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Jann Horn 6cdb84dd0c coredump: Also dump first pages of non-executable ELF libraries 
commit 84158b7f6a0624b81800b4e7c90f7fb7fdecf66c upstream.

When I rewrote the VMA dumping logic for coredumps, I changed it to
recognize ELF library mappings based on the file being executable instead
of the mapping having an ELF header. But turns out, distros ship many ELF
libraries as non-executable, so the heuristic goes wrong...

Restore the old behavior where FILTER(ELF_HEADERS) dumps the first page of
any offset-0 readable mapping that starts with the ELF magic.

This fix is technically layer-breaking a bit, because it checks for
something ELF-specific in fs/coredump.c; but since we probably want to
share this between standard ELF and FDPIC ELF anyway, I guess it's fine?
And this also keeps the change small for backporting.

Cc: stable@vger.kernel.org
Fixes: 429a22e776a2 ("coredump: rework elf/elf_fdpic vma_dump_size() into common helper")
Reported-by: Bill Messmer <wmessmer@microsoft.com>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220126025739.2014888-1-jannh@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-08 14:22:58 +02:00
..
9p
Revert "fs/9p: search open fids first"
2022-02-08 18:34:04 +01:00
adfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
affs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
afs
afs: Fix mmap
2021-12-22 09:32:45 +01:00
autofs
autofs: fix wait name hash calculation in autofs_wait()
2021-10-20 21:09:02 -04:00
befs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
bfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
btrfs
btrfs: skip reserved bytes warning on unmount after log cleanup failure
2022-03-23 09:16:43 +01:00
cachefiles
cachefiles: Change %p in format strings to something else
2021-08-27 13:34:02 +01:00
ceph
ceph: put the requests/sessions when it fails to alloc memory
2022-02-01 17:27:14 +01:00
cifs
cifs: fix NULL ptr dereference in smb2_ioctl_query_info()
2022-04-08 14:22:55 +02:00
coda
…
configfs
configfs: fix a race in configfs_{,un}register_subsystem()
2022-03-02 11:48:02 +01:00
cramfs
…
crypto
fscrypt: allow 256-bit master keys with AES-256-XTS
2021-11-18 19:16:11 +01:00
debugfs
debugfs: lockdown: Allow reading debugfs files that are not world readable
2022-01-27 11:03:55 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:27:01 +01:00
dlm
fs: dlm: filter user dlm messages for kernel locks
2022-01-27 11:04:23 +01:00
ecryptfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
efivarfs
…
efs
…
erofs
erofs: fix deadlock when shrink erofs slab
2021-12-01 09:04:50 +01:00
exfat
exfat: fix i_blocks for files truncated over 4 GiB
2022-03-08 19:12:32 +01:00
exportfs
…
ext2
ext2: fix sleeping in atomic bugs on error
2021-09-22 13:05:23 +02:00
ext4
ext4: fast commit may miss file actions
2022-03-08 19:12:32 +01:00
f2fs
f2fs: fix to do sanity check on .cp_pack_total_block_count
2022-04-08 14:22:52 +02:00
fat
linux-kselftest-kunit-5.15-rc1
2021-09-02 12:32:12 -07:00
freevxfs
…
fscache
fscache: Remove an unused static variable
2021-10-04 22:13:12 +01:00
fuse
fuse: fix pipe buffer lifetime for direct_io
2022-03-16 14:23:42 +01:00
gfs2
gfs2: Fix gfs2_release for non-writers regression
2022-02-16 12:56:18 +01:00
hfs
hfs: add lock nesting notation to hfs_find_init
2021-07-15 10:13:49 -07:00
hfsplus
hfsplus: report create_date to kstat.btime
2021-07-01 11:06:06 -07:00
hostfs
hostfs: support splice_write
2021-08-26 22:28:02 +02:00
hpfs
hpfs: use iomap_fiemap to implement ->fiemap
2021-07-27 11:00:36 +02:00
hugetlbfs
hugetlbfs: fix off-by-one error in hugetlb_vmdelete_list()
2022-03-08 19:12:38 +01:00
iomap
