Hans Rosenfeld f994d99cf1 x86-32, fpu: Fix FPU exception handling on non-SSE systems ... On 32bit systems without SSE (that is, they use FSAVE/FRSTOR for FPU context switches), FPU exceptions in user mode cause Oopses, BUGs, recursive faults and other nasty things: fpu exception: 0000 [#1] last sysfs file: /sys/power/state Modules linked in: psmouse evdev pcspkr serio_raw [last unloaded: scsi_wait_scan] Pid: 1638, comm: fxsave-32-excep Not tainted 2.6.35-07798-g58a992b-dirty #633 VP3-596B-DD/VT82C597 EIP: 0060:[<c1003527>] EFLAGS: 00010202 CPU: 0 EIP is at math_error+0x1b4/0x1c8 EAX: 00000003 EBX: cf9be7e0 ECX: 00000000 EDX: cf9c5c00 ESI: cf9d9fb4 EDI: c1372db3 EBP: 00000010 ESP: cf9d9f1c DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 Process fxsave-32-excep (pid: 1638, ti=cf9d8000 task=cf9be7e0 task.ti=cf9d8000) Stack: 00000000 00000301 00000004 00000000 00000000 cf9d3000 cf9da8f0 00000001 <0> 00000004 cf9b6b60 c1019a6b c1019a79 00000020 00000242 000001b6 cf9c5380 <0> cf806b40 cf791880 00000000 00000282 00000282 c108a213 00000020 cf9c5380 Call Trace: [<c1019a6b>] ? need_resched+0x11/0x1a [<c1019a79>] ? should_resched+0x5/0x1f [<c108a213>] ? do_sys_open+0xbd/0xc7 [<c108a213>] ? do_sys_open+0xbd/0xc7 [<c100353b>] ? do_coprocessor_error+0x0/0x11 [<c12d5965>] ? error_code+0x65/0x70 Code: a8 20 74 30 c7 44 24 0c 06 00 03 00 8d 54 24 04 89 d9 b8 08 00 00 00 e8 9b 6d 02 00 eb 16 8b 93 5c 02 00 00 eb 05 e9 04 ff ff ff <9b> dd 32 9b e9 16 ff ff ff 81 c4 84 00 00 00 5b 5e 5f 5d c3 c6 EIP: [<c1003527>] math_error+0x1b4/0x1c8 SS:ESP 0068:cf9d9f1c This usually continues in slight variations until the system is reset. This bug was introduced by commit 58a992b9cb: x86-32, fpu: Rewrite fpu_save_init() Signed-off-by: Hans Rosenfeld <hans.rosenfeld@amd.com> Link: http://lkml.kernel.org/r/1302106003-366952-1-git-send-email-hans.rosenfeld@amd.com Signed-off-by: H. Peter Anvin <hpa@zytor.com>		2011-04-06 16:53:01 -07:00
..
