Messages in this thread | | | Date | Sat, 31 Oct 2020 09:06:42 -0400 | From | Steven Rostedt <> | Subject | [for-linus][PATCH 0/3] tracing/ftrace: trace_printk buffer fix and ftrace recursion fixes |
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The indexing of the different context buffers had an off by one error.
The recursion protection for ftrace callbacks had two bugs. One that would make NMIs always appear to be recursing The other is trasitions between interrupt context could also cause false positives and miss tracing those functions.
Qiujun Huang (1): tracing: Fix out of bounds write in get_trace_buf
Steven Rostedt (VMware) (2): ftrace: Fix recursion check for NMI test ftrace: Handle tracing when switching between context
---- kernel/trace/trace.c | 2 +- kernel/trace/trace.h | 26 +++++++++++++++++++++++--- kernel/trace/trace_selftest.c | 9 +++++++-- 3 files changed, 31 insertions(+), 6 deletions(-)
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