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2017-02-14uapi: sed-opal fix IOW for activate lsp to use correct structScott Bauer1-1/+1
The IOC_OPAL_ACTIVATE_LSP took the wrong strcure which would give us the wrong size when using _IOC_SIZE, switch it to the right structure. Fixes: 058f8a2 ("Include: Uapi: Add user ABI for Sed/Opal") Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-14cdrom: Make device operations read-onlyKees Cook7-45/+37
Since function tables are a common target for attackers, it's best to keep them in read-only memory. As such, this makes the CDROM device ops tables const. This drops additionally n_minors, since it isn't used meaningfully, and sets the only user of cdrom_dummy_generic_packet explicitly so the variables can all be const. Inspired by similar changes in grsecurity/PaX. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-14elevator: fix loading wrong elevator type for blk-mq devicesJens Axboe1-4/+5
The old elevator= boot parameter blindly attempts to load the same scheduler for mq and !mq devices, leading to a crash if we specify the wrong one. Ensure that we only apply this boot parameter to old !mq devices. Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-13cciss: switch to pci_irq_alloc_vectorsChristoph Hellwig2-43/+17
Simple cleanup to use the new APIs. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Don Brace <don.brace@microsemi.com> Tested-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-13block/loop: fix race between I/O and set_statusMing Lei1-5/+12
Inside set_status, transfer need to setup again, so we have to drain IO before the transition, otherwise oops may be triggered like the following: divide error: 0000 [#1] SMP KASAN CPU: 0 PID: 2935 Comm: loop7 Not tainted 4.10.0-rc7+ #213 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff88006ba1e840 task.stack: ffff880067338000 RIP: 0010:transfer_xor+0x1d1/0x440 drivers/block/loop.c:110 RSP: 0018:ffff88006733f108 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8800688d7000 RCX: 0000000000000059 RDX: 0000000000000000 RSI: 1ffff1000d743f43 RDI: ffff880068891c08 RBP: ffff88006733f160 R08: ffff8800688d7001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800688d7000 R13: ffff880067b7d000 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88006d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006c17e0 CR3: 0000000066e3b000 CR4: 00000000001406f0 Call Trace: lo_do_transfer drivers/block/loop.c:251 [inline] lo_read_transfer drivers/block/loop.c:392 [inline] do_req_filebacked drivers/block/loop.c:541 [inline] loop_handle_cmd drivers/block/loop.c:1677 [inline] loop_queue_work+0xda0/0x49b0 drivers/block/loop.c:1689 kthread_worker_fn+0x4c3/0xa30 kernel/kthread.c:630 kthread+0x326/0x3f0 kernel/kthread.c:227 ret_from_fork+0x31/0x40 arch/x86/entry/entry_64.S:430 Code: 03 83 e2 07 41 29 df 42 0f b6 04 30 4d 8d 44 24 01 38 d0 7f 08 84 c0 0f 85 62 02 00 00 44 89 f8 41 0f b6 48 ff 25 ff 01 00 00 99 <f7> 7d c8 48 63 d2 48 03 55 d0 48 89 d0 48 89 d7 48 c1 e8 03 83 RIP: transfer_xor+0x1d1/0x440 drivers/block/loop.c:110 RSP: ffff88006733f108 ---[ end trace 0166f7bd3b0c0933 ]--- Reported-by: Dmitry Vyukov <dvyukov@google.com> Cc: stable@vger.kernel.org Signed-off-by: Ming Lei <tom.leiming@gmail.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-07gdrom: Add missing error codeChristophe JAILLET1-2/+6
In case of error, 'err' is known to be 0 here, because of the previous test. Set it to a -ENOMEM instead. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-06Fix SED-OPAL UAPI structs to prevent 32/64 bit size differences.Scott Bauer1-17/+18
This patch is a quick fixup of the user structures that will prevent the structures from being different sizes on 32 and 64 bit archs. Taking this fix will allow us to *NOT* have to do compat ioctls for the sed code. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Fixes: 19641f2d7674 ("Include: Uapi: Add user ABI for Sed/Opal") Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-06nvme: Add Support for Opal: Unlock from S3 & Opal Allocation/IoctlsScott Bauer3-0/+46
This patch implements the necessary logic to unlock an Opal enabled device coming back from an S3. The patch also implements the SED/Opal allocation necessary to support the opal ioctls. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-06block: Add Sed-opal libraryScott Bauer6-0/+3074
This patch implements the necessary logic to bring an Opal enabled drive out of a factory-enabled into a working Opal state. This patch set also enables logic to save a password to be replayed during a resume from suspend. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Rafael Antognolli <Rafael.Antognolli@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>