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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/infiniband/core
История
Manjunath Patil baf8a6d2cd RDMA/cm: add timeout to cm_destroy_id wait 
[ Upstream commit 96d9cbe2f2ff7abde021bac75eafaceabe9a51fa ]

Add timeout to cm_destroy_id, so that userspace can trigger any data
collection that would help in analyzing the cause of delay in destroying
the cm_id.

New noinline function helps dtrace/ebpf programs to hook on to it.
Existing functionality isn't changed except triggering a probe-able new
function at every timeout interval.

We have seen cases where CM messages stuck with MAD layer (either due to
software bug or faulty HCA), leading to cm_id getting stuck in the
following call stack. This patch helps in resolving such issues faster.

kernel: ... INFO: task XXXX:56778 blocked for more than 120 seconds.
...
	Call Trace:
	__schedule+0x2bc/0x895
	schedule+0x36/0x7c
	schedule_timeout+0x1f6/0x31f
 	? __slab_free+0x19c/0x2ba
	wait_for_completion+0x12b/0x18a
	? wake_up_q+0x80/0x73
	cm_destroy_id+0x345/0x610 [ib_cm]
	ib_destroy_cm_id+0x10/0x20 [ib_cm]
	rdma_destroy_id+0xa8/0x300 [rdma_cm]
	ucma_destroy_id+0x13e/0x190 [rdma_ucm]
	ucma_write+0xe0/0x160 [rdma_ucm]
	__vfs_write+0x3a/0x16d
	vfs_write+0xb2/0x1a1
	? syscall_trace_enter+0x1ce/0x2b8
	SyS_write+0x5c/0xd3
	do_syscall_64+0x79/0x1b9
	entry_SYSCALL_64_after_hwframe+0x16d/0x0

