Peter Xu
dc8785e150
UPSTREAM: mm: introduce FAULT_FLAG_INTERRUPTIBLE ...
handle_userfaultfd() is currently the only one place in the kernel page
fault procedures that can respond to non-fatal userspace signals. It was
trying to detect such an allowance by checking against USER & KILLABLE
flags, which was "un-official".
In this patch, we introduced a new flag (FAULT_FLAG_INTERRUPTIBLE) to show
that the fault handler allows the fault procedure to respond even to
non-fatal signals. Meanwhile, add this new flag to the default fault
flags so that all the page fault handlers can benefit from the new flag.
With that, replacing the userfault check to this one.
Since the line is getting even longer, clean up the fault flags a bit too
to ease TTY users.
Although we've got a new flag and applied it, we shouldn't have any
functional change with this patch so far.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Brian Geffon <bgeffon@google.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Bobby Powers <bobbypowers@gmail.com>
Cc: Denis Plotnikov <dplotnikov@virtuozzo.com>
Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>
Cc: Martin Cracauer <cracauer@cons.org>
Cc: Marty McFadden <mcfadden8@llnl.gov>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Maya Gokhale <gokhale2@llnl.gov>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Link: http://lkml.kernel.org/r/20200220195348.16302-1-peterx@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit c270a7eedcf278304e05ebd2c96807487c97db61)
Bug: 176847924
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Change-Id: I4abde9ce54aae56b0791884adf45210973f8a210
2025-05-18 08:08:42 +00:00
This is the 5.4.276 stable release
2024-05-17 15:29:56 +00:00
affs: don't write overlarge OFS data block size fields
2025-04-10 14:29:42 +02:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
autofs: fix memory leak of waitqueues in autofs_catatonic_mode
2023-09-23 11:00:02 +02:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
cachefiles: fix memory leak in cachefiles_add_cache()
2024-03-06 14:36:10 +00:00
This is the 5.4.285 stable release
2024-11-09 11:29:17 +00:00
Merge 5.4.287 into android11-5.4-lts
2024-12-16 10:50:16 +00:00
coda: Avoid partial allocation of sig_inputArgs
2023-03-11 16:43:56 +01:00
configfs: fix possible memory leak in configfs_create_dir()
2023-01-18 11:41:09 +01:00
UPSTREAM: fscrypt: fix derivation of SipHash keys on big endian CPUs
2022-11-22 07:58:42 +00:00
new helper: lookup_positive_unlocked()
2023-09-23 10:59:40 +02:00
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:24:34 +01:00
dlm: fix plock lookup when using multiple lockspaces
2023-09-23 10:59:55 +02:00
This is the 5.4.278 stable release
2024-06-18 14:18:49 +00:00
efivarfs: Fix error on non-existent file
2025-01-09 13:23:28 +01:00
Merge tag 'ASB-2025-02-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-02-06 22:53:05 +02:00
Merge branch 'for-kernel-version-from-4.1.0' of https://github.com/namjaejeon/linux-exfat-oot into android13-5.4-lahaina
2024-04-16 00:03:08 +03:00
This is the 5.4.257 stable release
2023-09-30 11:33:27 +00:00
This is the 5.4.290 stable release
2025-02-05 17:00:16 +00:00
Merge tag 'ASB-2025-04-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-04-23 17:49:35 +03:00
fat: fix uninitialized variable
2024-11-08 16:20:47 +01:00
Merge tag 'ASB-2025-05-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-05-18 08:00:20 +00:00
This is the 5.4.290 stable release
2025-02-05 17:00:16 +00:00
This is the 5.4.290 stable release
2025-02-05 17:00:16 +00:00
Merge 5.4.287 into android11-5.4-lts
2024-12-16 10:50:16 +00:00
fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super
2024-03-06 14:36:10 +00:00
ANDROID: incremental fs: Evict inodes before freeing mount data
2023-04-05 13:07:49 -07:00
This is the 5.4.270 stable release
2024-03-05 14:53:04 +00:00
isofs: fix KMSAN uninit-value bug in do_isofs_readdir()
2025-04-10 14:29:41 +02:00
jbd2: flush filesystem device before updating tail sequence
2025-02-01 18:18:44 +01:00
Merge 5.4.287 into android11-5.4-lts
2024-12-16 10:50:16 +00:00
This is the 5.4.292 stable release
2025-04-11 08:16:05 +00:00
This is the 5.4.269 stable release
2024-02-24 15:47:08 +00:00
fs: lockd: avoid possible wrong NULL parameter
2023-09-23 10:59:48 +02:00
minix: fix bug when opening a file with O_DIRECT
2022-04-15 14:18:35 +02:00
This is the 5.4.289 stable release
2025-01-10 07:30:07 +00:00
NFSD: Reset cb_seq_status after NFS4ERR_DELAY
2025-03-13 12:43:01 +01:00
nilfs2: protect access to buffers with no active references
2025-03-13 12:43:18 +01:00
Revert "fs/nls: make load_nls() take a const parameter"
