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authorWill Deacon <will.deacon@arm.com>2014-06-27 17:01:47 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-06-29 10:29:35 +0100
commit42309ab450b608ddcfafa90e4cfa93a5001ecfba (patch)
treefb60021f23adfdff7d525d88e8b6c50f14f138f0 /arch/sparc/include/asm/tlb_64.h
parent6980c3e2514e5ae36b43ec8302f4920d6e3c9434 (diff)
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>
Diffstat (limited to 'arch/sparc/include/asm/tlb_64.h')
0 files changed, 0 insertions, 0 deletions