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| author | Richard Weinberger <richard@nod.at> | 2015-05-31 20:59:03 (GMT) |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2015-05-31 20:59:03 (GMT) |
| commit | 5334cdae407a5778a297a98a75ca61140e37ebfa (patch) | |
| tree | 8b1c4aaad459fa26fb13b5ef4244d986c831048d /arch/um/kernel/skas | |
| parent | 30b11ee9ae23d78de66b9ae315880af17a64ba83 (diff) | |
| download | linux-5334cdae407a5778a297a98a75ca61140e37ebfa.tar.xz | |
um: Handle tracehook_report_syscall_entry() result
tracehook_report_syscall_entry() is allowed to fail,
in case of failure we have to abort the current syscall.
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/kernel/skas')
| -rw-r--r-- | arch/um/kernel/skas/syscall.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c index c0681e0..d9ec006 100644 --- a/arch/um/kernel/skas/syscall.c +++ b/arch/um/kernel/skas/syscall.c @@ -18,7 +18,10 @@ void handle_syscall(struct uml_pt_regs *r) long result; int syscall; - syscall_trace_enter(regs); + if (syscall_trace_enter(regs)) { + result = -ENOSYS; + goto out; + } /* * This should go in the declaration of syscall, but when I do that, @@ -34,6 +37,7 @@ void handle_syscall(struct uml_pt_regs *r) result = -ENOSYS; else result = EXECUTE_SYSCALL(syscall, regs); +out: PT_REGS_SET_SYSCALL_RETURN(regs, result); syscall_trace_leave(regs); |