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Dan Carpenter 641db40f3a proc/vmcore: fix signedness bug in read_from_oldmem() 
The bug is the error handling:

	if (tmp < nr_bytes) {

"tmp" can hold negative error codes but because "nr_bytes" is type size_t
the negative error codes are treated as very high positive values
(success).  Fix this by changing "nr_bytes" to type ssize_t.  The
"nr_bytes" variable is used to store values between 1 and PAGE_SIZE and
they can fit in ssize_t without any issue.

Link: https://lkml.kernel.org/r/b55f7eed-1c65-4adc-95d1-6c7c65a54a6e@moroto.mountain
Fixes: 5d8de293c224 ("vmcore: convert copy_oldmem_page() to take an iov_iter")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-07-27 13:07:05 -07:00
..
9p
9p: Add splice_read wrapper
2023-05-24 08:42:16 -06:00
adfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
affs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
afs
afs: Fix accidental truncation when storing data
2023-07-04 12:24:32 -07:00
autofs
autofs: set ctime as well when mtime changes on a dir
2023-06-15 09:22:24 +02:00
befs
befs: Replace all non-returning strlcpy with strscpy
2023-05-30 16:42:00 -07:00
bfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
btrfs
for-6.5-rc2-tag
2023-07-20 08:11:30 -07:00
cachefiles
v6.5/vfs.file
2023-06-26 10:14:36 -07:00
ceph
A bunch of CephFS fixups from Xiubo, mostly around dropping caps, along
2023-07-07 15:07:20 -07:00
coda
coda: Implement splice-read
2023-05-24 08:42:16 -06:00
configfs
fs: consolidate duplicate dt_type helpers
2023-04-03 09:23:54 +02:00
cramfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
crypto
fscrypt: Replace 1-element array with flexible array
2023-05-23 19:46:09 -07:00
debugfs
debugfs: Correct the 'debugfs_create_str' docs
2023-05-31 19:02:14 +01:00
devpts
devpts: simplify two-level sysctl registration for pty_kern_table
2023-03-13 12:36:34 +01:00
dlm
dlm for 6.5
2023-06-29 13:27:50 -07:00
ecryptfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
efivarfs
efivarfs: expose used and total size
2023-05-17 18:21:34 +02:00
efs
…
erofs
erofs: fix fsdax unavailability for chunk-based regular files
2023-07-12 00:50:56 +08:00
exfat
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
exportfs
exportfs: add explicit flag to request non-decodeable file handles
2023-05-22 18:08:37 +02:00
ext2
\n
2023-06-29 13:39:51 -07:00
ext4
ext4: fix rbtree traversal bug in ext4_mb_use_preallocated
2023-07-23 08:21:14 -04:00
f2fs
f2fs update for 6.5-rc1
2023-07-05 14:14:37 -07:00
fat
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
freevxfs
There is no particular theme here - mainly quick hits all over the tree.
