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b1151b74ff
The following allocation with large txqueuelen will result in the
following warning:
Call Trace:
__alloc_pages_nodemask+0x283/0x2c0
kmalloc_large_node+0x3c/0xa0
__kmalloc_node+0x22a/0x2f0
hfi1_ipoib_txreq_init+0x19f/0x330 [hfi1]
hfi1_ipoib_setup_rn+0xd3/0x1a0 [hfi1]
rdma_init_netdev+0x5a/0x80 [ib_core]
ipoib_intf_init+0x6c/0x350 [ib_ipoib]
ipoib_intf_alloc+0x5c/0xc0 [ib_ipoib]
ipoib_add_one+0xbe/0x300 [ib_ipoib]
add_client_context+0x12c/0x1a0 [ib_core]
ib_register_client+0x147/0x190 [ib_core]
ipoib_init_module+0xdd/0x132 [ib_ipoib]
do_one_initcall+0x46/0x1c3
do_init_module+0x5a/0x220
load_module+0x14c5/0x17f0
__do_sys_init_module+0x13b/0x180
do_syscall_64+0x5b/0x1a0
entry_SYSCALL_64_after_hwframe+0x65/0xca
For ipoib, the txqueuelen is modified with the module parameter
send_queue_size.
Fix by changing to use kv versions of the same allocator to handle the
large allocations. The allocation embeds a hdr struct that is dma mapped.
Change that struct to a pointer to a kzalloced struct.
Cc: stable@vger.kernel.org
Fixes: d99dc602e2 ("IB/hfi1: Add functions to transmit datagram ipoib packets")
Link: https://lore.kernel.org/r/1642287756-182313-3-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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
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In order to build the documentation, use ``make htmldocs`` or
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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.