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6c41965d64
destroy_qp_common is called for flows where QP is already created by
HW. While it is called from IB/core, the ibqp.* fields will be fully
initialized, but it is not the case if this function is called during QP
creation.
Don't rely on ibqp fields as much as possible and initialize
send_cq/recv_cq as temporal solution till all drivers will be converted to
IB/core QP allocation scheme.
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 5372 at lib/refcount.c:28 refcount_warn_saturate+0xfe/0x1a0
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 5372 Comm: syz-executor.2 Not tainted 5.5.0-rc5 #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
Call Trace:
mlx5_core_put_rsc+0x70/0x80
destroy_resource_common+0x8e/0xb0
mlx5_core_destroy_qp+0xaf/0x1d0
mlx5_ib_destroy_qp+0xeb0/0x1460
ib_destroy_qp_user+0x2d5/0x7d0
create_qp+0xed3/0x2130
ib_uverbs_create_qp+0x13e/0x190
? ib_uverbs_ex_create_qp
ib_uverbs_write+0xaa5/0xdf0
__vfs_write+0x7c/0x100
ksys_write+0xc8/0x200
do_syscall_64+0x9c/0x390
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes:
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||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| 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 | ||
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.