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linux/arch/x86_64/kernel
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Roland McGrath 0928d6ef7f [PATCH] x86_64: never block forced SIGSEGV 
This is the x86_64 version of the signal fix I just posted for i386.

This problem was first noticed on PPC and has already been fixed there.
But the exact same issue applies to other platforms in the same way.  The
signal blocking for sa_mask and the handled signal takes place after the
handler setup.  When the stack is bogus, the handler setup forces a
SIGSEGV.  But then this will be blocked, and returning to user mode will
fault again and iterate.  This patch fixes the problem by checking whether
signal handler setup failed, and not doing the signal-blocking if so.  This
copies what was done in the ppc code.  I think all architectures' signal
handler setup code follows this pattern and needs the change.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-23 09:45:13 -07:00
..
acpi Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpufreq Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
aperture.c [PATCH] remove direct ref to contig_page_data for x86-64 2005-06-23 09:45:06 -07:00
apic.c [PATCH] x86_64: Collected NMI watchdog fixes. 2005-05-17 07:59:16 -07:00
asm-offsets.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
e820.c [PATCH] x86-64: Handle empty E820 regions correctly 2005-05-01 08:58:52 -07:00
early_printk.c [PATCH] allow early printk to use more than 25 lines 2005-06-23 09:45:10 -07:00
entry.S [PATCH] x86_64: Readd missing tests in entry.S 2005-05-17 07:59:13 -07:00
genapic.c [PATCH] x86_64 genapic update 2005-04-16 15:24:53 -07:00
genapic_cluster.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
genapic_flat.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
head.S [PATCH] x86_64: Dump stack and prevent recursion on early fault 2005-04-16 15:25:00 -07:00
head64.c [PATCH] reorganize x86-64 NUMA and DISCONTIGMEM config options 2005-06-23 09:45:06 -07:00
i387.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
i8259.c [PATCH] x86_64: i8259.c iso99 structure initialization 2005-06-23 09:45:12 -07:00
init_task.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
io_apic.c [PATCH] x86_64: More fixes for compilation without CONFIG_ACPI 2005-05-31 14:54:17 -07:00
ioport.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kprobes.c [PATCH] Kprobes: Incorrect handling of probes on ret/lret instruction 2005-05-05 16:36:39 -07:00
ldt.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] x86_64: Add pmtimer support 2005-05-17 07:59:15 -07:00
mce.c [PATCH] x86_64: Remove excessive stack allocation in MCE code with large NR_CPUS 2005-04-16 15:25:10 -07:00
mce_intel.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.c [PATCH] uml: kludgy compilation fixes for x86-64 subarch modules support 2005-05-05 16:36:33 -07:00
mpparse.c [PATCH] x86/x86_64: pcibus_to_node 2005-06-23 09:45:08 -07:00
msr.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
nmi.c [PATCH] x86_64: Collected NMI watchdog fixes. 2005-05-17 07:59:16 -07:00
pci-dma.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci-gart.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci-nommu.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pmtimer.c [PATCH] x86_64: Add pmtimer support 2005-05-17 07:59:15 -07:00
process.c [PATCH] x86_64: TASK_SIZE fixes for compatibility mode processes 2005-06-21 18:46:12 -07:00
ptrace.c [PATCH] x86_64: TASK_SIZE fixes for compatibility mode processes 2005-06-21 18:46:12 -07:00
reboot.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.c [PATCH] add x86-64 specific support for sparsemem 2005-06-23 09:45:07 -07:00
setup64.c [PATCH] Increase number of e820 entries hard limit from 32 to 128 2005-05-01 08:58:51 -07:00
signal.c [PATCH] x86_64: never block forced SIGSEGV 2005-06-23 09:45:13 -07:00
smp.c [PATCH] x86_64: Switch SMP bootup over to new CPU hotplug state machine 2005-04-16 15:25:19 -07:00
smpboot.c [PATCH] x86_64: i386/x86-64: Export cpu_core_map 2005-05-20 15:48:21 -07:00
suspend.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
suspend_asm.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys_x86_64.c [PATCH] Avoiding mmap fragmentation 2005-06-21 18:46:16 -07:00
syscall.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
time.c [PATCH] x86_64: fix hpet for systems that don't support legacy replacement 2005-06-23 09:45:12 -07:00
trampoline.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
traps.c [PATCH] x86_64: CONFIG_BUG=n fixes 2005-05-25 15:31:28 -07:00
vmlinux.lds.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
vsyscall.c [PATCH] x86_64: Make vsyscall.c compile without CONFIG_SYSCTL 2005-05-17 07:59:16 -07:00
x8664_ksyms.c [PATCH] x86_64: CONFIG_BUG=n fixes 2005-05-25 15:31:28 -07:00