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linux-2.6/arch/x86_64/kernel
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Masoud Asgharifard Sharbiani abd4f7505b x86: i386-show-unhandled-signals-v3 
This patch makes the i386 behave the same way that x86_64 does when a
segfault happens.  A line gets printed to the kernel log so that tools
that need to check for failures can behave more uniformly between
debug.show_unhandled_signals sysctl variable to 0 (or by doing echo 0 >
/proc/sys/debug/exception-trace)

Also, all of the lines being printed are now using printk_ratelimit() to
deny the ability of DoS from a local user with a program like the
following:

main()
{
       while (1)
               if (!fork()) *(int *)0 = 0;
}

This new revision also includes the fix that Andrew did which got rid of
new sysctl that was added to the system in earlier versions of this.
Also, 'show-unhandled-signals' sysctl has been renamed back to the old
'exception-trace' to avoid breakage of people's scripts.

AK: Enabling by default for i386 will be likely controversal, but let's see what happens
AK: Really folks, before complaining just fix your segfaults
AK: I bet this will find a lot of silent issues

Signed-off-by: Masoud Sharbiani <masouds@google.com>
Signed-off-by: Andi Kleen <ak@suse.de>
[ Personally, I've found the complaints useful on x86-64, so I'm all for
  this. That said, I wonder if we could do it more prettily..   -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2007-07-22 11:03:37 -07:00
..
acpi PM: Integrate beeping flag with existing acpi_sleep flags 2007-07-19 10:04:43 -07:00
cpufreq [CPUFREQ] the overdue removal of X86_SPEEDSTEP_CENTRINO_ACPI 2007-07-13 01:29:51 -04:00
Makefile Use a new CPU feature word to cover features that are spread around 2007-07-12 10:55:54 -07:00
aperture.c x86_64: arch/x86_64/kernel/aperture.c lower printk severity 2007-07-21 18:37:14 -07:00
apic.c x86_64: apic.c coding style janitor work 2007-07-21 18:37:09 -07:00
asm-offsets.c [PATCH] x86-64: Auto compute __NR_syscall_max at compile time 2007-05-02 19:27:18 +02:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
bugs.c x86_64: Add asm/mtrr.h include for some builds 2007-05-12 09:47:15 -07:00
crash.c move die notifier handling to common code 2007-05-08 11:15:04 -07:00
crash_dump.c [PATCH] kdump: read previous kernel's memory 2006-01-10 08:01:28 -08:00
e820.c x86_64: arch/x86_64/kernel/e820.c lower printk severity 2007-07-21 18:37:14 -07:00
early-quirks.c x86_64: move iommu declaration from proto to iommu.h 2007-07-21 18:37:14 -07:00
early_printk.c xen: use the hvc console infrastructure for Xen console 2007-07-18 08:47:44 -07:00
entry.S x86_64: support poll() on /dev/mcelog 2007-07-21 18:37:10 -07:00
genapic.c [PATCH] x86: adjust inclusion of asm/fixmap.h 2007-05-02 19:27:04 +02:00
genapic_flat.c [PATCH] x86-64: Fix allnoconfig error in genapic_flat.c 2007-05-02 19:27:21 +02:00
head.S x86: initial fixmap support 2007-07-16 09:05:35 -07:00
head64.c x86_64: display more intuitive error message if kernel is not 2MB aligned 2007-05-11 08:29:32 -07:00
hpet.c x86_64: fiuxp pt_reqs leftovers 2007-07-21 18:37:09 -07:00
i387.c [PATCH] x86-64: use BUILD_BUG_ON in FPU code 2006-12-07 02:14:01 +01:00
i8259.c x86_64: Move functions declarations to header file 2007-07-21 18:37:12 -07:00
init_task.c use the new percpu interface for shared data 2007-07-19 10:04:45 -07:00
io_apic.c x86_64: check remote IRR bit before migrating level triggered irq 2007-07-21 18:37:10 -07:00
ioport.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
