microsoft
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WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
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WSL2-Linux-Kernel/fs
История
Rongwei Wang 8468e937df mm, thp: fix incorrect unmap behavior for private pages 
When truncating pagecache on file THP, the private pages of a process
should not be unmapped mapping.  This incorrect behavior on a dynamic
shared libraries which will cause related processes to happen core dump.

A simple test for a DSO (Prerequisite is the DSO mapped in file THP):

    int main(int argc, char *argv[])
    {
	int fd;

	fd = open(argv[1], O_WRONLY);
	if (fd < 0) {
		perror("open");
	}

	close(fd);
	return 0;
    }

The test only to open a target DSO, and do nothing.  But this operation
will lead one or more process to happen core dump.  This patch mainly to
fix this bug.

Link: https://lkml.kernel.org/r/20211025092134.18562-3-rongwei.wang@linux.alibaba.com
Fixes: eb6ecbed0a ("mm, thp: relax the VM_DENYWRITE constraint on file-backed THPs")
Signed-off-by: Rongwei Wang <rongwei.wang@linux.alibaba.com>
Tested-by: Xu Yu <xuyu@linux.alibaba.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Collin Fijalkovich <cfijalkovich@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2021-11-06 13:30:41 -07:00
..
9p 9p: Fix a bunch of kerneldoc warnings shown up by W=1 2021-10-04 22:07:46 +01:00
adfs
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affs
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afs netfslib, cachefiles and afs fixes 2021-10-07 11:20:08 -07:00
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
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btrfs for-5.15-rc7-tag 2021-10-29 10:46:59 -07:00
cachefiles cachefiles: Change %p in format strings to something else 2021-08-27 13:34:02 +01:00
ceph ceph: fix handling of "meta" errors 2021-10-19 09:36:06 +02:00
cifs cifs: fix incorrect check for null pointer in header_assemble 2021-09-23 21:12:53 -05:00
coda
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configfs configfs: fix a race in configfs_lookup() 2021-08-25 07:58:49 +02:00
cramfs
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crypto fscrypt: align Base64 encoding with RFC 4648 base64url 2021-07-25 20:47:05 -07:00
debugfs debugfs: debugfs_create_file_size(): use IS_ERR to check for error 2021-09-21 09:09:06 +02:00
devpts
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dlm fs: dlm: avoid comms shutdown delay in release_lockspace 2021-09-01 11:29:14 -05:00
ecryptfs
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efivarfs
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efs
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erofs erofs: clear compacted_2b if compacted_4b_initial > totalidx 2021-09-23 23:23:04 +08:00
exfat Description for this pull request: 2021-07-06 11:06:04 -07:00
exportfs
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ext2 ext2: fix sleeping in atomic bugs on error 2021-09-22 13:05:23 +02:00
ext4 Fix a number of ext4 bugs in fast_commit, inline data, and delayed 2021-10-03 13:56:53 -07:00
f2fs f2fs-for-5.15-rc1 2021-09-04 10:48:47 -07:00
fat linux-kselftest-kunit-5.15-rc1 2021-09-02 12:32:12 -07:00
freevxfs
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fscache fscache: Remove an unused static variable 2021-10-04 22:13:12 +01:00
fuse fuse: clean up error exits in fuse_fill_super() 2021-10-21 10:01:39 +02:00
gfs2 Merge branch 'work.gfs2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-09-09 12:45:26 -07:00
hfs hfs: add lock nesting notation to hfs_find_init 2021-07-15 10:13:49 -07:00
hfsplus
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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 mount mode command line processing 2021-07-23 17:43:28 -07:00
iomap iomap: standardize tracepoint formatting and storage 2021-08-26 09:18:53 -07:00
isofs isofs: joliet: Fix iocharset=utf8 mount option 2021-08-12 16:07:14 +02:00
jbd2 jbd2: add sparse annotations for add_transaction_credits() 2021-08-30 23:36:50 -04:00
jffs2 vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
jfs vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
kernfs kernfs: don't create a negative dentry if inactive node exists 2021-10-04 10:27:18 +02:00
ksmbd ksmbd: add buffer validation in session setup 2021-10-20 00:07:10 -05:00
lockd Critical bug fixes: 2021-09-22 09:21:02 -07:00
minix
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netfs netfs: Fix READ/WRITE confusion when calling iov_iter_xarray() 2021-10-05 11:22:06 +01:00
nfs NFS Client Updates for Linux 5.15 2021-09-04 10:25:26 -07:00
nfs_common nfs: Fix kerneldoc warning shown up by W=1 2021-10-04 22:02:17 +01:00
nfsd Bug fixes for NFSD error handling paths 2021-10-07 14:11:40 -07:00
nilfs2 Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
nls
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notify fsnotify: fix sb_connectors leak 2021-09-10 09:46:48 -07:00
ntfs
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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: do not zero pages beyond i_size 2021-11-06 13:30:32 -07:00
omfs
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openpromfs
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orangefs vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
overlayfs ovl: fix IOCB_DIRECT if underlying fs doesn't support direct IO 2021-09-28 09:16:12 +02:00
proc mm/smaps: simplify shmem handling of pte holes 2021-11-06 13:30:33 -07:00
pstore
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qnx4 qnx4: work around gcc false positive warning bug 2021-09-21 08:36:48 -07:00
qnx6
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quota
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ramfs
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reiserfs Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
