Pavel Begunkov d60b5fbc1c io_uring: fix current->mm NULL dereference on exit ... Don't reissue requests from io_iopoll_reap_events(), the task may not have mm, which ends up with NULL. It's better to kill everything off on exit anyway. [ 677.734670] RIP: 0010:io_iopoll_complete+0x27e/0x630 ... [ 677.734679] Call Trace: [ 677.734695] ? __send_signal+0x1f2/0x420 [ 677.734698] ? _raw_spin_unlock_irqrestore+0x24/0x40 [ 677.734699] ? send_signal+0xf5/0x140 [ 677.734700] io_iopoll_getevents+0x12f/0x1a0 [ 677.734702] io_iopoll_reap_events.part.0+0x5e/0xa0 [ 677.734703] io_ring_ctx_wait_and_kill+0x132/0x1c0 [ 677.734704] io_uring_release+0x20/0x30 [ 677.734706] __fput+0xcd/0x230 [ 677.734707] ____fput+0xe/0x10 [ 677.734709] task_work_run+0x67/0xa0 [ 677.734710] do_exit+0x35d/0xb70 [ 677.734712] do_group_exit+0x43/0xa0 [ 677.734713] get_signal+0x140/0x900 [ 677.734715] do_signal+0x37/0x780 [ 677.734717] ? enqueue_hrtimer+0x41/0xb0 [ 677.734718] ? recalibrate_cpu_khz+0x10/0x10 [ 677.734720] ? ktime_get+0x3e/0xa0 [ 677.734721] ? lapic_next_deadline+0x26/0x30 [ 677.734723] ? tick_program_event+0x4d/0x90 [ 677.734724] ? __hrtimer_get_next_event+0x4d/0x80 [ 677.734726] __prepare_exit_to_usermode+0x126/0x1c0 [ 677.734741] prepare_exit_to_usermode+0x9/0x40 [ 677.734742] idtentry_exit_cond_rcu+0x4c/0x60 [ 677.734743] sysvec_reschedule_ipi+0x92/0x160 [ 677.734744] ? asm_sysvec_reschedule_ipi+0xa/0x20 [ 677.734745] asm_sysvec_reschedule_ipi+0x12/0x20 Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2020-06-25 07:20:43 -06:00
..
9p
adfs	docs: filesystems: fix renamed references	2020-04-20 15:45:22 -06:00
affs	docs: filesystems: fix renamed references	2020-04-20 15:45:22 -06:00
afs	afs: Fix hang on rmmod due to outstanding timer	2020-06-20 12:01:58 -07:00
autofs
befs
bfs	docs: filesystems: fix renamed references	2020-04-20 15:45:22 -06:00
btrfs	for-5.8-part2-tag	2020-06-14 09:47:25 -07:00
cachefiles	A fair amount of stuff this time around, dominated by yet another massive	2020-06-01 15:45:27 -07:00
ceph	ceph: skip checking caps when session reconnecting and releasing reqs	2020-06-01 13:22:53 +02:00
cifs	smb3: Add debug message for new file creation with idsfromsid mount option	2020-06-12 16:31:06 -05:00
coda	docs: filesystems: convert coda.txt to ReST	2020-05-05 09:22:21 -06:00
configfs	A fair amount of stuff this time around, dominated by yet another massive	2020-06-01 15:45:27 -07:00
cramfs	docs: filesystems: fix renamed references	2020-04-20 15:45:22 -06:00
crypto	fscrypt updates for 5.8	2020-06-01 12:10:17 -07:00
debugfs	Merge 5.7-rc3 into driver-core-next	2020-04-27 09:34:55 +02:00
devpts
dlm	dlm for 5.8	2020-06-05 16:43:16 -07:00
ecryptfs	A fair amount of stuff this time around, dominated by yet another massive	2020-06-01 15:45:27 -07:00
efivarfs
efs
erofs	Changes since last update:	2020-06-02 20:16:55 -07:00
exfat	Description for this pull request:	2020-06-09 11:24:59 -07:00
exportfs
ext2	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
ext4	This is the second round of ext4 commits for 5.8 merge window. It	2020-06-15 09:32:10 -07:00
f2fs	f2fs-for-5.8-rc1	2020-06-09 11:28:59 -07:00
fat	fat: improve the readahead for FAT entries	2020-06-04 19:06:25 -07:00
freevxfs
fscache	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2020-06-03 16:27:18 -07:00
fuse	fuse update for 5.8	2020-06-09 15:48:24 -07:00
gfs2	Changes in gfs2:	2020-06-08 12:47:09 -07:00
hfs	for-5.8/block-2020-06-01	2020-06-02 15:29:19 -07:00
hfsplus	block: remove the error_sector argument to blkdev_issue_flush	2020-05-22 08:45:46 -06:00
hostfs
hpfs	hpfs: fix warning due to superfluous semicolon	2020-06-06 10:08:17 -07:00