uv	x86, UV: Initialize the broadcast assist unit base destination node id properly	2011-03-09 16:36:16 +01:00
visws
xen	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
a.out-core.h
a.out.h
acpi.h	Merge branch 'linus' into release	2011-03-23 02:34:54 -04:00
aes.h
agp.h
alternative-asm.h
alternative.h	Merge branches 'x86-alternatives-for-linus', 'x86-fpu-for-linus', 'x86-hwmon-for-linus', 'x86-paravirt-for-linus', 'core-locking-for-linus' and 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-01-06 11:11:50 -08:00
amd_iommu.h	Merge branch 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 14:23:48 -07:00
amd_iommu_proto.h	x86/amd-iommu: Update copyright headers	2010-10-13 11:13:21 +02:00
amd_iommu_types.h	x86/amd-iommu: Update copyright headers	2010-10-13 11:13:21 +02:00
amd_nb.h	Merge branch 'linus' into x86/urgent	2011-03-18 10:39:00 +01:00
apb_timer.h	x86, cleanup: Remove obsolete boot_cpu_id variable	2010-08-12 14:01:38 -07:00
apic.h	x86: Stop including <linux/delay.h> in two asm header files	2011-03-29 09:37:42 +02:00
apicdef.h	x86: Move ioapic_irq_destination_types to apicdef.h	2011-02-23 11:38:44 +01:00
apm.h
arch_hweight.h
asm-offsets.h
asm.h
atomic.h
atomic64_32.h
atomic64_64.h
auxvec.h
bios_ebda.h
bitops.h	bitops: remove minix bitops from asm/bitops.h	2011-03-23 19:46:22 -07:00
bitsperlong.h
boot.h	x86: support XZ-compressed kernel	2011-01-13 08:03:25 -08:00
bootparam.h	x86: Add device tree support	2011-02-23 22:27:52 +01:00
bug.h
bugs.h
byteorder.h
cache.h
cacheflush.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
calgary.h	x86, iommu: Make all IOMMU's detection routines return a value.	2010-08-26 15:13:13 -07:00
calling.h	x86, asm: Fix CFI macro invocations to deal with shortcomings in gas	2010-10-19 14:28:02 -07:00
ce4100.h	x86: ce4100: Set pci ops via callback instead of module init	2011-03-14 15:13:23 +01:00
checksum.h
checksum_32.h
checksum_64.h
cmpxchg.h
cmpxchg_32.h
cmpxchg_64.h
compat.h	compat: Make compat_alloc_user_space() incorporate the access_ok()	2010-09-14 16:08:45 -07:00
cpu.h	x86: Fix mwait_usable section mismatch	2011-02-14 12:08:28 +01:00
cpufeature.h	perf, x86: Add support for AMD family 15h core counters	2011-02-16 13:30:53 +01:00
cpumask.h
cputime.h
current.h
debugreg.h	x86: Use this_cpu_ops to optimize code	2010-12-30 12:20:28 +01:00
delay.h
desc.h
desc_defs.h
device.h
div64.h
dma-mapping.h	dma-mapping: remove dma_is_consistent API	2010-08-11 08:59:21 -07:00
dma.h	x86: Stop including <linux/delay.h> in two asm header files	2011-03-29 09:37:42 +02:00
dmi.h
dwarf2.h	x86: Use {push,pop}{l,q}_cfi in more places	2010-09-03 08:14:11 +02:00
e820.h	x86: e820: Remove conditional early mapping in parse_e820_ext	2011-02-23 22:27:52 +01:00
edac.h
efi.h	x86, memblock: Replace e820_/_early string with memblock_	2010-08-27 11:13:47 -07:00
elf.h
emergency-restart.h
entry_arch.h	x86: Allocate 32 tlb_invalidate_interrupt handler stubs	2011-02-14 13:03:08 +01:00
errno.h
fb.h
fcntl.h
fixmap.h	x86: Fix Moorestown VRTC fixmap placement	2011-01-11 12:46:16 +01:00
floppy.h
frame.h	x86: Use {push,pop}_cfi in more places	2011-02-28 18:06:22 +01:00
ftrace.h
futex.h	futex: Sanitize futex ops argument types	2011-03-11 12:23:31 +01:00
