[PATCH 0/5] Reintroduce writev(3p) · Patrick Steinhardt <hidden> · 2026-07-16
[PATCH 1/5] compat/posix: introduce writev(3p) wrapper · Patrick Steinhardt <hidden> · 2026-07-16
Re: [PATCH 1/5] compat/posix: introduce writev(3p) wrapper · Simon Richter <hidden> · 2026-07-16
Re: [PATCH 1/5] compat/posix: introduce writev(3p) wrapper · Junio C Hamano <hidden> · 2026-07-16
Re: [PATCH 1/5] compat/posix: introduce writev(3p) wrapper · Junio C Hamano <hidden> · 2026-07-16
[PATCH 2/5] wrapper: introduce writev(3p) wrappers · Patrick Steinhardt <hidden> · 2026-07-16
[PATCH 3/5] wrapper: properly handle MAX_IO_SIZE in writev(3p) · Patrick Steinhardt <hidden> · 2026-07-16
[PATCH 4/5] sideband: use writev(3p) to send pktlines · Patrick Steinhardt <hidden> · 2026-07-16
[PATCH 5/5] fast-import: use writev(3p) to send cat-blob responses · Patrick Steinhardt <hidden> · 2026-07-16
Re: [PATCH 0/5] Reintroduce writev(3p) · Johannes Sixt <hidden> · 2026-07-16

Re: [PATCH 1/5] compat/posix: introduce writev(3p) wrapper

From: Simon Richter <hidden>
Date: 2026-07-16 08:47:40

Hi,

+		if (iov[i].iov_len > maximum_signed_value_of_type(ssize_t) ||
+		    iov[i].iov_len + sum > maximum_signed_value_of_type(ssize_t)) {

That feels like it could overflow.

    Simon