mirror of
https://github.com/torvalds/linux.git
synced 2024-09-20 23:13:00 +00:00
793c2579be
Currently kcsan_report() is used to handle three distinct cases: * The caller hit a watchpoint when attempting an access. Some information regarding the caller and access are recorded, but no output is produced. * A caller which previously setup a watchpoint detected that the watchpoint has been hit, and possibly detected a change to the location in memory being watched. This may result in output reporting the interaction between this caller and the caller which hit the watchpoint. * A caller detected a change to a modification to a memory location which wasn't detected by a watchpoint, for which there is no information on the other thread. This may result in output reporting the unexpected change. ... depending on the specific case the caller has distinct pieces of information available, but the prototype of kcsan_report() has to handle all three cases. This means that in some cases we pass redundant information, and in others we don't pass all the information we could pass. This also means that the report code has to demux these three cases. So that we can pass some additional information while also simplifying the callers and report code, add separate kcsan_report_*() functions for the distinct cases, updating callers accordingly. As the watchpoint_idx is unused in the case of kcsan_report_unknown_origin(), this passes a dummy value into kcsan_report(). Subsequent patches will refactor the report code to avoid this. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> [ elver@google.com: try to make kcsan_report_*() names more descriptive ] Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
||
|---|---|---|
| .. | ||
| atomic.h | ||
| core.c | ||
| debugfs.c | ||
| encoding.h | ||
| kcsan_test.c | ||
| kcsan.h | ||
| Makefile | ||
| report.c | ||
| selftest.c | ||