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[ Upstream commite6daa8f61d] BUG: KASAN: stack-out-of-bounds in _mlx4_ib_post_send+0x1bd2/0x2770 [mlx4_ib] Read of size 4 at addr ffff8880d5a7f980 by task kworker/0:1H/565 CPU: 0 PID: 565 Comm: kworker/0:1H Tainted: G O 5.4.84-storage #5.4.84-1+feature+linux+5.4.y+dbg+20201216.1319+b6b887b~deb10 Hardware name: Supermicro H8QG6/H8QG6, BIOS 3.00 09/04/2012 Workqueue: ib-comp-wq ib_cq_poll_work [ib_core] Call Trace: dump_stack+0x96/0xe0 print_address_description.constprop.4+0x1f/0x300 ? irq_work_claim+0x2e/0x50 __kasan_report.cold.8+0x78/0x92 ? _mlx4_ib_post_send+0x1bd2/0x2770 [mlx4_ib] kasan_report+0x10/0x20 _mlx4_ib_post_send+0x1bd2/0x2770 [mlx4_ib] ? check_chain_key+0x1d7/0x2e0 ? _mlx4_ib_post_recv+0x630/0x630 [mlx4_ib] ? lockdep_hardirqs_on+0x1a8/0x290 ? stack_depot_save+0x218/0x56e ? do_profile_hits.isra.6.cold.13+0x1d/0x1d ? check_chain_key+0x1d7/0x2e0 ? save_stack+0x4d/0x80 ? save_stack+0x19/0x80 ? __kasan_slab_free+0x125/0x170 ? kfree+0xe7/0x3b0 rdma_write_sg+0x5b0/0x950 [rtrs_server] The problem is when we send imm_wr, the type should be ib_rdma_wr, so hw driver like mlx4 can do rdma_wr(wr), so fix it by use the ib_rdma_wr as type for imm_wr. Fixes:9cb8374804("RDMA/rtrs: server: main functionality") Link: https://lore.kernel.org/r/20210212134525.103456-2-jinpu.wang@cloud.ionos.com Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com> Reviewed-by: Gioh Kim <gi-oh.kim@cloud.ionos.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.