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Merge tag 'fs_for_v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull misc fs updates from Jan Kara:
 "The new quotactl_fd() syscall (remake of quotactl_path() syscall that
  got introduced & disabled in 5.13 cycle), and couple of udf, reiserfs,
  isofs, and writeback fixes and cleanups"

* tag 'fs_for_v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  writeback: fix obtain a reference to a freeing memcg css
  quota: remove unnecessary oom message
  isofs: remove redundant continue statement
  quota: Wire up quotactl_fd syscall
  quota: Change quotactl_path() systcall to an fd-based one
  reiserfs: Remove unneed check in reiserfs_write_full_page()
  udf: Fix NULL pointer dereference in udf_symlink function
  reiserfs: add check for invalid 1st journal block
This commit is contained in:
Linus Torvalds 2021-07-01 12:06:39 -07:00
parent a6ecc2a491 8b0ed8443a
commit 911a2997a5
27 changed files with 74 additions and 64 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/alpha/kernel/syscalls/syscall.tbl
View file

@ -482,7 +482,7 @@
550 common process_madvise sys_process_madvise
551 common epoll_pwait2 sys_epoll_pwait2
552 common mount_setattr sys_mount_setattr
# 553 reserved for quotactl_path
553 common quotactl_fd sys_quotactl_fd
554 common landlock_create_ruleset sys_landlock_create_ruleset
555 common landlock_add_rule sys_landlock_add_rule
556 common landlock_restrict_self sys_landlock_restrict_self

2
arch/arm/tools/syscall.tbl
View file

@ -456,7 +456,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

3
arch/arm64/include/asm/unistd32.h
View file

@ -893,7 +893,8 @@ __SYSCALL(__NR_process_madvise, sys_process_madvise)
__SYSCALL(__NR_epoll_pwait2, compat_sys_epoll_pwait2)
#define __NR_mount_setattr 442
__SYSCALL(__NR_mount_setattr, sys_mount_setattr)
/* 443 is reserved for quotactl_path */
#define __NR_quotactl_fd 443
__SYSCALL(__NR_quotactl_fd, sys_quotactl_fd)
#define __NR_landlock_create_ruleset 444
__SYSCALL(__NR_landlock_create_ruleset, sys_landlock_create_ruleset)
#define __NR_landlock_add_rule 445

2
arch/ia64/kernel/syscalls/syscall.tbl
View file

@ -363,7 +363,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/m68k/kernel/syscalls/syscall.tbl
View file

@ -442,7 +442,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/microblaze/kernel/syscalls/syscall.tbl
View file

@ -448,7 +448,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/mips/kernel/syscalls/syscall_n32.tbl
View file

@ -381,7 +381,7 @@
440 n32 process_madvise sys_process_madvise
441 n32 epoll_pwait2 compat_sys_epoll_pwait2
442 n32 mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 n32 quotactl_fd sys_quotactl_fd
444 n32 landlock_create_ruleset sys_landlock_create_ruleset
445 n32 landlock_add_rule sys_landlock_add_rule
446 n32 landlock_restrict_self sys_landlock_restrict_self

2
arch/mips/kernel/syscalls/syscall_n64.tbl
View file

@ -357,7 +357,7 @@
440 n64 process_madvise sys_process_madvise
441 n64 epoll_pwait2 sys_epoll_pwait2
442 n64 mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 n64 quotactl_fd sys_quotactl_fd
444 n64 landlock_create_ruleset sys_landlock_create_ruleset
445 n64 landlock_add_rule sys_landlock_add_rule
446 n64 landlock_restrict_self sys_landlock_restrict_self

2
arch/mips/kernel/syscalls/syscall_o32.tbl
View file

@ -430,7 +430,7 @@
440 o32 process_madvise sys_process_madvise
441 o32 epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 o32 mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 o32 quotactl_fd sys_quotactl_fd
444 o32 landlock_create_ruleset sys_landlock_create_ruleset
445 o32 landlock_add_rule sys_landlock_add_rule
446 o32 landlock_restrict_self sys_landlock_restrict_self

2
arch/parisc/kernel/syscalls/syscall.tbl
View file

@ -440,7 +440,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/powerpc/kernel/syscalls/syscall.tbl
View file

