Apparently the Linux kernel v4.20 iov_iter_kvec() function has been
backported to RHEL / CentOS 8.2. This patch fixes the following kernel
warning:
WARNING: CPU: 26 PID: 21141 at lib/iov_iter.c:1083 iov_iter_kvec+0x25/0x30
Call Trace:
fileio_exec_async+0x216/0x3a0 [scst_vdisk]
fileio_exec_write+0x3b9/0x450 [scst_vdisk]
vdev_do_job+0x34/0xc0 [scst_vdisk]
scst_do_real_exec+0x54/0x100 [scst]
scst_exec_check_blocking+0xbb/0x210 [scst]
scst_process_active_cmd+0x64d/0x1550 [scst]
scst_cmd_thread+0x170/0x5a0 [scst]
kthread+0x112/0x130
ret_from_fork+0x35/0x40
See also https://github.com/bvanassche/scst/issues/26.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9026 d57e44dd-8a1f-0410-8b47-8ef2f437770f
In NPIV environment, a NPIV host may use a queue pair created by base host
or other NPIVs, so the check for a queue pair created by this NPIV is not
correct, and can cause an abort to fail, which in turn means the NVME
command not returned. This leads to hang in nvme_fc layer in
nvme_fc_delete_association() which waits for all I/Os to be returned, which
is seen as hang in the application.
Link: https://lore.kernel.org/r/20200331104015.24868-3-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ commit 45a76264c26fd8cfd0c9746196892d9b7e2657ee upstream ]
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9020 d57e44dd-8a1f-0410-8b47-8ef2f437770f
qlt_free_session_done() tries to post async PRLO / LOGO, and waits for the
completion of these async commands. If UNLOADING is set, this is doomed to
timeout, because the async logout command will never complete.
The only way to avoid waiting pointlessly is to fail posting these commands
in the first place if the driver is in UNLOADING state. In general,
posting any command should be avoided when the driver is UNLOADING.
With this patch, "rmmod qla2xxx" completes without noticeable delay.
Link: https://lore.kernel.org/r/20200421204621.19228-3-mwilck@suse.com
Fixes: 45235022da99 ("scsi: qla2xxx: Fix driver unload by shutting down chip")
Acked-by: Arun Easi <aeasi@marvell.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ commit 5a263892d7d0b4fe351363f8d1a14c6a75955475 upstream ]
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9019 d57e44dd-8a1f-0410-8b47-8ef2f437770f
The purpose of the UNLOADING flag is to avoid port login procedures to
continue when a controller is in the process of shutting down. It makes
sense to set this flag before starting session teardown.
Furthermore, use atomic test_and_set_bit() to avoid the shutdown being run
multiple times in parallel. In qla2x00_disable_board_on_pci_error(), the
test for UNLOADING is postponed until after the check for an already
disabled PCI board.
Link: https://lore.kernel.org/r/20200421204621.19228-2-mwilck@suse.com
Fixes: 45235022da99 ("scsi: qla2xxx: Fix driver unload by shutting down chip")
Reviewed-by: Arun Easi <aeasi@marvell.com>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ commit 856e152a3c08bf7987cbd41900741d83d9cddc8e upstream ]
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9018 d57e44dd-8a1f-0410-8b47-8ef2f437770f
Fix the following compiler warnings:
drivers/scsi/qla2xxx/qla_dbg.c:2542:7: warning: The scope of the variable 'pbuf' can be reduced. [variableScope]
drivers/scsi/qla2xxx/qla_init.c:3615:6: warning: Variable 'rc' is assigned a value that is never used. [unreadVariable]
drivers/scsi/qla2xxx/qla_isr.c:81:11-29: WARNING: dma_alloc_coherent use in rsp_els already zeroes out memory, so memset is not needed
drivers/scsi/qla2xxx/qla_mbx.c:4889:15-33: WARNING: dma_alloc_coherent use in els_cmd_map already zeroes out memory, so memset is not needed
[mkp: added newline after variable declaration]
Link: https://lore.kernel.org/r/20200403084018.30766-2-njavali@marvell.com
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[ commit bb46737ec09e9a072424bf46def2977c5b6b925d upstream ]
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9017 d57e44dd-8a1f-0410-8b47-8ef2f437770f
Simplify the scst_local driver by always using thread context for passing
commands to SCST.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9005 d57e44dd-8a1f-0410-8b47-8ef2f437770f
$(KBUILD_EXTRA_SYMBOLS) is not only used at compile time but also at link
time. Move the $(KBUILD_EXTRA_SYMBOLS) definitions such that it is
available both at compile time and at link time.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@9000 d57e44dd-8a1f-0410-8b47-8ef2f437770f
While $(src) is always defined, $(KBUILD_EXTMOD) is only defined when
building code as an external module.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8999 d57e44dd-8a1f-0410-8b47-8ef2f437770f
User space code must not use PAGE_SIZE but must use sysconf(_SC_PAGESIZE)
instead to obtain the page size.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8997 d57e44dd-8a1f-0410-8b47-8ef2f437770f
