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This is the 5.2.30 stable release
# gpg: Signature made Sun 19 Jan 2020 03:13:54 PM EST
# gpg: using RSA key EBCE84042C07D1D6
# gpg: Can't check signature: No public key
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commit dcb77e4b274b8f13ac6482dfb09160cd2fae9a40 upstream.
The driver misses calling destroy_workqueue in remove like what is done
when probe fails.
Add the missed calls to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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commit 8e9c523016cf9983b295e4bc659183d1fa6ef8e0 upstream.
There are two callers of this function and they both unlock the mutex so
this ends up being a double unlock.
Fixes: 44ed167da748 ("drbd: rcu_read_lock() and rcu_dereference() for tconn->net_conf")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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This is the 5.2.29 stable release
# gpg: Signature made Fri 10 Jan 2020 09:45:31 AM EST
# gpg: using RSA key EBCE84042C07D1D6
# gpg: Can't check signature: No public key
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commit 03bf73c315edca28f47451913177e14cd040a216 upstream.
In nbd_add_socket when krealloc succeeds, if nsock's allocation fail the
reallocted memory is leak. The correct behaviour should be assigning the
reallocted memory to config->socks right after success.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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commit dff10bbea4be47bdb615b036c834a275b7c68133 upstream.
Before returning NULL, put the sock first.
Cc: stable@vger.kernel.org
Fixes: cf1b2326b734 ("nbd: verify socket is supported during setup")
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Sun Ke <sunke32@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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This is the 5.2.27 stable release
# gpg: Signature made Mon 16 Dec 2019 10:43:54 PM EST
# gpg: using RSA key EBCE84042C07D1D6
# gpg: Can't check signature: No public key
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commit 7ce23e8e0a9cd38338fc8316ac5772666b565ca9 upstream.
We hit the following warning in production
print_req_error: I/O error, dev nbd0, sector 7213934408 flags 80700
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 25 PID: 32407 at lib/refcount.c:190 refcount_sub_and_test_checked+0x53/0x60
Workqueue: knbd-recv recv_work [nbd]
RIP: 0010:refcount_sub_and_test_checked+0x53/0x60
Call Trace:
blk_mq_free_request+0xb7/0xf0
blk_mq_complete_request+0x62/0xf0
recv_work+0x29/0xa1 [nbd]
process_one_work+0x1f5/0x3f0
worker_thread+0x2d/0x3d0
? rescuer_thread+0x340/0x340
kthread+0x111/0x130
? kthread_create_on_node+0x60/0x60
ret_from_fork+0x1f/0x30
---[ end trace b079c3c67f98bb7c ]---
This was preceded by us timing out everything and shutting down the
sockets for the device. The problem is we had a request in the queue at
the same time, so we completed the request twice. This can actually
happen in a lot of cases, we fail to get a ref on our config, we only
have one connection and just error out the command, etc.
Fix this by checking cmd->status in nbd_read_stat. We only change this
under the cmd->lock, so we are safe to check this here and see if we've
already error'ed this command out, which would indicate that we've
completed it as well.
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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commit de6346ecbc8f5591ebd6c44ac164e8b8671d71d7 upstream.
We already do this for the most part, except in timeout and clear_req.
For the timeout case we take the lock after we grab a ref on the config,
but that isn't really necessary because we're safe to touch the cmd at
this point, so just move the order around.
For the clear_req cause this is initiated by the user, so again is safe.
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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This is the 5.2.26 stable release
# gpg: Signature made Tue 10 Dec 2019 01:52:47 PM EST
# gpg: using RSA key EBCE84042C07D1D6
# gpg: Can't check signature: No public key
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commit 862488105b84ca744b3d8ff131e0fcfe10644be1 upstream.
1. nbd_put takes the mutex and drops nbd->ref to 0. It then does
idr_remove and drops the mutex.
2. nbd_genl_connect takes the mutex. idr_find/idr_for_each fails
to find an existing device, so it does nbd_dev_add.
3. just before the nbd_put could call nbd_dev_remove or not finished
totally, but if nbd_dev_add try to add_disk, we can hit:
debugfs: Directory 'nbd1' with parent 'block' already present!
This patch will make sure all the disk add/remove stuff are done
by holding the nbd_index_mutex lock.
Reported-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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This is the 5.2.24 stable release
# gpg: Signature made Mon 25 Nov 2019 12:09:44 PM EST
# gpg: using RSA key EBCE84042C07D1D6
# gpg: Can't check signature: No public key
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commit f7daefe4231e57381d92c2e2ad905a899c28e402 upstream.
