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Filename Latest commit message Latest commit date
Alok Prasad 28c70d5036 RDMA/qedr: Fix NULL deref for query_qp on the GSI QP 
commit 4f960393a0ee9a39469ceb7c8077ae8db665cc12 upstream.

This patch fixes a crash caused by querying the QP via netlink, and
corrects the state of GSI qp. GSI qp's have a NULL qed_qp.

The call trace is generated by:
 $ rdma res show

 BUG: kernel NULL pointer dereference, address: 0000000000000034
 Hardware name: Dell Inc. PowerEdge R720/0M1GCR, BIOS 1.2.6 05/10/2012
 RIP: 0010:qed_rdma_query_qp+0x33/0x1a0 [qed]
 RSP: 0018:ffffba560a08f580 EFLAGS: 00010206
 RAX: 0000000200000000 RBX: ffffba560a08f5b8 RCX: 0000000000000000
 RDX: ffffba560a08f5b8 RSI: 0000000000000000 RDI: ffff9807ee458090
 RBP: ffffba560a08f5a0 R08: 0000000000000000 R09: ffff9807890e7048
 R10: ffffba560a08f658 R11: 0000000000000000 R12: 0000000000000000
 R13: ffff9807ee458090 R14: ffff9807f0afb000 R15: ffffba560a08f7ec
 FS:  00007fbbf8bfe740(0000) GS:ffff980aafa00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000034 CR3: 00000001720ba001 CR4: 00000000000606f0
 Call Trace:
  qedr_query_qp+0x82/0x360 [qedr]
  ib_query_qp+0x34/0x40 [ib_core]
  ? ib_query_qp+0x34/0x40 [ib_core]
  fill_res_qp_entry_query.isra.26+0x47/0x1d0 [ib_core]
  ? __nla_put+0x20/0x30
  ? nla_put+0x33/0x40
  fill_res_qp_entry+0xe3/0x120 [ib_core]
  res_get_common_dumpit+0x3f8/0x5d0 [ib_core]
  ? fill_res_cm_id_entry+0x1f0/0x1f0 [ib_core]
  nldev_res_get_qp_dumpit+0x1a/0x20 [ib_core]
  netlink_dump+0x156/0x2f0
  __netlink_dump_start+0x1ab/0x260
  rdma_nl_rcv+0x1de/0x330 [ib_core]
  ? nldev_res_get_cm_id_dumpit+0x20/0x20 [ib_core]
  netlink_unicast+0x1b8/0x270
  netlink_sendmsg+0x33e/0x470
  sock_sendmsg+0x63/0x70
  __sys_sendto+0x13f/0x180
  ? setup_sgl.isra.12+0x70/0xc0
  __x64_sys_sendto+0x28/0x30
  do_syscall_64+0x3a/0xb0
  entry_SYSCALL_64_after_hwframe+0x44/0xae

Cc: stable@vger.kernel.org
Fixes: cecbcddf64 ("qedr: Add support for QP verbs")
Link: https://lore.kernel.org/r/20211027184329.18454-1-palok@marvell.com
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-17 09:48:24 +01:00
arch ia64: kprobes: Fix to pass correct trampoline address to the handler 2021-11-17 09:48:22 +01:00
block Revert "block, bfq: honor already-setup queue merges" 2021-10-06 15:42:34 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-15 09:47:29 +02:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-14 16:53:13 +02:00
Documentation regulator: dt-bindings: samsung,s5m8767: correct s5m8767,pmic-buck-default-dvs-idx property 2021-11-17 09:48:22 +01:00
drivers RDMA/qedr: Fix NULL deref for query_qp on the GSI QP 2021-11-17 09:48:24 +01:00
fs btrfs: call btrfs_check_rw_degradable only if there is a missing device 2021-11-17 09:48:22 +01:00
include net: multicast: calculate csum of looped-back and forwarded packets 2021-11-17 09:48:21 +01:00
init kbuild: add CONFIG_LD_IS_LLD 2021-06-30 08:47:44 -04:00
ipc
kernel bpf: Prevent increasing bpf_jit_limit above max 2021-11-17 09:48:20 +01:00
lib Kconfig.debug: drop selecting non-existing HARDLOCKUP_DETECTOR_ARCH 2021-09-26 14:07:10 +02:00
LICENSES
mm mm, slub: fix potential memoryleak in kmem_cache_open() 2021-10-27 09:54:28 +02:00
net net/smc: Correct spelling mistake to TCPF_SYN_RECV 2021-11-17 09:48:22 +01:00
samples samples: bpf: Fix tracex7 error raised on the missing argument 2021-09-22 12:26:30 +02:00
scripts gcc-plugins/structleak: add makefile var for disabling structleak 2021-10-27 09:54:28 +02:00
security evm: mark evm_fixmode as __ro_after_init 2021-11-17 09:48:23 +01:00
sound ALSA: timer: Unconditionally unlink slave instances, too 2021-11-17 09:48:19 +01:00
tools perf script: Check session->header.env.arch before using it 2021-11-02 19:46:15 +01:00
usr
virt KVM: do not shrink halt_poll_ns below grow_start 2021-10-09 14:39:50 +02:00
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Makefile Linux 5.4.159 2021-11-12 14:43:05 +01:00
README

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.