tracing: Fix filtering on string pointers
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- v1 Latest2 patches 4 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | tracing: Have syscall trace events use trace_event_buffer_lock_reserve()kernel/ | +2 | 1 reply | |
| 2/2 | tracing: Add test for user space strings when filtering on string pointerskernel/ | +77 | 3 replies |
Reviews trailers per patch
1 of 2 patches has a Reviewed-by or Acked-by.
| Patch | Masami Hiramatsu |
|---|---|
| 1/2 | R-b |
| 2/2 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/2] tracing: Fix filtering on string pointers
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
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kernel/trace/trace_events_filter.c | 79 +++++++++++++++++++++++++++++++++++++- kernel/trace/trace_syscalls.c | 6 +-- 2 files changed, 79 insertions(+), 6 deletions(-)