CPU0: CPU1:
backing_dev_show backing_dev_store
...... ......
file = zram->backing_dev;
down_read(&zram->init_lock); down_read(&zram->init_init_lock)
file_path(file, ...); zram->backing_dev = backing_dev;
up_read(&zram->init_lock); up_read(&zram->init_lock);
gets the value of zram->backing_dev too early in backing_dev_show, which
resultin the value being NULL at the beginning, and not NULL later.
backtrace:
d_path+0xcc/0x174
file_path+0x10/0x18
backing_dev_show+0x40/0xb4
dev_attr_show+0x20/0x54
sysfs_kf_seq_show+0x9c/0x10c
kernfs_seq_show+0x28/0x30
seq_read+0x184/0x488
kernfs_fop_read+0x5c/0x1a4
__vfs_read+0x44/0x128
vfs_read+0xa0/0x138
SyS_read+0x54/0xb4
Link: http://lkml.kernel.org/r/1571046839-16814-1-git-send-email-chenwandun@huawei.com
Signed-off-by: Chenwandun <chenwandun@huawei.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: <stable@vger.kernel.org> [4.14+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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commit 85560117d00f5d528e928918b8f61cadcefff98b upstream.
The loop driver assumes that if the passed in fd is opened with
O_DIRECT, the caller wants to use direct I/O on the loop device.
However, if the underlying block device has a different block size than
the loop block queue, direct I/O can't be enabled. Instead of requiring
userspace to manually change the blocksize and re-enable direct I/O,
just change the queue block sizes to match, as well as the io_min size.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martijn Coenen <maco@android.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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This is the 5.2.22 stable release
# gpg: Signature made Sat 09 Nov 2019 08:56:23 PM EST
# gpg: using RSA key EBCE84042C07D1D6
# gpg: Can't check signature: No public key
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commit cf1b2326b734896734c6e167e41766f9cee7686a upstream.
nbd requires socket families to support the shutdown method so the nbd
recv workqueue can be woken up from its sock_recvmsg call. If the socket
does not support the callout we will leave recv works running or get hangs
later when the device or module is removed.
This adds a check during socket connection/reconnection to make sure the
socket being passed in supports the needed callout.
Reported-by: syzbot+24c12fa8d218ed26011a@syzkaller.appspotmail.com
Fixes: e9e006f5fcf2 ("nbd: fix max number of supported devs")
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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commit e9e006f5fcf2bab59149cb38a48a4817c1b538b4 upstream.
This fixes a bug added in 4.10 with commit:
commit 9561a7ade0c205bc2ee035a2ac880478dcc1a024
Author: Josef Bacik <jbacik@fb.com>
Date: Tue Nov 22 14:04:40 2016 -0500
nbd: add multi-connection support
that limited the number of devices to 256. Before the patch we could
create 1000s of devices, but the patch switched us from using our
own thread to using a work queue which has a default limit of 256
active works.
The problem is that our recv_work function sits in a loop until
disconnection but only handles IO for one connection. The work is
started when the connection is started/restarted, but if we end up
creating 257 or more connections, the queue_work call just queues
connection257+'s recv_work and that waits for connection 1 - 256's
recv_work to be disconnected and that work instance completing.
Instead of reverting back to kthreads, this has us allocate a
workqueue_struct per device, so we can block in the work.
Cc: stable@vger.kernel.org
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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This is the 5.2.20 stable release
# gpg: Signature made Mon 07 Oct 2019 12:59:42 PM EDT
# gpg: using RSA key 647F28654894E3BD457199BE38DBBDC86092693E
# gpg: Can't check signature: No public key
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This is the 5.2.19 stable release
# gpg: Signature made Sat 05 Oct 2019 07:14:17 AM EDT
# gpg: using RSA key 647F28654894E3BD457199BE38DBBDC86092693E
# gpg: Can't check signature: No public key
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[ Upstream commit eb09b3cc464d2c3bbde9a6648603c8d599ea8582 ]
Anatoly reports that he gets the below warning when booting -git on
a sparc64 box on debian unstable:
...