hugetlbfs	mmap locking API: convert mmap_sem API comments	2020-06-09 09:39:14 -07:00
iomap	New code for 5.8:	2020-06-13 12:44:30 -07:00
isofs	for-5.8/block-2020-06-01	2020-06-02 15:29:19 -07:00
jbd2	This is the second round of ext4 commits for 5.8 merge window. It	2020-06-15 09:32:10 -07:00
jffs2	jffs2: Replace zero-length array with flexible-array	2020-06-15 23:08:31 -05:00
jfs	Replace zero-length array in JFS	2020-06-02 20:11:35 -07:00
kernfs	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
lockd
minix
nfs	NFS Client Updates for Linux 5.8	2020-06-11 12:22:41 -07:00
nfs_common
nfsd	Highlights:	2020-06-11 10:33:13 -07:00
nilfs2	nilfs2: fix null pointer dereference at nilfs_segctor_do_construct()	2020-06-10 19:14:17 -07:00
nls	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
notify	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
ntfs	Merge branch 'akpm' (patches from Andrew)	2020-06-02 12:21:36 -07:00
ocfs2	ocfs2: fix build failure when TCP/IP is disabled	2020-06-11 18:17:47 -07:00
omfs	fs: convert mpage_readpages to mpage_readahead	2020-06-02 10:59:07 -07:00
openpromfs
orangefs	orangefs: a conversion and a cleanup...	2020-06-05 16:44:36 -07:00
overlayfs	overlayfs update for 5.8	2020-06-09 15:40:50 -07:00
proc	A few fixes and small cleanups for tracing:	2020-06-20 13:17:47 -07:00
pstore	Merge branch 'uaccess.__copy_from_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-06-01 16:18:46 -07:00
qnx4
qnx6	fs: convert mpage_readpages to mpage_readahead	2020-06-02 10:59:07 -07:00
quota	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
ramfs
reiserfs	\n	2020-06-04 13:53:10 -07:00
romfs	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
squashfs	Squashfs: Replace zero-length array with flexible-array	2020-06-15 23:08:32 -05:00
sysfs	RDMA 5.8 merge window pull request	2020-06-05 14:05:57 -07:00
sysv	docs: filesystems: fix renamed references	2020-04-20 15:45:22 -06:00
tracefs
ubifs	mm: remove the pgprot argument to __vmalloc	2020-06-02 10:59:11 -07:00
udf	for-5.8/block-2020-06-01	2020-06-02 15:29:19 -07:00
ufs
unicode
vboxsf	vboxsf: don't use the source name in the bdi name	2020-05-07 08:45:47 -06:00
verity	fs-verity: remove unnecessary extern keywords	2020-05-12 16:44:00 -07:00
xfs	Fixes for 5.8:	2020-06-13 12:40:24 -07:00
zonefs	zonefs changes for 5.8	2020-06-04 13:50:13 -07:00
aio.c	aio: Replace zero-length array with flexible-array	2020-06-15 23:08:25 -05:00
anon_inodes.c
attr.c
bad_inode.c	fs: move the fiemap definitions out of fs.h	2020-06-03 23:16:55 -04:00
binfmt_aout.c	exec: Rename flush_old_exec begin_new_exec	2020-05-07 16:55:47 -05:00
binfmt_elf_fdpic.c	Merge branch 'uaccess.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-06-10 16:02:54 -07:00
binfmt_elf.c	Merge branch 'uaccess.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-06-10 16:02:54 -07:00
binfmt_em86.c	Merge branch 'akpm' (patches from Andrew)	2020-06-04 19:18:29 -07:00
binfmt_flat.c	Merge branch 'uaccess.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-06-10 16:02:54 -07:00
binfmt_misc.c	Merge branch 'akpm' (patches from Andrew)	2020-06-04 19:18:29 -07:00
binfmt_script.c	Merge branch 'akpm' (patches from Andrew)	2020-06-04 19:18:29 -07:00
block_dev.c	block: make function 'kill_bdev' static	2020-06-18 09:24:35 -06:00
buffer.c	fs/buffer.c: use attach/detach_page_private	2020-06-02 10:59:07 -07:00
char_dev.c	vfs: allow unprivileged whiteout creation	2020-05-14 16:44:23 +02:00
compat_binfmt_elf.c	Split the old READ_IMPLIES_EXEC workaround from executable PT_GNU_STACK	2020-06-05 13:45:21 -07:00
compat.c
coredump.c	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
d_path.c
dax.c	dax,iomap: Add helper dax_iomap_zero() to zero a range	2020-04-02 19:15:03 -07:00
