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Switch x86-code-dump-fix-truncation.patch to use the pending upstream fix.

This commit is contained in:
Dave Jones 2011-12-19 18:59:58 -05:00
parent f76e0239ae
commit 92505b0d0f
2 changed files with 43 additions and 37 deletions
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3
kernel.spec
View File

@ -2230,6 +2230,9 @@ fi
# ||----w |
# || ||
%changelog
* Mon Dec 19 2011 Dave Jones <davej@redhat.com>
- Switch x86-code-dump-fix-truncation.patch to use the pending upstream fix.
* Mon Dec 19 2011 Dave Jones <davej@redhat.com>
- Disable IMA. (Forces TPM on, which may be undesirable: See 733964, 746097)
Move TPM modules to modules-extra

77
x86-code-dump-fix-truncation.patch
View File

@ -1,70 +1,73 @@
After this patch, kernel code dumps have been sometimes truncated
in the system log:
From: Clemens Ladisch <clemens@ladisch.de>
Date: Mon, 19 Dec 2011 21:07:58 +0000 (+0100)
Subject: x86, dumpstack: Fix code bytes breakage due to missing KERN_CONT
X-Git-Url: https://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftip%2Ftip.git;a=commitdiff_plain;h=13f541c10b30fc6529200d7f9a0073217709622f
commit 9d90c8d9cde929cbc575098e825d7c29d9f45054
"printk: do not mangle valid userspace syslog prefixes"
x86, dumpstack: Fix code bytes breakage due to missing KERN_CONT
The new code is interpreting the bracketed code byte as a loglevel
when it happens to have a legal value for that. Fix it by prefixing
the output with a space.
When printing the code bytes in show_registers(), the markers around the
byte at the fault address could make the printk() format string look
like a valid log level and facility code. This would prevent this byte
from being printed and result in a spurious newline:
Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
[ 7555.765589] Code: 8b 32 e9 94 00 00 00 81 7d 00 ff 00 00 00 0f 87 96 00 00 00 48 8b 83 c0 00 00 00 44 89 e2 44 89 e6 48 89 df 48 8b 80 d8 02 00 00
[ 7555.765683] 8b 48 28 48 89 d0 81 e2 ff 0f 00 00 48 c1 e8 0c 48 c1 e0 04
Add KERN_CONT where needed, and elsewhere in show_registers() for
consistency.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Link: http://lkml.kernel.org/r/4EEFA7AE.9020407@ladisch.de
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---
RHBZ #736815
diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index 3b97a80..c99f9ed 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -105,7 +105,7 @@ void show_registers(struct pt_regs *regs
printk(KERN_EMERG "Stack:\n");
show_stack_log_lvl(NULL, regs, &regs->sp, 0, KERN_EMERG);
- printk(KERN_EMERG "Code: ");
+ printk(KERN_EMERG "Code:");
ip = (u8 *)regs->ip - code_prologue;
if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {
@@ -116,13 +116,13 @@ void show_registers(struct pt_regs *regs
@@ -116,16 +116,16 @@ void show_registers(struct pt_regs *regs)
for (i = 0; i < code_len; i++, ip++) {
if (ip < (u8 *)PAGE_OFFSET ||
probe_kernel_address(ip, c)) {
- printk(" Bad EIP value.");
+ printk(" Bad EIP value.");
+ printk(KERN_CONT " Bad EIP value.");
break;
}
if (ip == (u8 *)regs->ip)
- printk("<%02x> ", c);
+ printk(" <%02x>", c);
+ printk(KERN_CONT "<%02x> ", c);
else
- printk("%02x ", c);
+ printk(" %02x", c);
+ printk(KERN_CONT "%02x ", c);
}
}
printk("\n");
- printk("\n");
+ printk(KERN_CONT "\n");
}
int is_valid_bugaddr(unsigned long ip)
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 19853ad..6d728d9 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -273,7 +273,7 @@ void show_registers(struct pt_regs *regs
show_stack_log_lvl(NULL, regs, (unsigned long *)sp,
0, KERN_EMERG);
- printk(KERN_EMERG "Code: ");
+ printk(KERN_EMERG "Code:");
ip = (u8 *)regs->ip - code_prologue;
if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {
@@ -284,13 +284,13 @@ void show_registers(struct pt_regs *regs
@@ -284,16 +284,16 @@ void show_registers(struct pt_regs *regs)
for (i = 0; i < code_len; i++, ip++) {
if (ip < (u8 *)PAGE_OFFSET ||
probe_kernel_address(ip, c)) {
- printk(" Bad RIP value.");
+ printk(" Bad RIP value.");
+ printk(KERN_CONT " Bad RIP value.");
break;
}
if (ip == (u8 *)regs->ip)
- printk("<%02x> ", c);
+ printk(" <%02x>", c);
+ printk(KERN_CONT "<%02x> ", c);
else
- printk("%02x ", c);
+ printk(" %02x", c);
+ printk(KERN_CONT "%02x ", c);
}
}
printk("\n");
- printk("\n");
+ printk(KERN_CONT "\n");
}
int is_valid_bugaddr(unsigned long ip)