[ 13.352975] aes_sparc64: Using sparc64 aes opcodes optimized AES
implementation
[ 13.428002] ------------[ cut here ]------------
[ 13.428081] WARNING: CPU: 21 PID: 586 at
drivers/block/pktcdvd.c:2597 pkt_setup_dev+0x2e4/0x5a0 [pktcdvd]
[ 13.428147] Attempt to register a non-SCSI queue
[ 13.428184] Modules linked in: pktcdvd libdes cdrom aes_sparc64
n2_rng md5_sparc64 sha512_sparc64 rng_core sha256_sparc64 flash
sha1_sparc64 ip_tables x_tables ipv6 crc_ccitt nf_defrag_ipv6 autofs4
ext4 crc16 mbcache jbd2 raid10 raid456 async_raid6_recov async_memcpy
async_pq async_xor xor async_tx raid6_pq raid1 raid0 multipath linear
md_mod crc32c_sparc64
[ 13.428452] CPU: 21 PID: 586 Comm: pktsetup Not tainted
5.3.0-10169-g574cc4539762 #1234
[ 13.428507] Call Trace:
[ 13.428542] [00000000004635c0] __warn+0xc0/0x100
[ 13.428582] [0000000000463634] warn_slowpath_fmt+0x34/0x60
[ 13.428626] [000000001045b244] pkt_setup_dev+0x2e4/0x5a0 [pktcdvd]
[ 13.428674] [000000001045ccf4] pkt_ctl_ioctl+0x94/0x220 [pktcdvd]
[ 13.428724] [00000000006b95c8] do_vfs_ioctl+0x628/0x6e0
[ 13.428764] [00000000006b96c8] ksys_ioctl+0x48/0x80
[ 13.428803] [00000000006b9714] sys_ioctl+0x14/0x40
[ 13.428847] [0000000000406294] linux_sparc_syscall+0x34/0x44
[ 13.428890] irq event stamp: 4181
[ 13.428924] hardirqs last enabled at (4189): [<00000000004e0a74>]
console_unlock+0x634/0x6c0
[ 13.428984] hardirqs last disabled at (4196): [<00000000004e0540>]
console_unlock+0x100/0x6c0
[ 13.429048] softirqs last enabled at (3978): [<0000000000b2e2d8>]
__do_softirq+0x498/0x520
[ 13.429110] softirqs last disabled at (3967): [<000000000042cfb4>]
do_softirq_own_stack+0x34/0x60
[ 13.429172] ---[ end trace 2220ca468f32967d ]---
[ 13.430018] pktcdvd: setup of pktcdvd device failed
[ 13.455589] des_sparc64: Using sparc64 des opcodes optimized DES
implementation
[ 13.515334] camellia_sparc64: Using sparc64 camellia opcodes
optimized CAMELLIA implementation
[ 13.522856] pktcdvd: setup of pktcdvd device failed
[ 13.529327] pktcdvd: setup of pktcdvd device failed
[ 13.532932] pktcdvd: setup of pktcdvd device failed
[ 13.536165] pktcdvd: setup of pktcdvd device failed
[ 13.539372] pktcdvd: setup of pktcdvd device failed
[ 13.542834] pktcdvd: setup of pktcdvd device failed
[ 13.546536] pktcdvd: setup of pktcdvd device failed
[ 15.431071] XFS (dm-0): Mounting V5 Filesystem
...
Apparently debian auto-attaches any cdrom like device to pktcdvd, which
can lead to the above warning. There's really no reason to warn for this
situation, kill it.
Reported-by: Anatoly Pugachev <matorola@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 887e975c4172d0d5670c39ead2f18ba1e4ec8133 ]
Fix bug added with the patch:
commit 8f3ea35929a0806ad1397db99a89ffee0140822a
Author: Josef Bacik <josef@toxicpanda.com>
Date: Mon Jul 16 12:11:35 2018 -0400
nbd: handle unexpected replies better
where if the timeout handler runs when the completion path is and we fail
to grab the mutex in the timeout handler we will leave a config reference
and cannot free the config later.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit fdbe4eeeb1aac219b14f10c0ed31ae5d1123e9b8 ]
Enabling Direct I/O with loop devices helps reducing memory usage by
avoiding double caching. 32 bit applications running on 64 bits systems
are currently not able to request direct I/O because is missing from the
lo_compat_ioctl.
This patch fixes the compatibility issue mentioned above by exporting
LOOP_SET_DIRECT_IO as additional lo_compat_ioctl() entry.
The input argument for this ioctl is a single long converted to a 1-bit
boolean, so compatibility is preserved.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Alessio Balsini <balsini@android.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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This is the 5.2.17 stable release
# gpg: Signature made Sat 21 Sep 2019 01:18:51 AM EDT
# gpg: using RSA key 647F28654894E3BD457199BE38DBBDC86092693E
# gpg: Can't check signature: No public key
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commit 52f6f9d74f31078964ca1574f7bb612da7877ac8 upstream.