dcache.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2020-06-03 16:27:18 -07:00
dcookies.c
direct-io.c	for-5.8-part2-tag	2020-06-14 09:47:25 -07:00
drop_caches.c	sysctl: pass kernel pointers to ->proc_handler	2020-04-27 02:07:40 -04:00
eventfd.c	eventfd: convert to f_op->read_iter()	2020-05-06 22:33:43 -04:00
eventpoll.c	epoll: call final ep_events_available() check under the lock	2020-05-14 10:00:35 -07:00
exec.c	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
fcntl.c
fhandle.c
file_table.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2020-06-03 16:27:18 -07:00
file.c	fix multiplication overflow in copy_fdtable()	2020-05-19 18:29:36 -04:00
filesystems.c	fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once()	2020-04-10 15:36:22 -07:00
fs_context.c	vfs: don't parse "silent" option	2020-05-14 16:44:25 +02:00
fs_parser.c	fs_parse: remove pr_notice() about each validation	2020-04-02 09:35:26 -07:00
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c	A lot of bug fixes and cleanups for ext4, including:	2020-06-05 16:19:28 -07:00
fsopen.c
inode.c	AFS Changes	2020-06-05 16:26:36 -07:00
internal.h	A lot of bug fixes and cleanups for ext4, including:	2020-06-05 16:19:28 -07:00
io_uring.c	io_uring: fix current->mm NULL dereference on exit	2020-06-25 07:20:43 -06:00
io-wq.c	io_uring: cancel all task's requests on exit	2020-06-15 08:51:34 -06:00
io-wq.h	io_uring: cancel by ->task not pid	2020-06-15 08:51:38 -06:00
ioctl.c	fs: remove the access_ok() check in ioctl_fiemap	2020-06-03 23:16:55 -04:00
Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
Kconfig.binfmt	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
libfs.c	block: remove the error_sector argument to blkdev_issue_flush	2020-05-22 08:45:46 -06:00
locks.c	Highlights:	2020-06-11 10:33:13 -07:00
Makefile
mbcache.c
mount.h	proc/mounts: add cursor	2020-05-14 16:44:24 +02:00
mpage.c	fs: convert mpage_readpages to mpage_readahead	2020-06-02 10:59:07 -07:00
namei.c	vfs: clean up posix_acl_permission() logic aroudn MAY_NOT_BLOCK	2020-06-08 11:04:19 -07:00
namespace.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-06-10 16:09:11 -07:00
no-block.c
nsfs.c	nsproxy: attach to namespaces via pidfds	2020-05-13 11:41:22 +02:00
open.c	Merge branch 'akpm' (patches from Andrew)	2020-06-02 12:21:36 -07:00
pipe.c	Notifications over pipes + Keyring notifications	2020-06-13 09:56:21 -07:00
pnode.c	propagate_one(): mnt_set_mountpoint() needs mount_lock	2020-04-27 10:37:14 -04:00
pnode.h
posix_acl.c	vfs: clean up posix_acl_permission() logic aroudn MAY_NOT_BLOCK	2020-06-08 11:04:19 -07:00
proc_namespace.c	Merge branch 'proc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2020-06-04 13:54:34 -07:00
read_write.c	powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro	2020-04-03 00:09:59 +11:00
readdir.c	readdir.c: get rid of the last __put_user(), drop now-useless access_ok()	2020-05-01 20:29:54 -04:00
select.c	pselect6() and friends: take handling the combined 6th/7th args into helper	2020-05-29 19:10:42 -04:00
seq_file.c	fs/seq_file.c: seq_read: Update pr_info_ratelimited	2020-06-04 19:06:25 -07:00
signalfd.c
splice.c	Notifications over pipes + Keyring notifications	2020-06-13 09:56:21 -07:00
stack.c
stat.c	New code for 5.8:	2020-06-02 19:45:12 -07:00
statfs.c
super.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2020-06-10 16:09:11 -07:00
sync.c	overlayfs update for 5.8	2020-06-09 15:40:50 -07:00
timerfd.c
userfaultfd.c	mmap locking API: convert mmap_sem comments	2020-06-09 09:39:14 -07:00
utimes.c	utimensat: AT_EMPTY_PATH support	2020-05-14 16:44:24 +02:00
xattr.c	xattr: fix uninitialized out-param	2020-04-09 15:33:09 -04:00