2023-02-23 17:55:40 -08:00
fscache
fscache: Use clear_and_wake_up_bit() in fscache_create_volume_work()
2023-01-30 12:51:54 +00:00
fuse
fuse update for 6.5
2023-07-19 11:00:27 -07:00
gfs2
gfs2 fixes
2023-07-04 11:45:16 -07:00
hfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
hfsplus
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
hostfs
Landlock updates for v6.5-rc1
2023-06-27 17:10:27 -07:00
hpfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
hugetlbfs
hugetlb: revert use of page_cache_next_miss()
2023-06-23 16:59:32 -07:00
iomap
iomap: micro optimize the ki_pos assignment in iomap_file_buffered_write
2023-07-17 08:49:57 -07:00
isofs
…
jbd2
jbd2: remove __journal_try_to_free_buffer()
2023-07-10 23:09:21 -04:00
jffs2
for-6.5/splice-2023-06-23
2023-06-26 11:52:12 -07:00
jfs
Minor bug fixes and cleanups
2023-06-29 13:10:32 -07:00
kernfs
driver core changes for 6.5-rc1
2023-07-03 12:56:23 -07:00
lockd
NFS client updates for Linux 6.5
2023-07-01 14:38:25 -07:00
minix
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
netfs
Move netfs_extract_iter_to_sg() to lib/scatterlist.c
2023-06-08 13:42:33 +02:00
nfs
NFS client updates for Linux 6.5
2023-07-01 14:38:25 -07:00
nfs_common
NFSv4.2: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:52 -07:00
nfsd
nfsd-6.5 fixes:
2023-06-30 21:48:44 -07:00
nilfs2
for-6.5/block-2023-06-23
2023-06-26 12:47:20 -07:00
nls
…
notify
fanotify: disallow mount/sb marks on kernel internal pseudo fs
2023-07-04 13:29:29 +02:00
ntfs
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
2023-06-28 10:28:11 -07:00
ntfs3
driver ntfs3 for linux 6.5
2023-07-07 14:59:38 -07:00
ocfs2
docs: update ocfs2-devel mailing list address
2023-07-08 09:29:29 -07:00
omfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
openpromfs
…
orangefs
orangefs: Provide a splice-read wrapper
2023-05-24 08:42:16 -06:00
overlayfs
ovl: move all parameter handling into params.{c,h}
2023-07-03 16:08:17 +03:00
proc
proc/vmcore: fix signedness bug in read_from_oldmem()
2023-07-27 13:07:05 -07:00
pstore
pstore updates for v6.5-rc1
2023-06-27 21:21:32 -07:00
qnx4
qnx4: credit contributors in CREDITS
2023-03-14 12:56:30 -06:00
qnx6
qnx6: credit contributor and mark filesystem orphan
2023-03-14 12:56:30 -06:00
quota
quota: fix warning in dqgrab()
2023-06-05 16:50:30 +02:00
ramfs
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
2023-06-28 10:28:11 -07:00
reiserfs
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
2023-06-28 10:28:11 -07:00
romfs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
smb
cifs: update internal module version number for cifs.ko
2023-07-22 14:43:13 -05:00
squashfs
squashfs: fix cache race with migration
2023-07-08 09:29:30 -07:00
sysfs
sysfs: Skip empty folders creation
2023-06-15 13:37:53 +02:00
sysv
for-6.5/splice-2023-06-23
2023-06-26 11:52:12 -07:00
tracefs
fs: port ->mkdir() to pass mnt_idmap
2023-01-19 09:24:26 +01:00
ubifs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
udf
\n
2023-06-29 13:39:51 -07:00
ufs
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
unicode
unicode: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:54 -07:00
vboxsf
hardening updates for v6.5-rc1
2023-06-27 21:24:18 -07:00
verity
fsverity: improve documentation for builtin signature support
2023-06-20 22:47:55 -07:00
xfs
xfs: convert flex-array declarations in xfs attr shortform objects
2023-07-17 08:48:56 -07:00
zonefs
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
2023-06-28 10:28:11 -07:00
aio.c
fs/aio: Stop allocating aio rings from HIGHMEM
2023-06-15 09:22:23 +02:00
anon_inodes.c
…
attr.c
nfs: use vfs setgid helper
2023-03-30 08:51:48 +02:00
bad_inode.c
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
binfmt_elf_fdpic.c
binfmt: Slightly simplify elf_fdpic_map_file()
2023-05-30 15:49:46 -07:00
binfmt_elf_test.c
…
binfmt_elf.c
Merge branch 'expand-stack'
2023-06-28 20:35:21 -07:00
