linux-kernel - [tip: x86/fpu] x86/extable: Tidy up redundant handler functions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 14 Sep 2021 19:19:37 -0000
From:   "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...e.de>,
        x86@...nel.org, linux-kernel@...r.kernel.org
Subject: [tip: x86/fpu] x86/extable: Tidy up redundant handler functions

The following commit has been merged into the x86/fpu branch of tip:

Commit-ID:     326b567f82df0c4c8f50092b9af9a3014616fb3c
Gitweb:        https://git.kernel.org/tip/326b567f82df0c4c8f50092b9af9a3014616fb3c
Author:        Thomas Gleixner <tglx@...utronix.de>
AuthorDate:    Wed, 08 Sep 2021 15:29:12 +02:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Mon, 13 Sep 2021 12:33:06 +02:00

x86/extable: Tidy up redundant handler functions

No need to have the same code all over the place.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Borislav Petkov <bp@...e.de>
Link: https://lkml.kernel.org/r/20210908132524.963232825@linutronix.de
---
 arch/x86/mm/extable.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
index e1664e9..d9a1046 100644
--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c
@@ -39,9 +39,8 @@ __visible bool ex_handler_fault(const struct exception_table_entry *fixup,
 				unsigned long error_code,
 				unsigned long fault_addr)
 {
-	regs->ip = ex_fixup_addr(fixup);
 	regs->ax = trapnr;
-	return true;
+	return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
 }
 EXPORT_SYMBOL_GPL(ex_handler_fault);
 
@@ -76,8 +75,7 @@ __visible bool ex_handler_uaccess(const struct exception_table_entry *fixup,
 				  unsigned long fault_addr)
 {
 	WARN_ONCE(trapnr == X86_TRAP_GP, "General protection fault in user access. Non-canonical address?");
-	regs->ip = ex_fixup_addr(fixup);
-	return true;
+	return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
 }
 EXPORT_SYMBOL(ex_handler_uaccess);
 
@@ -87,9 +85,7 @@ __visible bool ex_handler_copy(const struct exception_table_entry *fixup,
 			       unsigned long fault_addr)
 {
 	WARN_ONCE(trapnr == X86_TRAP_GP, "General protection fault in user access. Non-canonical address?");
-	regs->ip = ex_fixup_addr(fixup);
-	regs->ax = trapnr;
-	return true;
+	return ex_handler_fault(fixup, regs, trapnr, error_code, fault_addr);
 }
 EXPORT_SYMBOL(ex_handler_copy);
 
@@ -103,10 +99,9 @@ __visible bool ex_handler_rdmsr_unsafe(const struct exception_table_entry *fixup
 		show_stack_regs(regs);
 
 	/* Pretend that the read succeeded and returned 0. */
-	regs->ip = ex_fixup_addr(fixup);
 	regs->ax = 0;
 	regs->dx = 0;
-	return true;
+	return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
 }
 EXPORT_SYMBOL(ex_handler_rdmsr_unsafe);
 
@@ -121,8 +116,7 @@ __visible bool ex_handler_wrmsr_unsafe(const struct exception_table_entry *fixup
 		show_stack_regs(regs);
 
 	/* Pretend that the write succeeded. */
-	regs->ip = ex_fixup_addr(fixup);
-	return true;
+	return ex_handler_default(fixup, regs, trapnr, error_code, fault_addr);
 }
 EXPORT_SYMBOL(ex_handler_wrmsr_unsafe);