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Will Deacon 42309ab450 ARM: 8087/1: ptrace: reload syscall number after secure_computing() check 
On the syscall tracing path, we call out to secure_computing() to allow
seccomp to check the syscall number being attempted. As part of this, a
SIGTRAP may be sent to the tracer and the syscall could be re-written by
a subsequent SET_SYSCALL ptrace request. Unfortunately, this new syscall
is ignored by the current code unless TIF_SYSCALL_TRACE is also set on
the current thread.

This patch slightly reworks the enter path of the syscall tracing code
so that we always reload the syscall number from
current_thread_info()->syscall after the potential ptrace traps.

Acked-by: Kees Cook <keescook@chromium.org>
Tested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-06-29 10:29:35 +01:00
..
.gitignore
…
arch_timer.c
arch_timer: Move to generic sched_clock framework
2013-10-09 16:54:10 -07:00
armksyms.c
ARM: Better virt_to_page() handling
2014-04-03 22:46:34 +01:00
arthur.c
…
asm-offsets.c
ARM: KVM: introduce per-vcpu HYP Configuration Register
2014-03-03 01:15:23 +00:00
atags_compat.c
…
atags_parse.c
ARM: 8025/1: Get rid of meminfo
2014-06-01 01:17:12 +01:00
atags_proc.c
procfs: new helper - PDE_DATA(inode)
2013-04-09 14:13:32 -04:00
atags.h
ARM: constify machine_desc structure uses
2013-07-26 14:55:59 +01:00
bios32.c
ARM/PCI: Call pcie_bus_configure_settings() to set MPS
2014-05-30 10:50:57 -06:00
calls.S
ARM: add renameat2 syscall
2014-04-23 11:27:42 +01:00
cpuidle.c
…
crash_dump.c
ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr
2014-04-07 12:10:00 +01:00
debug.S
ARM: compile fix for DEBUG_LL=y && MMU=n
2013-01-16 14:30:06 -08:00
devtree.c
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into next
2014-06-05 15:57:04 -07:00
dma-isa.c
…
dma.c
…
early_printk.c
early_printk: consolidate random copies of identical code
2013-04-29 18:28:13 -07:00
elf.c
…
entry-armv.S
Merge branches 'alignment', 'fixes', 'l2c' (early part) and 'misc' into for-next
2014-06-05 12:35:52 +01:00
entry-common.S
ARM: consolidate last remaining open-coded alignment trap enable
2014-06-02 09:20:20 +01:00
entry-header.S
Merge branches 'alignment', 'fixes', 'l2c' (early part) and 'misc' into for-next
2014-06-05 12:35:52 +01:00
entry-v7m.S
ARM: 7890/1: v7-M: drop using mach/entry-macro.S
2013-12-29 12:32:32 +00:00
etm.c
ARM: 7905/1: etm: Remove unnecessary amba_set_drvdata()
2013-12-29 12:32:34 +00:00
fiq.c
ARM: 7819/1: fiq: Cast the first argument of flush_icache_range()
2013-08-20 00:11:50 +01:00
fiqasm.S
…
ftrace.c
ARM: 8022/1: ftrace: work with CONFIG_DEBUG_SET_MODULE_RONX
2014-04-23 01:24:31 +01:00
head-common.S
ARM: remove global cr_no_alignment
2014-06-02 09:20:18 +01:00
head-nommu.S
ARM: fix asm/memory.h build error
2013-12-13 20:25:30 +00:00
head.S
Merge branches 'alignment', 'fixes', 'l2c' (early part) and 'misc' into for-next
2014-06-05 12:35:52 +01:00
hibernate.c
ARM: 8011/1: ARM hibernation / suspend-to-disk
2014-04-23 01:24:14 +01:00
hw_breakpoint.c
CPU hotplug notifiers registration fixes for 3.15-rc1
2014-04-07 14:55:46 -07:00
hyp-stub.S
ARM: 7786/1: hyp: fix macro parameterisation
2013-07-22 14:30:34 +01:00
insn.c
…
insn.h
…
io.c
ARM: 7930/1: Introduce atomic MMIO modify
2014-01-28 14:06:25 +00:00
irq.c
ARM: l2c: add platform independent core L2 cache OF initialisation
2014-05-30 00:49:00 +01:00
isa.c
arm: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:15 -07:00
iwmmxt.S
Merge branches 'alignment', 'fixes', 'l2c' (early part) and 'misc' into for-next
2014-06-05 12:35:52 +01:00
jump_label.c
…
kgdb.c
…
kprobes-arm.c
ARM: Make arch_specific_insn a define for new arch_probes_insn structure
2014-03-18 16:39:40 -04:00
kprobes-common.c
ARM: probes: fix instruction fetch order with <asm/opcodes.h>
2014-04-01 16:45:19 +03:00
kprobes-test-arm.c
ARM: kprobes-test: use <asm/opcodes.h> for ARM instruction building
2014-04-01 16:48:24 +03:00
kprobes-test-thumb.c
ARM: kprobes-test: use <asm/opcodes.h> for Thumb instruction building
2014-04-01 16:48:26 +03:00
kprobes-test.c
ARM: kprobes-test: Workaround GAS .align bug
2014-04-01 16:48:27 +03:00
kprobes-test.h
ARM: kprobes-test: Workaround GAS .align bug
2014-04-01 16:48:27 +03:00
kprobes-thumb.c
ARM: probes: fix instruction fetch order with <asm/opcodes.h>
2014-04-01 16:45:19 +03:00
kprobes.c
ARM: probes: fix instruction fetch order with <asm/opcodes.h>
2014-04-01 16:45:19 +03:00
kprobes.h
