lwn.git/arch/um/kernel/skas, branch docs-4.16

um: switch to RAW_COPY_USER

2017-03-28T22:24:03+00:00

Signed-off-by: Al Viro

new helper: uaccess_kernel()

2017-03-28T20:43:25+00:00

Signed-off-by: Al Viro

sched/headers: Prepare to move 'init_task' and 'init_thread_union' from to

2017-03-02T07:42:38+00:00

Update all usage sites first. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

sched/headers: Prepare to remove the dependency from

2017-03-02T07:42:37+00:00

Update code that relied on sched.h including various MM types for them. This will allow us to remove the include from . Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

sched/headers: Prepare for new header dependencies before moving code to

2017-03-02T07:42:36+00:00

We are going to split out of , which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder file that just maps to to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

sched/headers: Prepare for new header dependencies before moving code to

2017-03-02T07:42:29+00:00

um/ptrace: Fix the syscall number update after a ptrace

2016-09-07T16:25:04+00:00

Update the syscall number after each PTRACE_SETREGS on ORIG_*AX. This is needed to get the potentially altered syscall number in the seccomp filters after RET_TRACE. This fix four seccomp_bpf tests: > [ RUN ] TRACE_syscall.skip_after_RET_TRACE > seccomp_bpf.c:1560:TRACE_syscall.skip_after_RET_TRACE:Expected -1 (18446744073709551615) == syscall(39) (26) > seccomp_bpf.c:1561:TRACE_syscall.skip_after_RET_TRACE:Expected 1 (1) == (*__errno_location ()) (22) > [ FAIL ] TRACE_syscall.skip_after_RET_TRACE > [ RUN ] TRACE_syscall.kill_after_RET_TRACE > TRACE_syscall.kill_after_RET_TRACE: Test exited normally instead of by signal (code: 1) > [ FAIL ] TRACE_syscall.kill_after_RET_TRACE > [ RUN ] TRACE_syscall.skip_after_ptrace > seccomp_bpf.c:1622:TRACE_syscall.skip_after_ptrace:Expected -1 (18446744073709551615) == syscall(39) (26) > seccomp_bpf.c:1623:TRACE_syscall.skip_after_ptrace:Expected 1 (1) == (*__errno_location ()) (22) > [ FAIL ] TRACE_syscall.skip_after_ptrace > [ RUN ] TRACE_syscall.kill_after_ptrace > TRACE_syscall.kill_after_ptrace: Test exited normally instead of by signal (code: 1) > [ FAIL ] TRACE_syscall.kill_after_ptrace Fixes: 26703c636c1f ("um/ptrace: run seccomp after ptrace") Signed-off-by: Mickaël Salaün Acked-by: Kees Cook Cc: Jeff Dike Cc: Richard Weinberger Cc: James Morris Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: James Morris Signed-off-by: Kees Cook

um/ptrace: Fix the syscall_trace_leave call

2016-09-07T16:25:04+00:00

Keep the same semantic as before the commit 26703c636c1f: deallocate audit context and fake a proper syscall exit. This fix a kernel panic triggered by the seccomp_bpf test: > [ RUN ] global.ERRNO_valid > BUG: failure at kernel/auditsc.c:1504/__audit_syscall_entry()! > Kernel panic - not syncing: BUG! Fixes: 26703c636c1f ("um/ptrace: run seccomp after ptrace") Signed-off-by: Mickaël Salaün Acked-by: Kees Cook Cc: Jeff Dike Cc: Richard Weinberger Cc: James Morris Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: James Morris Signed-off-by: Kees Cook

um/ptrace: run seccomp after ptrace

2016-06-14T17:54:47+00:00

Close the hole where ptrace can change a syscall out from under seccomp. Signed-off-by: Kees Cook Cc: Jeff Dike Cc: Richard Weinberger Cc: user-mode-linux-devel@lists.sourceforge.net

seccomp: Add a seccomp_data parameter secure_computing()

2016-06-14T17:54:39+00:00

Currently, if arch code wants to supply seccomp_data directly to seccomp (which is generally much faster than having seccomp do it using the syscall_get_xyz() API), it has to use the two-phase seccomp hooks. Add it to the easy hooks, too. Cc: linux-arch@vger.kernel.org Signed-off-by: Andy Lutomirski Signed-off-by: Kees Cook