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This is the 5.4.117 stable release

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Merge 5.4.117 into android11-5.4-lts

Changes in 5.4.117
	mips: Do not include hi and lo in clobber list for R6
	ACPI: tables: x86: Reserve memory occupied by ACPI tables
	ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade()
	net: usb: ax88179_178a: initialize local variables before use
	igb: Enable RSS for Intel I211 Ethernet Controller
	iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd()
	bpf: Fix masking negation logic upon negative dst register
	bpf: Fix leakage of uninitialized bpf stack under speculation
	avoid __memcat_p link failure
	iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_gen2_enqueue_hcmd()
	perf data: Fix error return code in perf_data__create_dir()
	perf ftrace: Fix access to pid in array when setting a pid filter
	ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX
	USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet
	USB: Add reset-resume quirk for WD19's Realtek Hub
	platform/x86: thinkpad_acpi: Correct thermal sensor allocation
	scsi: ufs: Unlock on a couple error paths
	ovl: allow upperdir inside lowerdir
	perf/core: Fix unconditional security_locked_down() call
	vfio: Depend on MMU
	Linux 5.4.117

Signed-off-by: Greg Kroah-Hartman <[email protected]>
Change-Id: I043b976ed759a3b1d44dbafe0dc9e5dd33548182
This commit is contained in:
Greg Kroah-Hartman 2021-05-07 14:06:34 +02:00
commit 1444c72c3d
21 changed files with 171 additions and 81 deletions
Download patch file Download diff file Expand all files Collapse all files

12
fs/overlayfs/super.c
View file

@ -1548,7 +1548,8 @@ out_err:
* - upper/work dir of any overlayfs instance
*/
static int ovl_check_layer(struct super_block *sb, struct ovl_fs *ofs,
struct dentry *dentry, const char *name)
struct dentry *dentry, const char *name,
bool is_lower)
{
struct dentry *next = dentry, *parent;
int err = 0;
@ -1560,7 +1561,7 @@ static int ovl_check_layer(struct super_block *sb, struct ovl_fs *ofs,
/* Walk back ancestors to root (inclusive) looking for traps */
while (!err && parent != next) {
if (ovl_lookup_trap_inode(sb, parent)) {
if (is_lower && ovl_lookup_trap_inode(sb, parent)) {
err = -ELOOP;
pr_err("overlayfs: overlapping %s path\n", name);
} else if (ovl_is_inuse(parent)) {
@ -1586,7 +1587,7 @@ static int ovl_check_overlapping_layers(struct super_block *sb,
if (ofs->upper_mnt) {
err = ovl_check_layer(sb, ofs, ofs->upper_mnt->mnt_root,
"upperdir");
"upperdir", false);
if (err)
return err;
@ -1597,7 +1598,8 @@ static int ovl_check_overlapping_layers(struct super_block *sb,
* workbasedir. In that case, we already have their traps in
* inode cache and we will catch that case on lookup.
*/
err = ovl_check_layer(sb, ofs, ofs->workbasedir, "workdir");
err = ovl_check_layer(sb, ofs, ofs->workbasedir, "workdir",
false);
if (err)
return err;
}
@ -1605,7 +1607,7 @@ static int ovl_check_overlapping_layers(struct super_block *sb,
for (i = 0; i < ofs->numlower; i++) {
err = ovl_check_layer(sb, ofs,
ofs->lower_layers[i].mnt->mnt_root,
"lowerdir");
"lowerdir", true);
if (err)
return err;
}