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d382c7bc23
The VF's dynamic interrupt ctl "dyn_ctl_intrvl_s" is not initialized
in idpf_vf_intr_reg_init(). This resulted in the following UBSAN error
whenever a VF is created:
[ 564.345655] UBSAN: shift-out-of-bounds in drivers/net/ethernet/intel/idpf/idpf_txrx.c:3654:10
[ 564.345663] shift exponent 4294967295 is too large for 32-bit type 'int'
[ 564.345671] CPU: 33 UID: 0 PID: 2458 Comm: NetworkManager Not tainted 6.11.0-rc4+ #1
[ 564.345678] Hardware name: Intel Corporation M50CYP2SBSTD/M50CYP2SBSTD, BIOS SE5C6200.86B.0027.P10.2201070222 01/07/2022
[ 564.345683] Call Trace:
[ 564.345688] <TASK>
[ 564.345693] dump_stack_lvl+0x91/0xb0
[ 564.345708] __ubsan_handle_shift_out_of_bounds+0x16b/0x320
[ 564.345730] idpf_vport_intr_update_itr_ena_irq.cold+0x13/0x39 [idpf]
[ 564.345755] ? __pfx_idpf_vport_intr_update_itr_ena_irq+0x10/0x10 [idpf]
[ 564.345771] ? static_obj+0x95/0xd0
[ 564.345782] ? lockdep_init_map_type+0x1a5/0x800
[ 564.345794] idpf_vport_intr_ena+0x5ef/0x9f0 [idpf]
[ 564.345814] idpf_vport_open+0x2cc/0x1240 [idpf]
[ 564.345837] idpf_open+0x6d/0xc0 [idpf]
[ 564.345850] __dev_open+0x241/0x420
Fixes:
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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 reStructuredText 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.