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a2093dd35f
linux/drivers/infiniband/core
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Artemy Kovalyov a2093dd35f RDMA/umem: Add missing initialization of owning_mm 
When allocating a umem leaf for implicit ODP MR during page fault the
field owning_mm was not set.

Initialize and take a reference on this field to avoid kernel panic when
trying to access this field.

 BUG: unable to handle kernel NULL pointer dereference at 0000000000000058
 PGD 800000022dfed067 P4D 800000022dfed067 PUD 22dfcf067 PMD 0
 Oops: 0000 [#1] SMP PTI
 CPU: 0 PID: 634 Comm: kworker/u33:0 Not tainted 4.20.0-rc6+ #89
 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
 Workqueue: mlx5_ib_page_fault mlx5_ib_eqe_pf_action [mlx5_ib]
 RIP: 0010:ib_umem_odp_map_dma_pages+0xf3/0x710 [ib_core]
 Code: 45 c0 48 21 f3 48 89 75 b0 31 f6 4a 8d 04 33 48 89 45 a8 49 8b 44 24 60 48 8b 78 10 e8 66 16 a8 c5 49 8b 54 24 08 48 89 45 98 <8b> 42 58 85 c0 0f 84 8e 05 00 00 8d 48 01 48 8d 72 58 f0 0f b1 4a
 RSP: 0000:ffffb610813a7c20 EFLAGS: 00010202
 RAX: ffff95ace6e8ac80 RBX: 0000000000000000 RCX: 000000000000000c
 RDX: 0000000000000000 RSI: 0000000000000850 RDI: ffff95aceaadae80
 RBP: ffffb610813a7ce0 R08: 0000000000000000 R09: 0000000000080c77
 R10: ffff95acfffdbd00 R11: 0000000000000000 R12: ffff95aceaa20a00
 R13: 0000000000001000 R14: 0000000000001000 R15: 000000000000000c
 FS:  0000000000000000(0000) GS:ffff95acf7800000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000000000000058 CR3: 000000022c834001 CR4: 00000000001606f0
 Call Trace:
  pagefault_single_data_segment+0x1df/0xc60 [mlx5_ib]
  mlx5_ib_eqe_pf_action+0x7bc/0xa70 [mlx5_ib]
  ? __switch_to+0xe1/0x470
  process_one_work+0x174/0x390
  worker_thread+0x4f/0x3e0
  kthread+0x102/0x140
  ? drain_workqueue+0x130/0x130
  ? kthread_stop+0x110/0x110
  ret_from_fork+0x1f/0x30