gart.h	Merge branch 'x86-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-10-21 14:23:48 -07:00
genapic.h
geode.h
gpio.h	x86/gpio: Implement x86 gpio_to_irq convert function	2011-01-11 12:46:15 +01:00
hardirq.h	irq_work: Add generic hardirq context callbacks	2010-10-18 19:58:50 +02:00
highmem.h	mm: stack based kmap_atomic()	2010-10-26 16:52:08 -07:00
hpet.h	x86: ioapic/hpet: Convert to new chip functions	2010-10-12 16:53:37 +02:00
hugetlb.h
hw_breakpoint.h	x86: Fix instruction breakpoint encoding	2010-09-17 03:24:13 +02:00
hw_irq.h	x86: Allocate 32 tlb_invalidate_interrupt handler stubs	2011-02-14 13:03:08 +01:00
hypertransport.h
hyperv.h
hypervisor.h	xen: HVM X2APIC support	2011-01-07 10:03:50 -05:00
i387.h	x86-32, fpu: Fix FPU exception handling on non-SSE systems	2011-04-06 16:53:01 -07:00
i8253.h
i8259.h	x86: i8259: Convert to new irq_chip functions	2010-10-12 16:53:36 +02:00
ia32.h
ia32_unistd.h
idle.h
inat.h
inat_types.h
init.h	x86: Rename e820_table_* to pgt_buf_*	2011-02-24 14:52:18 +01:00
insn.h
inst.h
intel_scu_ipc.h
io.h	Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen	2010-10-28 17:11:17 -07:00
io_apic.h	x86: ioapic: Move trigger defines to io_apic.h	2011-02-23 19:58:09 +01:00
ioctl.h
ioctls.h
iomap.h	mm: stack based kmap_atomic()	2010-10-26 16:52:08 -07:00
iommu.h
iommu_table.h	x86, iommu: Update header comments with appropriate naming	2010-10-08 13:11:21 -07:00
ipcbuf.h
ipi.h	x86: Make default_send_IPI_mask_sequence/allbutself_logical() 32bit only	2011-01-28 14:54:05 +01:00
irq.h	x86: Add device tree support	2011-02-23 22:27:52 +01:00
irq_controller.h	x86: dtb: Add irq domain abstraction	2011-02-23 22:27:53 +01:00
irq_regs.h
irq_remapping.h	x86: Speed up the irq_remapped check in hot pathes	2010-10-12 16:53:42 +02:00
irq_vectors.h	x86: Work around old gas bug	2011-03-03 12:47:08 +01:00
irqflags.h	Fix IRQ flag handling naming	2010-10-07 14:08:55 +01:00
ist.h
jump_label.h	x86: Fix jump label with RO/NX module protection crash	2011-01-23 16:12:45 +01:00
Kbuild	archs: replace unifdef-y with header-y	2010-08-14 22:26:51 +02:00
kdebug.h	x86, dumpstack: Correct stack dump info when frame pointer is available	2011-03-18 10:51:42 +01:00
kexec.h
kgdb.h
kmap_types.h
kmemcheck.h
kprobes.h
kvm.h
kvm_emulate.h	KVM: emulator: Fix io permission checking for 64bit guest	2011-03-17 13:08:33 -03:00
kvm_host.h	KVM: MMU: cleanup pte write path	2011-03-17 13:08:35 -03:00
kvm_para.h	KVM: x86: Add missing inline tag to kvm_read_and_reset_pf_reason	2011-01-12 11:23:27 +02:00
ldt.h
lguest.h
lguest_hcall.h
linkage.h
local.h
local64.h
mach_timer.h
mach_traps.h	x86, NMI: Add NMI symbol constants and rename memory parity to PCI SERR	2011-01-07 15:08:51 +01:00
math_emu.h
mc146818rtc.h
mca.h
mca_dma.h
mce.h	x86, hwmon: Add core threshold notification to therm_throt.c	2011-01-03 08:30:30 -08:00
memblock.h	x86-32, memblock: Make add_highpages honor early reserved ranges	2010-10-05 21:44:35 -07:00
microcode.h	x86, microcode, AMD: Cleanup code a bit	2010-11-10 14:54:54 +01:00
mman.h
mmconfig.h
mmu.h	x86: add context tag to mark mm when running a task in 32-bit compatibility mode	2011-03-23 16:36:52 -04:00
mmu_context.h	x86, mm: avoid possible bogus tlb entries by clearing prev mm_cpumask after switching mm	2011-02-03 13:32:39 -08:00
mmx.h
mmzone.h
mmzone_32.h
mmzone_64.h
module.h
mpspec.h	x86: Unify cpu/apicid <-> NUMA node mapping between 32 and 64bit	2011-01-28 14:54:09 +01:00
mpspec_def.h	x86: Fix APIC ID sizing bug on larger systems, clean up MAX_APICS confusion	2011-01-05 14:09:23 +01:00
mrst-vrtc.h	x86: mrst: Add vrtc driver which serves as a wall clock device	2010-11-11 11:34:27 +01:00
mrst.h	x86: mrst: Add vrtc driver which serves as a wall clock device	2010-11-11 11:34:27 +01:00
msgbuf.h
mshyperv.h
msidef.h
msr-index.h	KVM: x86: handle guest access to BBL_CR_CTL3 MSR	2011-03-17 13:08:27 -03:00
msr.h
mtrr.h
mutex.h
mutex_32.h
mutex_64.h
mwait.h	x86, mwait: Move mwait constants to a common header file	2010-09-17 15:36:40 -07:00
nmi.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
nops.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
numa.h	x86-64, NUMA: Factor out memblk handling into numa_{add|register}_memblk()	2011-02-16 17:11:07 +01:00
numa_32.h	x86: Rename incorrectly named parameter of numa_cpu_node()	2011-01-31 18:22:25 +01:00
numa_64.h	x86-64, NUMA: Unify emulated distance mapping	2011-02-16 17:11:10 +01:00
numaq.h
olpc.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
olpc_ofw.h	x86: OLPC: Make OLPC=n build again	2011-02-23 11:54:02 +01:00
page.h	x86: Document __phys_reloc_hide() usage in __pa_symbol()	2010-08-11 08:43:49 +02:00
page_32.h
page_32_types.h
page_64.h
page_64_types.h
page_types.h	x86-64, NUMA: Revert NUMA affine page table allocation	2011-03-04 10:26:36 +01:00
param.h
paravirt.h	thp: fix PARAVIRT x86 32bit noPAE	2011-01-26 10:49:57 +10:00
paravirt_types.h	thp: add pmd paravirt ops	2011-01-13 17:32:39 -08:00
parport.h
pat.h
pci-direct.h
pci-functions.h
pci.h	x86: Add NX protection for kernel data	2010-11-18 12:52:04 +01:00
pci_64.h
pci_x86.h	x86/PCI: Clean up pci_cache_line_size	2010-10-18 10:49:30 -04:00
percpu.h	percpu: Omit segment prefix in the UP case for cmpxchg_double	2011-03-27 19:25:36 -07:00
perf_event.h	perf, arch: Cleanup perf-pmu init vs lockup-detector	2010-11-26 15:14:56 +01:00
perf_event_p4.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
pgalloc.h	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
pgtable-2level.h	thp: add x86 32bit support	2011-01-13 17:32:44 -08:00
pgtable-2level_types.h
pgtable-3level.h	x86: Flush TLB if PGD entry is changed in i386 PAE mode	2011-03-18 11:44:01 +01:00
pgtable-3level_types.h
pgtable.h	thp: don't allow transparent hugepage support without PSE	2011-01-13 17:32:45 -08:00
pgtable_32.h	mm: remove pte_*map_nested()	2010-10-26 16:52:08 -07:00
pgtable_32_types.h
pgtable_64.h	thp: add x86 32bit support	2011-01-13 17:32:44 -08:00
pgtable_64_types.h
pgtable_types.h	thp: add pmd_modify	2011-01-13 17:32:44 -08:00
poll.h
posix_types.h
posix_types_32.h
posix_types_64.h
prctl.h
processor-cyrix.h
processor-flags.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
processor.h	x86: Move llc_shared_map out of cpu_info	2011-01-26 08:44:49 +01:00
prom.h	x86: dt: Cleanup local apic setup	2011-02-25 16:18:52 +01:00
proto.h
