v2.6.14-rc4
- v2.6.14-rc3
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- v2.6.14-rc1
- v2.6.14
- v2.6.13-rc7
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- v2.6.13-rc5
- v2.6.13-rc4
- v2.6.13-rc3
- v2.6.13-rc2
- v2.6.13-rc1
- v2.6.13
- v2.6.12-rc6
- v2.6.12-rc5
- v2.6.12-rc4
- v2.6.12-rc3
- v2.6.12-rc2
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Tip revision: 2c85ebc57b3e1817b6ce1a6b703928e113a90442 authored by Linus Torvalds on 13 December 2020, 22:41:30 UTC
Linux 5.10
Linux 5.10
Tip revision: 2c85ebc
stacktrace.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Copyright (C) 2013 Richard Weinberger <richard@nod.at>
* Copyright (C) 2014 Google Inc., Author: Daniel Walter <dwalter@google.com>
*/
#include <linux/kallsyms.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/stacktrace.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <asm/stacktrace.h>
void dump_trace(struct task_struct *tsk,
const struct stacktrace_ops *ops,
void *data)
{
int reliable = 0;
unsigned long *sp, bp, addr;
struct pt_regs *segv_regs = tsk->thread.segv_regs;
struct stack_frame *frame;
bp = get_frame_pointer(tsk, segv_regs);
sp = get_stack_pointer(tsk, segv_regs);
frame = (struct stack_frame *)bp;
while (((long) sp & (THREAD_SIZE-1)) != 0) {
addr = *sp;
if (__kernel_text_address(addr)) {
reliable = 0;
if ((unsigned long) sp == bp + sizeof(long)) {
frame = frame ? frame->next_frame : NULL;
bp = (unsigned long)frame;
reliable = 1;
}
ops->address(data, addr, reliable);
}
sp++;
}
}
static void save_addr(void *data, unsigned long address, int reliable)
{
struct stack_trace *trace = data;
if (!reliable)
return;
if (trace->nr_entries >= trace->max_entries)
return;
trace->entries[trace->nr_entries++] = address;
}
static const struct stacktrace_ops dump_ops = {
.address = save_addr
};
static void __save_stack_trace(struct task_struct *tsk, struct stack_trace *trace)
{
dump_trace(tsk, &dump_ops, trace);
}
void save_stack_trace(struct stack_trace *trace)
{
__save_stack_trace(current, trace);
}
EXPORT_SYMBOL_GPL(save_stack_trace);
void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
{
__save_stack_trace(tsk, trace);
}
EXPORT_SYMBOL_GPL(save_stack_trace_tsk);