Messages in this thread | | | Date | Fri, 07 Jan 2022 17:56:55 -0500 | From | Steven Rostedt <> | Subject | [PATCH 0/2] tracing: Fix filtering on string pointers |
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If filtering on an event's string pointer that happens to point into user space, then the pointer could cause a page fault and crash the kernel.
Also, have system call events use the temp buffer when filtering.
Steven Rostedt (2): tracing: Have syscall trace events use trace_event_buffer_lock_reserve() tracing: Add test for user space strings when filtering on string pointers
---- kernel/trace/trace_events_filter.c | 79 +++++++++++++++++++++++++++++++++++++- kernel/trace/trace_syscalls.c | 6 +-- 2 files changed, 79 insertions(+), 6 deletions(-)
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