ptrace-abi.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
ptrace.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
pvclock-abi.h
pvclock.h	x86/pvclock: Zero last_value on resume	2010-11-28 09:33:20 +01:00
reboot.h	x86, reboot: Move the real-mode reboot code to an assembly file	2011-02-17 21:05:34 -08:00
reboot_fixups.h
required-features.h
resource.h
resume-trace.h
rio.h
rtc.h
rwlock.h
rwsem.h	rwsem: Move duplicate function prototypes to linux/rwsem.h	2011-01-27 12:30:39 +01:00
scatterlist.h	remove needless ISA_DMA_THRESHOLD	2010-08-07 18:15:50 +02:00
seccomp.h
seccomp_32.h
seccomp_64.h
sections.h
segment.h	x86: Make the GDT_ENTRY() macro in <asm/segment.h> safe for assembly	2011-02-17 21:05:13 -08:00
sembuf.h
serial.h
setup.h	x86: Add CE4100 platform support	2010-11-12 00:45:41 +01:00
setup_arch.h
shmbuf.h
shmparam.h
sigcontext.h
sigcontext32.h
sigframe.h
siginfo.h
signal.h
smp.h	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2011-03-15 19:49:10 -07:00
smpboot_hooks.h	x86: Use u32 instead of long to set reset vector back to 0	2011-02-28 16:22:18 +01:00
socket.h
sockios.h
sparsemem.h
spinlock.h
spinlock_types.h
srat.h
stackprotector.h
stacktrace.h	x86, dumpstack: Correct stack dump info when frame pointer is available	2011-03-18 10:51:42 +01:00
stat.h
statfs.h
string.h
string_32.h
string_64.h
suspend.h
suspend_32.h
suspend_64.h
svm.h	KVM: SVM: copy instruction bytes from VMCB	2011-01-12 11:31:07 +02:00
swab.h
swiotlb.h	x86, swiotlb: Simplify SWIOTLB pci_swiotlb_detect routine.	2010-08-26 15:13:29 -07:00
sync_bitops.h
sys_ia32.h	Mark arguments to certain syscalls as being const	2010-08-13 16:53:13 -07:00
syscall.h
syscalls.h	Make do_execve() take a const filename pointer	2010-08-17 18:07:43 -07:00
system.h	x86, system.h: Drop unused __SAVE/__RESTORE macros	2011-02-20 13:38:47 +01:00
tce.h
termbits.h
termios.h
thread_info.h	mm: NUMA aware alloc_thread_info_node()	2011-03-22 17:44:01 -07:00
time.h
timer.h	x86, nmi_watchdog: Remove all stub function calls from old nmi_watchdog	2010-11-18 09:08:23 +01:00
timex.h
tlb.h
tlbflush.h	x86-32, mm: Add an initial page table for core bootstrapping	2010-10-20 14:23:55 -07:00
topology.h	x86-64, NUMA: Implement generic node distance handling	2011-02-16 17:11:09 +01:00
trampoline.h	x86, trampoline: Use the unified trampoline setup for ACPI wakeup	2011-02-17 21:05:06 -08:00
traps.h	KVM: Handle async PF in a guest.	2011-01-12 11:23:16 +02:00
tsc.h	x86: Fix common misspellings	2011-03-18 10:39:30 +01:00
types.h	remove dma64_addr_t	2011-03-23 19:47:18 -07:00
uaccess.h
uaccess_32.h
uaccess_64.h
ucontext.h
unaligned.h
unistd.h
unistd_32.h	introduce sys_syncfs to sync a single file system	2011-03-21 00:40:29 -04:00
unistd_64.h	introduce sys_syncfs to sync a single file system	2011-03-21 00:40:29 -04:00
user.h
user32.h
user_32.h
user_64.h
vdso.h
vga.h
vgtod.h
virtext.h
vm86.h
vmx.h	KVM: VMX: Add definitions for more vm entry/exit control bits	2011-01-12 11:31:08 +02:00
vsyscall.h
x86_init.h	x86/platform: Add a wallclock_init func to x86_init.timers ops	2011-02-14 18:20:43 +01:00
xcr.h
xor.h
xor_32.h
xor_64.h
xsave.h	Merge branch 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-08-06 16:25:13 -07:00