ARM: Make arch_specific_insn a define for new arch_probes_insn structure
2014-03-18 16:39:40 -04:00
machine_kexec.c
ARM: 8030/1: ARM : kdump : add arch_crash_save_vmcoreinfo
2014-04-22 22:23:58 +01:00
Makefile
Merge branches 'alignment', 'fixes', 'l2c' (early part) and 'misc' into for-next
2014-06-05 12:35:52 +01:00
module.c
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2013-11-14 08:51:29 +09:00
opcodes.c
…
patch.c
…
patch.h
…
perf_event_cpu.c
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-06-12 19:18:49 -07:00
perf_event_v6.c
ARM: perf: don't pretend to support counting of L1I writes
2013-01-16 12:01:59 +00:00
perf_event_v7.c
ARM: perf: fix compiler warning with gcc 4.6.4 (and tidy code)
2014-06-19 11:29:39 +01:00
perf_event_xscale.c
ARM: perf: don't pretend to support counting of L1I writes
2013-01-16 12:01:59 +00:00
perf_event.c
perf/ARM: Use common PMU interrupt disabled code
2014-06-05 12:30:00 +02:00
perf_regs.c
ARM: perf: add support for perf registers API
2013-09-30 16:41:50 +01:00
pj4-cp0.c
ARM: 8040/1: pj4: properly detect existence of iWMMXt coprocessor
2014-04-25 12:07:34 +01:00
probes-arm.c
ARM: Make arch_specific_insn a define for new arch_probes_insn structure
2014-03-18 16:39:40 -04:00
probes-arm.h
ARM: Make arch_specific_insn a define for new arch_probes_insn structure
2014-03-18 16:39:40 -04:00
probes-thumb.c
ARM: Make arch_specific_insn a define for new arch_probes_insn structure
2014-03-18 16:39:40 -04:00
probes-thumb.h
ARM: Make arch_specific_insn a define for new arch_probes_insn structure
2014-03-18 16:39:40 -04:00
probes.c
ARM: probes: fix instruction fetch order with <asm/opcodes.h>
2014-04-01 16:45:19 +03:00
probes.h
ARM: Make arch_specific_insn a define for new arch_probes_insn structure
2014-03-18 16:39:40 -04:00
process.c
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
2014-04-11 11:56:40 -07:00
psci_smp.c
ARM: Check if a CPU has gone offline
2014-05-15 10:16:30 -04:00
psci.c
PSCI: Add initial support for PSCIv0.2 functions
2014-05-15 10:16:00 -04:00
ptrace.c
ARM: 8087/1: ptrace: reload syscall number after secure_computing() check
2014-06-29 10:29:35 +01:00
relocate_kernel.S
ARM: 7897/1: kexec: Use the right ISA for relocate_new_kernel
2013-11-30 22:21:02 +00:00
return_address.c
ARM: 7676/1: fix a wrong value returned from CALLER_ADDRn
2013-03-19 11:43:46 +00:00
setup.c
Merge branches 'alignment', 'fixes', 'l2c' (early part) and 'misc' into for-next
2014-06-05 12:35:52 +01:00
signal.c
ARM: add uprobes support
2014-03-18 16:39:40 -04:00
sigreturn_codes.S
ARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S
2013-11-30 22:21:00 +00:00
sleep.S
ARM: 8053/1: kernel: sleep: restore HYP mode configuration in cpu_resume
2014-05-25 23:49:27 +01:00
smp_scu.c
ARM: smp_scu: data endian fixes
2013-10-19 20:46:33 +01:00
smp_tlb.c
ARM: 7855/1: Add check for Cortex-A15 errata 798181 ECO
2013-10-29 11:06:13 +00:00
smp_twd.c
cpufreq: remove unused notifier: CPUFREQ_{SUSPENDCHANGE|RESUMECHANGE}
2014-03-19 14:10:24 +01:00
smp.c
cpufreq: remove unused notifier: CPUFREQ_{SUSPENDCHANGE|RESUMECHANGE}
2014-03-19 14:10:24 +01:00
stacktrace.c
ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation
2014-05-30 01:12:32 +01:00
suspend.c
ARM: suspend: use hash of cpu_logical_map value to index into save array
2013-07-30 09:00:43 -04:00
swp_emulate.c
arm: single_open() leaks
2013-05-05 00:07:22 -04:00
sys_arm.c
arm: switch to generic fork/vfork/clone
2012-11-28 22:13:54 -05:00
sys_oabi-compat.c
locks: rename file-private locks to "open file description locks"
2014-04-22 08:23:58 -04:00
tcm.c
ARM: add permission annotations to MT_MEMORY* mapping types
2013-12-11 09:53:14 +00:00
thumbee.c
…
time.c
ARM: call of_clk_init from default time_init handler
2013-09-29 21:09:15 +02:00
topology.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-06-12 19:42:15 -07:00
traps.c
Dump the registers on undefined instruction userspace faults
2014-04-11 14:48:39 +01:00
unwind.c
arm, unwind, LLVMLinux: Enable clang to be used for unwinding the stack
2014-06-07 11:44:39 -07:00
uprobes-arm.c
ARM: add uprobes support
2014-03-18 16:39:40 -04:00
uprobes.c
ARM: 8043/1: uprobes need icache flush after xol write
2014-05-25 23:48:45 +01:00
uprobes.h
ARM: add uprobes support
2014-03-18 16:39:40 -04:00
v7m.c
ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines
2013-09-02 13:49:29 +01:00
vmlinux.lds.S
ARM: use linker magic for vectors and vector stubs
2013-07-31 21:34:24 +01:00
xscale-cp0.c
…