mirror of
https://github.com/torvalds/linux.git
synced 2026-11-10 17:11:02 +01:00
3cbb16ccd7
When processing POLLHUP on a non_perf_event control descriptor,
evlist__finalize_ctlfd() is invoked to finalize the setup, correctly
setting the core evlist's poll array file descriptor to -1. However,
this finalized teardown state is never propagated back to the
individual thread's local replica of the pollfd array.
Consequently, on the next iteration of the main recording loop,
record__update_evlist_pollfd_from_thread() performs a strict
equivalence check between the core evlist's array and the thread's
localized poll array, detecting that the fd values no longer match.
This causes an immediate -EINVAL abort and a premature teardown.
Fix the underlying logic within
record__update_evlist_pollfd_from_thread() to sustainably propagate
the finalized teardown statuses (-1) originating from the core evlist
back to the thread's localized poll structure. This correctly
maintains synchronization and entirely prevents the unhandled
index mismatch crashes.
Additionally, add a unit test that explicitly validates that
fdarray__filter() preserves its invariants regarding
fdarray_flag__nonfilterable items to guard against regressions.
Fixes:
|
||
|---|---|---|
| .. | ||
| fd | ||
| fs | ||
| Build | ||
| cpu.c | ||
| cpu.h | ||
| debug-internal.h | ||
| debug.c | ||
| debug.h | ||
| io_dir.h | ||
| io.h | ||
| Makefile | ||