As sparse points out, these two copy_from_user() should actually be
copy_to_user().
Fixes: 229b53c9bf4e ("take floppy compat ioctls to sodding floppy.c")
Cc: stable@vger.kernel.org
Acked-by: Alexander Popov <alex.popov@linux.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This is the 5.2.12 stable release
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This is the 5.2.11 stable release
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[ Upstream commit ae78ca3cf3d9e9f914bfcd0bc5c389ff18b9c2e0 ]
In read_per_ring_refs(), after 'req' and related memory regions are
allocated, xen_blkif_map() is invoked to map the shared frame, irq, and
etc. However, if this mapping process fails, no cleanup is performed,
leading to memory leaks. To fix this issue, invoke the cleanup before
returning the error.
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 430380b4637aec646996b4aef67ad417593923b2 ]
Since commit 3582dd291788 ("aoe: convert aoeblk to blk-mq"), aoedev_downdev
has had the possibility of sleeping and causing the following crash.
BUG: scheduling while atomic: rmmod/2242/0x00000003
Modules linked in: aoe
Preemption disabled at:
[<ffffffffc01d95e5>] flush+0x95/0x4a0 [aoe]
CPU: 7 PID: 2242 Comm: rmmod Tainted: G I 5.2.3 #1
Hardware name: Intel Corporation S5520HC/S5520HC, BIOS S5500.86B.01.10.0025.030220091519 03/02/2009
Call Trace:
dump_stack+0x4f/0x6a
? flush+0x95/0x4a0 [aoe]
__schedule_bug.cold+0x44/0x54
__schedule+0x44f/0x680
schedule+0x44/0xd0
blk_mq_freeze_queue_wait+0x46/0xb0
? wait_woken+0x80/0x80
blk_mq_freeze_queue+0x1b/0x20
aoedev_downdev+0x111/0x160 [aoe]
flush+0xff/0x4a0 [aoe]
aoedev_exit+0x23/0x30 [aoe]
aoe_exit+0x35/0x948 [aoe]
__se_sys_delete_module+0x183/0x210
__x64_sys_delete_module+0x16/0x20
do_syscall_64+0x4d/0x130
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f24e0043b07
Code: 73 01 c3 48 8b 0d 89 73 0b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f
1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 73 01 c3 48 8b 0d 59 73 0b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe18f7f1e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f24e0043b07
RDX: 000000000000000a RSI: 0000000000000800 RDI: 0000555c3ecf87c8
RBP: 00007ffe18f7f1f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00007f24e00b4ac0 R11: 0000000000000206 R12: 00007ffe18f7f238
R13: 00007ffe18f7f410 R14: 00007ffe18f80e73 R15: 0000555c3ecf8760
This patch, handling in the same way of pass two, unlocks the locks and
restart pass one after aoedev_downdev is done.
Fixes: 3582dd291788 ("aoe: convert aoeblk to blk-mq")
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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This is the 5.2.9 stable release
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[ Upstream commit 77ce56e2bfaa64127ae5e23ef136c0168b818777 ]
Building with clang and KASAN, we get a warning about an overly large
stack frame on 32-bit architectures:
drivers/block/drbd/drbd_receiver.c:921:31: error: stack frame size of 1280 bytes in function 'conn_connect'
[-Werror,-Wframe-larger-than=]
We already allocate other data dynamically in this function, so
just do the same for the shash descriptor, which makes up most of
this memory.
Link: https://lore.kernel.org/lkml/20190617132440.2721536-1-arnd@arndb.de/
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Roland Kammerer <roland.kammerer@linbit.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit d0a255e795ab976481565f6ac178314b34fbf891 upstream.
A deadlock with this stacktrace was observed.
The loop thread does a GFP_KERNEL allocation, it calls into dm-bufio
shrinker and the shrinker depends on I/O completion in the dm-bufio
subsystem.
In order to fix the deadlock (and other similar ones), we set the flag
PF_MEMALLOC_NOIO at loop thread entry.
