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| author | Mike Frysinger <vapier@gentoo.org> | 2016-01-18 06:32:30 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-24 10:18:21 -0700 |
| commit | c9bc125c922e855055cd08b2ec064180218be161 (patch) | |
| tree | d0755f0f542490a949a868a5207275641603c310 /arch/sparc/kernel/signal32.c | |
| parent | 2b11d80e1aa70b56c6431e4dc3c686ffc61a73bf (diff) | |
sparc: Fix system call tracing register handling.
[ Upstream commit 1a40b95374f680625318ab61d81958e949e0afe3 ]
A system call trace trigger on entry allows the tracing
process to inspect and potentially change the traced
process's registers.
Account for that by reloading the %g1 (syscall number)
and %i0-%i5 (syscall argument) values. We need to be
careful to revalidate the range of %g1, and reload the
system call table entry it corresponds to into %l7.
Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/sparc/kernel/signal32.c')
0 files changed, 0 insertions, 0 deletions