binfmt_flat.c
…
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2022-12-02 13:57:04 -08:00
binfmt_script.c
…
buffer.c
\n
2023-06-29 13:39:51 -07:00
char_dev.c
vfs: Replace all non-returning strlcpy with strscpy
2023-05-15 09:42:01 +02:00
compat_binfmt_elf.c
…
coredump.c
v6.5/vfs.misc
2023-06-26 09:50:21 -07:00
d_path.c
fs: d_path: include internal.h
2023-05-17 09:16:59 +02:00
dax.c
dax: enable dax fault handler to report VM_FAULT_HWPOISON
2023-06-26 07:54:23 -06:00
dcache.c
…
direct-io.c
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
2023-06-28 10:28:11 -07:00
drop_caches.c
…
eventfd.c
eventfd: show the EFD_SEMAPHORE flag in fdinfo
2023-06-15 09:22:23 +02:00
eventpoll.c
v6.5/vfs.misc
2023-06-26 09:50:21 -07:00
exec.c
\n
2023-06-29 13:31:44 -07:00
fcntl.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
fhandle.c
fsnotify: move fsnotify_open() hook into do_dentry_open()
2023-06-12 10:43:45 +02:00
file_table.c
fs: move cleanup from init_file() into its callers
2023-07-02 13:15:49 +02:00
file.c
fs: prevent out-of-bounds array speculation when closing a file descriptor
2023-03-09 22:46:21 -05:00
filesystems.c
…
fs_context.c
fs: avoid empty option when generating legacy mount string
2023-06-07 21:49:55 +02:00
fs_parser.c
ext4: journal_path mount options should follow links
2022-12-01 10:46:54 -05:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback: move wb_over_bg_thresh() call outside lock section
2023-06-09 16:25:14 -07:00
fsopen.c
…
init.c
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
inode.c
fs: don't assume arguments are non-NULL
2023-07-04 10:21:11 +02:00
internal.h
v6.5/vfs.file
2023-06-26 10:14:36 -07:00
ioctl.c
fs: port inode_owner_or_capable() to mnt_idmap
2023-01-19 09:24:29 +01:00
Kconfig
smb: move client and server files to common directory fs/smb
2023-05-24 16:29:21 -05:00
Kconfig.binfmt
…
kernel_read_file.c
…
libfs.c
fs: factor out a direct_write_fallback helper
2023-06-09 16:25:53 -07:00
locks.c
filelocks: use mount idmapping for setlease permission check
2023-03-09 22:36:12 +01:00
Makefile
for-6.5/block-2023-06-23
2023-06-26 12:47:20 -07:00
mbcache.c
ext4: fix deadlock due to mbcache entry corruption
2022-12-08 21:49:25 -05:00
mnt_idmapping.c
fs: move mnt_idmap
2023-01-19 09:24:30 +01:00
mount.h
…
mpage.c
mpage: use folios in bio end_io handler
2023-04-18 16:30:02 -07:00
namei.c
fs: no need to check source
2023-07-04 10:20:29 +02:00
namespace.c
v6.5/vfs.mount
2023-06-26 10:27:04 -07:00
nsfs.c
kill the last remaining user of proc_ns_fget()
2023-04-20 22:55:35 -04:00
open.c
\n
2023-06-29 13:31:44 -07:00
pipe.c
pipe: check for IOCB_NOWAIT alongside O_NONBLOCK
2023-05-12 17:17:27 +02:00
pnode.c
fs: allow to mount beneath top mount
2023-05-19 04:30:22 +02:00
pnode.h
fs: allow to mount beneath top mount
2023-05-19 04:30:22 +02:00
posix_acl.c
acl: don't depend on IOP_XATTR
2023-03-06 09:59:20 +01:00
proc_namespace.c
tty, proc, kernfs, random: Use copy_splice_read()
2023-05-24 08:42:16 -06:00
read_write.c
splice: Use filemap_splice_read() instead of generic_file_splice_read()
2023-05-24 08:42:17 -06:00
readdir.c
readdir: Replace one-element arrays with flexible-array members
2023-06-21 09:06:59 +02:00
remap_range.c
fs: use UB-safe check for signed addition overflow in remap_verify_area
2023-05-24 11:03:59 +02:00
select.c
…
seq_file.c
…
signalfd.c
…
splice.c
Networking changes for 6.5.
2023-06-28 16:43:10 -07:00
stack.c
…
stat.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-17 15:20:17 +02:00
super.c
\n
2023-06-29 13:39:51 -07:00
sync.c
…
sysctls.c
sysctl: Refactor base paths registrations
2023-05-23 21:43:26 -07:00
timerfd.c
…
userfaultfd.c
Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes.
2023-06-23 16:58:19 -07:00
utimes.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
xattr.c
fs: don't call posix_acl_listxattr in generic_listxattr
2023-05-17 15:25:20 +02:00