Revision 9c2f0338bbd132a4b12b988004d796798609d297 authored by Linus Torvalds on 02 February 2024, 20:54:46 UTC, committed by Linus Torvalds on 02 February 2024, 20:54:46 UTC
Pul drm fixes from Dave Airlie: "Regular weekly fixes, mostly amdgpu and xe. One nouveau fix is a better fix for the deadlock and also helps with a sync race we were seeing. dma-buf: - heaps CMA page accounting fix virtio-gpu: - fix segment size xe: - A crash fix - A fix for an assert due to missing mem_acces ref - Only allow a single user-fence per exec / bind. - Some sparse warning fixes - Two fixes for compilation failures on various odd combinations of gcc / arch pointed out on LKML. - Fix a fragile partial allocation pointed out on LKML. - A sysfs ABI documentation warning fix amdgpu: - Fix reboot issue seen on some 7000 series dGPUs - Fix client init order for KFD - Misc display fixes - USB-C fix - DCN 3.5 fixes - Fix issues with GPU scheduler and GPU reset - GPU firmware loading fix - Misc fixes - GC 11.5 fix - VCN 4.0.5 fix - IH overflow fix amdkfd: - SVM fixes - Trap handler fix - Fix device permission lookup - Properly reserve BO before validating it nouveau: - fence/irq lock deadlock fix (second attempt) - gsp command size fix * tag 'drm-fixes-2024-02-03' of git://anongit.freedesktop.org/drm/drm: (35 commits) nouveau: offload fence uevents work to workqueue nouveau/gsp: use correct size for registry rpc. drm/amdgpu/pm: Use inline function for IP version check drm/hwmon: Fix abi doc warnings drm/xe: Make all GuC ABI shift values unsigned drm/xe/vm: Subclass userptr vmas drm/xe: Use LRC prefix rather than CTX prefix in lrc desc defines drm/xe: Don't use __user error pointers drm/xe: Annotate mcr_[un]lock() drm/xe: Only allow 1 ufence per exec / bind IOCTL drm/xe: Grab mem_access when disabling C6 on skip_guc_pc platforms drm/xe: Fix crash in trace_dma_fence_init() drm/amdgpu: Reset IH OVERFLOW_CLEAR bit drm/amdgpu: remove asymmetrical irq disabling in vcn 4.0.5 suspend drm/amdgpu: drm/amdgpu: remove golden setting for gfx 11.5.0 drm/amdkfd: reserve the BO before validating it drm/amdgpu: Fix missing error code in 'gmc_v6/7/8/9_0_hw_init()' drm/amd/display: Fix buffer overflow in 'get_host_router_total_dp_tunnel_bw()' drm/amd/display: Add NULL check for kzalloc in 'amdgpu_dm_atomic_commit_tail()' drm/amd: Don't init MEC2 firmware when it fails to load ...
auth.c
// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> */
#include <linux/sched.h>
#include "nfsd.h"
#include "auth.h"
int nfsexp_flags(struct svc_rqst *rqstp, struct svc_export *exp)
{
struct exp_flavor_info *f;
struct exp_flavor_info *end = exp->ex_flavors + exp->ex_nflavors;
for (f = exp->ex_flavors; f < end; f++) {
if (f->pseudoflavor == rqstp->rq_cred.cr_flavor)
return f->flags;
}
return exp->ex_flags;
}
int nfsd_setuser(struct svc_rqst *rqstp, struct svc_export *exp)
{
struct group_info *rqgi;
struct group_info *gi;
struct cred *new;
int i;
int flags = nfsexp_flags(rqstp, exp);
/* discard any old override before preparing the new set */
revert_creds(get_cred(current_real_cred()));
new = prepare_creds();
if (!new)
return -ENOMEM;
new->fsuid = rqstp->rq_cred.cr_uid;
new->fsgid = rqstp->rq_cred.cr_gid;
rqgi = rqstp->rq_cred.cr_group_info;
if (flags & NFSEXP_ALLSQUASH) {
new->fsuid = exp->ex_anon_uid;
new->fsgid = exp->ex_anon_gid;
gi = groups_alloc(0);
if (!gi)
goto oom;
} else if (flags & NFSEXP_ROOTSQUASH) {
if (uid_eq(new->fsuid, GLOBAL_ROOT_UID))
new->fsuid = exp->ex_anon_uid;
if (gid_eq(new->fsgid, GLOBAL_ROOT_GID))
new->fsgid = exp->ex_anon_gid;
gi = groups_alloc(rqgi->ngroups);
if (!gi)
goto oom;
for (i = 0; i < rqgi->ngroups; i++) {
if (gid_eq(GLOBAL_ROOT_GID, rqgi->gid[i]))
gi->gid[i] = exp->ex_anon_gid;
else
gi->gid[i] = rqgi->gid[i];
}
/* Each thread allocates its own gi, no race */
groups_sort(gi);
} else {
gi = get_group_info(rqgi);
}
if (uid_eq(new->fsuid, INVALID_UID))
new->fsuid = exp->ex_anon_uid;
if (gid_eq(new->fsgid, INVALID_GID))
new->fsgid = exp->ex_anon_gid;
set_groups(new, gi);
put_group_info(gi);
if (!uid_eq(new->fsuid, GLOBAL_ROOT_UID))
new->cap_effective = cap_drop_nfsd_set(new->cap_effective);
else
new->cap_effective = cap_raise_nfsd_set(new->cap_effective,
new->cap_permitted);
put_cred(override_creds(new));
put_cred(new);
return 0;
oom:
abort_creds(new);
return -ENOMEM;
}
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