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NAS-142228 / 27.0.0-BETA.1 / sunrpc: treat empty auth.unix.gid replies as negative entries #337

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Merged
ixhamza merged 1 commit into from
Aug 18, 2026
+7 −0
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NAS-142228 / 27.0.0-BETA.1 / sunrpc: treat empty auth.unix.gid replies as negative entries #337

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7 changes: 7 additions & 0 deletions net/sunrpc/svcauth_unix.c
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Original file line number Diff line number Diff line change
Expand Up @@ -537,6 +537,13 @@ static int unix_gid_parse(struct cache_detail *cd,
if (ugp) {
struct cache_head *ch;
ug.h.flags = 0;
/*
* mountd sends at least the user's primary group on
* success, so an empty list can only mean the lookup
* failed. Keep the credential's own groups instead.
*/
if (gids == 0)
set_bit(CACHE_NEGATIVE, &ug.h.flags);
ug.h.expiry_time = expiry;
ch = sunrpc_cache_update(cd,
&ug.h, &ugp->h,
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