iomap: Fix inline extent handling in iomap_readpage
2021-12-01 09:04:44 +01:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-11-12 15:05:50 +01:00
jbd2
ext4: fast commit may not fallback for ineligible commit
2022-03-08 19:12:32 +01:00
jffs2
jffs2: fix memory leak in jffs2_scan_medium
2022-04-08 14:22:53 +02:00
jfs
JFS: fix memleak in jfs_mount
2021-11-18 19:16:48 +01:00
kernfs
kernfs: don't create a negative dentry if inactive node exists
2021-10-04 10:27:18 +02:00
ksmbd
ksmbd: don't align last entry offset in smb2 query directory
2022-02-23 12:03:18 +01:00
lockd
lockd: fix failure to cleanup client locks
2022-02-05 12:38:57 +01:00
minix
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
netfs
netfs: fix parameter of cleanup()
2021-12-29 12:28:59 +01:00
nfs
NFS: NFSv2/v3 clients should never be setting NFS_CAP_XATTR
2022-04-08 14:22:52 +02:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
NFSD: prevent underflow in nfssvc_decode_writeargs()
2022-04-08 14:22:52 +02:00
nilfs2
Merge branch 'akpm' (patches from Andrew)
2021-09-08 12:55:35 -07:00
nls
…
notify
fanotify: Fix stale file descriptor in copy_event_to_user()
2022-02-05 12:38:59 +01:00
ntfs
Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2021-07-03 11:30:04 -07:00
ntfs3
Fixed xfstests generic/016 generic/021 generic/022 generic/041 generic/274 generic/423,
2021-10-15 09:58:11 -04:00
ocfs2
ocfs2: fix crash when mount with quota enabled
2022-04-08 14:22:56 +02:00
omfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
openpromfs
…
orangefs
orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()
2022-01-20 09:13:13 +01:00
overlayfs
ovl: fix NULL pointer dereference in copy up warning
2022-02-05 12:38:59 +01:00
proc
proc: fix documentation and description of pagemap
2022-03-08 19:12:54 +01:00
pstore
pstore/blk: Use "%lu" to format unsigned long
2021-11-25 09:48:42 +01:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-21 08:36:48 -07:00
qnx6
…
quota
quota: make dquot_quota_sync return errors from ->sync_fs
2022-02-23 12:03:06 +01:00
ramfs
fs: move ramfs_aops to libfs
2021-06-29 10:53:48 -07:00
reiserfs
Kbuild updates for v5.15
2021-09-03 15:33:47 -07:00
romfs
…
smbfs_common
cifs: Fix crash on unload of cifs_arc4.ko
2021-12-14 10:57:12 +01:00
squashfs
squashfs: use bvec_virt
2021-08-16 10:50:32 -06:00
sysfs
sysfs: Allow deferred execution of iomem_get_mapping()
2021-08-06 13:05:28 +02:00
sysv
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
tracefs
tracefs: Set the group ownership in apply_options() not parse_options()
2022-03-02 11:48:05 +01:00
ubifs
ubifs: Error path in ubifs_remount_rw() seems to wrongly free write buffers
2022-01-27 11:05:07 +01:00
udf
udf: Fix NULL ptr deref when converting from inline format
2022-02-01 17:27:00 +01:00
ufs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
unicode
…
vboxsf
vboxfs: fix broken legacy mount signature checking
2021-09-27 11:26:21 -07:00
verity
fs-verity: fix signed integer overflow with i_size near S64_MAX
2021-09-22 10:56:34 -07:00
xfs
xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate
2022-01-11 15:35:16 +01:00
zonefs
zonefs: add MODULE_ALIAS_FS
2021-12-22 09:32:48 +01:00
aio.c
aio: Fix incorrect usage of eventfd_signal_allowed()
2021-12-14 10:57:22 +01:00
anon_inodes.c
…
attr.c
fs: handle circular mappings correctly
2021-11-25 09:48:46 +01:00
bad_inode.c
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
binfmt_aout.c
binfmt: a.out: Fix bogus semicolon
2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c
binfmt: remove in-tree usage of MAP_DENYWRITE
2021-09-03 18:42:01 +02:00
binfmt_elf.c
elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings
2021-10-03 14:02:58 -07:00