@ -522,7 +522,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/s390/kernel/syscalls/syscall.tbl
View file

@ -445,7 +445,7 @@
440 common process_madvise sys_process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self sys_landlock_restrict_self

2
arch/sh/kernel/syscalls/syscall.tbl
View file

@ -445,7 +445,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/sparc/kernel/syscalls/syscall.tbl
View file

@ -488,7 +488,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/x86/entry/syscalls/syscall_32.tbl
View file

@ -447,7 +447,7 @@
440 i386 process_madvise sys_process_madvise
441 i386 epoll_pwait2 sys_epoll_pwait2 compat_sys_epoll_pwait2
442 i386 mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 i386 quotactl_fd sys_quotactl_fd
444 i386 landlock_create_ruleset sys_landlock_create_ruleset
445 i386 landlock_add_rule sys_landlock_add_rule
446 i386 landlock_restrict_self sys_landlock_restrict_self

2
arch/x86/entry/syscalls/syscall_64.tbl
View file

@ -364,7 +364,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

2
arch/xtensa/kernel/syscalls/syscall.tbl
View file

@ -413,7 +413,7 @@
440 common process_madvise sys_process_madvise
441 common epoll_pwait2 sys_epoll_pwait2
442 common mount_setattr sys_mount_setattr
# 443 reserved for quotactl_path
443 common quotactl_fd sys_quotactl_fd
444 common landlock_create_ruleset sys_landlock_create_ruleset
445 common landlock_add_rule sys_landlock_add_rule
446 common landlock_restrict_self sys_landlock_restrict_self

9
fs/fs-writeback.c
View file

@ -567,9 +567,14 @@ static void inode_switch_wbs(struct inode *inode, int new_wb_id)
/* find and pin the new wb */
rcu_read_lock();
memcg_css = css_from_id(new_wb_id, &memory_cgrp_subsys);
if (memcg_css)
isw->new_wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC);
if (memcg_css && !css_tryget(memcg_css))
memcg_css = NULL;
rcu_read_unlock();
if (!memcg_css)
goto out_free;
isw->new_wb = wb_get_create(bdi, memcg_css, GFP_ATOMIC);
css_put(memcg_css);
if (!isw->new_wb)
goto out_free;

2
fs/isofs/dir.c
View file

@ -235,8 +235,6 @@ static int do_isofs_readdir(struct inode *inode, struct file *file,
break;
}
ctx->pos += de_len;
continue;
}
if (bh)
brelse(bh);

28
fs/quota/quota.c
View file

@ -968,31 +968,30 @@ SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special,
return ret;
}
SYSCALL_DEFINE4(quotactl_path, unsigned int, cmd, const char __user *,
mountpoint, qid_t, id, void __user *, addr)
SYSCALL_DEFINE4(quotactl_fd, unsigned int, fd, unsigned int, cmd,
qid_t, id, void __user *, addr)
{
struct super_block *sb;
struct path mountpath;
unsigned int cmds = cmd >> SUBCMDSHIFT;
unsigned int type = cmd & SUBCMDMASK;
struct fd f;
int ret;
f = fdget_raw(fd);
if (!f.file)
return -EBADF;
ret = -EINVAL;
if (type >= MAXQUOTAS)
return -EINVAL;
ret = user_path_at(AT_FDCWD, mountpoint,
LOOKUP_FOLLOW | LOOKUP_AUTOMOUNT, &mountpath);
if (ret)
return ret;
sb = mountpath.mnt->mnt_sb;
goto out;
if (quotactl_cmd_write(cmds)) {
ret = mnt_want_write(mountpath.mnt);
ret = mnt_want_write(f.file->f_path.mnt);
if (ret)
goto out;
}
sb = f.file->f_path.mnt->mnt_sb;
if (quotactl_cmd_onoff(cmds))
down_write(&sb->s_umount);
else
@ -1006,9 +1005,8 @@ SYSCALL_DEFINE4(quotactl_path, unsigned int, cmd, const char __user *,
up_read(&sb->s_umount);
if (quotactl_cmd_write(cmds))
mnt_drop_write(mountpath.mnt);
mnt_drop_write(f.file->f_path.mnt);
out:
path_put(&mountpath);
fdput(f);
return ret;
}

