git: dc7526170d4c - main - posixshm: Report output buffer truncation from kern.ipc.posix_shm_list

From: Mark Johnston <markj_at_FreeBSD.org>
Date: Mon, 17 Jan 2022 13:35:43 UTC
The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=dc7526170d4cc62f35bafb25dd026399c612ed5b

commit dc7526170d4cc62f35bafb25dd026399c612ed5b
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2022-01-17 13:33:05 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2022-01-17 13:35:19 +0000

    posixshm: Report output buffer truncation from kern.ipc.posix_shm_list
    
    PR:             240573
    Reviewed by:    kib
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D33912
---
 sys/kern/uipc_shm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/sys/kern/uipc_shm.c b/sys/kern/uipc_shm.c
index 6fb083498e18..04c2c65af02e 100644
--- a/sys/kern/uipc_shm.c
+++ b/sys/kern/uipc_shm.c
@@ -2052,9 +2052,6 @@ sysctl_posix_shm_list(SYSCTL_HANDLER_ARGS)
 			if (error != 0)
 				break;
 			pack_kinfo(&kif);
-			if (req->oldptr != NULL &&
-			    kif.kf_structsize + curlen > req->oldlen)
-				break;
 			error = sbuf_bcat(&sb, &kif, kif.kf_structsize) == 0 ?
 			    0 : ENOMEM;
 			if (error != 0)