irq.c x86_64 irq: use mask/unmask and proper locking in fixup_irqs() 2007-06-26 16:54:29 -07:00
k8.c Avoid zero size allocation in cache_k8_northbridges() 2007-05-23 20:14:12 -07:00
kprobes.c Kprobes: The ON/OFF knob thru debugfs 2007-05-08 11:15:19 -07:00
ldt.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
machine_kexec.c Revert "[PATCH] x86: __pa and __pa_symbol address space separation" 2007-05-07 08:44:24 -07:00
mce.c x86: round_jiffies() for i386 and x86-64 non-critical/corrected MCE polling 2007-07-21 18:37:10 -07:00
mce_amd.c x86_64: Fix APIC typo 2007-07-21 18:37:09 -07:00
mce_intel.c [PATCH] x86: Add a cumulative thermal throttle event counter. 2006-09-26 10:52:42 +02:00
module.c [PATCH] Generic BUG for x86-64 2006-12-08 08:28:39 -08:00
mpparse.c x86_64: remove unused variable maxcpus 2007-07-21 18:37:09 -07:00
nmi.c x86_64: speedup touch_nmi_watchdog 2007-07-17 10:23:04 -07:00
pci-calgary.c x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata 2007-07-21 18:37:14 -07:00
pci-dma.c x86_64: move iommu declaration from proto to iommu.h 2007-07-21 18:37:14 -07:00
pci-gart.c x86_64: move iommu declaration from proto to iommu.h 2007-07-21 18:37:14 -07:00
pci-nommu.c x86_64: move iommu declaration from proto to iommu.h 2007-07-21 18:37:14 -07:00
pci-swiotlb.c x86_64: move iommu declaration from proto to iommu.h 2007-07-21 18:37:14 -07:00
pmtimer.c [PATCH] time: x86_64: convert x86_64 to use GENERIC_TIME 2007-02-16 08:14:00 -08:00
process.c x86_64: lower printk severity 2007-07-21 18:37:12 -07:00
ptrace.c Handle bogus %cs selector in single-step instruction decoding 2007-07-18 12:09:01 -07:00
reboot.c x86_64: move iommu declaration from proto to iommu.h 2007-07-21 18:37:14 -07:00
relocate_kernel.S [PATCH] Avoid overwriting the current pgd (V4, x86_64) 2006-09-26 10:52:38 +02:00
setup.c i386: Add L3 cache support to AMD CPUID4 emulation 2007-07-21 18:37:08 -07:00
setup64.c x86_64: Ignore compat mode SYSCALL when IA32_EMULATION is not defined 2007-06-22 18:41:19 -07:00
signal.c x86: i386-show-unhandled-signals-v3 2007-07-22 11:03:37 -07:00
smp.c x86_64: Quicklist support for x86_64 2007-07-21 18:37:09 -07:00
smpboot.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
stacktrace.c simplify the stacktrace code 2007-05-08 11:14:58 -07:00
suspend.c [PATCH] x86: Save and restore the fixed-range MTRRs of the BSP when suspending 2007-05-02 19:27:17 +02:00
suspend_asm.S [PATCH] x86-64: Relocatable Kernel Support 2007-05-02 19:27:07 +02:00
sys_x86_64.c header cleaning: don't include smp_lock.h when not used 2007-05-08 11:15:07 -07:00
syscall.c [PATCH] x86-64: Auto compute __NR_syscall_max at compile time 2007-05-02 19:27:18 +02:00
tce.c x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata 2007-07-21 18:37:14 -07:00
time.c x86_64: use the global PIT lock 2007-07-21 18:37:12 -07:00
trampoline.S [PATCH] x86-64: Move cpu verification code to common file 2007-05-02 19:27:08 +02:00
traps.c x86: i386-show-unhandled-signals-v3 2007-07-22 11:03:37 -07:00
tsc.c x86_64: Remove dead code and other janitor work in tsc.c 2007-07-21 18:37:08 -07:00
tsc_sync.c [PATCH] x86: Log reason why TSC was marked unstable 2007-05-02 19:27:08 +02:00
verify_cpu.S Unify the CPU features vectors between i386 and x86-64 2007-07-12 10:55:54 -07:00
vmlinux.lds.S x86_64: remove __smp_alt* sections 2007-07-21 18:37:14 -07:00
vsmp.c [PATCH] Fix build breakage with CONFIG_X86_VSMP 2006-10-12 12:25:27 -07:00
vsyscall.c x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu 2007-07-21 18:37:08 -07:00
x8664_ksyms.c [PATCH] x86: Export _proxy_pda for gcc 4.2 2007-03-16 21:07:36 +01:00