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bd240b1182
[ Upstream commit 2383a767c0 ]
Vega10 has multiple interrupt rings, so this can be called from multiple
calles at the same time resulting in:
[ 71.779334] ================================
[ 71.779406] WARNING: inconsistent lock state
[ 71.779478] 4.19.0-rc1+ #44 Tainted: G W
[ 71.779565] --------------------------------
[ 71.779637] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
[ 71.779740] kworker/6:1/120 [HC0[0]:SC0[0]:HE1:SE1] takes:
[ 71.779832] 00000000ad761971 (&(&kfd->interrupt_lock)->rlock){?...},
at: kgd2kfd_interrupt+0x75/0x100 [amdgpu]
[ 71.780058] {IN-HARDIRQ-W} state was registered at:
[ 71.780115] _raw_spin_lock+0x2c/0x40
[ 71.780180] kgd2kfd_interrupt+0x75/0x100 [amdgpu]
[ 71.780248] amdgpu_irq_callback+0x6c/0x150 [amdgpu]
[ 71.780315] amdgpu_ih_process+0x88/0x100 [amdgpu]
[ 71.780380] amdgpu_irq_handler+0x20/0x40 [amdgpu]
[ 71.780409] __handle_irq_event_percpu+0x49/0x2a0
[ 71.780436] handle_irq_event_percpu+0x30/0x70
[ 71.780461] handle_irq_event+0x37/0x60
[ 71.780484] handle_edge_irq+0x83/0x1b0
[ 71.780506] handle_irq+0x1f/0x30
[ 71.780526] do_IRQ+0x53/0x110
[ 71.780544] ret_from_intr+0x0/0x22
[ 71.780566] cpuidle_enter_state+0xaa/0x330
[ 71.780591] do_idle+0x203/0x280
[ 71.780610] cpu_startup_entry+0x6f/0x80
[ 71.780634] start_secondary+0x1b0/0x200
[ 71.780657] secondary_startup_64+0xa4/0xb0
Fix this by always using irq save spin locks.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.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
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.