PID: 474 TASK: ffff8813e11f4600 CPU: 10 COMMAND: "kswapd0"
#0 [ffff8813dedfb938] __schedule at ffffffff8173f405
#1 [ffff8813dedfb990] schedule at ffffffff8173fa27
#2 [ffff8813dedfb9b0] schedule_timeout at ffffffff81742fec
#3 [ffff8813dedfba60] io_schedule_timeout at ffffffff8173f186
#4 [ffff8813dedfbaa0] bit_wait_io at ffffffff8174034f
#5 [ffff8813dedfbac0] __wait_on_bit at ffffffff8173fec8
#6 [ffff8813dedfbb10] out_of_line_wait_on_bit at ffffffff8173ff81
#7 [ffff8813dedfbb90] __make_buffer_clean at ffffffffa038736f [dm_bufio]
#8 [ffff8813dedfbbb0] __try_evict_buffer at ffffffffa0387bb8 [dm_bufio]
#9 [ffff8813dedfbbd0] dm_bufio_shrink_scan at ffffffffa0387cc3 [dm_bufio]
#10 [ffff8813dedfbc40] shrink_slab at ffffffff811a87ce
#11 [ffff8813dedfbd30] shrink_zone at ffffffff811ad778
#12 [ffff8813dedfbdc0] kswapd at ffffffff811ae92f
#13 [ffff8813dedfbec0] kthread at ffffffff810a8428
#14 [ffff8813dedfbf50] ret_from_fork at ffffffff81745242
PID: 14127 TASK: ffff881455749c00 CPU: 11 COMMAND: "loop1"
#0 [ffff88272f5af228] __schedule at ffffffff8173f405
#1 [ffff88272f5af280] schedule at ffffffff8173fa27
#2 [ffff88272f5af2a0] schedule_preempt_disabled at ffffffff8173fd5e
#3 [ffff88272f5af2b0] __mutex_lock_slowpath at ffffffff81741fb5
#4 [ffff88272f5af330] mutex_lock at ffffffff81742133
#5 [ffff88272f5af350] dm_bufio_shrink_count at ffffffffa03865f9 [dm_bufio]
#6 [ffff88272f5af380] shrink_slab at ffffffff811a86bd
#7 [ffff88272f5af470] shrink_zone at ffffffff811ad778
#8 [ffff88272f5af500] do_try_to_free_pages at ffffffff811adb34
#9 [ffff88272f5af590] try_to_free_pages at ffffffff811adef8
#10 [ffff88272f5af610] __alloc_pages_nodemask at ffffffff811a09c3
#11 [ffff88272f5af710] alloc_pages_current at ffffffff811e8b71
#12 [ffff88272f5af760] new_slab at ffffffff811f4523
#13 [ffff88272f5af7b0] __slab_alloc at ffffffff8173a1b5
#14 [ffff88272f5af880] kmem_cache_alloc at ffffffff811f484b
#15 [ffff88272f5af8d0] do_blockdev_direct_IO at ffffffff812535b3
#16 [ffff88272f5afb00] __blockdev_direct_IO at ffffffff81255dc3
#17 [ffff88272f5afb30] xfs_vm_direct_IO at ffffffffa01fe3fc [xfs]
#18 [ffff88272f5afb90] generic_file_read_iter at ffffffff81198994
#19 [ffff88272f5afc50] __dta_xfs_file_read_iter_2398 at ffffffffa020c970 [xfs]
#20 [ffff88272f5afcc0] lo_rw_aio at ffffffffa0377042 [loop]
#21 [ffff88272f5afd70] loop_queue_work at ffffffffa0377c3b [loop]
#22 [ffff88272f5afe60] kthread_worker_fn at ffffffff810a8a0c
#23 [ffff88272f5afec0] kthread at ffffffff810a8428
#24 [ffff88272f5aff50] ret_from_fork at ffffffff81745242
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This is the 5.2.7 stable release
|
|
commit 2b5c8f0063e4b263cf2de82029798183cf85c320 upstream.
Commit abbbdf12497d ("replace kill_bdev() with __invalidate_device()")
once did this, but 29eaadc03649 ("nbd: stop using the bdev everywhere")
resurrected kill_bdev() and it has been there since then. So buffer_head
mappings still get killed on a server disconnection, and we can still
hit the BUG_ON on a filesystem on the top of the nbd device.
