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authorBjoern A. Zeeb <bz@FreeBSD.org>2026-03-18 14:43:15 +0000
committerBjoern A. Zeeb <bz@FreeBSD.org>2026-03-21 21:16:43 +0000
commit2ce06d25431a6c96ef5719165cb73e138a0ed89c (patch)
tree084049acab206131f91243e21b44e850f5af0e93
parent118699732de1ec99b06d5d73ee61b1b74842c1de (diff)
sbuf: make assertion message a lot more useable
Saying that we are called with an (un)finished or corrupted sbuf is like saying "error" (though [un]finished is an extra hint). Add the pointer to the sbuf so one could easily check it, add the flags we are checking so one could see quickly about a possible state mismatch. Given we already dereference the pointer in the KASSERT there is no extra harm adding it to the message. Found while: testing lindebugfs changes Sponsored by: The FreeBSD Foundation MFC after: 3 days Reviewed by: jhb Differential Revision: https://reviews.freebsd.org/D55919
-rw-r--r--sys/kern/subr_sbuf.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/kern/subr_sbuf.c b/sys/kern/subr_sbuf.c
index 27e18c114afd..c5673e871df4 100644
--- a/sys/kern/subr_sbuf.c
+++ b/sys/kern/subr_sbuf.c
@@ -124,8 +124,8 @@ _assert_sbuf_state(const char *fun, struct sbuf *s, int state)
{
KASSERT((s->s_flags & SBUF_FINISHED) == state,
- ("%s called with %sfinished or corrupt sbuf", fun,
- (state ? "un" : "")));
+ ("%s called with %sfinished or corrupt sbuf %p { s_flags %#010x }, "
+ "state %#010x", fun, (state ? "un" : ""), s, s->s_flags, state));
}
#define assert_sbuf_integrity(s) _assert_sbuf_integrity(__func__, (s))