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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:
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|---|---|---|
| .. | ||
| api | ||
| bpf | ||
| perf | ||
| python | ||
| subcmd | ||
| symbol | ||
| thermal | ||
| argv_split.c | ||
| bitmap.c | ||
| cmdline.c | ||
| ctype.c | ||
| find_bit.c | ||
| hweight.c | ||
| list_sort.c | ||
| rbtree.c | ||
| slab.c | ||
| str_error_r.c | ||
| string.c | ||
| vsprintf.c | ||
| zalloc.c | ||