EXT4-fs (nbd0): mounted filesystem with ordered data mode. Opts: (null)
block nbd0: Receive control failed (result -32)
block nbd0: shutting down sockets
print_req_error: I/O error, dev nbd0, sector 66264 flags 3000
EXT4-fs warning (device nbd0): htree_dirblock_to_tree:979: inode #2: lblock 0: comm ls: error -5 reading directory block
print_req_error: I/O error, dev nbd0, sector 2264 flags 3000
EXT4-fs error (device nbd0): __ext4_get_inode_loc:4690: inode #2: block 283: comm ls: unable to read itable block
EXT4-fs error (device nbd0) in ext4_reserve_inode_write:5894: IO failure
------------[ cut here ]------------
kernel BUG at fs/buffer.c:3057!
invalid opcode: 0000 [#1] SMP PTI
CPU: 7 PID: 40045 Comm: jbd2/nbd0-8 Not tainted 5.1.0-rc3+ #4
Hardware name: Amazon EC2 m5.12xlarge/, BIOS 1.0 10/16/2017
RIP: 0010:submit_bh_wbc+0x18b/0x190
...
Call Trace:
jbd2_write_superblock+0xf1/0x230 [jbd2]
? account_entity_enqueue+0xc5/0xf0
jbd2_journal_update_sb_log_tail+0x94/0xe0 [jbd2]
jbd2_journal_commit_transaction+0x12f/0x1d20 [jbd2]
? __switch_to_asm+0x40/0x70
...
? lock_timer_base+0x67/0x80
kjournald2+0x121/0x360 [jbd2]
? remove_wait_queue+0x60/0x60
kthread+0xf8/0x130
? commit_timeout+0x10/0x10 [jbd2]
? kthread_bind+0x10/0x10
ret_from_fork+0x35/0x40
With __invalidate_device(), I no longer hit the BUG_ON with sync or
unmount on the disconnected device.
Fixes: 29eaadc03649 ("nbd: stop using the bdev everywhere")
Cc: linux-block@vger.kernel.org
Cc: Ratna Manoj Bolla <manoj.br@gmail.com>
Cc: nbd@other.debian.org
Cc: stable@vger.kernel.org
Cc: David Woodhouse <dwmw@amazon.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Munehisa Kamata <kamatam@amazon.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
commit 89e524c04fa966330e2e80ab2bc50b9944c5847a upstream.
Commit 33ec3e53e7b1 ("loop: Don't change loop device under exclusive
opener") made LOOP_SET_FD ioctl acquire exclusive block device reference
while it updates loop device binding. However this can make perfectly
valid mount(2) fail with EBUSY due to racing LOOP_SET_FD holding
temporarily the exclusive bdev reference in cases like this:
for i in {a..z}{a..z}; do
dd if=/dev/zero of=$i.image bs=1k count=0 seek=1024
mkfs.ext2 $i.image
mkdir mnt$i
done
echo "Run"
for i in {a..z}{a..z}; do
mount -o loop -t ext2 $i.image mnt$i &
done
Fix the problem by not getting full exclusive bdev reference in
LOOP_SET_FD but instead just mark the bdev as being claimed while we
update the binding information. This just blocks new exclusive openers
instead of failing them with EBUSY thus fixing the problem.
Fixes: 33ec3e53e7b1 ("loop: Don't change loop device under exclusive opener")
Cc: stable@vger.kernel.org
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
This is the 5.2.3 stable release
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
|
|
[ Upstream commit da99466ac243f15fbba65bd261bfc75ffa1532b6 ]
This fixes a global out-of-bounds read access in the copy_buffer
function of the floppy driver.
The FDDEFPRM ioctl allows one to set the geometry of a disk. The sect
and head fields (unsigned int) of the floppy_drive structure are used to
compute the max_sector (int) in the make_raw_rw_request function. It is
possible to overflow the max_sector. Next, max_sector is passed to the
copy_buffer function and used in one of the memcpy calls.
An unprivileged user could trigger the bug if the device is accessible,
but requires a floppy disk to be inserted.
The patch adds the check for the .sect * .head multiplication for not
overflowing in the set_geometry function.
The bug was found by syzkaller.
Signed-off-by: Denis Efremov <efremov@ispras.ru>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
[ Upstream commit 9b04609b784027968348796a18f601aed9db3789 ]
This fixes the invalid pointer dereference in the drive_name function of
the floppy driver.
The native_format field of the struct floppy_drive_params is used as
floppy_type array index in the drive_name function. Thus, the field
should be checked the same way as the autodetect field.
To trigger the bug, one could use a value out of range and set the drive
parameters with the FDSETDRVPRM ioctl. Next, FDGETDRVTYP ioctl should
be used to call the drive_name. A floppy disk is not required to be
inserted.
CAP_SYS_ADMIN is required to call FDSETDRVPRM.
The patch adds the check for a value of the native_format field to be in
the '0 <= x < ARRAY_SIZE(floppy_type)' range of the floppy_type array
indices.
