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A mirror of the official Linux kernel repository just in case
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7d30c81b80
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Minwoo Im 7d30c81b80 nvme: fix NULL deref for fabrics options 
git://git.infradead.org/nvme.git nvme-5.3 branch now causes the
following NULL deref oops.  Check the ctrl->opts first before the deref.

[   16.337581] BUG: kernel NULL pointer dereference, address: 0000000000000056
[   16.338551] #PF: supervisor read access in kernel mode
[   16.338551] #PF: error_code(0x0000) - not-present page
[   16.338551] PGD 0 P4D 0
[   16.338551] Oops: 0000 [#1] SMP PTI
[   16.338551] CPU: 2 PID: 1035 Comm: kworker/u16:5 Not tainted 5.2.0-rc6+ #1
[   16.338551] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.2-0-gf9626ccb91-prebuilt.qemu-project.org 04/01/2014
[   16.338551] Workqueue: nvme-wq nvme_scan_work [nvme_core]
[   16.338551] RIP: 0010:nvme_validate_ns+0xc9/0x7e0 [nvme_core]
[   16.338551] Code: c0 49 89 c5 0f 84 00 07 00 00 48 8b 7b 58 e8 be 48 39 c1 48 3d 00 f0 ff ff 49 89 45 18 0f 87 a4 06 00 00 48 8b 93 70 0a 00 00 <80> 7a 56 00 74 0c 48 8b 40 68 83 48 3c 08 49 8b 45 18 48 89 c6 bf
[   16.338551] RSP: 0018:ffffc900024c7d10 EFLAGS: 00010283
[   16.338551] RAX: ffff888135a30720 RBX: ffff88813a4fd1f8 RCX: 0000000000000007
[   16.338551] RDX: 0000000000000000 RSI: ffffffff8256dd38 RDI: ffff888135a30720
[   16.338551] RBP: 0000000000000001 R08: 0000000000000007 R09: ffff88813aa6a840
[   16.338551] R10: 0000000000000001 R11: 000000000002d060 R12: ffff88813a4fd1f8
[   16.338551] R13: ffff88813a77f800 R14: ffff88813aa35180 R15: 0000000000000001
[   16.338551] FS:  0000000000000000(0000) GS:ffff88813ba80000(0000) knlGS:0000000000000000
[   16.338551] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.338551] CR2: 0000000000000056 CR3: 000000000240a002 CR4: 0000000000360ee0
[   16.338551] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   16.338551] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   16.338551] Call Trace:
[   16.338551]  nvme_scan_work+0x2c0/0x340 [nvme_core]
[   16.338551]  ? __switch_to_asm+0x40/0x70
[   16.338551]  ? _raw_spin_unlock_irqrestore+0x18/0x30
[   16.338551]  ? try_to_wake_up+0x408/0x450
[   16.338551]  process_one_work+0x20b/0x3e0
[   16.338551]  worker_thread+0x1f9/0x3d0
[   16.338551]  ? cancel_delayed_work+0xa0/0xa0
[   16.338551]  kthread+0x117/0x120
[   16.338551]  ? kthread_stop+0xf0/0xf0
[   16.338551]  ret_from_fork+0x3a/0x50
[   16.338551] Modules linked in: nvme nvme_core
[   16.338551] CR2: 0000000000000056
[   16.338551] ---[ end trace b9bf761a93e62d84 ]---
[   16.338551] RIP: 0010:nvme_validate_ns+0xc9/0x7e0 [nvme_core]
[   16.338551] Code: c0 49 89 c5 0f 84 00 07 00 00 48 8b 7b 58 e8 be 48 39 c1 48 3d 00 f0 ff ff 49 89 45 18 0f 87 a4 06 00 00 48 8b 93 70 0a 00 00 <80> 7a 56 00 74 0c 48 8b 40 68 83 48 3c 08 49 8b 45 18 48 89 c6 bf
[   16.338551] RSP: 0018:ffffc900024c7d10 EFLAGS: 00010283
[   16.338551] RAX: ffff888135a30720 RBX: ffff88813a4fd1f8 RCX: 0000000000000007
[   16.338551] RDX: 0000000000000000 RSI: ffffffff8256dd38 RDI: ffff888135a30720
[   16.338551] RBP: 0000000000000001 R08: 0000000000000007 R09: ffff88813aa6a840
[   16.338551] R10: 0000000000000001 R11: 000000000002d060 R12: ffff88813a4fd1f8
[   16.338551] R13: ffff88813a77f800 R14: ffff88813aa35180 R15: 0000000000000001
[   16.338551] FS:  0000000000000000(0000) GS:ffff88813ba80000(0000) knlGS:0000000000000000
[   16.338551] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.338551] CR2: 0000000000000056 CR3: 000000000240a002 CR4: 0000000000360ee0
[   16.338551] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   16.338551] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Fixes: 958f2a0f81 ("nvme-tcp: set the STABLE_WRITES flag when data digests are enabled")
Cc: Christoph Hellwig <hch@lst.de>
Cc: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-07-11 16:02:26 -06:00
arch Power management updates for 5.3-rc1 2019-07-09 10:05:22 -07:00
block block: Disable write plugging for zoned block devices 2019-07-10 14:18:01 -06:00
certs Keyrings ACL 2019-07-08 19:56:57 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
Documentation block: Remove unused definitions 2019-07-10 14:18:01 -06:00
drivers nvme: fix NULL deref for fabrics options 2019-07-11 16:02:26 -06:00
fs blkcg, writeback: Add wbc->no_cgroup_owner 2019-07-10 09:00:57 -06:00
include Merge branch 'nvme-5.3' of git://git.infradead.org/nvme into for-linus 2019-07-11 08:12:31 -06:00
init for-5.3/block-20190708 2019-07-09 10:45:06 -07:00
ipc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
kernel for-5.3/block-20190708 2019-07-09 10:45:06 -07:00
lib for-5.3/block-20190708 2019-07-09 10:45:06 -07:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
mm Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
net LED updates for 5.3-rc1 2019-07-09 08:59:39 -07:00
samples media updates for v5.3-rc1 2019-07-09 09:47:22 -07:00
scripts Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-07-08 16:12:03 -07:00
security Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
sound ALSA: firewire-lib: code refactoring for local variables 2019-07-08 14:50:42 +02:00
tools ACPI updates for 5.3-rc1 2019-07-09 10:21:39 -07:00
usr user/Makefile: Fix typo and capitalization in comment section 2018-12-11 00:18:03 +09:00
virt SPDX update for 5.2-rc6 2019-06-21 09:58:42 -07:00
.clang-format Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-04-17 11:26:25 -07:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes
.gitignore .gitignore: exclude .get_maintainer.ignore and .gitattributes 2019-05-18 11:49:54 +09:00
.mailmap MAINTAINERS: Update my email address 2019-06-18 14:37:27 +01:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS MAINTAINERS: Farewell Martin Schwidefsky 2019-05-31 10:14:11 +02:00
Kbuild Kbuild updates for v5.1 2019-03-10 17:48:21 -07:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS ACPI updates for 5.3-rc1 2019-07-09 10:21:39 -07:00
Makefile Linux 5.2 2019-07-07 15:41:56 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.