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authorLinus Torvalds <torvalds@linux-foundation.org>2023-05-23 10:47:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-05-23 10:47:32 -0700
commit5fe326b4467689ef3690491ee2ad25ff4d81fe59 (patch)
treef4117fbe14cccd56f182eeaa3eacd23846cd3a61 /fs
parentae8373a5add4ea39f032563cf12a02946d1e3546 (diff)
parentcf7f2732b4b83026842832e7e4e04bf862108ac2 (diff)
Merge tag 'erofs-for-6.4-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fixes from Gao Xiang: "One patch addresses a null-ptr-deref issue reported by syzbot weeks ago, which is caused by the new long xattr name prefix feature and needs to be fixed. The remaining two patches are minor cleanups to avoid unnecessary compilation and adjust per-cpu kworker configuration. Summary: - Fix null-ptr-deref related to long xattr name prefixes - Avoid pcpubuf compilation if CONFIG_EROFS_FS_ZIP is off - Use high priority kthreads by default if per-cpu kthread workers are enabled" * tag 'erofs-for-6.4-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: erofs: use HIPRI by default if per-cpu kthreads are enabled erofs: avoid pcpubuf.c inclusion if CONFIG_EROFS_FS_ZIP is off erofs: fix null-ptr-deref caused by erofs_xattr_prefixes_init
Diffstat (limited to 'fs')
-rw-r--r--fs/erofs/Kconfig1
-rw-r--r--fs/erofs/Makefile4
-rw-r--r--fs/erofs/internal.h13
-rw-r--r--fs/erofs/xattr.c2
-rw-r--r--fs/erofs/zdata.c2
5 files changed, 11 insertions, 11 deletions
diff --git a/fs/erofs/Kconfig b/fs/erofs/Kconfig
index 704fb59577e0..f259d92c9720 100644
--- a/fs/erofs/Kconfig
+++ b/fs/erofs/Kconfig
@@ -121,6 +121,7 @@ config EROFS_FS_PCPU_KTHREAD
config EROFS_FS_PCPU_KTHREAD_HIPRI
bool "EROFS high priority per-CPU kthread workers"
depends on EROFS_FS_ZIP && EROFS_FS_PCPU_KTHREAD
+ default y
help
This permits EROFS to configure per-CPU kthread workers to run
at higher priority.
diff --git a/fs/erofs/Makefile b/fs/erofs/Makefile
index 99bbc597a3e9..a3a98fc3e481 100644
--- a/fs/erofs/Makefile
+++ b/fs/erofs/Makefile
@@ -1,8 +1,8 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_EROFS_FS) += erofs.o
-erofs-objs := super.o inode.o data.o namei.o dir.o utils.o pcpubuf.o sysfs.o
+erofs-objs := super.o inode.o data.o namei.o dir.o utils.o sysfs.o
erofs-$(CONFIG_EROFS_FS_XATTR) += xattr.o
-erofs-$(CONFIG_EROFS_FS_ZIP) += decompressor.o zmap.o zdata.o
+erofs-$(CONFIG_EROFS_FS_ZIP) += decompressor.o zmap.o zdata.o pcpubuf.o
erofs-$(CONFIG_EROFS_FS_ZIP_LZMA) += decompressor_lzma.o
erofs-$(CONFIG_EROFS_FS_ONDEMAND) += fscache.o
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index af0431a40647..1e39c03357d1 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -472,12 +472,6 @@ static inline void *erofs_vm_map_ram(struct page **pages, unsigned int count)
return NULL;
}
-void *erofs_get_pcpubuf(unsigned int requiredpages);
-void erofs_put_pcpubuf(void *ptr);
-int erofs_pcpubuf_growsize(unsigned int nrpages);
-void __init erofs_pcpubuf_init(void);
-void erofs_pcpubuf_exit(void);
-
int erofs_register_sysfs(struct super_block *sb);
void erofs_unregister_sysfs(struct super_block *sb);
int __init erofs_init_sysfs(void);
@@ -512,6 +506,11 @@ int z_erofs_load_lz4_config(struct super_block *sb,
struct z_erofs_lz4_cfgs *lz4, int len);
int z_erofs_map_blocks_iter(struct inode *inode, struct erofs_map_blocks *map,
int flags);
+void *erofs_get_pcpubuf(unsigned int requiredpages);
+void erofs_put_pcpubuf(void *ptr);
+int erofs_pcpubuf_growsize(unsigned int nrpages);
+void __init erofs_pcpubuf_init(void);
+void erofs_pcpubuf_exit(void);
#else
static inline void erofs_shrinker_register(struct super_block *sb) {}
static inline void erofs_shrinker_unregister(struct super_block *sb) {}
@@ -529,6 +528,8 @@ static inline int z_erofs_load_lz4_config(struct super_block *sb,
}
return 0;
}
+static inline void erofs_pcpubuf_init(void) {}
+static inline void erofs_pcpubuf_exit(void) {}
#endif /* !CONFIG_EROFS_FS_ZIP */
#ifdef CONFIG_EROFS_FS_ZIP_LZMA
diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index cd80499351e0..bbfe7ce170d2 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -675,7 +675,7 @@ int erofs_xattr_prefixes_init(struct super_block *sb)
if (!pfs)
return -ENOMEM;
- if (erofs_sb_has_fragments(sbi))
+ if (sbi->packed_inode)
buf.inode = sbi->packed_inode;
else
erofs_init_metabuf(&buf, sb);
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 45f21db2303a..160b3da43aec 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -369,8 +369,6 @@ static struct kthread_worker *erofs_init_percpu_worker(int cpu)
return worker;
if (IS_ENABLED(CONFIG_EROFS_FS_PCPU_KTHREAD_HIPRI))
sched_set_fifo_low(worker->task);
- else
- sched_set_normal(worker->task, 0);
return worker;
}