The bug was found by syzkaller.
Signed-off-by: Denis Efremov <efremov@ispras.ru>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
[ Upstream commit 5635f897ed83fd539df78e98ba69ee91592f9bb8 ]
This fixes a global out-of-bounds read access in the next_valid_format
function of the floppy driver.
The values from autodetect field of the struct floppy_drive_params are
used as indices for the floppy_type array in the next_valid_format
function 'floppy_type[DP->autodetect[probed_format]].sect'.
To trigger the bug, one could use a value out of range and set the drive
parameters with the FDSETDRVPRM ioctl. A floppy disk is not required to
be inserted.
CAP_SYS_ADMIN is required to call FDSETDRVPRM.
The patch adds the check for values of the autodetect field to be in the
'0 <= x < ARRAY_SIZE(floppy_type)' range of the floppy_type array indices.
The bug was found by syzkaller.
Signed-off-by: Denis Efremov <efremov@ispras.ru>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
[ Upstream commit f3554aeb991214cbfafd17d55e2bfddb50282e32 ]
This fixes a divide by zero error in the setup_format_params function of
the floppy driver.
Two consecutive ioctls can trigger the bug: The first one should set the
drive geometry with such .sect and .rate values for the F_SECT_PER_TRACK
to become zero. Next, the floppy format operation should be called.
A floppy disk is not required to be inserted. An unprivileged user
could trigger the bug if the device is accessible.
The patch checks F_SECT_PER_TRACK for a non-zero value in the
set_geometry function. The proper check should involve a reasonable
upper limit for the .sect and .rate fields, but it could change the
UAPI.
The patch also checks F_SECT_PER_TRACK in the setup_format_params, and
cancels the formatting operation in case of zero.
The bug was found by syzkaller.
Signed-off-by: Denis Efremov <efremov@ispras.ru>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
[ Upstream commit 7602843fd873cae43a444b83b14dfdd114a9659c ]
Dulicate call of null_del_dev() will trigger null pointer error like below.
The reason is a race condition between nullb_device_power_store() and
nullb_group_drop_item().
CPU#0 CPU#1
---------------- -----------------
do_rmdir()
>configfs_rmdir()
>client_drop_item()
>nullb_group_drop_item()
nullb_device_power_store()
>null_del_dev()
>test_and_clear_bit(NULLB_DEV_FL_UP
>null_del_dev()
^^^^^
Duplicated null_dev_dev() triger null pointer error
>clear_bit(NULLB_DEV_FL_UP
The fix could be keep the sequnce of clear NULLB_DEV_FL_UP and null_del_dev().
[ 698.613600] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[ 698.613608] #PF error: [normal kernel read fault]
[ 698.613611] PGD 0 P4D 0
[ 698.613619] Oops: 0000 [#1] SMP PTI
[ 698.613627] CPU: 3 PID: 6382 Comm: rmdir Not tainted 5.0.0+ #35
[ 698.613631] Hardware name: LENOVO 20LJS2EV08/20LJS2EV08, BIOS R0SET33W (1.17 ) 07/18/2018
[ 698.613644] RIP: 0010:null_del_dev+0xc/0x110 [null_blk]
[ 698.613649] Code: 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b eb 97 e8 47 bb 2a e8 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 54 53 <8b> 77 18 48 89 fb 4c 8b 27 48 c7 c7 40 57 1e c1 e8 bf c7 cb e8 48
[ 698.613654] RSP: 0018:ffffb887888bfde0 EFLAGS: 00010286
[ 698.613659] RAX: 0000000000000000 RBX: ffff9d436d92bc00 RCX: ffff9d43a9184681
[ 698.613663] RDX: ffffffffc11e5c30 RSI: 0000000068be6540 RDI: 0000000000000000
[ 698.613667] RBP: ffffb887888bfdf0 R08: 0000000000000001 R09: 0000000000000000
[ 698.613671] R10: ffffb887888bfdd8 R11: 0000000000000f16 R12: ffff9d436d92bc08
[ 698.613675] R13: ffff9d436d94e630 R14: ffffffffc11e5088 R15: ffffffffc11e5000
[ 698.613680] FS: 00007faa68be6540(0000) GS:ffff9d43d14c0000(0000) knlGS:0000000000000000
[ 698.613685] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 698.613689] CR2: 0000000000000018 CR3: 000000042f70c002 CR4: 00000000003606e0
[ 698.613693] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 698.613697] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 698.613700] Call Trace:
[ 698.613712] nullb_group_drop_item+0x50/0x70 [null_blk]
[ 698.613722] client_drop_item+0x29/0x40
[ 698.613728] configfs_rmdir+0x1ed/0x300
[ 698.613738] vfs_rmdir+0xb2/0x130
[ 698.613743] do_rmdir+0x1c7/0x1e0
[ 698.613750] __x64_sys_rmdir+0x17/0x20
[ 698.613759] do_syscall_64+0x5a/0x110
[ 698.613768] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
|
Application of aufs5-base.patch
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
|
|
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
Based on 1 normalized pattern(s):
this file is part of the linux kernel and is made available under
the terms of the gnu general public license version 2
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 28 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.534229504@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
The removal of CONFIG_LBDAF changed the type of sector_t from "unsigned
long" to "u64" aka "unsigned long long" on 64-bit platforms, leading to
a compiler warning regression:
drivers/block/ps3vram.c: In function ‘ps3vram_probe’:
drivers/block/ps3vram.c:770:23: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘sector_t {aka long long unsigned int}’ [-Wformat=]
Fix this by using "%llu" instead.
