ee413b2915
If we queue work in io_poll_wake(), it will leads to list double
add. So we should add the list when the callback func is the
io_sq_wq_submit_work.
The following oops was seen:
list_add double add: new=ffff9ca6a8f1b0e0, prev=ffff9ca62001cee8,
next=ffff9ca6a8f1b0e0.
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:31!
Call Trace:
<IRQ>
io_poll_wake+0xf3/0x230
__wake_up_common+0x91/0x170
__wake_up_common_lock+0x7a/0xc0
io_commit_cqring+0xea/0x280
? blkcg_iolatency_done_bio+0x2b/0x610
io_cqring_add_event+0x3e/0x60
io_complete_rw+0x58/0x80
dio_complete+0x106/0x250
blk_update_request+0xa0/0x3b0
blk_mq_end_request+0x1a/0x110
blk_mq_complete_request+0xd0/0xe0
nvme_irq+0x129/0x270 [nvme]
__handle_irq_event_percpu+0x7b/0x190
handle_irq_event_percpu+0x30/0x80
handle_irq_event+0x3c/0x60
handle_edge_irq+0x91/0x1e0
do_IRQ+0x4d/0xd0
common_interrupt+0xf/0xf
Fixes:
|
||
---|---|---|
Documentation | ||
LICENSES | ||
arch | ||
block | ||
certs | ||
crypto | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | ||
.cocciconfig | ||
.get_maintainer.ignore | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
COPYING | ||
CREDITS | ||
Kbuild | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
README |
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.