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linux/drivers/infiniband/hw
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Patrisious Haddad 5fe7815e78 RDMA/mlx5: Return the firmware result upon destroying QP/RQ 
[ Upstream commit 22664c06e9 ]

Previously when destroying a QP/RQ, the result of the firmware
destruction function was ignored and upper layers weren't informed
about the failure.
Which in turn could lead to various problems since when upper layer
isn't aware of the failure it continues its operation thinking that the
related QP/RQ was successfully destroyed while it actually wasn't,
which could lead to the below kernel WARN.

Currently, we return the correct firmware destruction status to upper
layers which in case of the RQ would be mlx5_ib_destroy_wq() which
was already capable of handling RQ destruction failure or in case of
a QP to destroy_qp_common(), which now would actually warn upon qp
destruction failure.

WARNING: CPU: 3 PID: 995 at drivers/infiniband/core/rdma_core.c:940 uverbs_destroy_ufile_hw+0xcb/0xe0 [ib_uverbs]
Modules linked in: xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi rdma_cm ib_umad ib_ipoib iw_cm ib_cm mlx5_ib ib_uverbs ib_core overlay mlx5_core fuse
CPU: 3 PID: 995 Comm: python3 Not tainted 5.16.0-rc5+ #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
RIP: 0010:uverbs_destroy_ufile_hw+0xcb/0xe0 [ib_uverbs]
Code: 41 5c 41 5d 41 5e e9 44 34 f0 e0 48 89 df e8 4c 77 ff ff 49 8b 86 10 01 00 00 48 85 c0 74 a1 4c 89 e7 ff d0 eb 9a 0f 0b eb c1 <0f> 0b be 04 00 00 00 48 89 df e8 b6 f6 ff ff e9 75 ff ff ff 90 0f
RSP: 0018:ffff8881533e3e78 EFLAGS: 00010287
RAX: ffff88811b2cf3e0 RBX: ffff888106209700 RCX: 0000000000000000
RDX: ffff888106209780 RSI: ffff8881533e3d30 RDI: ffff888109b101a0
RBP: 0000000000000001 R08: ffff888127cb381c R09: 0de9890000000009
R10: ffff888127cb3800 R11: 0000000000000000 R12: ffff888106209780
R13: ffff888106209750 R14: ffff888100f20660 R15: 0000000000000000
FS:  00007f8be353b740(0000) GS:ffff88852c980000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8bd5b117c0 CR3: 000000012cd8a004 CR4: 0000000000370ea0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ib_uverbs_close+0x1a/0x90 [ib_uverbs]
 __fput+0x82/0x230
 task_work_run+0x59/0x90
 exit_to_user_mode_prepare+0x138/0x140
 syscall_exit_to_user_mode+0x1d/0x50
 ? __x64_sys_close+0xe/0x40
 do_syscall_64+0x4a/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8be3ae0abb
Code: 03 00 00 00 0f 05 48 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 83 43 f9 ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 c1 43 f9 ff 8b 44
RSP: 002b:00007ffdb51909c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000557bb7f7c020 RCX: 00007f8be3ae0abb
RDX: 0000557bb7c74010 RSI: 0000557bb7f14ca0 RDI: 0000000000000005
RBP: 0000557bb7fbd598 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000557bb7fbd5b8
R13: 0000557bb7fbd5a8 R14: 0000000000001000 R15: 0000557bb7f7c020
 </TASK>

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Link: https://lore.kernel.org/r/c6df677f931d18090bafbe7f7dbb9524047b7d9b.1685953497.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2023-08-23 17:52:21 +02:00
..
bnxt_re RDMA/bnxt_re: Prevent handling any completions after qp destroy 2023-08-03 10:24:04 +02:00
cxgb4 iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry() 2023-03-10 09:33:39 +01:00
efa RDMA/efa: Fix unsupported page sizes in device 2023-06-09 10:33:58 +02:00
erdma RDMA/erdma: Use fixed hardware page size 2023-05-11 23:03:33 +09:00
hfi1 IB/hfi1: Fix possible panic during hotplug remove 2023-08-16 18:27:27 +02:00
hns RDMA/hns: Fix hns_roce_table_get return value 2023-07-19 16:21:25 +02:00
irdma RDMA/irdma: Report correct WC error 2023-08-03 10:24:06 +02:00
mlx4 RDMA/mlx4: Make check for invalid flags stricter 2023-08-03 10:24:02 +02:00
mlx5 RDMA/mlx5: Return the firmware result upon destroying QP/RQ 2023-08-23 17:52:21 +02:00
mthca RDMA/mthca: Fix crash when polling CQ for shared QPs 2023-08-03 10:24:03 +02:00
ocrdma IB: move from strlcpy with unused retval to strscpy 2022-08-21 14:18:02 +03:00
qedr RDMA/qedr: clean up work queue on failure in qedr_alloc_resources() 2022-10-28 12:59:40 -03:00
qib RDMA/qib: fix repeated words in comments 2022-09-20 14:11:14 +03:00
usnic RDMA/usnic: use iommu_map_atomic() under spin_lock() 2023-02-14 19:11:43 +01:00
vmw_pvrdma RDMA/pvrdma: Remove useless DMA-32 fallback configuration 2022-01-28 10:49:04 -04:00
Makefile RDMA/erdma: Add driver to kernel build environment 2022-07-27 16:04:05 -03:00