2023-09-30 15:41:35 +00:00
This is the 5.4.251 stable release
2023-08-03 10:56:28 +00:00
ntfs: check overflow when iterating ATTR_RECORDs
2022-11-25 17:42:22 +01:00
This is the 5.4.292 stable release
2025-04-11 08:16:05 +00:00
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
openpromfs: finish conversion to the new mount API
2024-06-16 13:28:32 +02:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
Merge tag 'ASB-2025-02-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2025-02-06 22:53:05 +02:00
BACKPORT: FROMGIT: userfaultfd: add minor fault registration mode
2025-05-18 08:08:42 +00:00
Merge tag 'ASB-2024-06-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2024-06-22 17:58:09 +03:00
quota: flush quota_release_work upon quota writeback
2024-12-14 19:44:42 +01:00
This is the 5.4.257 stable release
2023-09-30 11:33:27 +00:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
This is the 5.4.275 stable release
2024-05-15 16:00:38 +00:00
sysv: don't call sb_bread() with pointers_lock held
2024-04-13 12:51:38 +02:00
This is the 5.4.257 stable release
2023-09-30 11:33:27 +00:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
udf: Fix use of check_add_overflow() with mixed type arguments
2025-03-13 12:42:51 +01:00
Revert "unicode: Don't special case ignorable code points"
2024-12-14 19:44:55 +01:00
This is the 5.4.257 stable release
2023-09-30 11:33:27 +00:00
This is the 5.4.288 stable release
2024-12-27 16:16:36 +00:00
BACKPORT: FROMLIST: Revert "mremap: don't allow MREMAP_DONTUNMAP on special_mappings and aio"
2025-05-18 08:08:42 +00:00
UPSTREAM: fs: anon_inodes: rephrase to appropriate kernel-doc
2025-02-20 04:17:46 +02:00
attr: block mode changes of symlinks
2023-09-23 11:00:06 +02:00
binfmt: Move install_exec_creds after setup_new_exec to match binfmt_elf
2023-01-18 11:41:46 +01:00
fs: binfmt_elf_efpic: don't use missing interpreter's properties
2024-09-04 13:14:54 +02:00
binfmt_flat: Fix integer overflow bug on 32 bit systems
2025-03-13 12:43:07 +01:00
binfmt_misc: cleanup on filesystem umount
2024-09-04 13:14:53 +02:00
block: Don't invalidate pagecache for invalid falloc modes
2024-01-08 11:29:48 +01:00
Merge tag 'ASB-2023-02-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2023-02-08 18:28:38 +02:00
chardev: fix error handling in cdev_device_add()
2023-01-18 11:41:25 +01:00
lsm: new security_file_ioctl_compat() hook
2024-02-23 08:25:15 +01:00
dax: fix cache flush on PMD-mapped pages
2022-06-14 18:11:41 +02:00
fs: better handle deep ancestor chains in is_subdir()
2024-07-27 10:38:32 +02:00
eventfd: prevent underflow for eventfd semaphores
2023-09-23 10:59:40 +02:00
This is the 5.4.289 stable release
2025-01-10 07:30:07 +00:00
This is the 5.4.285 stable release
2024-11-09 11:29:17 +00:00
fs: Fix file_set_fowner LSM hook inconsistencies
2024-11-08 16:20:34 +01:00
do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
2024-03-26 18:22:13 -04:00
fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE
2024-09-04 13:14:50 +02:00
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
2022-05-25 09:14:34 +02:00
writeback: fix call of incorrect macro
2023-05-17 11:35:58 +02:00
fs: avoid empty option when generating legacy mount string
2023-07-27 08:37:25 +02:00
This is the 5.4.285 stable release
2024-11-09 11:29:17 +00:00
fs: Establish locking order for unrelated directories
2023-07-27 08:37:26 +02:00
This is the 5.4.278 stable release
2024-06-18 14:18:49 +00:00
UPSTREAM: fs: add LSM-supporting anon-inode interface
2025-02-20 04:17:45 +02:00
filelock: Correct the filelock owner in fcntl_setlk/fcntl_setlk64
2024-09-04 13:15:02 +02:00
mbcache: Avoid nesting of cache->c_list_lock under bit locks
2023-01-18 11:41:59 +01:00
This is the 5.4.292 stable release
2025-04-11 08:16:05 +00:00
This is the 5.4.285 stable release
2024-11-09 11:29:17 +00:00
This is the 5.4.279 stable release
2024-07-08 13:55:50 +00:00
This is the 5.4.229 stable release
2023-01-18 12:21:41 +00:00
fs/select: rework stack allocation hack for clang
2024-03-26 18:22:13 -04:00
Revert "io_uring: disable polling pollfree files"
2022-09-21 15:47:16 +02:00
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
2022-10-17 17:24:32 +02:00
This is the 5.4.191 stable release
2022-04-27 14:24:26 +02:00
statfs: enforce statfs[64] structure initialization
2023-05-30 12:44:07 +01:00
fs: explicitly unregister per-superblock BDIs
2024-11-08 16:20:26 +01:00
This is the 5.4.263 stable release
2023-12-11 12:08:17 +00:00
UPSTREAM: mm: introduce FAULT_FLAG_INTERRUPTIBLE
2025-05-18 08:08:42 +00:00
This is the 5.4.229 stable release
2023-01-18 12:21:41 +00:00
dc8785e150