The branch main has been updated by adrian: URL: https://cgit.FreeBSD.org/src/commit/?id=5078280bb42c00eecffeabf93706c145e87b4b2b
commit 5078280bb42c00eecffeabf93706c145e87b4b2b Author: Abdelkader Boudih <[email protected]> AuthorDate: 2026-08-03 18:11:49 +0000 Commit: Adrian Chadd <[email protected]> CommitDate: 2026-08-03 18:11:56 +0000 kqueue: fix the always-empty NT_PROCSTAT_KQUEUES core note sbuf reserves a byte of its buffer for the terminator, so the sbuf created with maxlen held one byte less than the sizing pass had computed. The last record overflowed it, sbuf_bcat() failed, and the error == 0 guard skipped the copy into the caller's sbuf, so the note has been emitted at full size but zero filled since 5e7c43ff02dc. Fixes: 5e7c43ff02dc Reviewed by: adrian, markj Differential Revision: https://reviews.freebsd.org/D58583 MFC after: 1 week --- sys/kern/kern_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/kern/kern_event.c b/sys/kern/kern_event.c index e8395707a29d..31dab74bd7bd 100644 --- a/sys/kern/kern_event.c +++ b/sys/kern/kern_event.c @@ -3366,7 +3366,7 @@ kern_proc_kqueues_out(struct proc *p, struct sbuf *sb, size_t maxlen, sb_len = 128; else sb_len = maxlen; - s = sbuf_new(&sm, NULL, sb_len, SBUF_FIXEDLEN); + s = sbuf_new(&sm, NULL, sb_len + 1, SBUF_FIXEDLEN); error = kern_proc_kqueues_out1(curthread, p, s, compat32); sbuf_finish(s); if (error == 0)
