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Attempt to fix rhbz #736815 by printing spaces before the brackets

This commit is contained in:
Chuck Ebbert 2011-12-07 10:13:53 -05:00
parent 1cb5d1c666
commit ede16e8579
2 changed files with 79 additions and 0 deletions
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9
kernel.spec
View File

@ -728,6 +728,9 @@ Patch21029: nfsv4-include-bitmap-in-nfsv4_get_acl_data.patch
#rhbz 590880
Patch21030: alps.patch
# rhbz 736815
Patch21040: x86-code-dump-fix-truncation.patch
# compat-wireless patches
Patch50000: compat-wireless-config-fixups.patch
Patch50001: compat-add-module_usb_driver-and-module_platform_driver.patch
@ -1405,6 +1408,9 @@ ApplyPatch nfsv4-include-bitmap-in-nfsv4_get_acl_data.patch
#rhbz 590880
ApplyPatch alps.patch
# rhbz 736815
ApplyPatch x86-code-dump-fix-truncation.patch
# END OF PATCH APPLICATIONS
%endif
@ -2213,6 +2219,9 @@ fi
# ||----w |
# || ||
%changelog
* Wed Dec 07 2011 Chuck Ebbert <cebbert@redhat.com>
- Attempt to fix rhbz #736815 by printing spaces before the brackets
* Tue Dec 06 2011 Dave Jones <davej@redhat.com> 3.2.0-0.rc4.git4.2.fc17
- Linux 3.2-rc4-git2 (b835c0f47f725d864bf2545f10c733b754bb6d51)

70
x86-code-dump-fix-truncation.patch Normal file
View File

@ -0,0 +1,70 @@
After this patch, kernel code dumps have been sometimes truncated
in the system log:
commit 9d90c8d9cde929cbc575098e825d7c29d9f45054
"printk: do not mangle valid userspace syslog prefixes"
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.
Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
---
RHBZ #736815
--- 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
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.");
break;
}
if (ip == (u8 *)regs->ip)
- printk("<%02x> ", c);
+ printk(" <%02x>", c);
else
- printk("%02x ", c);
+ printk(" %02x", c);
}
}
printk("\n");
--- 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
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.");
break;
}
if (ip == (u8 *)regs->ip)
- printk("<%02x> ", c);
+ printk(" <%02x>", c);
else
- printk("%02x ", c);
+ printk(" %02x", c);
}
}
printk("\n");