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d994ac7c78
commit b843adde8d upstream.
System crash, where driver is accessing scsi layer's
memory (scsi_cmnd->device->host) to search for a well known internal
pointer (vha). The scsi_cmnd was released back to upper layer which
could be freed, but the driver is still accessing it.
7 [ffffa8e8d2c3f8d0] page_fault at ffffffff86c010fe
[exception RIP: __qla2x00_eh_wait_for_pending_commands+240]
RIP: ffffffffc0642350 RSP: ffffa8e8d2c3f988 RFLAGS: 00010286
RAX: 0000000000000165 RBX: 0000000000000002 RCX: 00000000000036d8
RDX: 0000000000000000 RSI: ffff9c5c56535188 RDI: 0000000000000286
RBP: ffff9c5bf7aa4a58 R8: ffff9c589aecdb70 R9: 00000000000003d1
R10: 0000000000000001 R11: 0000000000380000 R12: ffff9c5c5392bc78
R13: ffff9c57044ff5c0 R14: ffff9c56b5a3aa00 R15: 00000000000006db
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
8 [ffffa8e8d2c3f9c8] qla2x00_eh_wait_for_pending_commands at ffffffffc0646dd5 [qla2xxx]
9 [ffffa8e8d2c3fa00] __qla2x00_async_tm_cmd at ffffffffc0658094 [qla2xxx]
Remove access of freed memory. Currently the driver was checking to see if
scsi_done was called by seeing if the sp->type has changed. Instead,
check to see if the command has left the oustanding_cmds[] array as
sign of scsi_done was called.
Cc: stable@vger.kernel.org
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230428075339.32551-6-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.