mirror of https://github.com/torvalds/linux.git
d7147a3357
When mounting a squashfs fails, squashfs_cache_init() may return an error
pointer (e.g., -ENOMEM) instead of NULL. However, squashfs_cache_delete()
only checks for a NULL cache, and attempts to dereference the invalid
pointer. This leads to a kernel crash (BUG: unable to handle kernel
paging request in squashfs_cache_delete).
This patch fixes the issue by checking IS_ERR(cache) before accessing it.
Link: https://lkml.kernel.org/r/20250306132855.2030-1-zhiyuzhang999@gmail.com
Fixes:
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| block.c | ||
| cache.c | ||
| decompressor.c | ||
| decompressor.h | ||
| decompressor_multi.c | ||
| decompressor_multi_percpu.c | ||
| decompressor_single.c | ||
| dir.c | ||
| export.c | ||
| file.c | ||
| file_cache.c | ||
| file_direct.c | ||
| fragment.c | ||
| id.c | ||
| inode.c | ||
| lz4_wrapper.c | ||
| lzo_wrapper.c | ||
| namei.c | ||
| page_actor.c | ||
| page_actor.h | ||
| squashfs.h | ||
| squashfs_fs.h | ||
| squashfs_fs_i.h | ||
| squashfs_fs_sb.h | ||
| super.c | ||
| symlink.c | ||
| xattr.c | ||
| xattr.h | ||
| xattr_id.c | ||
| xz_wrapper.c | ||
| zlib_wrapper.c | ||
| zstd_wrapper.c | ||