binfmt_flat.c
binfmt: remove in-tree usage of MAP_EXECUTABLE
2021-06-29 10:53:50 -07:00
binfmt_misc.c
…
binfmt_script.c
…
buffer.c
mm: fs: fix lru_cache_disabled race in bh_lru
2022-04-08 14:22:54 +02:00
char_dev.c
…
compat_binfmt_elf.c
…
coredump.c
coredump: Also dump first pages of non-executable ELF libraries
2022-04-08 14:22:58 +02:00
d_path.c
d_path: make 'prepend()' fill up the buffer exactly on overflow
2021-09-02 10:07:29 -07:00
dax.c
New code for 5.15:
2021-08-31 11:13:35 -07:00
dcache.c
…
direct-io.c
…
drop_caches.c
fs: drop_caches: fix skipping over shadow cache inodes
2021-09-03 09:58:10 -07:00
eventfd.c
eventfd: Export eventfd_wake_count to modules
2021-09-06 07:20:56 -04:00
eventpoll.c
ARM development updates for 5.15:
2021-09-09 13:25:49 -07:00
exec.c
signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV)
2021-11-25 09:49:06 +01:00
fcntl.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fhandle.c
…
file_table.c
…
file.c
fget: clarify and improve __fget_files() implementation
2022-01-16 09:12:42 +01:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
vfs: fs_context: fix up param length parsing in legacy_parse_param
2022-01-20 09:13:14 +01:00
fs_parser.c
namei: Standardize callers of filename_lookup()
2021-09-07 16:07:47 -04:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fsopen.c
…
init.c
…
inode.c
fs: export an inode_update_time helper
2021-11-25 09:49:08 +01:00
internal.h
block: move fs/block_dev.c to block/bdev.c
2021-09-07 08:39:40 -06:00
io_uring.c
io_uring: fix no lock protection for ctx->cq_extra
2022-03-08 19:12:33 +01:00
io-wq.c
io-wq: drop wqe lock before creating new worker
2021-12-22 09:32:51 +01:00
io-wq.h
io-wq: provide a way to limit max number of workers
2021-08-29 07:55:55 -06:00
ioctl.c
New code for 5.15:
2021-08-31 11:06:32 -07:00
Kconfig
4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate
2021-09-12 10:10:21 -07:00
Kconfig.binfmt
binfmt: remove support for em86 (alpha only)
2021-07-25 22:33:03 -07:00
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-18 20:22:03 -10:00
libfs.c
fs: remove noop_set_page_dirty()
2021-06-29 10:53:48 -07:00
locks.c
Revert "memcg: enable accounting for file lock caches"
2021-09-07 11:21:48 -07:00
Makefile
4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate
2021-09-12 10:10:21 -07:00
mbcache.c
…
mount.h
…
mpage.c
…
namei.c
fsnotify: invalidate dcache before IN_DELETE event
2022-02-01 17:27:15 +01:00
namespace.c
fs/mount_setattr: always cleanup mount_kattr
2022-01-05 12:42:39 +01:00
no-block.c
…
nsfs.c
…
open.c
mm, thp: fix incorrect unmap behavior for private pages
2021-11-18 19:17:17 +01:00
pipe.c
watch_queue: Fix lack of barrier/sync/lock between post and read
2022-03-16 14:23:44 +01:00
pnode.c
…
pnode.h
…
posix_acl.c
ovl: enable RCU'd ->get_acl()
2021-08-18 22:08:24 +02:00
proc_namespace.c
…
read_write.c
fs: clean up after mandatory file locking support removal
2021-08-24 07:52:45 -04:00
readdir.c
…
remap_range.c
fs: remove mandatory file locking support
2021-08-23 06:15:36 -04:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-29 10:58:25 +01:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-19 17:18:48 -07:00
signalfd.c
signalfd: use wake_up_pollfree()
2021-12-14 10:57:15 +01:00
splice.c
…
stack.c
…
stat.c
fs: add generic helper for filling statx attribute flags
2021-08-17 11:47:43 +02:00
statfs.c
…
super.c
vfs: make freeze_super abort when sync_filesystem returns error
2022-02-23 12:03:05 +01:00
sync.c
…
timerfd.c
timerfd: Provide timerfd_resume()
2021-08-10 17:57:22 +02:00
userfaultfd.c
userfaultfd: fix a race between writeprotect and exit_mmap()
2021-10-18 20:22:02 -10:00
utimes.c
…
xattr.c
…