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d5632b11f0
The kernel panic was observed after switch side perturbation,
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff8132b5a0>] strcmp+0x20/0x40
PGD 0 Oops: 0000 [#1] SMP
CPU: 8 PID: 647 Comm: kworker/8:1 Tainted: G W OE ------------ 3.10.0-693.el7.x86_64 #1
Hardware name: HPE ProLiant DL380 Gen10/ProLiant DL380 Gen10, BIOS U30 06/20/2018
Workqueue: slowpath-13:00. qed_slowpath_task [qed]
task: ffff880429eb8fd0 ti: ffff880429190000 task.ti: ffff880429190000
RIP: 0010:[<ffffffff8132b5a0>] [<ffffffff8132b5a0>] strcmp+0x20/0x40
RSP: 0018:ffff880429193c68 EFLAGS: 00010202
RAX: 000000000000000a RBX: 0000000000000002 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88042bda7a41
RBP: ffff880429193c68 R08: 000000000000ffff R09: 000000000000ffff
R10: 0000000000000007 R11: ffff88042b3af338 R12: ffff880420b007a0
R13: ffff88081aa56af8 R14: 0000000000000001 R15: ffff88081aa50410
FS: 0000000000000000(0000) GS:ffff88042fe00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000019f2000 CR4: 00000000003407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
ffff880429193d20 ffffffffc02a0c90 ffffc90004b32000 ffff8803fd3ec600
ffff88042bda7800 ffff88042bda7a00 ffff88042bda7840 ffff88042bda7a40
0000000129193d10 2e3836312e323931 ff000a342e363232 ffffffffc01ad99d
Call Trace:
[<ffffffffc02a0c90>] qedi_get_protocol_tlv_data+0x270/0x470 [qedi]
[<ffffffffc01ad99d>] ? qed_mfw_process_tlv_req+0x24d/0xbf0 [qed]
[<ffffffffc01653ae>] qed_mfw_fill_tlv_data+0x5e/0xd0 [qed]
[<ffffffffc01ad9b9>] qed_mfw_process_tlv_req+0x269/0xbf0 [qed]
Fix kernel NULL pointer deref by checking for session is online before
getting iSCSI TLV data.
Signed-off-by: Manish Rangankar <manish.rangankar@cavium.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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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.