Fixes: f27a0d50a4 ("RDMA/umem: Use umem->owning_mm inside ODP")
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-01-25 09:55:48 -07:00
..
addr.c RDMA/core: Annotate timeout as unsigned long 2018-10-16 13:34:01 -04:00
agent.c RDMA: Mark if destroy address handle is in a sleepable context 2018-12-19 16:28:03 -07:00
agent.h
cache.c RDMA/core: Delete RoCE GID in hw when corresponding IP is deleted 2018-12-18 14:16:44 -07:00
cgroup.c
cm_msgs.h IB/cm: Remove unused and erroneous msg sequence encoding 2018-07-09 11:39:28 -06:00
cm.c RDMA: Mark if destroy address handle is in a sleepable context 2018-12-19 16:28:03 -07:00
cma_configfs.c RDMA/cma: Move cma module specific functions to cma_priv.h 2018-11-22 11:57:33 -07:00
cma_priv.h RDMA/cma: Move cma module specific functions to cma_priv.h 2018-11-22 11:57:33 -07:00
cma.c RDMA/cma: Add cm_id restrack resource based on kernel or user cm_id type 2019-01-08 17:12:33 -07:00
core_priv.h RDMA/device: Expose ib_device_try_get(() 2019-01-21 14:33:08 -07:00
cq.c RDMA/restrack: Resource-tracker should not use uobject pointers 2018-12-18 15:38:26 -07:00
device.c RDMA/device: Expose ib_device_try_get(() 2019-01-21 14:33:08 -07:00
fmr_pool.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
iwcm.c RDMA/iwcm: Don't copy past the end of dev_name() string 2018-12-20 20:45:56 -07:00
iwcm.h
iwpm_msg.c RDMA/iwpm: Properly mark end of NL messages 2017-09-29 11:32:42 -04:00
iwpm_util.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
iwpm_util.h
mad_priv.h RDMA/core: Annotate timeout as unsigned long 2018-10-16 13:34:01 -04:00
mad_rmpp.c RDMA: Mark if destroy address handle is in a sleepable context 2018-12-19 16:28:03 -07:00
mad_rmpp.h
mad.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
Makefile RDMA/uverbs: Implement an ioctl that can call write and write_ex handlers 2018-12-18 14:12:48 -05:00
mr_pool.c
multicast.c IB: Make ib_init_ah_from_mcmember set sgid_attr 2018-06-25 14:19:56 -06:00
netlink.c RDMA/netlink: Simplify netlink listener existence check 2018-10-03 16:06:07 -06:00
nldev.c RDMA/nldev: Don't expose unsafe global rkey to regular user 2019-01-07 13:35:57 -07:00
opa_smi.h RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
packer.c
rdma_core.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
rdma_core.h RDMA/uverbs: Mark ioctl responses with UVERBS_ATTR_F_VALID_OUTPUT 2019-01-14 14:02:22 -07:00
restrack.c RDMA/restrack: Resource-tracker should not use uobject pointers 2018-12-18 15:38:26 -07:00
roce_gid_mgmt.c IB/core: Fix oops in netdev_next_upper_dev_rcu() 2018-12-12 12:14:49 -05:00
rw.c IB/core: Ensure we map P2P memory correctly in rdma_rw_ctx_[init|destroy]() 2018-10-17 12:18:20 -05:00
sa_query.c RDMA: Mark if destroy address handle is in a sleepable context 2018-12-19 16:28:03 -07:00
sa.h RDMA/core: Annotate timeout as unsigned long 2018-10-16 13:34:01 -04:00
security.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
smi.c
smi.h RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
sysfs.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
ucm.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
ucma.c RDMA/ucma: Fix Spectre v1 vulnerability 2018-10-16 12:47:40 -04:00
ud_header.c
umem_odp.c RDMA/umem: Add missing initialization of owning_mm 2019-01-25 09:55:48 -07:00
umem.c RDMA/core: Acquire and release mmap_sem on page range 2018-09-27 12:40:20 -06:00
user_mad.c IB/umad: Start using dev_groups of class 2018-12-21 11:39:41 -07:00
uverbs_cmd.c RDMA/uverbs: Mark ioctl responses with UVERBS_ATTR_F_VALID_OUTPUT 2019-01-14 14:02:22 -07:00
uverbs_ioctl.c RDMA/uverbs: Mark ioctl responses with UVERBS_ATTR_F_VALID_OUTPUT 2019-01-14 14:02:22 -07:00
uverbs_main.c RDMA/uverbs: Mark ioctl responses with UVERBS_ATTR_F_VALID_OUTPUT 2019-01-14 14:02:22 -07:00
uverbs_marshall.c IB/cm: Replace members of sa_path_rec with 'struct sgid_attr *' 2018-06-25 14:19:57 -06:00
uverbs_std_types_counters.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
uverbs_std_types_cq.c RDMA/restrack: Resource-tracker should not use uobject pointers 2018-12-18 15:38:26 -07:00
uverbs_std_types_device.c IB/core: Move query port to ioctl 2018-12-20 15:18:24 -07:00
uverbs_std_types_dm.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
uverbs_std_types_flow_action.c RDMA: Start use ib_device_ops 2018-12-12 07:40:16 -07:00
uverbs_std_types_mr.c IB/uverbs: Signedness bug in UVERBS_HANDLER() 2018-12-22 16:07:13 -07:00
uverbs_std_types.c RDMA: Mark if destroy address handle is in a sleepable context 2018-12-19 16:28:03 -07:00
uverbs_uapi.c RDMA/uverbs: Implement an ioctl that can call write and write_ex handlers 2018-12-18 14:12:48 -05:00
uverbs.h IB/core: Move query port to ioctl 2018-12-20 15:18:24 -07:00
verbs.c RDMA: Mark if destroy address handle is in a sleepable context 2018-12-19 16:28:03 -07:00