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a70ed0f2e6
linux/drivers/infiniband/hw/hfi1
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Kaike Wan a70ed0f2e6 IB/hfi1: Acquire lock to release TID entries when user file is closed 
Each user context is allocated a certain number of RcvArray (TID)
entries and these entries are managed through TID groups. These groups
are put into one of three lists in each user context: tid_group_list,
tid_used_list, and tid_full_list, depending on the number of used TID
entries within each group. When TID packets are expected, one or more
TID groups will be allocated. After the packets are received, the TID
groups will be freed. Since multiple user threads may access the TID
groups simultaneously, a mutex exp_mutex is used to synchronize the
access. However, when the user file is closed, it tries to release
all TID groups without acquiring the mutex first, which risks a race
condition with another thread that may be releasing its TID groups,
leading to data corruption.

This patch addresses the issue by acquiring the mutex first before
releasing the TID groups when the file is closed.

Fixes: 3abb33ac65 ("staging/hfi1: Add TID cache receive init and free funcs")
Link: https://lore.kernel.org/r/20200210131026.87408.86853.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-02-11 11:41:31 -04:00
..
affinity.c RDMA/hfi1: Fix memory leak in _dev_comp_vect_mappings_create 2020-02-11 11:35:45 -04:00
affinity.h IB/{hfi1, rdmavt, qib}: Implement CQ completion vector support 2018-05-09 15:53:30 -04:00
aspm.c IB/hfi1: Reduce excessive aspm inlines 2019-06-28 22:34:26 -03:00
aspm.h IB/hfi1: Reduce excessive aspm inlines 2019-06-28 22:34:26 -03:00
chip_registers.h IB/hfi1: Add RcvShortLengthErrCnt to hfi1stats 2020-01-10 10:57:17 -04:00
chip.c IB/hfi1: Add RcvShortLengthErrCnt to hfi1stats 2020-01-10 10:57:17 -04:00
chip.h IB/hfi1: Add RcvShortLengthErrCnt to hfi1stats 2020-01-10 10:57:17 -04:00
common.h IB/hfi1: Add accessor API routines to access context members 2020-01-03 16:44:49 -04:00
debugfs.c IB/hfi1: List all receive contexts from debugfs 2020-01-03 16:44:50 -04:00
debugfs.h infiniband: hfi1: drop crazy DEBUGFS_SEQ_FILE_CREATE() macro 2019-01-24 09:22:29 -07:00
device.c
device.h
driver.c IB/hfi1: Add software counter for ctxt0 seq drop 2020-01-10 10:57:17 -04:00
efivar.c
efivar.h
eprom.c IB/hfi1: Check eeprom config partition validity 2017-09-27 11:10:36 -04:00
eprom.h
exp_rcv.c IB/hfi1: Remove WARN_ON when freeing expected receive groups 2019-04-03 15:27:30 -03:00
exp_rcv.h IB/hfi1: Cleanup of exp_rcv 2018-05-24 09:39:25 -06:00
fault.c infiniband: hfi1: fix memory leaks 2019-08-20 13:44:45 -04:00
fault.h IB/hfi1: Rework fault injection machinery 2018-05-09 15:53:30 -04:00
file_ops.c IB/hfi1: Add accessor API routines to access context members 2020-01-03 16:44:49 -04:00
firmware.c IB/hfi1: Fix infinite loop in 8051 command error path 2018-01-05 13:34:55 -05:00
hfi.h IB/hfi1: Add software counter for ctxt0 seq drop 2020-01-10 10:57:17 -04:00
init.c IB/hfi1: IB/hfi1: Add an API to handle special case drop 2020-01-10 10:57:16 -04:00
intr.c IB/hfi1: Allow MgmtAllowed on B2B setups 2017-11-13 15:53:56 -05:00
iowait.c IB/hfi1: Don't cancel unused work item 2020-01-03 16:41:51 -04:00
iowait.h IB/hfi1: Prioritize the sending of ACK packets 2019-02-05 18:07:44 -05:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mad.c RDMA: Change MAD processing function to remove extra casting and parameter 2019-11-12 20:20:15 -04:00
mad.h IB/hfi1: Convert PortXmitWait/PortVLXmitWait counters to flit times 2018-02-01 15:43:30 -07:00
Makefile IB/hfi1: Reduce excessive aspm inlines 2019-06-28 22:34:26 -03:00
