AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-23 12:24:54 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
55a76b59b5
linux_dsm_epyc7002/arch/x86/include/asm/kdebug.h

33 lines
714 B
C
Raw Normal View History

x86: Fix ASM_X86__ header guards Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-23 12:26:29 +07:00
#ifndef _ASM_X86_KDEBUG_H
#define _ASM_X86_KDEBUG_H
x86: unify include/asm/kdebug_32/64.h The 64 bit variant has additional function prototypes which do no harm for 32 bit. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-16 04:28:20 +07:00
#include <linux/notifier.h>
struct pt_regs;
/* Grossly misnamed. */
enum die_val {
DIE_OOPS = 1,
DIE_INT3,
DIE_DEBUG,
DIE_PANIC,
DIE_NMI,
DIE_DIE,
DIE_KERNELDEBUG,
DIE_TRAP,
DIE_GPF,
DIE_CALL,
DIE_PAGE_FAULT,
kgdb: fix NMI hangs This patch fixes the hang regression with kgdb when the NMI interrupt comes in while the master core is returning from an exception. Adjust the NMI logic such that KGDB will not stop NMI exceptions from occurring by in general returning NOTIFY_DONE. It is not possible to distinguish the debug NMI sync vs the normal NMI apic interrupt so kgdb needs to catch the unknown NMI if it the debugger was previously active on one of the cpus. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-16 03:55:53 +07:00
DIE_NMIUNKNOWN,
x86: unify include/asm/kdebug_32/64.h The 64 bit variant has additional function prototypes which do no harm for 32 bit. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-16 04:28:20 +07:00
};
x86/dumpstack: Fix printk_address for direct addresses Consider a kernel crash in a module, simulated the following way: static int my_init(void) { char *map = (void *)0x5; *map = 3; return 0; } module_init(my_init); When we turn off FRAME_POINTERs, the very first instruction in that function causes a BUG. The problem is that we print IP in the BUG report using %pB (from printk_address). And %pB decrements the pointer by one to fix printing addresses of functions with tail calls. This was added in commit 71f9e59800e5ad4 ("x86, dumpstack: Use %pB format specifier for stack trace") to fix the call stack printouts. So instead of correct output: BUG: unable to handle kernel NULL pointer dereference at 0000000000000005 IP: [<ffffffffa01ac000>] my_init+0x0/0x10 [pb173] We get: BUG: unable to handle kernel NULL pointer dereference at 0000000000000005 IP: [<ffffffffa0152000>] 0xffffffffa0151fff To fix that, we use %pS only for stack addresses printouts (via newly added printk_stack_address) and %pB for regs->ip (via printk_address). I.e. we revert to the old behaviour for all except call stacks. And since from all those reliable is 1, we remove that parameter from printk_address. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: joe@perches.com Cc: jirislaby@gmail.com Link: http://lkml.kernel.org/r/1382706418-8435-1-git-send-email-jslaby@suse.cz Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-10-25 20:06:58 +07:00
extern void printk_address(unsigned long address);
include/asm-x86/kdebug.h: checkpatch cleanups - formatting only Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-23 15:02:31 +07:00
extern void die(const char *, struct pt_regs *,long);
x86-64: honor notify_die() returning NOTIFY_STOP This requires making die() return a value, making its callers honor this (and be prepared that it may return), and making oops_end() have two additional parameters. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30 19:31:23 +07:00
extern int __must_check __die(const char *, struct pt_regs *, long);
x86/dumpstack: Add show_stack_regs() and use it Add a helper to dump supplied pt_regs and use it in the MSR exception handling code to have precise stack traces pointing to the actual function causing the MSR access exception and not the stack frame of the exception handler itself. The new output looks like this: unchecked MSR access error: RDMSR from 0xdeadbeef at rIP: 0xffffffff8102ddb6 (early_init_intel+0x16/0x3a0) 00000000756e6547 ffffffff81c03f68 ffffffff81dd0940 ffffffff81c03f10 ffffffff81d42e65 0000000001000000 ffffffff81c03f58 ffffffff81d3e5a3 0000800000000000 ffffffff81800080 ffffffffffffffff 0000000000000000 Call Trace: [<ffffffff81d42e65>] early_cpu_init+0xe7/0x136 [<ffffffff81d3e5a3>] setup_arch+0xa5/0x9df [<ffffffff81d38bb9>] start_kernel+0x9f/0x43a [<ffffffff81d38294>] x86_64_start_reservations+0x2f/0x31 [<ffffffff81d383fe>] x86_64_start_kernel+0x168/0x176 Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Andy Lutomirski <luto@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1467671487-10344-4-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-05 05:31:27 +07:00
extern void show_stack_regs(struct pt_regs *regs);
x86: __show_registers() and __show_regs() API unification Currently the low-level function to dump user-passed registers on i386 is called __show_registers() whereas on x86-64 it's called __show_regs(). Unify the API to simplify porting of kmemcheck to x86-64. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Vegard Nossum <vegard.nossum@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-03 20:40:48 +07:00
extern void __show_regs(struct pt_regs *regs, int all);
x86: unify include/asm/kdebug_32/64.h The 64 bit variant has additional function prototypes which do no harm for 32 bit. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-16 04:28:20 +07:00
extern unsigned long oops_begin(void);
x86-64: honor notify_die() returning NOTIFY_STOP This requires making die() return a value, making its callers honor this (and be prepared that it may return), and making oops_end() have two additional parameters. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30 19:31:23 +07:00
extern void oops_end(unsigned long, struct pt_regs *, int signr);
x86: unify include/asm/kdebug_32/64.h The 64 bit variant has additional function prototypes which do no harm for 32 bit. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2007-10-16 04:28:20 +07:00
x86: Fix ASM_X86__ header guards Change header guards named "ASM_X86__*" to "_ASM_X86_*" since: a. the double underscore is ugly and pointless. b. no leading underscore violates namespace constraints. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-23 12:26:29 +07:00
#endif /* _ASM_X86_KDEBUG_H */
Reference in New Issue Copy Permalink