33
fs/quota/quota_tree.c
View file

@ -47,15 +47,6 @@ static int qtree_dqstr_in_blk(struct qtree_mem_dqinfo *info)
/ info->dqi_entry_size;
}
static char *getdqbuf(size_t size)
{
char *buf = kmalloc(size, GFP_NOFS);
if (!buf)
printk(KERN_WARNING
"VFS: Not enough memory for quota buffers.\n");
return buf;
}
static ssize_t read_blk(struct qtree_mem_dqinfo *info, uint blk, char *buf)
{
struct super_block *sb = info->dqi_sb;
@ -83,7 +74,7 @@ static ssize_t write_blk(struct qtree_mem_dqinfo *info, uint blk, char *buf)
/* Remove empty block from list and return it */
static int get_free_dqblk(struct qtree_mem_dqinfo *info)
{
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
int ret, blk;
@ -132,7 +123,7 @@ static int put_free_dqblk(struct qtree_mem_dqinfo *info, char *buf, uint blk)
static int remove_free_dqentry(struct qtree_mem_dqinfo *info, char *buf,
uint blk)
{
char *tmpbuf = getdqbuf(info->dqi_usable_bs);
char *tmpbuf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
uint nextblk = le32_to_cpu(dh->dqdh_next_free);
uint prevblk = le32_to_cpu(dh->dqdh_prev_free);
@ -179,7 +170,7 @@ static int remove_free_dqentry(struct qtree_mem_dqinfo *info, char *buf,
static int insert_free_dqentry(struct qtree_mem_dqinfo *info, char *buf,
uint blk)
{
char *tmpbuf = getdqbuf(info->dqi_usable_bs);
char *tmpbuf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
struct qt_disk_dqdbheader *dh = (struct qt_disk_dqdbheader *)buf;
int err;
@ -227,7 +218,7 @@ static uint find_free_dqentry(struct qtree_mem_dqinfo *info,
{
uint blk, i;
struct qt_disk_dqdbheader *dh;
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
char *ddquot;
*err = 0;
@ -298,7 +289,7 @@ static uint find_free_dqentry(struct qtree_mem_dqinfo *info,
static int do_insert_tree(struct qtree_mem_dqinfo *info, struct dquot *dquot,
uint *treeblk, int depth)
{
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
int ret = 0, newson = 0, newact = 0;
__le32 *ref;
uint newblk;
@ -375,7 +366,7 @@ int qtree_write_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
int type = dquot->dq_id.type;
struct super_block *sb = dquot->dq_sb;
ssize_t ret;
char *ddquot = getdqbuf(info->dqi_entry_size);
char *ddquot = kmalloc(info->dqi_entry_size, GFP_NOFS);
if (!ddquot)
return -ENOMEM;
@ -414,7 +405,7 @@ static int free_dqentry(struct qtree_mem_dqinfo *info, struct dquot *dquot,
uint blk)
{
struct qt_disk_dqdbheader *dh;
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
int ret = 0;
if (!buf)
@ -474,7 +465,7 @@ static int free_dqentry(struct qtree_mem_dqinfo *info, struct dquot *dquot,
static int remove_tree(struct qtree_mem_dqinfo *info, struct dquot *dquot,
uint *blk, int depth)
{
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
int ret = 0;
uint newblk;
__le32 *ref = (__le32 *)buf;
@ -533,7 +524,7 @@ EXPORT_SYMBOL(qtree_delete_dquot);
static loff_t find_block_dqentry(struct qtree_mem_dqinfo *info,
struct dquot *dquot, uint blk)
{
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
loff_t ret = 0;
int i;
char *ddquot;
@ -571,7 +562,7 @@ static loff_t find_block_dqentry(struct qtree_mem_dqinfo *info,
static loff_t find_tree_dqentry(struct qtree_mem_dqinfo *info,
struct dquot *dquot, uint blk, int depth)
{
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
loff_t ret = 0;
__le32 *ref = (__le32 *)buf;
@ -635,7 +626,7 @@ int qtree_read_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
}
dquot->dq_off = offset;
}
ddquot = getdqbuf(info->dqi_entry_size);
ddquot = kmalloc(info->dqi_entry_size, GFP_NOFS);
if (!ddquot)
return -ENOMEM;
ret = sb->s_op->quota_read(sb, type, ddquot, info->dqi_entry_size,
@ -679,7 +670,7 @@ EXPORT_SYMBOL(qtree_release_dquot);
static int find_next_id(struct qtree_mem_dqinfo *info, qid_t *id,
unsigned int blk, int depth)
{
char *buf = getdqbuf(info->dqi_usable_bs);
char *buf = kmalloc(info->dqi_usable_bs, GFP_NOFS);
__le32 *ref = (__le32 *)buf;
ssize_t ret;
unsigned int epb = info->dqi_usable_bs >> 2;