mmu_rb.c mm/mmu_notifier: use structure for invalidate_range_start/end callback 2018-12-28 12:11:50 -08:00
mmu_rb.h
msix.c IB/hfi1: Fix logical condition in msix_request_irq 2020-01-25 15:33:53 -04:00
msix.h IB/hfi1: Decouple IRQ name from type 2020-01-10 10:57:17 -04:00
opa_compat.h
opfn.c IB/hfi1: Add TID RDMA retry timer 2019-02-05 18:07:43 -05:00
opfn.h IB/hfi1: Make opfn.h self sufficient 2019-04-24 11:31:49 -03:00
pcie.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
pio_copy.c
pio.c Linux 5.2-rc6 2019-06-28 21:18:23 -03:00
pio.h IB/hfi1: Reduce lock contention on iowait_lock for sdma and pio 2018-12-06 20:15:36 -07:00
platform.c IB/hfi1: remove redundant assignment to variable ret 2019-11-25 10:31:47 -04:00
platform.h
qp.c IB/{rdmavt, hfi1, qib}: Add helpers to hide SWQE WR details 2019-06-28 22:34:26 -03:00
qp.h IB/hfi1: Add the dual leg code 2019-02-05 18:07:44 -05:00
qsfp.c IB/{hfi1, rdmavt}: Fix memory leak in hfi1_alloc_devdata() upon failure 2018-05-03 15:24:48 -04:00
qsfp.h
rc.c IB/hfi1: use true,false for bool variable 2020-01-03 19:13:59 -04:00
rc.h IB/hfi1: Delay the release of destination mr for TID RDMA WRITE DATA 2019-04-03 15:27:30 -03:00
ruc.c IB/{rdmavt, hfi1): Miscellaneous comment fixes 2019-04-24 11:31:48 -03:00
sdma_txreq.h IB/hfi1: Prioritize the sending of ACK packets 2019-02-05 18:07:44 -05:00
sdma.c treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
sdma.h IB/hfi1: Reduce lock contention on iowait_lock for sdma and pio 2018-12-06 20:15:36 -07:00
sysfs.c RDMA: Introduce and use rdma_device_to_ibdev() 2019-01-14 13:12:03 -07:00
tid_rdma.c IB/hfi1: Adjust flow PSN with the correct resync_psn 2020-01-03 16:48:01 -04:00
tid_rdma.h IB/hfi1: Calculate flow weight based on QP MTU for TID RDMA 2019-11-06 13:15:36 -04:00
trace_ctxts.h IB/hfi1: Add accessor API routines to access context members 2020-01-03 16:44:49 -04:00
trace_dbg.h IB/hfi1: Fix two format strings 2019-03-28 11:03:49 -03:00
trace_ibhdrs.h IB/hfi1: Add missing INVALIDATE opcodes for trace 2019-06-28 22:34:26 -03:00
trace_iowait.h IB/hfi1: Add static trace for iowait 2018-09-30 19:21:12 -06:00
trace_misc.h
trace_mmu.h
trace_rc.h IB/hfi1: Add static trace for TID RDMA READ protocol 2019-02-05 17:53:56 -05:00
trace_rx.h IB/hfi1: Add fast and slow handlers for receive context 2020-01-10 10:57:16 -04:00
trace_tid.h ftrace: Rework event_create_dir() 2019-11-27 07:44:25 +01:00
trace_tx.h ftrace: Rework event_create_dir() 2019-11-27 07:44:25 +01:00
trace.c IB/hfi1: Add static trace for TID RDMA WRITE protocol 2019-02-05 18:07:44 -05:00
trace.h IB/hfi1: Add static trace for OPFN 2019-01-31 11:37:40 -05:00
uc.c IB/{hfi1, qib, rdmavt}: Put qp in error state when cq is full 2019-06-28 22:34:26 -03:00
ud.c IB/{rdmavt, hfi1, qib}: Add helpers to hide SWQE WR details 2019-06-28 22:34:26 -03:00
user_exp_rcv.c IB/hfi1: Acquire lock to release TID entries when user file is closed 2020-02-11 11:41:31 -04:00
user_exp_rcv.h RDMA/hfi1: Use mmu_interval_notifier_insert for user_exp_rcv 2019-11-23 19:56:44 -04:00
user_pages.c mm, tree-wide: rename put_user_page*() to unpin_user_page*() 2020-01-31 10:30:38 -08:00
user_sdma.c IB/hfi1: Close PSM sdma_progress sleep window 2019-06-11 17:06:45 -03:00
user_sdma.h IB/hfi1: Remove unused define 2019-07-22 16:10:48 -03:00
verbs_txreq.c IB/hfi1: Silence txreq allocation warnings 2019-06-17 21:15:40 -04:00
verbs_txreq.h IB/hfi1: Silence txreq allocation warnings 2019-06-17 21:15:40 -04:00
verbs.c IB/hfi1: Use a common pad buffer for 9B and 16B packets 2019-10-17 16:32:25 -04:00
verbs.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
vnic_main.c IB/hfi1: Add accessor API routines to access context members 2020-01-03 16:44:49 -04:00
vnic_sdma.c net: Use skb_frag_off accessors 2019-07-30 14:21:32 -07:00
vnic.h