romfs
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smbfs_common cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
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
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tracefs
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ubifs ubifs: report correct st_size for encrypted symlinks 2021-07-25 20:01:07 -07:00
udf udf_get_extendedattr() had no boundary checks. 2021-08-23 13:35:19 +02:00
ufs isystem: ship and use stdarg.h 2021-08-19 09:02:55 +09:00
unicode
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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 libnvdimm for v5.15 2021-09-09 11:39:57 -07:00
zonefs \n 2021-08-30 10:24:50 -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
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
aio.c eventfd: Make signal recursion protection a task bit 2021-08-28 01:33:02 +02:00
anon_inodes.c
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attr.c fs: Move notify_change permission checks into may_setattr 2021-08-13 00:41:05 -04:00
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.c elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings 2021-10-03 14:02:58 -07:00
binfmt_elf_fdpic.c binfmt: remove in-tree usage of MAP_DENYWRITE 2021-09-03 18:42:01 +02:00
binfmt_flat.c
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binfmt_misc.c
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binfmt_script.c
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buffer.c mm: fs: invalidate bh_lrus for only cold path 2021-09-24 16:13:35 -07:00
char_dev.c
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compat_binfmt_elf.c
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coredump.c coredump: fix memleak in dump_vma_snapshot() 2021-09-08 11:50:27 -07:00
d_path.c d_path: fix Kernel doc validator complaining 2021-11-06 13:30:32 -07:00
dax.c New code for 5.15: 2021-08-31 11:13:35 -07:00
dcache.c
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direct-io.c
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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 Merge tag 'denywrite-for-5.15' of git://github.com/davidhildenbrand/linux 2021-09-04 11:35:47 -07:00
fcntl.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
fhandle.c
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file.c virtio,vdpa,vhost: features, fixes 2021-09-11 14:48:42 -07:00
file_table.c
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filesystems.c fs: simplify get_filesystem_list / get_all_fs_names 2021-08-23 01:25:40 -04:00
fs-writeback.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
fs_context.c memcg: charge fs_context and legacy_fs_context 2021-09-03 09:58:12 -07:00
fs_parser.c namei: Standardize callers of filename_lookup() 2021-09-07 16:07:47 -04:00
fs_pin.c
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fs_struct.c
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fs_types.c
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fsopen.c
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init.c
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inode.c mm: Fully initialize invalidate_lock, amend lock class later 2021-09-17 13:39:23 +02:00
internal.h block: move fs/block_dev.c to block/bdev.c 2021-09-07 08:39:40 -06:00
io-wq.c io-wq: max_worker fixes 2021-10-19 17:09:34 -06:00
io-wq.h io-wq: provide a way to limit max number of workers 2021-08-29 07:55:55 -06:00
io_uring.c io_uring: apply worker limits to previous users 2021-10-21 11:19:38 -06:00
ioctl.c New code for 5.15: 2021-08-31 11:06:32 -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
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locks.c Revert "memcg: enable accounting for file lock caches" 2021-09-07 11:21:48 -07:00
mbcache.c
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mount.h
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mpage.c
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namei.c putname(): IS_ERR_OR_NULL() is wrong here 2021-09-07 16:14:05 -04:00
namespace.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
no-block.c
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nsfs.c
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open.c mm, thp: fix incorrect unmap behavior for private pages 2021-11-06 13:30:41 -07:00
pipe.c Revert "mm/gup: remove try_get_page(), call try_get_compound_head() directly" 2021-09-07 11:03:45 -07:00
pnode.c
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pnode.h
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posix_acl.c fs/posix_acl.c: avoid -Wempty-body warning 2021-11-06 13:30:32 -07:00
proc_namespace.c
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read_write.c fs: clean up after mandatory file locking support removal 2021-08-24 07:52:45 -04:00
readdir.c
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remap_range.c fs: remove mandatory file locking support 2021-08-23 06:15:36 -04:00
select.c Revert "memcg: enable accounting for pollfd and select bits arrays" 2021-09-07 11:26:23 -07:00
seq_file.c seq_file: disallow extremely large seq buffer allocations 2021-07-19 17:18:48 -07:00
signalfd.c signal: Rename SIL_PERF_EVENT SIL_FAULT_PERF_EVENT for consistency 2021-07-23 13:16:43 -05:00
splice.c
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stack.c
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stat.c fs: add generic helper for filling statx attribute flags 2021-08-17 11:47:43 +02:00
statfs.c
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super.c fs: explicitly unregister per-superblock BDIs 2021-11-06 13:30:34 -07:00
sync.c
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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
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xattr.c
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