Signed-off-by: Manjunath Patil <manjunath.b.patil@oracle.com>
Link: https://lore.kernel.org/r/20240309063323.458102-1-manjunath.b.patil@oracle.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-04-13 13:01:45 +02:00
..
Makefile RDMA/umem: Support importing dma-buf as user memory region 2021-01-20 16:07:52 -04:00
addr.c RDMA/addr: Be strict with gid size 2021-04-08 16:14:56 -03:00
agent.c
…
agent.h
…
cache.c IB/core: Shifting initialization of device->cache_lock 2021-07-16 10:57:28 -03:00
cgroup.c
…
cm.c RDMA/cm: add timeout to cm_destroy_id wait 2024-04-13 13:01:45 +02:00
cm_msgs.h RDMA/core: Add necessary spaces 2021-04-12 14:52:22 -03:00
cm_trace.c RDMA/cm: Replace pr_debug() call sites with tracepoints 2020-08-24 19:41:41 -03:00
cm_trace.h trace: Relocate event helper files 2024-04-10 16:19:24 +02:00
cma.c RDMA/cma: Initialize ib_sa_multicast structure to 0 when join 2023-10-10 21:59:09 +02:00
cma_configfs.c RDMA/cma: Fix truncation compilation warning in make_cma_ports 2023-10-10 21:59:09 +02:00
cma_priv.h RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests 2021-09-23 17:03:09 -03:00
cma_trace.c
…
cma_trace.h trace: Relocate event helper files 2024-04-10 16:19:24 +02:00
core_priv.h RDMA/core: Create clean QP creations interface for uverbs 2021-08-03 15:26:19 -03:00
counters.c RDMA: Split the alloc_hw_stats() ops to port and device variants 2021-06-16 20:58:29 -03:00
cq.c RDMA/core: Clean up cq pool mechanism 2020-12-10 15:05:17 -04:00
device.c RDMA/device: Fix a race between mad_client and cm_client init 2024-03-26 18:21:33 -04:00
ib_core_uverbs.c
…
iwcm.c RDMA/iwcm: Release resources if iw_cm module initialization fails 2021-07-30 10:01:40 -03:00
iwcm.h RDMA/core: Use refcount_t instead of atomic_t on refcount of iwcm_id_private 2021-06-08 14:35:44 -03:00
iwpm_msg.c RDMA/iwpm: Rely on the rdma_nl_[un]register() to ensure that requests are valid 2021-07-30 10:01:41 -03:00
iwpm_util.c RDMA/iwpm: Rely on the rdma_nl_[un]register() to ensure that requests are valid 2021-07-30 10:01:41 -03:00
iwpm_util.h RDMA/iwpm: Rely on the rdma_nl_[un]register() to ensure that requests are valid 2021-07-30 10:01:41 -03:00
lag.c
…
mad.c IB/mad: Don't call to function that might sleep while in atomic context 2022-12-31 13:14:23 +01:00
mad_priv.h RDMA/core: Remove refcount from struct ib_mad_snoop_private 2021-06-08 14:43:28 -03:00
mad_rmpp.c RDMA/core: Remove redundant spaces 2021-04-12 14:56:48 -03:00
mad_rmpp.h
…
mr_pool.c
…
multicast.c RDMA/core: Use refcount_t instead of atomic_t on refcount of mcast_port 2021-06-08 14:45:07 -03:00
netlink.c RDMA/core: Fix incorrect print format specifier 2021-06-21 15:38:30 -03:00
nldev.c RDMA/core: Require admin capabilities to set system parameters 2023-10-10 21:59:08 +02:00
opa_smi.h RDMA: Support more than 255 rdma ports 2021-03-26 09:31:21 -03:00
packer.c
…
rdma_core.c RDMA/core: Correct misspellings of two words in comments 2021-03-26 11:58:26 -03:00
rdma_core.h
…
restrack.c RDMA/restrack: Release MR restrack when delete 2022-12-31 13:14:23 +01:00
restrack.h RDMA/restrack: Improve readability in task name management 2020-09-22 19:47:35 -03:00
roce_gid_mgmt.c RDMA: Fix kernel-doc warnings about wrong comment 2021-06-21 20:32:50 -03:00
rw.c RDMA/core: Fix incorrect print format specifier 2021-06-21 15:38:30 -03:00
sa.h RDMA: Support more than 255 rdma ports 2021-03-26 09:31:21 -03:00
sa_query.c RDMA/core: Use size_{add,sub,mul}() in calls to struct_size() 2023-11-20 11:08:22 +01:00
security.c IB/core: Removed port validity check from ib_get_cached_subnet_prefix 2021-06-21 20:49:32 -03:00
smi.c RDMA: Support more than 255 rdma ports 2021-03-26 09:31:21 -03:00
smi.h RDMA: Support more than 255 rdma ports 2021-03-26 09:31:21 -03:00
sysfs.c RDMA/core: Use size_{add,sub,mul}() in calls to struct_size() 2023-11-20 11:08:22 +01:00
trace.c
…
ucma.c RDMA/ucma: Protect mc during concurrent multicast leaves 2022-02-08 18:34:06 +01:00
ud_header.c RDMA/core: Fix incorrect print format specifier 2021-06-21 15:38:30 -03:00
umem.c RDMA/core: Fix umem iterator when PAGE_SIZE is greater then HCA pgsz 2023-12-13 18:36:40 +01:00
umem_dmabuf.c RDMA: Use the sg_table directly and remove the opencoded version from umem 2021-08-24 19:52:40 -03:00
umem_odp.c IB/core: Fix a nested dead lock as part of ODP flow 2022-09-15 11:30:06 +02:00
user_mad.c RDMA/core: Use size_{add,sub,mul}() in calls to struct_size() 2023-11-20 11:08:22 +01:00
uverbs.h RDMA/core: Use refcount_t instead of atomic_t on refcount of ib_uverbs_device 2021-06-08 15:04:36 -03:00
uverbs_cmd.c RDMA/uverbs: Restrict usage of privileged QKEYs 2023-06-21 15:59:15 +02:00
uverbs_ioctl.c IB/core: Split uverbs_get_const/default to consider target type 2021-03-11 20:20:36 -04:00
uverbs_main.c RDMA/uverbs: Fix typo of sizeof argument 2023-10-10 21:59:09 +02:00
uverbs_marshall.c RDMA/core: Don't infoleak GRH fields 2022-01-11 15:35:12 +01:00
uverbs_std_types.c RDMA/core: Make FD destroy callback void 2020-11-12 12:32:17 -04:00
uverbs_std_types_async_fd.c RDMA/core: Make FD destroy callback void 2020-11-12 12:32:17 -04:00
uverbs_std_types_counters.c IB/uverbs: Fix an potential error pointer dereference 2023-09-19 12:22:46 +02:00
uverbs_std_types_cq.c RDMA/core: Postpone uobject cleanup on failure till FD close 2020-11-12 12:32:17 -04:00
uverbs_std_types_device.c RDMA/uverbs: Fix a NULL vs IS_ERR() bug 2021-05-19 15:32:07 -03:00
uverbs_std_types_dm.c RDMA/core: Postpone uobject cleanup on failure till FD close 2020-11-12 12:32:17 -04:00
uverbs_std_types_flow_action.c RDMA/core: Postpone uobject cleanup on failure till FD close 2020-11-12 12:32:17 -04:00
uverbs_std_types_mr.c RDMA/uverbs: Track dmabuf memory regions 2021-08-19 09:59:53 -03:00
uverbs_std_types_qp.c Revert "RDMA/core: Fix ib_qp_usecnt_dec() called when error" 2022-04-08 14:23:39 +02:00
uverbs_std_types_srq.c RDMA/core: Postpone uobject cleanup on failure till FD close 2020-11-12 12:32:17 -04:00
uverbs_std_types_wq.c RDMA/core: Postpone uobject cleanup on failure till FD close 2020-11-12 12:32:17 -04:00
uverbs_uapi.c RDMA/uverbs: Check for null return of kmalloc_array 2022-01-11 15:35:13 +01:00
verbs.c RDMA/core: Fix GID entry ref leak when create_ah fails 2023-04-20 12:13:53 +02:00