4
fs/reiserfs/inode.c
View file

@ -2584,9 +2584,7 @@ static int reiserfs_write_full_page(struct page *page,
clear_buffer_dirty(bh);
set_buffer_uptodate(bh);
} else if ((checked || buffer_dirty(bh)) &&
(!buffer_mapped(bh) || (buffer_mapped(bh)
&& bh->b_blocknr ==
0))) {
(!buffer_mapped(bh) || bh->b_blocknr == 0)) {
/*
* not mapped yet, or it points to a direct item, search
* the btree for the mapping info, and log any direct

14
fs/reiserfs/journal.c
View file

@ -2758,6 +2758,20 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
goto free_and_return;
}
/*
* Sanity check to see if journal first block is correct.
* If journal first block is invalid it can cause
* zeroing important superblock members.
*/
if (!SB_ONDISK_JOURNAL_DEVICE(sb) &&
SB_ONDISK_JOURNAL_1st_BLOCK(sb) < SB_JOURNAL_1st_RESERVED_BLOCK(sb)) {
reiserfs_warning(sb, "journal-1393",
"journal 1st super block is invalid: 1st reserved block %d, but actual 1st block is %d",
SB_JOURNAL_1st_RESERVED_BLOCK(sb),
SB_ONDISK_JOURNAL_1st_BLOCK(sb));
goto free_and_return;
}
if (journal_init_dev(sb, journal, j_dev_name) != 0) {
reiserfs_warning(sb, "sh-462",
"unable to initialize journal device");

4
fs/udf/namei.c
View file

@ -934,6 +934,10 @@ static int udf_symlink(struct user_namespace *mnt_userns, struct inode *dir,
iinfo->i_location.partitionReferenceNum,
0);
epos.bh = udf_tgetblk(sb, block);
if (unlikely(!epos.bh)) {
err = -ENOMEM;
goto out_no_entry;
}
lock_buffer(epos.bh);
memset(epos.bh->b_data, 0x00, bsize);
set_buffer_uptodate(epos.bh);

4
include/linux/syscalls.h
View file

@ -485,8 +485,8 @@ asmlinkage long sys_pipe2(int __user *fildes, int flags);
/* fs/quota.c */
asmlinkage long sys_quotactl(unsigned int cmd, const char __user *special,
qid_t id, void __user *addr);
asmlinkage long sys_quotactl_path(unsigned int cmd, const char __user *mountpoint,
qid_t id, void __user *addr);
asmlinkage long sys_quotactl_fd(unsigned int fd, unsigned int cmd, qid_t id,
void __user *addr);
/* fs/readdir.c */
asmlinkage long sys_getdents64(unsigned int fd,

3
include/uapi/asm-generic/unistd.h
View file

@ -863,7 +863,8 @@ __SYSCALL(__NR_process_madvise, sys_process_madvise)
__SC_COMP(__NR_epoll_pwait2, sys_epoll_pwait2, compat_sys_epoll_pwait2)
#define __NR_mount_setattr 442
__SYSCALL(__NR_mount_setattr, sys_mount_setattr)
/* 443 is reserved for quotactl_path */
#define __NR_quotactl_fd 443
__SYSCALL(__NR_quotactl_fd, sys_quotactl_fd)
#define __NR_landlock_create_ruleset 444
__SYSCALL(__NR_landlock_create_ruleset, sys_landlock_create_ruleset)

2
kernel/sys_ni.c
View file

@ -99,7 +99,7 @@ COND_SYSCALL(flock);
/* fs/quota.c */
COND_SYSCALL(quotactl);
COND_SYSCALL(quotactl_path);
COND_SYSCALL(quotactl_fd);
/* fs/readdir.c */