Fixes: 72deb455b5ec619f ("block: remove CONFIG_LBDAF")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
This patch removes the check in the null_blk_zoned for report zone
command, where it checks for the dev-,>zoned before executing the report
zone.
The null_zone_report() function is a block_device operation callback
which is initialized in the null_blk_main.c and gets called as a part
of blkdev for report zone IOCTL (BLKREPORTZONE).
blkdev_ioctl()
blkdev_report_zones_ioctl()
blkdev_report_zones()
blk_report_zones()
disk->fops->report_zones()
nullb_zone_report();
The null_zone_report() will never get executed on the non-zoned block
device, in the non zoned block device blk_queue_is_zoned() will always
be false which is first check the blkdev_report_zones_ioctl()
before actual low level driver report zone callback is executed.
Here is the detailed scenario:-
1. modprobe null_blk
null_init
null_alloc_dev
dev->zoned = 0
null_add_dev
dev->zoned == 0
so we don't set the q->limits.zoned = BLK_ZONED_HR
2. blkzone report /dev/nullb0
blkdev_ioctl()
blkdev_report_zones_ioctl()
blk_queue_is_zoned()
blk_queue_is_zoned
q->limits.zoned == 0
return false
if (!blk_queue_is_zoned(q)) <--- true
return -ENOTTY;
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"Just one fix for the Xen block frontend driver avoiding allocations
with order > 0"
* tag 'for-linus-5.2b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen-blkfront: switch kcalloc to kvcalloc for large array allocation
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull yet more SPDX updates from Greg KH:
"Another round of SPDX header file fixes for 5.2-rc4
These are all more "GPL-2.0-or-later" or "GPL-2.0-only" tags being
added, based on the text in the files. We are slowly chipping away at
the 700+ different ways people tried to write the license text. All of
these were reviewed on the spdx mailing list by a number of different
people.
We now have over 60% of the kernel files covered with SPDX tags:
$ ./scripts/spdxcheck.py -v 2>&1 | grep Files
Files checked: 64533
Files with SPDX: 40392
Files with errors: 0
I think the majority of the "easy" fixups are now done, it's now the
start of the longer-tail of crazy variants to wade through"
* tag 'spdx-5.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (159 commits)
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 450
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 449
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 448
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 446
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 445
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 444
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 443
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 442
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 440
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 438
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 437
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 436
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 435
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 434
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 433
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 432
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 431
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 430
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 429
...
|
|
If we only set the max_segment_size on the queue an IOMMU merge might
create bigger segments again, so limit the IOMMU merges as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
This driver does never uses dma_map_sg, so the setting is rather
pointless.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Based on 1 normalized pattern(s):
this driver is released to the public under the terms of the gnu
general public license version 2 see the file copying for details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000437.884937603@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
Bruce Ashfield
Chuhong Yuan
Dan Carpenter
Navid Emamdoost
Sun Ke
Josef Bacik
Xiubo Li
Chenwandun
Martijn Coenen
Mike Christie
Jens Axboe
Alessio Balsini
Jann Horn
Wenwen Wang
He Zhe
Arnd Bergmann
Mikulas Patocka
Munehisa Kamata
Jan Kara
Denis Efremov
Bob Liu
Thomas Gleixner
Geert Uytterhoeven
Chaitanya Kulkarni
Linus Torvalds
Christoph Hellwig