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Filename Latest commit message Latest commit date
Bart Van Assche 063c3cfb26 scsi: Revert "qla2xxx: Make sure that aborted commands are freed" 
[ Upstream commit 39c0c8553bfb5a3d108aa47f1256076d507605e3 ]

Calling vha->hw->tgt.tgt_ops->free_cmd() from qlt_xmit_response() is wrong
since the command for which a response is sent must remain valid until the
SCSI target core calls .release_cmd(). It has been observed that the
following scenario triggers a kernel crash:

 - qlt_xmit_response() calls qlt_check_reserve_free_req()

 - qlt_check_reserve_free_req() returns -EAGAIN

 - qlt_xmit_response() calls vha->hw->tgt.tgt_ops->free_cmd(cmd)

 - transport_handle_queue_full() tries to retransmit the response

Fix this crash by reverting the patch that introduced it.

Link: https://lore.kernel.org/r/20210320232359.941-2-bvanassche@acm.org
Fixes: 0dcec41acb ("scsi: qla2xxx: Make sure that aborted commands are freed")
Cc: Quinn Tran <qutran@marvell.com>
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-30 14:35:29 +02:00
arch arm64: kdump: update ppos when reading elfcorehdr 2021-03-30 14:35:27 +02:00
block block: recalculate segment count for multi-segment discards correctly 2021-03-30 14:35:28 +02:00
certs
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Documentation
drivers scsi: Revert "qla2xxx: Make sure that aborted commands are freed" 2021-03-30 14:35:29 +02:00
fs squashfs: fix xattr id and id lookup sanity checks 2021-03-30 14:35:23 +02:00
include ACPI: scan: Use unique number for instance_no 2021-03-30 14:35:28 +02:00
init
ipc
kernel PM: EM: postpone creating the debugfs dir till fs_initcall 2021-03-30 14:35:28 +02:00
lib
LICENSES
mm
net Revert "netfilter: x_tables: Update remaining dereference to RCU" 2021-03-30 14:35:28 +02:00
samples
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security integrity: double check iint_cache was initialized 2021-03-30 14:35:24 +02:00
sound
tools perf auxtrace: Fix auxtrace queue conflict 2021-03-30 14:35:28 +02:00
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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.