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| author |   Russell King <rmk+kernel@arm.linux.org.uk> | 2015-05-15 11:02:23 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-05-15 11:06:35 +0100 |
| commit | 1b97937246d8b97c0760d16d8992c7937bdf5e6a (patch) | |
| tree | c1a283d279d553bf0b1b975ee280efe202e0087a /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | ARM: 8356/1: mm: handle non-pmd-aligned end of RAM (diff) | |
| download | wireguard-linux-1b97937246d8b97c0760d16d8992c7937bdf5e6a.tar.xz wireguard-linux-1b97937246d8b97c0760d16d8992c7937bdf5e6a.zip | |
ARM: fix missing syscall trace exit
Josh Stone reports:
I've discovered a case where both arm and arm64 will miss a ptrace
syscall-exit that they should report. If the syscall is entered
without TIF_SYSCALL_TRACE set, then it goes on the fast path. It's
then possible to have TIF_SYSCALL_TRACE added in the middle of the
syscall, but ret_fast_syscall doesn't check this flag again.
Fix this by always checking for a syscall trace in the fast exit path.
Reported-by: Josh Stone <jistone@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions